Hafler Home Security System TRM10S User Manual

TRM10s  
®
TRM12s  
Installation & Operation  
DESIGNED AND  
ASSEMBLED IN THE  
USA  
TEM  
SUBWOOFER MONITORING SYS  
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PE R F O R M A N C E SP E C I F I C A T I O N S  
SUBWOOFER MODEL  
TRM10S  
TRM12S  
Free Field Frequency Response  
Peak Acoustic Output  
27Hz-110Hz, ±2dB  
112dB (w/music @ 2m)  
25Hz-110Hz, ±2dB  
115dB (w/music @ 2m)  
Total Harmonic Distortion (THD) <3%, 30Hz-90Hz (90dB @ 2m)  
<3%, 25Hz-90Hz (90dB @ 2m)  
12" (305mm) Cellulose Fibre Cone  
Santoprene Rubber Surround  
2.5" (63.5mm) 4-Layer Voice Coil  
102 oz. Magnet  
Low Frequency Driver  
10" (254mm) Cellulose Fibre Cone  
Santoprene Rubber Surround  
2" (51mm) 4-Layer Voice Coil  
30 oz. Magnet  
Cabinet  
Dimensions  
1.0ft3 (28 Liter) Vented Down Firing  
14.75"(H) x 16"(W) x 16"(D)  
(37.46cm x 40.64cm x 40.64cm)  
53 lbs. (24kg)  
2.0ft3 (56 Liter) Vented Down Firing  
18.25"(H) x 19.50"(W) x 19.375"(D)  
(46.35cm x 49.53cm x 49.21cm)  
94 lbs. (42kg)  
Net Weight  
Frequency Response @ 2m*  
Frequency Response @ 2m*  
*Frequency response generated with 60Hz low pass crossover engaged  
AMPLIFIER SECTION  
Power Rating  
Signal-to-Noise  
CMRR  
200 W RMS @ 4 ohms  
>100dB  
>70dB typical @ 60Hz  
TRM10s Dimensions  
Input Impedance  
Input Sensitivity Range  
47kper phase balanced, 47kunbalanced  
160mV to 5V (unbalanced)  
H = 14.75"  
80mV to 2.5V (per phase balanced)  
+45dB max. to +15dB min.  
Gain  
Power Consumption  
Idle Power: 11W / 150mA @ 120 VAC  
Idle Power: 11W / 90mA @ 230 VAC  
Normal Operation: 68W / 770mA @ 120 VAC  
Normal Operation: 66W / 380mA @ 230VAC  
Full Power: 330W / 3.3A @ 120VAC  
Full Power: 315W / 1.7mA @ 230VAC  
Balanced XLR Inputs  
D = 16"  
W
16"  
TRM12s Dimensions  
Rear Panel  
Unbalanced RCA Inputs  
Gain Control (30dB range)  
Low Pass Crossover (variable 40Hz~140Hz)  
Phase DIP Switches (0°, -90°, -180°, -270°)  
H = 18.25"  
LOW-PASS CROSSOVER SECTION  
D = 19.375"  
W
19.50"  
Crossover Frequency  
Crossover Slope  
Subsonic Filter  
Variable from 40Hz~140Hz  
24dB/octave (4th order) Linkwitz-Riley  
12dB/octave (-3dB @ 18Hz)  
Specifications are subject to change without notice.  
– vi –  
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NOTICE - IMPORTANT SAFETY INFORMATION  
The lightning flash with arrowhead symbol within an equilateral triangle  
is intended to alert the user to the presence of uninsulated "dangerous  
voltage" within the product's enclosure, that may be of sufficient magni-  
tude to constitute a risk of electric shock to persons.  
C A U T I O N  
RISK OF ELECTRIC SHOCK  
DO NOT OPEN  
!
The exclamation point within an equilateral triangle is intended to alert  
the user of the presence of important operating and maintenance  
(servicing) instructions in the literature accompanying the appliance.  
WARNING: TO PREVENT FIRE OR SHOCK HAZARD  
DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.  
1. READ INSTRUCTIONS  
connection. It is important that the blades of the equipments plug  
be able to fully insert into the mating receptacle. Never remove the  
round grounding pin on the plug in an attempt to mate to a two  
wire ungrounded receptacle: use a grounding adaptor with the  
grounding tab or wire suitably connected to earth ground.  
All the safety and operating instructions of your Hafler equipment  
should be read before power is applied to the equipment.  
2. RETAIN OWNER'S MANUAL  
These safety and operating instructions should be retained for  
future reference.  
11. NON-USE PERIODS  
During periods of extended non-use, the power cord should be  
unplugged from the power source.  
3. HEED WARNINGS  
Allwarningsontheequipmentandintheoperatinginstructionsare  
important and should be followed.  
12. CLEANING  
The equipment should be cleaned only as detailed in the operating  
instructions.  
4. FOLLOW INSTRUCTIONS  
All operating and use instructions are important and should be  
followed.  
13. OBJECT AND LIQUID ENTRY  
Careshouldbetakensothatobjectsand/orliquids,suchascleaning  
fluids or beverages, are not spilled into the enclosure of the  
equipment.  
5. HEAT  
The equipment should be kept away from areas of high tempera-  
ture, i.e., heater vents, radiators, stoves/ovens, fireplaces, etc.  
14. DAMAGE REQUIRING SERVICE  
6. VENTILATION  
Haflerequipmentshouldbeservicedbyqualifiedservicepersonnel  
when:  
The equipment should be used in an area suitable for proper  
ventilation. Care should be taken not to impede airflow in and  
around the cabinet.  
A. The power supply cord or plug has been damaged, or  
7. WATER AND MOISTURE  
B. Objects have fallen onto, or liquid has been spilled into the  
equipment, or  
The equipment should not be used in or around water, such as a  
bathtub, sink, or swimming area. Also, the equipment should not  
be used in areas prone to flooding, such as a basement.  
C. The equipment has been exposed to rain, or  
8. POWER SOURCES  
The equipment should be connected only to a power source of the  
same voltage and frequency as that listed on the rear panel above  
the power cord entry point.  
D. The equipment does not appear to operate normally or  
exhibits a marked change in performance, or  
E. The equipment has been dropped, or the enclosure has  
been damaged.  
9. POWER CORD PROTECTION  
Power cords should be arranged so they do not interfere with the  
movement of objects in the room: people, fan blades, utility carts,  
etc. Also, care should be taken that the cord is not pinched or cut,  
and placed so it is not in danger of being pinched or cut, as in under  
a rug, around a tight corner, etc.  
15. SERVICING  
The user should not attempt to service the equipment beyond that  
which is described in the operating instructions. All other service  
should be referred to qualified service personnel.  
10. POWER CORD GROUNDING  
16. CARTS AND STANDS  
The power supply cord is of a three wire grounded type, designed  
to reduce the risk of electric shock sustained from a live cabinet. It  
is assumed to be of suitable length for most uses of the equipment.  
The use of extension cords and power strips is discouraged unless  
they are of suitable rating to deliver the required total current for  
safeoperationofallconnectedequipment. Furthermore,extension  
cords or power strips must provide the same three wire grounded  
The equipment should be used with carts or stands only of sufficient  
strength and stability for the use intended.  
An equipment and cart combination should be moved with care.  
Quick stops and starts, excessive force, and uneven surfaces may  
cause the equipment and cart combination to topple.  
v –  
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ADVERTENCIA – INFORMACION DE SEGURIDAD IMPORTANTE  
El símbolo de flecha relámpago dentro de un triángulo equilátero, es para  
alertar al usario de la presencia de voltajes peligrososno aislados en el  
interior del aparato, los cuales pueden ser de suficiente magnitud para  
constituir un riesgo de choque eléctrico a las personas.  
P E L I G R O  
RIESGO DE DESCARGA  
ELÉCTRICA NO ABRÍR.  
!
El símbolo de exclamación dentro de un triángulo equilátero, es para alertar  
al usuario de la presencia de instrucciones importantes de operación y  
mantenimiento (servicio) en la documentación que acompaña al equipo.  
PRECAUCÍON:  
Para Prevenir el incendio o la descarga electrica, no  
exponer este equipo a la lluvia o a la humedad.  
1. LEA LAS INSTRUCCIONES  
poder suministrar la corrioente requerida pra la operación segura  
de todo el equipo conectado. Aun más, las extensiones deben  
proveerdelamismaconecciónaterradadetreshiles. Esimportante  
queelenchufesepuedaintroducircompletamenteenelreceptáculo.  
Nunca remeva el pin de aterramiento en un intento por conectar el  
cable en un receptáculo de dos hilos no aterrado: use un adaptador  
de aterramiento que esté adecuadamente conectado a un punto de  
tierra.  
Todas las instrucciones de seguidad y operación de su equipo  
Hafler, deben ser leídas antes de que el equipo sea conectado  
dléctricamente.  
2. CONSERVE EL MANUAL DEL PROPIETARIO  
Estasinstruccionesdeseguridadyoperación,debenserconservadas  
para futuras referencias.  
3. CUADROS DE ADVERTENCIAS  
11. PERIODOS SIN USO  
Todas las advertencias en el equipo y en las instrucciones de  
operación, son importantes y deben ser seguidas.  
Durante períodos prolongados sin uso del equipo, el cable de  
corriente debe ser desconectado de la fuente de electrixidad.  
4. SIGA LAS INSTRUCCIONES  
12. LIMPIEZA  
Todas las instrucciones de uso y operación son importantes y deben  
ser seguidas.  
El equip debe ser limpiado solo en la forma que se detalla en las  
instrucciones de operación.  
5. CALOR  
13. INTRODUCCIÓN DE OBJETOS Y LIQUIDO  
El equipo debe ser mantenido lejos de areas de alta temperatura,  
como por ejemplo: ventilaciones de calentadores, radiadores,  
estufas/hornos, hogueras, etc.  
Deben ser tornadas precauciones con el fin de que objetos y/ó  
líquidos, tales como fluidos de limpieza y gaseosas, no sean  
derramados dentro del chassis del aparato.  
6. VENTILACION  
14. DAÑOS QUE REQUIEREN DE SERVICIO  
Los equipos Hafler deben ser llevados a servicio por personal  
calificado cuando:  
El equip debe ser usado en áreas con ventilación adecuada. Deben  
er tornadas las precauciones necesarias para no impedir el flujo de  
aire dentro y alrededor del aparato.  
