Infinity Speaker HPS 250 User Manual

HPS  
High-Performance Subwoofer  
Model HPS-250  
Owner’s Manual  
Part #333762-001  
®
Reference Standard (RS 4, RS 5) – Owner’s Manual  
1
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C A U T I O N  
RISK OF ELECTRIC SHOCK  
DO NOT OPEN  
WARNING: SHOCK HAZARD – DO NOT OPEN.  
AVIS: RISQUE DE CHOC ELECTRIQUE – NE PAS OUVRIR.  
CUIDADO: PELIGRO DE CHOQUE ELÉCTRICO – NO ABRIR.  
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK  
DO NOT REMOVE COVER (0R BACK)  
NO USER SERVICEABLE PARTS INSIDE  
REFER SERVICING TO QUALIFIED PERSONNEL  
THIS INFINITY PRODUCT IS DESIGNED FOR 120-VOLT USE ONLY! FOR  
DETAILED SAFETY PRECAUTIONS, PLEASE SEE FOLLOWING PAGE IN THIS  
OWNER S MANUAL FOR “IMPORTANT SAFETY INSTRUCTIONS.”  
The lightning flash with arrowhead symbol, within an equilateral triangle, is  
intended to alert the user to the presence of uninsulated “dangerous voltage” with-  
in the products enclosure that may be of sufficient magnitude to constitute a risk of  
electric shock to persons.  
The exclamation point within an equilateral triangle is intended to alert the user  
to the presence