A. El cable de corriente ó el enchufe haya sido dañado, ó  
7. AGUA Y HUMEDAD  
El equipo no debe ser usado en el agua ó alrededor de ésta, tales  
como en una bañera, tanque o áreas de nado. También, el equipo  
no debe ser usado en áreas propensas a inundaciones, tales como  
en un sótano.  
B. Objetos ó líquido hayan sido introducidos ó derramado en  
el equipo, ó  
C. El equipo haya sido expuesto a lluvia, ó  
8. FUENTES DE PODER  
El equipo debe ser conectado a una fuente de poder del mismo  
voltaje y frecuencia que el indicado en el panel trasero sobre el  
punto de entrada del cable de corriente.  
D. El equipo aparenta no operar normalmente ó exhibe un  
marcado cambio en su desempeño, ó  
E. El equipo se ha caído, o el chassis ha sido golpeado.  
9. PROTECCION DEL CABLE DE CORRIENTE  
Los cables de corriente deben ser dispuestos de forma tal que no  
interfieran con el movimiento de objetos en la sala: personas, aspas  
de ventilación, carretillas, etc. También, es necesario tener cuidado  
de que el cable no esté punzado o cortado, y debe estar ubicado de  
forma tal que esto no ocurra, como podría suceder debajo de una  
alfombra o al pasar el cable por una esquina aguda, etc.  
15. SERVICIO  
El usuario no deberá intentar darle servicio al equipo más allá de lo  
que está descrito en el instructivo de operación. Todo lo demás,  
deberá ser referido a servicio por personal calificado.  
16. CARRETILLAS Y SOPORTES  
El equipo podrá ser usado con carretillas y soportes que tengan la  
fortaleza y estabilidad suficiente para el uso previsto.  
10. ATERRAMIENTO DEL CABLE DE CORRIENTE  
El cable de corriente es del tipo aterrado de tres hilos, diseñado para  
reducir el riesgo de una descarga eléctrica procendent de un chasis  
energizado. Se asume que su longitud es suficiente para la mayoría  
de usos del equipo. El uso de extensiones y multienchufes no es  
recomendado, a menos que tengan el amperaje adecuado para  
La combinación equipo/carretilla deberá ser movida con cuidado.  
Rápidasparadasyarranques,excesivafuerzaysuperficiesimparejas,  
pueden causar el volcamiento del conjunto de carretilla/equipo.  
iv –  
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ATTENTION: INFORMATIONS IMPORTANTES DE SÉCURITÉ  
La lumière clignotante du symbole de la flêche à l'intérieur d'un triangle  
équilatéral, à pour objet d'alerter l'utilisateur de la présence d'un voltage  
dangereuxnon-isolé à l'intérieur du produit, qui pourrait être de magnitude  
suffisante au risque d'éléctrocution.  
A T T E N T I O N  
RISQUE DE CHOC  
ÉLECTRIQUE NE PAS OUVRIR  
!
AVERTISSEMENT:  
Le point d'exclamation, à l'intériur d'un triangle équilatéral, à pour objet de  
prévenir l'utilisateur de l'importance des instructions de fonctionement et de  
exposer cet appareil à la pluie ou à l'humidité.  
maintenance, jointes à l'appareil.  
Afin de prévenir les risques de feu ou de choc, ne pas  
11. PÉRIODES DE NON-UTILISATON  
1. LIRE LES INSTRUCTIONS  
Durant les périodes de non-utilisation, la prise de courant ne  
devrait pas être branchée à une source d'energie.  
Lemoded'emploietlesmesuresdesécuritédevotreéquipement  
Hafler devraient être consultés avant sa mise en marche.  
12. NETTOYAGE  
2. CONSERVER LE GUIDE DE L'UTILISATEUR  
Le mode e'emploi et les mesures de sécurité devraient être  
conservés pour des références futures.  
Le matériel devrait être nettoyé en respectant les instructions  
indiquées.  
13. PENETRATION DES LIQUIDES  
3. CONSIDÉRATIONS DE MISE EN GARDE  
Un attention particulière est éxigée quant à la dispersion de  
liquides tels que les produits de nettoyage et boissons, de façcon  
à éviter toute pénetration dans l'enceinte du matériel.  
Lemoded'emploietlesmisesengardeconcernantcetéquipement  
sont de grande importance et devraient être suivis.  
4. SUIVRE LE MODE E'EMPLOI  
14. DÉGÂT NÉCESSITANT UNE RÉVISION  
Le matériel Hafler devrait être révisé par des personnes qualifées  
de service après-vente, lorsque:  
Le mode d'emploi et les conseils d'utilisation sont importants et  
devraient être suivis.  
5. CHALEUR  
Le matériel devrait être préservé loin de toute source de chaleur:  
radiateurs, cuisinière/fours, cheminées,etc.  
A. Les fiches ou la prise de courant ont été endommagé, ou:  
B. Deobjetssonttombéssurlematériel, oudesliquidess'ysont  
dispersés, ou:  
6. VENTILATION  
Le matériel devrait être utilisé dans un endroit à bonne ventila-  
tion. Il reste nécessaire de respecter la circulation de flux d'air à  
l'intérier et autour du meuble.  
C. Le matériel a été exposé à la pluie, ou:  
7. EAU ET HUMIDITÉ  
D. Le matériel ne semble pas fonctioner correctement, ou  
Le matériel ne devrait pas être utilisé près d'une source d'eau,  
telle qu'une baignoire, un évier, ou une aire de baignade. De  
plus, le matériel ne devrait pas être utilisé dans des lieux sujets  
aux innondations, tels que les sous-sols.  
affiche un changement de performance, ou:  
E. Le matériel a été renversé à terre, ou l'enceinte a été  
endommagée.  
8. SOURCES D'ÉNERGIE  
15. REVISION  
Le matériel devrait seulement être relié à une source d'énergie de  
même voltage et fréquence que celle indiquée sur le tableau  
arrière, au dessus de la fiche d'entrée de la prise de courant.  
L'utilisateur ne devrait pas essayer de réviser le matériel en allant  
plus loin que ce qui a été décrit dans le mode d'emploi. Toute  
autre réviion devrait être confiée à un personnel qualifié.  
9. PROTECTION DE LA PRISE DE COURANT  
16. CHARRIOTS ET MEUBLES  
La prise de courant devrait être arrangée de façon à ne pas  
interférer avec le déplacement d'objets (chariots, pales de  
ventillateursetc.) ou de personnes à l'intérieur de la pièce.  
D'autre part, il faudrait faire tres attention à ce que la prise ne soit  
pas percée ou coupée, ou disposée de façon à risquer de l'être,  
comme sous un tapis, autour d'un angle pointuetc.  
Le matériel devriat être utilisé avec des charriots et meubles de  
qualité et stabilité suffisante à son utilisation préconçue.  
L'ensemble du matériel et du charriot devrait être déplacé avec  
précaution. Des mises en marche et arrêts brusques, des colli-  
sionsexcessivesainsiquedessurfacesinégalespeuventrenverser  
l'ensemble du matériel et du charriot.  
10. PRISE DE COURANT ÀTROIS FICHES  
La prise de courant est composée de trois fiches, désignées à  
réduire le risque de décharge électrique de l'appareil.  
Elle devrait être de longueur suffisante pour la plupart des  
utilisations de ce matériel. L'utilisation de rallonge t d'adaptateur  
est déconsellée à moins dêtre en mesure de fournir la charge  
électrique requise à un fonctionement sans risque, de tout  
matériel relié.  
iii –  
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ACHTUNG – WICHTIGE SICHERHEITS – INFORMATIONEN  
Der Blitz mit dem Pfeil, in einem gleihschenkligen Dreieck, soll den benutzer  
vor unisolierter gefährlicher Spannunginnerhalb des Gerätes warnen.  
A C H T U N G  
GEFAHR EINES  
ELEKTRISCHEN SCHLAGS  
!
Das Ausrufezeichen, in einem gleichschenkligen Dreieck, soll den Benutzer  
darauf aufmerksam machen, daβ dem Gerät wichtige Operations - und Service  
- Informationen beigefügt sind.  
NICHT ÖFFNEN  
WARNUNG:  
Um die gefahr eines elektroschocks oder feuer zu  
vermeiden, setzen sie das gerät keinem regen oder  
extremer feuchtigkeitaus.  
1. INSTRUKTIONEN LESEN  
11. ZEITRÄUME IN DENE DAS GERÄT NICHT GENUTZT WIRD  
Wird das Gerät über einen längeren Zeitraum nicht genutzt (z.B.  
Urlaub), ziehen Sie bitten den Netzstecker aus der Steckdose.  
Alle Sicherheits- und Operationshinweise Ihres Hafler Equipments  
sollten vor der Inbetriebnahme gelesen werden.  
2. BETRIEBSANLEITUNG AUFBEWAHREN  
12. REINIGEN  
Bewahren Sie die Bedienungsanleitung sorgfältig auf, damit Sie in  
dieser auch in Zukunft nachschlagen können.  
ReinigenSiedasGerätnur,wieinderBedienungsanleitungdetailliert  
beschrieben.  
3. WARNUNGEN BEACHTEN  
13. EINDRINGEN VON FREMDKÖRPERN  
Achten Sie darauf, daβ weder Fremdkörper, noch Flüssigkeiten in  
das Gerät eindringen.  
Alle Warnungen des Gerätes und der Bedienungsanleitung sind  
extrem wichtig und müssen befolgt werden.  
4. INSTRUKTIONEN BEACHTEN  
14. ERFORDERLICHER REPARATURSERVICE  
Hafler Equipment sollte nur von qualifizierten Service-Technikern  
instand gesetzt werden, wenn:  
Alle Operations- und Gebrauchshinweise sind extrem wichtig und  
müssen beachtet werden.  
5. HITZE  
A. Das Stromversorgungskabel beschädigt wurde  
B. Eine Flüssigkeit in das Gerät eingedrimgem ist  
C. Das Gerät Regen ausgesetzt wurde  
Das Equipment sollte fern von Hitze ausstrahlenden Geräten  
aufgestellt werden, wie z.B. Heizungen, Öfen etc.  
6. VENTILATION  
Das Equipment sollte so aufgestellt werden, daβ eine ausreichende  
Ventialition gewährt wird.  
D. Das Gerät nicht mehr ordnungsgemäβ funktioniert, ggf. nicht  
7. WASSER UND FEUCHTIGKEIT  
mehr die volle Leistung abgibt  
Das Equipment sollte nicht im oder in der Nähe von Wasser benutzt  
werden, wie z.B. in Schwimmbädem, Saunen etc. Es sollte ebenfalls  
nichtinÜberschwämmungsgefährdetenGebietenaufgestelltwerden,  
wie z.B. Kellerräumen.  
E. Das Gerät runtergefallen ist oder das Gehäuse beschädigt  
wurde  
15. SERVICE  
8. STROMANSCHLUβ  
Der Benutzer sollte nur den Service ausführen, der in der  
Bedienungsanleitung für den Benutzer freigegeben wird. Den  
weiterführenden Service sollte nur von qualifizierten Tevhnikern  
durchgeführt werden.  
Das Equipment darf nur an eine Stromversorgung angeschlossen  
werden, die die gleichen Parameter aufweist, welche auf der  
Rückseite, über em Anschluβterminal des Gerätes, aufgelistet sind.  
9. SCHUTZ DER ZULEITUNG  
16. AUFSTELLUNG  
Die Zuletungen sollten so verlegt werden, daβ diese nicht in den  
BewegungsbereichandererMöbelstückeoderPersonenhereinragen.  
Achten Sie darauf, das das Kabel nicht gequestscht oder  
durchschnittren wird, wie z.B. unter Schränken oder an scharfen  
Kanten etc.  
Das Equipment sollte so aufgestellt werden, daβ der gewählte  
Untergrund die erforderliche Stabilität aufweist, so daβ eine  
gefahrlose Bnutzong gewährleistet wird.  
Das Equipment und der Untergrund sollte mit äuberster Vorsicht  
bewegt werden. Bei schnellen Bewegungen oder starkem  
Abbremsen, kann es zum Umkippen des Equipments kommen.  
10. MASSEANSCHLUβ  
DasdreiadrigeAnschlubkabelistmiteinemErdungsleiterausgestattet,  
welcher die Risiken eines Elektroschocks verringert. Das Kabel hat  
eine Länge, welche für die meisten Anwendungen völlig ausreicht.  
WennSieVerlängerungskabelbenutzen, achtenSiedarauf, dasdies  
die erforderlichen Ströme bertragen können. Benutzen Sie immer  
dreiadrige Verlängerungskable.  
ii –  
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NOTARE – IMPORTANTI INFORMAZIONI SULLA SICUREZZA  
Il simbolo del fulmine in un triangolo equilatero vuole avvertire della presenza  
di tensioni elevate non isolate e di valore sufficiente per costituire rischio di  
shock elettrico alle persone.  
AT T E N Z I O N E  
RISCHIO DI SCARICHE  
ELETTRICHE NON APRIRE  
!
Il punto esclamativo contentuto in un triangolo equilatero vuole avvertire  
l'utente della presenza di parti di servizio e di manutenzione che sono  
dettagliate nel manuale di istruzioni.  
ATTENZIONE:  
Per prevenire incendio scariche elettriche, non esporre  
questo apparato a pioggia o umiditá.  
11. PERIODI DI NON UTILIZZO  
1. LEGGETE LE ISTRUZIONI  
Durante lunghi periodi di non utilizzo, staccare il cavo di  
alimentazione.  
Tutte le istruzioni riguardanti la sicurezza ed il funzionamento  
devono essere lette prima di applicare tensione all'apparato.  
12. PULIZIA  
2. CONSERVATE IL MANUALE  
L'apparato deve essere pulito solo come indicato dalle istruzioni.  
Queste istruzioni riguardanti la sicurezza ed il funzionamento  
devono essere conservate come riferimento futuro.  
13. INGRESSO DI OGGETTI E LIQUIDI  
Sideveprestarattenzionecheoggettieliquidi,comefluididetergenti  
e bibite, non vengano versati all'interno dell'apparato.  
3. AVVERTENZE  
Tutte le avvertenze poste sull'apparato e sul libretto di istruzioni  
sono importanti e devono essere seguite.  
14. RIPARAZIONI  
Gli apparati Hafler devono essere riparati da personale qualificato  
quando:  
4. SEGUIRE LE ISTRUZIONI  
Tuttle le istruzioni operative e di funzionamento devono essere  
seguite.  
A. Il cavo di alimentazione o la spina sono danneggiati  
5. TEMPERATURA  
L'apparato deve essere mantenuto lontano da tuttle le zone ad alta  
temperature, termosifoni, termoconvettori, stufe e forni, caminetti  
ed altro.  
B. Oggetti sono caduti all'interno del telaio o quando del  
liquido è entrato  
C. Quando l'apparato è stato esposto a pioggia  
6. VENTILAZIONE  
L'apparato deve essere posizionato in aree convenienti per una  
corretta ventilazione. Prestare attenzione che sia consentita  
circolazione d'aria attorno e dentro il cabinet.  
D. Quando l'apparato non sempra funzionare normalmente o  
quando esibisce un cambiamento di prestazioni o  
E. Quando è caduto o il telaio è stato danneggiato  
7. ACQUA E POLVERE  
L'apparato deve essere posizionato lontano da zone contenenti  
acqua, come vasche a bagno, acquari e piscine. Inoltre non deve  
essere impiegato in aree soggette ad allagamento, come le cantine.  
15. ASSISTENZA  
L'utente non deve tentare di prestare assistenza all'apparato, se non  
per quanto esposto nelle istruzioni. Tutti gli altri interventi devono  
essere effettuati da un tecnico specializzato.  
8. REQUISITI DI ALIMENTAZIONE  
L'apparato deve essere connesso solo ad un'alimentazione della  
stessa tensione e frequenza di quanto scritto sulla parte posteriore  
del telaio.  
16. CARRELLI E STAND  
L'apparato deve essere impiegato su carrelli o stand solo se questi  
sono sufficientemente solidi e stabili per la funzione a cui si vuole  
dedicarli.  
9. PROTEZIONE DEL CAVO DI ALIMENTAZIONE  
Il cavo di alimentazione deve essere posizionato in modo di non  
interferire con il movimento di oggetti nella stanza: persone,  
ventilatori, carrelli, eccprestateattenzioneanchecheilcavonon  
sia tagliato o spellato e che non possa tagliarsi e spellarsi.  
La combinazione di carrello ed apparato deve essere mossa con  
cautela. Fermate e partenze improvvise, forze eccessiva e superfici  
irregolari, possono ribaltare la cominzione carrello e apparato.  
10. MESSA A TERRA  
Il cavo di alimentazione è del tipo a tre fili con terra ed è progettato  
pr ridurre il rischio di shock elettrici. Si presume che sia della  
lunghezzasufficienteperlamaggiorpartedegliimpieghi.L'impiego  
di prolunghe e adattatori è sconsigliato se questi non garantiscono  
la potenza sufficiente per i corretto fuinzionamento degli apparati  
connessi. E altersì importante che vengano sempre impiegate  
prolunghe con la configurazaione a tre fili con terra.  
i –  
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T A B L E O F C O N T E N T S  
PERFORMANCE SPECIFICATIONS.........................................................................................................................vi  
Frequency Response Graphs  
SAFETY PRECAUTIONS...........................................................................................................................................v  
INTRODUCTION ................................................................................................................................................... 1  
TECHNICAL DESIGN FEATURES ............................................................................................................................ 1  
FRONT & REAR PANEL VIEWS............................................................................................................................... 4  
SCHEMATIC DIAGRAMS ....................................................................................................................................... 5  
INSTALLATION  
Location ........................................................................................................................................................... 9  
Studio Installations ........................................................................................................................................... 9  
Home Theater Installations ............................................................................................................................... 9  
Input Switch ................................................................................................................................................... 10  
XLR Wiring Configurations ............................................................................................................................. 10  
OPERATION  
Auto Turn-On/Sleep Mode ............................................................................................................................. 11  
Input Sensitivity .............................................................................................................................................. 11  
Low-Pass Crossover ........................................................................................................................................ 11  
Phase Control ................................................................................................................................................. 12  
AC Line .......................................................................................................................................................... 13  
LED Indicator ................................................................................................................................................. 13  
Break-In and Warm Up .................................................................................................................................. 13  
Cleaning and Maintenance ............................................................................................................................. 13  
SERVICE REFERENCE  
PC Board Layout............................................................................................................................................. 14  
Parts List ......................................................................................................................................................... 15  
TRM10s/TRM12s Functional Block Diagrams ................................................................................................. 17  
Input Circuit ................................................................................................................................................... 17  
Mono Sum/Gain Circuit.................................................................................................................................. 17  
Phase Control Circuit...................................................................................................................................... 17  
Buffer/Gain Trim Circuit ................................................................................................................................. 17  
Filter Circuits .................................................................................................................................................. 17  
Class-G Transana Amplifier .......................................................................................................................... 18  
Soft Start Circuit.............................................................................................................................................. 18  
Power On/Off Circuit ..................................................................................................................................... 19  
Signal Sensing Turn-On Circuit....................................................................................................................... 19  
Thermal Protection ......................................................................................................................................... 19  
Circuit Calibration .......................................................................................................................................... 20  
Amplifier Replacement ................................................................................................................................... 21  
Woofer Replacement ...................................................................................................................................... 21  
WARRANTY ......................................................................................................................................................... 22  
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INTRODUCTION  
Thank You and congratulations on your purchase of the HAFLER TRM10s/TRM12s reference monitor, the world's finest  
brand in professional audio equipment.  
The TRM10s (Transana Reference Monitor) is an amplified 10" subwoofer monitor. The TRM12s is an amplified 12"  
subwoofer monitor. Both models offer unmatched quality and performance in a truly professional grade product. The  
TRM10s/TRM12s are great for Professional Studios, Digital Work Stations, Broadcast Booths, and Home Project Studios.  
Although we realize a professional such as yourself already knows a thing or two about pro audio, we urge you to read this  
manual to at least humor our technical writer. For ease of use, this manual is organized into three main sections:Installation,  
Operation, and Service Reference. Installationcovers the set-up of your new HAFLER equipment in the system.  
Operationcovers the controls and how to use them for optimum performance. Service Referencecontains field service  
information useful for technicians and engineers.  
TECHNICAL DESIGN FEATURES  
The TRM10s/TRM12s monitors utilize a specially designed amplifier featuring our innovative Transana circuitry. This  
topology, with its unique input-to-output configuration (derived from our patented Transnova circuit), employs  
MOSFETs in both the power supply and output stages that result in superior sound quality.  
The amplifier features an auto turn-on/off circuit that eliminates the need for a conventional power switch. Input  
signals can be fed into the amplifier via Balanced XLR jacks (where long cable runs are used) or into standard Un-  
Balanced RCA jacks (where short cable runs are used). Each pair of inputs is combined into a mono-summed signal  
before being fed into a 4th order Linkwitz-Riley low-pass crossover, variable from 40Hz~140Hz. If selected, the signal  
is then fed into the Phase Warp that allows the phase of the signal to be adjusted at 90˚, 180˚, or 270˚ increments.  
The TRM10s features a 10" (254mm) low frequency transducer with a cone made from cellulose fibre. A santoprene  
rubber surround that is immune to temperature fluctuations controls woofer damping and reduces 2nd harmonic  
distortions for a very wide and flat frequency response. The transducer also features a 2" (51mm) 4-layer copper voice  
coil wound on an aluminum voice coil former and is driven by a 30 oz. magnet. The TRM12s features a 12" (305mm)  
low frequency transducer made with the same cellulose fibre cone and santoprene rubber surround. The 12" trans-  
ducer features a 2.5" (63.5mm) 4-layer copper voice coil wound on an aluminum voice coil former driven by a 102 oz.  
magnet.  
Both the TRM10s and TRM12s are downfiring subwoofer models and are vented using a radiused Aerovent for reduced  
turbulence. The cabinet is made from acoustically dead 19mm MDF material and is internally packed with damping  
material to eliminate internal resonance.  
1 –  
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Amplifier  
MEHSA  
®
(MaximumEfficiencyHeatSinkApplication)MEHSAisaproprietaryprocessthatyieldsupto5timesbetterheattransfer  
than traditional FET mounting techniques using the exact same components. A multi-layer insulated metal substrate  
operating with minimal thermal resistance spreads heat both downward and outward to quickly dissipate heat from  
each device across the heatsink. This process combined with our DSM technology and MOSFET devices allows us to  
squeeze more watts per cubic inch from every output device as well as provide consistent thermal stability.  
Heat Monster:  
High output MOSFET device  
Clamp Bar  
Solder  
Heat generating component  
(typically  
a
power MOSFET or  
Copper heat spreader  
Dielectric layer  
bipolar semiconductor)  
Thermal grease  
Mica  
Base Layer aluminum  
-
Thermal grease  
Heat sink  
Thermal grease  
Heat sink  
Screw, no pressure on component!  
Multiple heat paths  
Screw  
PC Board  
PC Board  
Heat path  
The Old Way  
The  
Way  
THE RESULT: Better reliability through faster heat dissipation.  
Trans•ana  
®
Transana (TRANSconductance Active Nodal Amplifier) is a circuit that allows the audio signal to pass through the  
amplifier at low voltage. The signal is directly level-shifted to the fixed high voltage rails via a pair of driver transistors.  
Signal linearity is assured by an active node formed by the driver transistors at ultrasonic frequencies. This allows  
amplifier performance similar to Transnova which is highly stable and linear while utilizing the advantages of a non-  
floating power supply.  
THE RESULT: An extended frequency band width accurately supplied to the output stages of the amplifier.  
MOSFET Devices  
®
HAFLER is one of the few manufacturers in the sound community to utilize MOSFET devices in both the power supply  
and output stages. MOSFET (Metal Oxide Semiconductor Field Effect Transistor) devices offer several important  
inherent advantages over the 30 year old technology of bi-polar design. These advantages include: thermal stability,  
fast switching speed, ultra low output impedance and wide bandwidth linearity. In addition, MOSFETs operate very  
similarly to vacuum tubes in that they are more linear than bipolar transistors. However, MOSFETs can deliver the  
midrange clarity without the limitations of transient response and high frequency phase shifting normally associated  
with tube operation.  
THE RESULT: Thermal stability, fast switching speed, ultra low output impedance and wide bandwidth  
linearity.  
2 –  
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Subsonic Filter  
®
The TRM series uses a Subsonic Filter to prevent the woofer from reproducing inaudible frequencies. Subsonic  
frequencies (known as infrasonic frequencies) are signals below the normal human hearing range and are generally  
considered to be below 20Hz. The subsonic filter reduces the energy of these frequencies and restrains the woofer from  
operating outside its optimum linear excursion. This type of electronic control eliminates the mechanical distortion  
caused by a woofer traveling beyond its XMAX, improves power handling, increases reliability and improves sonic  
performance.  
THE RESULT: Improved power handling, increased reliability and improved sonic performance.  
Phase Control  
®
The Phase Control is used to align the arrival time of the subwoofer's  
Reference  
Monitor  
Subwoofer  
low frequency information with high frequency information pro-  
duced by additional reference monitors. Aligning both signals will  
insure that both low and high frequencies arrive at the listening  
position at the same time. This eliminates the possibility of acousti-  
cal cancellation and improves the reproduction of transients.  
+
_
0°  
90° 180° 270° 360°  
THE RESULT: Eliminates phase cancellation and improves transient  
The Phase Control can fix up to 270° degrees in phase shift  
between the outputs of a reference monitor & subwoofer.  
response.  
Woofer  
Santoprene Rubber Surround  
®
Santoprene is a very durable and temperature tolerant material which provides a consistent support necessary for the linear  
motion of the speaker cone. In addition, the damping capabilities eliminate the transmission of sonic disturbances between  
the cone and the frame of the speaker. This greatly improves the accuracy of the woofer's low frequency response.  
THE RESULT: Improves woofer's low frequency response.  
Aluminum Voice Coil Former  
®
The transducer's voice coil former is black anodized aluminum for highly efficient thermal transfer. Another method of  
producing voice coils is with Kapton® formers. Although this material is very resistant to heat, any heat generated by the  
transducer is "trapped" on the copper voice coil windings. HAFLER uses aluminum voice coil formers because aluminum  
acts like a "heat sink" and helps dissipate heat away from the voice coil. This allows winding high temperature copper wire  
in multiple layers for improved efficiency.  
THE RESULT: Improves power handling by efficiently dissipating heat.  
3 –  
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®
0
0
1
1
9
1 4 0  
8
na  
7
6
5 0  
-
0d  
-
-
2
-
- 1 5  
18  
-
®
0
0
1
1
9
1 4 0  
8
na  
7
6
5 0  
-
0d  
-
-
2
-
8
-
-1  
4 –  
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SC H E M A T I C DI A G R A M  
NOTES: Unless specified otherwise  
1. All resistors in ohms.  
2. All capacitors in microfarads.  
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!
Qualified Service Personnel Only  
Input Circuit / Power Supply Schematic  
6 –  
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SC H E M A T I C DI A G R A M  
NOTES: Unless specified otherwise  
1. All resistors in ohms.  
2. All capacitors in microfarads.  
Removable Center Spread  
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!
Qualified Service Personnel Only  
Output Circuitry  
Removable Center Spread  
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I N S T A L L A T I O N  
LOCATION  
The acoustic properties and size of the listening environment can drastically influence the SPL (Sound Pressure Level) and f3  
(-3dB roll-off) of the subwoofer. However it's important to note that large or small acoustic spaces have little to no effect on the  
subwoofer cone excursion & box"Q." For the most part, we'll discuss the optimum location for two different installation methods:  
Studio Installation and Home Theater Installation.  
Studio Installations  
In studio installations, damping material is usually used on the walls and ceilings make the room acoustically dead.The  
main monitors are typically located 3' to 6' from the mixing console and therefore considered a near field (close field)  
application. In this type of anechoic environment, the subwoofer will tend to experience minimal "Boundary Loading"  
effects. For studio installations, HAFLER recommends experimenting with different locations within the studio that minimizes  
rattles or vibration of other equipment. You can fire the subwoofer downward (FIG. 1) or fire the subwoofer directly facing  
forward (FIG. 2). In either application keep the subwoofer cabinet at least 5" (12.7 cm) away from any wall.  
Keep subwoofer enclosure  
5" (12.7 cm) from any wall  
FIG. 1  
Downward Firing  
FIG. 2  
Forward Firing  
Home Theater Installations  
Home Theater installations are typically medium sized  
living rooms or game rooms that have large flat, uncov-  
ered walls. Acoustics in this type of installation can have  
a big effect on the SPL and f3 of the subwoofer because  
the walls are very reflective. The only elements in these  
installations that acoustically "absorb" sounds are  
Right  
Front  
Center  
Front  
Left  
Front  
furniture and carpet. Dramatic "Boundary Loading" can  
be achieved by locating the subwoofer under a table, next  
to a wall or in a corner (FIG. 4), thus increasing SPL and  
lowering the f3 of the subwoofer system. Locating the  
subwoofer in the middle of the room or in a large open  
area where there are few reflective surfaces will cause a  
decrease in SPL and an increase in f3. Experiment with  
different locations in the room to determine which type of  
bass response works best in your home theater.  
Subwoofer  
Left  
Rear  
Right  
Rear  
Listening Area  
FIG. 4  
Position the subwoofer near a wall or in a corner  
- 9-  
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INPUT SWITCH  
The unbalanced input uses a conventional RCA phone jack. Move the input switch to RCA UNBALANCED to use this jack. The  
balanced input jack is an XLR plug. The XLR jack is connected according to the IEC and AES standard. Move the input switch  
to XLR BALANCED to use this jack.  
Balanced Input  
Unbalanced Input  
Move input switch to XLR BALANCED to use the  
XLR connectors  
Move input switch to RCA UNBALANCED to use  
RCA connectors  
XLR Bal  
XLR Bal  
60 70  
80  
-12 -9  
60 70  
80  
90  
-12 -9  
OFF  
90  
-6  
OFF  
-15  
-18  
-21  
-6  
-15  
-18  
-21  
100  
50  
-3  
50  
-3  
-24  
-24  
Signal In  
(balanced)  
0dB  
Signal In  
(Unbalanced)  
-27  
0
4
2 3 4  
Signal In  
(balanced)  
0dB  
Signal In  
(Unbalanced)  
-27  
0
4
2 3 4  
-30dB  
Gain  
1
-30dB  
Gain  
1
40HZ  
120  
Low Pass  
Phase @ 80Hz  
0˚  
- 270˚  
- 180˚ 2 + 3  
- 90˚  
40HZ  
120  
Low Pass  
Phase @ 80Hz  
0˚  
- 270˚  
- 180˚ 2 + 3  
- 90˚  
ALL OFF  
2
ALL OFF  
2
dB relative to  
max gain in  
3dB steps  
RCA Unbal  
dB relative to  
max gain in  
3dB steps  
RCA Unbal  
2 + 3 + 4  
2 + 3 + 4  
XLR WIRING CONFIGURATIONS  
Using the balanced XLR input is recommended for installations where long cable runs are used or when the potential for stray  
electromagnetic fields from other wires exists. There are balanced and unbalanced methods in which the XLR inputs can be used.  
The first method is an XLR Balanced Input using 3-conductor cable with signal carried on the first conductors, equal in amplitude  
and opposite in phase, and the third conductor being a ground "drain". In this configuration, noise common on both phases of  
the signal is effectively "canceled" out. The second method is an XLR Unbalanced Input using 2-conductor cable with the signal  
carried in the center conductor and the ground carried on the shield. Many popular mixers use unbalanced outputs and can be  
used with the XLR balanced input. However, in this type of configuration we recommend using twisted pair cable or short cable  
lengths to prevent residual ground noise.  
XLR Unbalanced Input  
Connect () and GND (shield) terminals at both ends of cable to  
prevent unstable amplifier operation  
XLR Balanced Input  
Check output from source for proper signal polarity  
INPUT  
FROM  
SOURCE  
INPUT  
FROM  
SOURCE  
Pin 1 = GND  
Pin 2 = (+)  
Pin 3 = ()  
SHIELD  
Pin 1 = GND  
Pin 2 = (+)  
Pin 3 = GND  
GND  
1
3
2
1
3
2
+
+
10 –  
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OPERATION  
AUTO TURN-ON / SLEEP MODE  
The TRM10s/TRM12s subwoofers automatically turn on when they sense an input signal. When the signal being fed to the  
TRM10s/TRM12s is turned off, the subwoofer's amplifier will turn off and go into "sleep mode." This feature eliminates the  
inconvenience of operating a mechanical switch.  
INPUT SENSITIVITY  
The Input Sensitivity is used to match the TRM10s/TRM12s with signal levels from a variety of mixing consoles. The Input  
Sensitivity uses a potentiometer to match input levels over a 30dB range and is variable from +1dBu to -30dBu. The numbers listed  
on the back panel indicate the input in dBu required to produce an output of 100dB SPL @ 1 meter. When the control is set to  
its full CLOCKWISE position the monitor is matched to +1dB input level (the input circuit is less sensitive to the amplitude of the  
input signal). When the control is set to its full COUNTER CLOCKWISE position the monitor is matched to -30dB input level (the  
input circuit is more sensitive to the amplitude of the input signal).  
LOW-PASS CROSSOVER  
TheLow-PassCrossoverisusedtosettheelectricalcutoffpoint  
of the subwoofer enclosure. The Crossover uses a variable  
potentiometer to set the cutoff point anywhere between 40Hz  
and 140Hz. When the control is set to its full CLOCKWISE  
position the cutoff frequency is set to 140Hz Low-Pass. When  
thecontrolissettoitsfullCOUNTERCLOCKWISEpositionthe  
cutoff frequency is set to 40Hz Low-Pass.  
It is important to match the Low-Pass crossover point of the  
subwoofer with the High-Pass crossover point of the high  
frequency reference monitors. Mismatching the crossover  
points can cause dips or peaks in the acoustical response.  
Overlapping the crossover points (i.e., subwoofer at 60Hz  
Low-Pass & high frequency monitors at 50Hz High-Pass) will  
cause a peak between 50Hz and 60Hz. Underlapping the  
crossover points (i.e., subwoofer at 40Hz Low-Pass & high  
frequency monitors at 70Hz High-Pass) will cause a dip  
70  
70  
80  
80  
60  
50  
60  
50  
90  
90  
between 40Hz and 70Hz.  
40HZ  
Low Pass  
40HZ  
Low Pass  
120  
120  
*This graph was generated by setting the variable crossover to  
40Hz, 50Hz, 60Hz, 70Hz, 80Hz, 90Hz, 100Hz, 120Hz & 140Hz.  
Electrical Crossover Response*  
11 –  
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PHASE CONTROL  
The Phase Control switches allow the TRM10s/TRM12s to be acoustically aligned with other speakers in your system.  
0˚, -90˚, -180˚, or -270˚ degrees of phase shift at 80Hz can be selected using DIP switches 2, 3, and 4. For 0˚ degrees  
of phase shift, leave all three switches in the OFF (up) position. 270˚ degrees of phase shift occurs when switch 2 is  
selected in the ON (down) position. 180˚ degrees can be achieved by selecting both switches 2 and 3 in the ON  
(down) position. Finally, selecting all switches 2, 3, and 4 in the ON (down) position produces 90˚ degrees of phase  
shift.  
Setup Procedure  
1) Place all your speakers and any acoustically significant components in their working location in the  
listening environment.  
2) Insert a sine wave signal into the audio path. Be careful to turn down the level before turning on the amplifiers.  
3) Choose a frequency that corresponds to the crossover frequency between the TRM10s/TRM12s and the full-range  
speakers.  
4) From the listening position, alternate between the TRM10s/TRM12s and the full range speakers and adjust the  
levels until they have the same acoustic output. Use an SPL meter, a microphone on a VU meter, or your ears to  
accomplish this.  
5) With all speakers on, try the 0˚, -270˚, -180˚, and 90˚ degree phase settings. The setting with the highest SPL  
reading from your listening position will produce the most effective acoustic alignment.  
6) Set the TRM10s/TRM12s gain control according to your preference. This will not affect the acoustic alignment of  
your system.  
Here is a list of some items that can affect acoustic alignment: Relocating speakers, changing the TRM10s/TRM12s  
Low Pass frequency, changing the acoustic environment (i.e., traps, diffusors, etc.), changing the listening position.  
Although this procedure produces the maximum achievable acoustic gain for your system, listening tests may still lead  
you to prefer another setup.  
12dB  
High Pass  
90° Lead  
Sine  
Wave  
12dB  
Low Pass  
90° Lag  
Input (2 cycles)  
+
_
Moved ahead 1/4 cycle  
Moved back 1/4 cycle  
90 phase lead  
90 phase lag  
Phase Shift  
180° (cancellation)  
90 Phase Lead and Lag  
Example of how phase misalignment between high frequency speakers and a subwoofer can cause cancellation  
12 –  
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AC LINE  
The TRM10s/TRM12s operate from a 115 VAC/60Hz power line. The TRM10sCE/TRM12sCE operate from a 230 VAC 50/60Hz  
power line. Connection is made by a 16 gauge, IEC Type 320, grounded line cord. For safety considerations only a properly  
grounded (earthed) receptacle should be used. If a grounded circuit is not available, do not break off the ground pin; use the proper  
adapter plug for a two wire receptacle with the grounding plug suitably connected to earth ground.  
IMPORTANT: The power line fuse is mounted on the rear panel. If this fuse blows, replace it only with the same  
type and rating as indicated in the parts list.  
!
LED INDICATOR  
Amplifier operation is monitored internally and has a status LED.  
COLOR  
GREEN  
NO LED  
STATUS  
Power on  
Sleep Mode  
Thisindicatorcanbeusedforsystemtroubleshooting. TheLEDwill  
illuminate GREEN if signal is present at the subwoofer's input. The  
LED will turn off and the amplifier will go into sleep mode if signal  
is not present.  
BREAK-IN and WARM-UP  
We recommend initially breaking in the subwoofer for approximately 8 hours with musical information to establish the monitor's  
naturalbassresponse.Toachievethebestsonicperformanceandimagestabilityfromtheinternalamplifier,werecommendletting  
it warm up for 1 hour before beginning any critical listening.  
CLEANING & MAINTENANCE  
There is no requirement for regular maintenance on the electronic components of the monitor. If the cabinet or woofer becomes  
soiled, it can be cleaned using a damp, soft cloth. If the monitor is located in a particularly dusty environment, cleaning the inside  
with compressed air or vacuuming every 18 to 24 months is sufficient.  
13 –  
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PC BOARD LAYOUT  
C R 1 0  
R 1 2 5  
R 1 2 6  
R 1 2 4  
C 1 6  
C 1 5  
R 1 2 2  
R 8 1  
R 8 0  
C R 7  
R 1 9  
R 4 7  
R 3 7  
R 2 2  
D S 1  
C R 2  
R 4 3  
R 2 1  
C 3 1  
R 1 3 2  
C 4 8  
R 1 2 9  
R 1 2 0  
R 1 2 3  
C 2 5  
R 1 0 7  
R 1 0 0  
R 1 4 5  
C 2 7  
C R 9  
R 6 1  
R 7 8  
R 6 2  
R 5 7  
C 3 9  
C 5 3  
C 2 6  
C 8 5  
R 1 0 4  
R 5 4  
C 4 1  
R 2 4  
R 3 2  
R 5 2  
C 4 0  
R 1 5  
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PA R T S LI S T  
DESIGNATOR  
VALUE  
PART #  
R42  
R43  
R44  
R45  
R46  
R47  
R48  
R49  
R5  
R50  
R51  
R52  
R53  
R54  
R55  
R56  
R57  
R58  
R59  
R6  
R60  
R61  
R62  
R63  
R64  
R65  
R66  
R67  
R68  
R69  
R7  
R70  
R71  
R72  
R73  
R74  
R75  
R78  
R8  
R80  
R81  
R82  
R83  
R84  
R85  
R86  
R9  
R98  
RV1  
RV1  
C1  
C10  
C11  
C12  
C13  
C14  
C15  
C16  
C17  
C18  
C19  
C2  
C20  
C21  
C22  
C23  
C24  
C25  
C26  
C27  
C28  
47K OHM 1/10W 5%  
1.0K OHM 1/10W 1%  
16.2K OHM 1/10W 1%  
1.0K OHM 1/10W 1%  
RES 28K OHM 1/4W 1%  
2.2M OHM 1/10W 5%  
28K OHM 1/10W 1%  
1.74K OHM 1/10W 1%  
1.0K OHM 1/10W 1%  
5.11K OHM 1/4W 1%  
1.74K OHM 1/10W 1%  
3.3M OHM 1/10W 5%  
2K OHM 1/4W 1%  
RM/10-473B  
RM/10-1001B  
RM/10-1622B  
RM/10-1001B  
RMP/4-2802-04  
RM/10-225B  
RM/10-2802B  
RM/10-1741B  
RM/10-1001B  
RM/4-5111C  
RM/10-1741B  
RM/10-335B  
RM/4-2001C  
RM/10-335B  
RM/10-301B  
RM/4-2430C  
RM/10-474B  
RV-202  
RM/10-1741B  
RM/10-101B  
RM/10-301B  
RM/10-1402B  
RM/10-1402B  
RM/10-301B  
RM/10-1402B  
RM/10-1002B  
RM/10-1741B  
RM/10-1001B  
RM/4-101C  
RM/10-2001B  
RM/10-101B  
RM/10-2800B  
RM/10-100B  
RM/4-101C  
RM/10-1002B  
RM/10-4751B  
RM/10-4751B  
RM/10-681B  
RV-202  
RM/10-301B  
RM/10-301B  
RM/10-2323B  
RM/4-2430C  
RM/10-101B  
RM/10-8251B  
RM1-100-012  
RV-202  
ALL RESISTORS IN OHMS  
R1  
1.0K OHM 1/10W 1%  
RM/10-1001B  
RM/10-473B  
RM/10-1002B  
RM/10-9091B  
RM/10-105B  
RM/10-1002B  
RM/10-133B  
RM/10-1002B  
RM/10-1402B  
RM/10-1001B  
RM/10-1402B  
RM/10-1402B  
RM/10-133B  
RM/10-1002B  
RM/10-9091B  
RM/10-1002B  
RM/10-1002B  
RM/10-621B  
RM/10-621B  
RM/10-1741B  
RMP/4-0000-03  
RMP/4-0000-03  
RM/10-1002B  
RM/10-101B  
RM/10-474B  
RM/10-8251B  
RM/10-1741B  
RV-502Q  
R10  
47K OHM 1/10W 5%  
10K OHM 1/10W 1%  
9.09KOHM 1/10W 1%  
1M OHM 1/10W 5%  
10K OHM 1/10W 1%  
13K OHM 1/10W 5%  
10K OHM 1/10W 1%  
14K OHM 1/10W 1%  
1.0K OHM 1/10W 1%  
14K OHM 1/10W 1%  
14K OHM 1/10W 1%  
13K OHM 1/10W 5%  
10K OHM 1/10W 1%  
9.09KOHM 1/10W 1%  
10K OHM 1/10W 1%  
10K OHM 1/10W 1%  
620 OHM 1/10W 5%  
620 OHM 1/10W 5%  
1.74K OHM 1/10W 1%  
RES 0 OHM 1/4W  
R100  
R101  
R102  
R103  
R104  
R107  
R109  
R11  
R110  
R111  
R112  
R113  
R114  
R12  
R120  
R121  
R122  
R123  
R124  
R125  
R127  
R129  
R13  
R130  
R132  
R136  
R137  
R14  
R145  
R146  
R147  
R15  
R156  
R157  
R158  
R16  
R164  
R17  
R18  
R19  
R2  
3.3M OHM 1/10W 5%  
300 OHM 1/10W 5%  
243 OHM 1/4W 1%  
470K OHM 1/10W 5%  
POT 2K TRIM  
1.74K OHM 1/10W 1%  
100 OHM 1/10W 5%  
300 OHM 1/10W 5%  
14K OHM 1/10W 1%  
14K OHM 1/10W 1%  
300 OHM 1/10W 5%  
14K OHM 1/10W 1%  
10K OHM 1/10W 1%  
1.74K OHM 1/10W 1%  
1.0K OHM 1/10W 1%  
100 OHM 1/4W 5%  
2.0K OHM 1/10W 1%  
100 OHM 1/10W 5%  
280 OHM 1/10W 1%  
10 OHM 1/10W 5%  
100 OHM 1/4W 5%  
10K OHM 1/10W 1%  
4.75K OHM 1/10W 1%  
4.75K OHM 1/10W 1%  
680 OHM 1/10W 5%  
POT 2K TRIM  
300 OHM 1/10W 5%  
300 OHM 1/10W 5%  
232K OHM 1/10W 1%  
243 OHM 1/4W 1%  
100 OHM 1/10W 5%  
8.25K OHM 1/10W 1%  
RES 10 OHM 1W  
POT 2K TRIM  
8.25K OHM 1/10W 1%  
KNOB 2-3 WAY CROSSOVER KN-1824-A  
DUAL 5K LINEAR  
10UF 16V  
10PF 50V  
10UF 16V  
.1UF 50V  
CAP 3300UF 35V  
.47UF 50V  
.1UF 50V  
.1UF 50V  
.1UF 50V  
.1UF 50V  
.1UF 50V  
CAP 3300UF 63V  
.1UF 50V  
10PF 50V  
.47UF 50V  
.47UF 50V  
.1UF 50V  
.1UF 50V  
47PF 100V  
.1UF 50V  
RES 0 OHM 1/4W  
10K OHM 1/10W 1%  
100 OHM 1/10W 5%  
470K OHM 1/10W 5%  
8.25K OHM 1/10W 1%  
1.74K OHM 1/10W 1%  
POT 5K  
2.61K OHM 1/10W 1%  
100 OHM 1/4W 5%  
10M OHM 1/10W 5%  
10K OHM 1/10W 1%  
6.81K OHM 1/10W 1%  
3.3M OHM 1/10W 5%  
10K OHM 1/10W 1%  
1.33K OHM 1/4W 1%  
1.33K OHM 1/4W 1%  
4.75K OHM 1/10W 1%  
8.25K OHM 1/10W 1%  
10K OHM 1/10W 1%  
100K OHM 1/10W 5%  
604K OHM 1/10W 1%  
1.0K OHM 1/10W 1%  
100K OHM 1/10W 5%  
2.2M OHM 1/10W 5%  
100K OHM 1/10W 5%  
56K OHM 1/10W 5%  
1.0K OHM 1/10W 1%  
10K OHM 1/10W 1%  
1M OHM 1/10W 5%  
121 OHM 1/10W 1%  
510 OHM 1/10W 5%  
121 OHM 1/10W 1%  
RM/10-2611B  
RM/4-101C  
RM/10-106B  
RM/10-1002B  
RM/10-6811B  
RM/10-335B  
RM/10-1002B  
RM/4-1331C  
RM/4-1331C  
RM/10-4751B  
RM/10-8251B  
RM/10-1002B  
RM/10-104B  
RM/10-6043B  
RM/10-1001B  
RM/10-104B  
RM/10-225B  
RM/10-104B  
RM/10-563B  
RM/10-1001B  
RM/10-1002B  
RM/10-105B  
RM/10-1210B  
RM/10-511B  
RM/10-1210B  
R20  
R21  
R22  
R23  
R24  
R25  
R26  
R27  
RM/10-8251B  
RV-502DPA  
CER-106SM  
CDS-100CAAA  
CER-106SM  
CYV-104  
R278  
R28  
CERS-338B  
CYV-474  
R29  
KNOB 2-3 WAY CROSSOVER KN-1824-A  
CDS-104CBBB  
CDS-104CBBB  
CDS-104CBBB  
CDS-104CBBB  
CDS-104CBBB  
CERS-338E  
CDS-104CBBB  
CDS-100CAAA  
CYV-474  
R29  
R3  
R30  
R31  
R32  
R33  
R34  
POT QUAD 9MM 20K  
1.0K OHM 1/10W 1%  
100 OHM 1/4W 5%  
300 OHM 1/10W 5%  
47K OHM 1/10W 5%  
4.75K OHM 1/4W 1% 1206  
2K OHM 1/4W 1%  
RV-203Q  
RM/10-1001B  
RM/4-101C  
RM/10-301B  
RM/10-473B  
RM/4-4751C  
RM/4-2001C  
RM/4-821C  
RM/10-335B  
RM/10-100B  
RM/10-301B  
RM/10-301B  
RM/10-473B  
RM/10-2002B  
RM/4-4751C  
R35  
R36  
R37  
R38  
R39  
R4  
R40  
R41  
820 OHM 1/4W 5%  
3.3M OHM 1/10W 5%  
10 OHM 1/10W 5%  
300 OHM 1/10W 5%  
300 OHM 1/10W 5%  
47K OHM 1/10W 5%  
20.0K OHM 1/10W 1%  
4.75K OHM 1/4W 1%  
CYV-474  
CDS-104CBBB  
CDS-104CBBB  
CDS-470DAAA  
CDS-104CBBB  
CER-106SM  
10UF 16V  
15 –  
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Q19  
Q2  
Q2  
Q21  
Q23  
Q3  
Q37  
Q5  
Q6  
Q7  
Q8  
U1  
U10  
U16  
U2  
U112  
U3  
U4  
U6  
U15  
J6  
J1  
XSTR NPN MPSA06  
XSTR MMBT3904LT1 NPN SS-0792  
Regulator LM317  
XSTR MPS-A56  
XSTR MMBT3906LT1 PNP SS-0791  
SS-102A  
C29  
C3  
10UF 16V  
.1UF 50V  
10UF 16V  
.1UF 50V  
CAP 3300UF 63V  
100PF 50V  
47PF 100V  
CAP 3300UF 35V  
.1UF 50V  
CAP 3300UF 63V  
47PF 100V  
47PF 100V  
.1UF 50V  
220PF 50V  
220PF 50V  
.1UF 50V  
.01UF 50V  
100PF 50V  
.1UF 50V  
.22UF 50V  
.1UF 50V  
.1UF 50V  
CER-106SM  
CYV-104  
CER-106SM  
CDS-104CBBB  
CERS-338E  
CDS-101CAAA  
CDS-470DAAA  
CERS-338B  
WP-2350  
SS-101A  
C30  
C31  
C32  
C33  
C34  
C35  
C36  
C37  
C38  
C39  
C4  
C40  
C41  
C42  
C43  
C44  
C45  
C46  
C47  
C48  
C5  
C51  
C52  
C53  
C55  
C56  
C57  
C58  
C59  
C6  
C64  
C7  
Regulator LM337  
XSTR MPS6521  
XSTR MMBTA06L  
XSTR MMBT3906LT1 PNP SS-0791  
XSTR MMBT3906LT1 PNP SS-0791  
XSTR MMBT3904LT1 NPN SS-0792  
OPAMP TL072CD  
OPAMP TL072CD  
OPAMP TL072CD  
OPAMP TL072CD  
OPAMP DUAL LM833D SS-187SM  
OPAMP DUAL LM833D SS-187SM  
OPAMP DUAL LM833D SS-187SM  
OPAMP DUAL LM833D SS-187SM  
WP-2348  
SS-209  
SS-102SM  
CYV-104  
CERS-338E  
CDS-470DAAA  
CDS-470DAAA  
CYV-104  
CDS-221CAAA  
CDS-221CAAA  
CYV-104  
CDS-103CBBB  
CDS-101CAAA  
CYV-104  
CYV-224  
CYV-104  
CYV-104  
CDS-104CBBB  
CYV-474  
SS-143SM  
SS-143SM  
SS-143SM  
SS-143SM  
COMPTR DUAL LM393D SS-207SM  
CONN IEC POWER INLET CC-1174  
CONN XLR NEUTRIK NC3FAH-2-0 CC-2339  
CONN XLR NEUTRIK NC3FAH-2-0 CC-2339  
HEADER 4 SOCKET  
.1UF 50V  
J8  
J9  
J10  
J5  
J5  
.47UF 50V  
.47UF 50V  
.1UF 50V  
.1UF 50V  
.1UF 50V  
CC-2352  
CC-2353  
CYV-474  
HEADER 6 SOCKET  
4 AMP 3AG SLO-BLO FUSE  
!
!
!
CDS-104CBBB  
CDS-104CBBB  
CDS-104CBBB  
CDS-104CBBB  
CDS-104CBBB  
CDS-103CBBB  
CDS-221CAAA  
CYV-224  
CDS-221CAAA  
CYV-104  
CER-105CSM  
CER-105CSM  
CERS-338E  
CER-106SM  
CER-476SM  
CER-105CSM  
CDS-121CAAA  
CDS-121CAAA  
CER-105CSM  
CDS-104CBBB  
CER-106SM  
CER-106SM  
SS-176-059  
FS-004SB  
FUSE HOLDER CAP 3AG FS-1175  
FUSE HOLDER BODY PC MOUNT FS-1176  
SH 2X3 JUMPER CC-648  
HDR 6 PIN DUAL ROW CC-673  
RCA JACK GOLD TWIN CCH-228  
THERMISTOR 10K EPOXY SS-0426-066  
J5  
.1UF 50V  
.1UF 50V  
TP1  
TP1  
TP2  
TS2  
CHASS1  
DS1  
.01UF 50V  
220PF 50V  
.22UF 50V  
220PF 50V  
.1UF 50V  
!
!
HARNESS P1000 CHASSIS GND  
4 POS DIP SWITCH  
FA-1401-A  
SW-1649  
C72  
C73  
C74  
C8  
C84  
C85  
C86  
C87  
C88  
C89  
C9  
!
!
!
Transformer  
IEC Linecord  
10" Woofer  
12" Woofer  
Plastic Foot  
Neoprene Pad  
TT-2327-D  
WIR9856  
FG26388WP  
FG26394WP  
SHW10459  
HDW10441  
1UF 50V  
1UF 50V  
CAP 3300UF 63V  
10UF 16V  
47UF 16V  
1UF 50V  
120PF 50V  
120PF 50V  
1UF 50V  
!
1/4"-20x2" Phillips Screw HDW10460  
MODEL TRM10sCE/TRM12sCE 230V Differences  
.1UF 50V  
C93  
C94  
CR1  
10UF 16V  
10UF 16V  
DIO BYV 28-150  
BRIDGE RECTIFIER 8A  
DIO DUAL BAV99L  
DIO DUAL BAV99L  
European Linecord <HAR> WIR10138  
Fuse Holder Cap 5X20mmFS-1269-A  
1.25A SLO-BLO Fuse  
RES 0 OHM 1/4W  
!
!
!
!
J5  
J5  
R126  
FS-1474-A  
RMP/4-0000  
CR10  
CR11  
CR12  
CR14  
CR15  
CR16  
CR17  
CR18  
CR19  
SS-0799-068  
SS-260SM  
SS-260SM  
!
!
DIO ZENER MMBZ5240BL SS-1052  
DIO DUAL BAV99L  
BRIDGE RECTIFIER 8A  
DIO BYV 28-150  
DIO ZENER MMBZ5240BL SS-1052  
DIODE ZENER  
MMBZ5231BLT1  
DIO MMBD914L  
DIODE ZENER  
MMBZ5231BLT1  
DIO MMBD914L  
DIO DUAL BAV99L  
DIO MMBD914L  
DIO MMBD914L  
DIO MMBD914L  
GREEN LED  
SS-260SM  
SS-0799-068  
SS-176-059  
Components marked with this symbol are safety critical  
and should only be replaced with identical components.  
!
!
Los componentes marcados con el simbolo son  
SS-0775  
SS-803SM  
imprescindibles para la protección del equipo, por lo  
cual que solo sean reemplazados por los mismos  
componentes.  
CR2  
CR20  
!
SS-0775  
CR3  
CR4  
CR5  
CR6  
CR7  
CR8  
CR9  
Q11  
Q12  
Q13  
Q17  
Q18  
SS-803SM  
SS-260SM  
SS-803SM  
SS-803SM  
SS-803SM  
SS-2428-054  
SS-803SM  
!
Les componsants marqués du symbole  
pensables à la sécuritée et ne peuvent être remplacés  
qu'avec des composants identiques.  
sont indis-  
!
Bauteile, die mit einem  
sehr wichtig und dürfen nur mit den orginal Ersatzteilen  
ausgetauscht werden.  
gekenzeichnet sind, sind  
!
DIO MMBD914L  
!
!
XSTR MMBT5088L NPN SS-0114  
XSTR MMBT5088L NPN SS-0114  
XSTR MMBT3904LT1 NPN SS-0792  
XSTR MMBT3904LT1 NPN SS-0792  
XSTR MMBT3906LT1 PNP SS-0791  
I componenti contrassegnati da  
sicurezza e devono essere rimpiazzati solo con ricambi  
di valore identico.  
!
sono critici per la  
16 –  
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TRM10S/12S FUNCTIONAL BLOCK DIAGRAMS  
Qualified Service Personnel Only  
!
Input circuit  
INPUT CIRCUIT  
The stereo input signals are connected to the amplifier  
through balanced XLR connectors J8 and J1, or  
unbalanced RCA connector TP2. Unbalanced operation  
can be selected with switch DS1, which grounds the RCA  
shell through R37. Input buffers U1 and U10 provide a  
stable input impedance, dominated by R10, R4, R42, and  
R32. The left and right balanced summing amplifiers U4A  
and U3A sum the inverting and non-inverting signals to  
form unbalanced right and left channel outputs RCH and  
LCH. The Common Mode Rejection Ratio (CMRR) of each  
channel is optimized with trimpots R8 and R58.  
RCH  
INPUT  
J8  
TP2  
R10  
R4  
NON-INV  
BUFFER  
U1A  
RCH  
BAL  
SUMMING  
AMP  
U4A  
R109, R110,  
R111,R112  
BAL / UNBAL  
DS1  
R37  
RCH  
INV  
BUFFER  
U1B  
CMRR  
R8  
LCH  
BAL  
SUM  
AMP  
U3A  
NON-INV  
BUFFER  
U1OA  
LCH  
LCH  
INPUT  
J1  
TP2  
R42  
R32  
R64 , R61  
R104 , R62  
CMRR  
R58  
INV  
BUFFER  
U1OB  
Mono Sum/Gain Circuit  
Left and right input signals LCH and RCH are summed to mono  
through R49 and R51. The mono signal is then attenuated in two  
MONO SUM / GAIN CIRCUIT  
stages with dual potentiometer RV1 which is accessible from the rear  
panel heatsink and serves as the gain control. R56 and R83 determine  
the maximum achievable attenuation level. R59 and R66 help to  
reduce the tracking errors of RV1 due to absolute resistance. Buffer  
U3B unloads the attenuators and provides 6dB of gain with R25 and  
R73.  
SUB ATTN  
R59, R56  
GAIN  
U3B  
R25  
R73  
L/R SUM  
R49, R51  
RCH  
LCH  
RV1B  
R66, R83  
RV1A  
Phase Control Circuit  
PHASE CONTROL CIRCUIT  
BUFFER / GAIN TRIM  
CIRCUIT  
The output signal of U3B goes directly to U4B if DS2 is left open  
(0 degrees phase shift). If only DS2 is closed, the signal goes through 2  
cascaded phase shift stages built around U6A and U6B, and  
experiences a 270 degree phase shift. Additionally closing DS3 causes  
the phase shift to be 180 degrees. Adding another closed switch DS4  
results in only 90 degrees of phase shift. DS2, DS3, and DS4 are  
labeled 2,3, and 4 respectively on the rear panel heatsink.  
DS2  
-180º PHASE  
SHIFT  
-90º PHASE  
SHIFT  
BUFFER/  
GAIN TRIM  
U4B, R137,  
R74, R136  
U6A  
U6B, R113, R120,  
R114, R123,  
C89, C74,  
R100, R107,  
R101, R132,  
C86, C73,  
D53  
D54  
Buffer/Gain Trim Circuit  
U4B works as a buffer, and as a factory gain trim using trimpot R136.  
The voltage gain of the stage is (R74+R136)/R137.  
FILTER CIRCUITS  
2ND ORDER VARIABLE LP  
Filter Circuits  
TU112A and U112B form two cascaded 2nd order variable low pass  
crossover filters, for an overall 4th order 24dB/octave Linkwitz-Riley  
response. The quad potentiometer R29 is accessible from the rear  
panel heatsink and indicates the 40Hz to 140Hz range of the variable  
Low-Pass crossover. Following these circuits is a 2nd order subsonic  
High-Pass filter at U2A. The signal then connects to the Class-G  
amplifier.  
2ND ORDER VARIABLE LP  
U112A  
U112B  
R29A, R85  
R29B, R98  
C64, C48  
R29C, R164  
R29D, R130  
C46, C45  
2ND ORDER  
SUBSONIC HP  
U2A  
CLASS G AMPLIFIER  
C36, C42  
R44, R82  
17 –  
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!
Class-G Trans•ana Amplifier  
+HV  
The transistor Q8 is configured as a  
switch, which controls the current  
source Q5, of the input differential  
amplifier Q11 and Q12. If the power  
On/Off, Signal Sensing, and Thermal  
Protection circuits have all stopped  
pulling to -15V, the turn-on process  
begins, and the voltage at the emitter  
of O8 slowly ramps up to zero Volts  
according to the charging time of soft  
start components R13, C93, and C94.  
15V is divided between R40 and R65,  
and imposed across the base-emitter  
of Q5 and R35, causing current  
+ 15V  
POS  
G
POS  
G
POS PRE-  
+LV  
DRIVER  
Q13  
Q9  
DRIVER  
Q18  
CR1  
I MIRROR  
Q6, Q7  
POS  
OUT  
Q4  
OUT  
BIAS  
Q37  
R9  
DRIVER  
Q19  
LOCAL  
AMPLIFIER  
DIFF  
AMP  
FB  
FB  
out  
R46  
C10  
Q21  
C47  
R86  
<out  
NEG  
OUT  
Q10  
Q11, Q12  
DC  
OFFSET  
U2B, R47, C22  
source Q5 to turn the amplifier on.  
CR17  
-LV  
I
R13  
SOURCE  
R40, R65  
Q5,R35  
C93 SOFT  
C94 START  
Q8  
NEG PRE-  
DRIVER  
Q17  
The input signal is connected across  
the differential amp transistors Q11  
and Q12. U2B is configured as a DC-  
servo integrater to null any DC at the  
output.  
NEG  
G
NEG  
G
Q1  
DRIVER  
Q23  
- 15V  
-HV  
The output of the differential amplifier  
is fed to the positive pre-driver Q18,  
and to the curent mirror which mirrors the inverted input current of Q6 into O7 and delivers it to the negative pre-driver  
Q17. The pre-driver current is split between the three current paths of the bias and the driver circuit according to the factory  
bias setting of trimpot R9, and the temperature of Q37. Q37 is thermally linked to the heatsink, and compensates for the  
gate-voltage temperature coefficient of the output MOSFETs. Q19 drives the positive output MOSFET Q4, and Q21 drives the  
negative output MOSFET Q10. Local feedback components C47 and R86 help to stabilize this output stage.  
At low output voltages, current flows to the woofer from the lower voltage rail +LV or -LV through the diodes CR1/CR17 and  
output MOSFETs Q4/Q10. When the output voltage approaches or exceeds these lower voltage rails, output current flows  
from the higher voltage rail +HV or -HV through CLASS-G MOSFET Q9/Q1 and output MOSFETS Q4/Q10.  
Positive G driver Q13 turns on class G MOSFET Q9 when the base-emitter voltage exceeds 0.7V. This occurs when  
(OUT - 1.4 - 5.1V) - (+LV - 0.7 - 10) > 0.7V, which reduces to OUT > +LV - 3.5V. A similar equation can be applied to the  
negative class G driver Q23. The resulting behavior can be observed as the class G rail on the source of the output MOSFET  
tracking 3.5V higher (or lower) than the output signal.  
Soft Start Circuit  
The amplifier soft start circuit is controlled by three On/Off circuits:  
Power On/Off, Signal Sensing, and Thermal Protection. The "diode  
SOFT START CIRCUIT  
OR" connection of CR5, CR6, and CR3 causes the amplifier to turn off  
ON  
INDICATOR  
LED  
Q2  
R50  
R13  
C93  
C94  
Q8  
ON / OFF  
CR5  
if power On/Off is low or Signal Sensing is low or the Thermal Protec-  
tion is low. The amplifier will turn on only if all these circuit outputs  
are high. In this all-high condition, CR5, CR6, and CR3 are open  
circuited or back-biased, allowing R13 to turn on Q2 and Q8, illumi-  
nating LED CR8 and turning on the amplifier. Q8 is turned on slowly,  
according to the time constant of R13 and C93 and C94. This "soft  
start" behavior eliminates audible turn on transients.  
SOFT  
START  
DELAY  
CR6  
CR3  
CR8  
18 –  
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!
Power On/Off Circuit  
POWER ON / OFF  
The power on/off circuit is designed to turn the amplifier on slowly and  
off quickly. When AC power is initially applied to the subwoofer, AC  
signals on the secondary of the power transformer are negatively  
rectified through CR2 and CR7 into peak holding capacitor C31, and  
divided by R19 and R20. When the resulting DC voltage at pin 2 of  
U15A is lower than the reference voltage of -1.4 at pin 3, the output of  
U15 goes high, allowing the soft start circuitry to slowly turn on the  
amplifier. When AC power is removed from the subwoofer, pin 2 very  
quickly goes toward 0V and flips U15A low to -15V, immediately  
turning the amplifier off before the power supplies collapse.  
REFERENCE  
CR15  
R18  
COMPARATOR  
U15A  
ON / OFF  
CR5  
AC POWER  
RECTIFIER  
CR2,CR7  
R12, C31  
R19, R20  
Signal Sensing Turn-On Circuit  
The amplifier will not turn on until an input signal is detected. The  
first stage of the detection circuit amplifies the WOOFER signal by  
40dB - to insure that even the smallest input signal is detected - and  
high pass filters it to eliminate DC offset errors. This amplified signal  
is negatively rectified by CR9 and held by C85. When the voltage at  
pin 6 of U16B goes lower than the -0.15V reference at pin 5, the  
output goes high, allowing the soft start circuitry to turn the amplifier  
on. After signal is removed, the 470-second time constant of C85 and  
R145 will discharge slowly towards 0V until it is higher than -0.15V,  
causing U16B to go low to -15V, turning the amplifier off.  
SIGNAL SENSING TURN-ON  
REFERENCE  
R103, R84  
SIGNAL  
RECTIFIER  
AND HOLD  
CR9, R145  
C85  
SIGNAL AMPLIFIER  
U16A  
COMP  
U16B  
ON / OFF  
CR3  
R57, R75  
C28, C84  
Thermal Protection  
The thermal protection turns off the amplifier when the heatsink  
reaches an excessively high temperature. This condition is detected by  
the NTC (Negative Temperature Coefficient) thermistor TS2. At higher  
temperatures, TS2 has a lower resistance - causing a higher voltage at  
pin 6 of U15B. When this voltage exceeds the reference voltage at pin  
5, the output of U15B goes low to -15V and turns the amplifier off.  
THERMAL PROTECTION  
COMPARATOR  
TEMP  
ON / OFF  
CR6  
U15B  
TS2, R147  
R22, R23  
19 –  
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!
Qualified Service Personnel Only  
CIRCUIT CALIBRATION  
Bias:  
The bias control establishes the quiescent Class AB output current of the amplifier. The bias should not need readjustment from  
the factory setting: however, if the amplifier is repaired and the output devices have been changed, calibrating the bias is  
necessary. Disconnect the power to the amplifier before removing the heatsink assembly from the speaker cabinet. To adjust  
the bias, remove the jumper TP1 and connect an ammeter across the exposed pins. Adjust trimpot R9 fully counter-clockwise  
before reapplying power to the unit. After the Soft Start turn-on has settled, note the ammeter reading. Adjust R9 until an  
additional 50mA is added to the ammeter reading. Replace jumper TP1. If the green power LED is not illuminated, apply a low  
frequency input signal to the amplifier input to activate the signal sensing turn on circuit. Be sure to remove the signal before  
adjusting the bias.  
WARNING: Only a competent technician should attempt the above procedure.  
20 –  
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Qualified Service Personnel Only  
!
AMPLIFIER REPLACEMENT  
1. Remove (10) screws from amplifier using a Phillips screwdriver  
2. Remove amplifier from enclosure  
3. Disconnect the (2) speaker wires (FIG. 1)  
4. Disconnect the transformer primary molex (FIG. 1)  
5. Disconnect the transformer secondary molex (FIG. 1)  
6. Follow steps 1-5 in reverse order to install amplifier  
!
CAUTION: Reconnect wires as indicated in diagram!  
FIG. 1  
Amplifier Replacement  
WOOFER REPLACEMENT  
1. Remove (8) screws from woofer using a Phillips screwdriver  
2. Remove woofer from enclosure  
3. Disconnect (2) speaker wires (FIG. 2)  
4. Follow steps 1-3 in reverse order to install woofer  
!
CAUTION: Reconnect wires as indicated in diagram!  
FIG. 2  
Woofer Replacement  
21 –  
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SERVICE POLICY AND LIMITED WARRANTY  
Rockford Corporation (Hafler Division) offers a limited warranty on Hafler products on the following terms:  
Length of Warranty  
1 year on Subwoofer Monitors  
What is Covered  
This warranty applies only to products sold to the original owner and is non-transferable. This warranty only applies  
tounitssoldinthecontinentalUnitedStates.Youarerequiredtohaveacopyofthereceiptstatingthecustomer'sname,  
dealer name, product purchased and date of purchase.  
Products found to be defective during the warranty period will be repaired or replaced (with product deemed to be  
equivalent) at Hafler's discretion.  
What is NOT Covered  
1. Damage caused by accident, abuse, improper operations, water, theft  
2. Service performed by anyone other than Hafler or an Authorized Hafler service center  
3. Any product purchased outside the United States (please contact your local dealer)  
4. Shipping charges to get the unit to Hafler  
5. Any product which has had the serial number defaced, altered, or removed  
Limit on Implied Warranties  
Any implied warranties including warranties of fitness for use and merchantability are limited in duration to the period  
of the express warranty set forth above. Some states do not allow limitations on the length of an implied warranty, so  
this limitation may not apply. No person is authorized to assume for Hafler any other liability in connection with the  
sale of the product.  
How to obtain service or technical support  
Please call 1-800-669-9899 for Rockford/Hafler support. You must obtain an RA # (return authorization number) to  
return any products to Hafler. You are responsible for shipment of product to Hafler.  
Rockford Corporation  
Hafler Division  
2055 E. 5th Street  
Tempe, Arizona 85281  
22 –  
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®
HAFLER  
A DIVISION OF  
ROCKFORD CORPORATION  
546 SOUTH ROCKFORD DRIVE  
TEMPE, ARIZONA 85281 U.S.A.  
1-888-HAFLER1 / 602-967-3565  
WWW.HAFLER.COM  
MADE IN THE USA  
This product is designed, developed and assembled in the USA by a dedicated  
group of American workers. The majority of the components used in the  
construction of this product are produced by American companies. However, due  
to the global nature of their manufacturing facilities and the electronics parts  
industry in general, some parts may be manufactured in other countries.  
LIT10440  
3/99 E.W.R.  
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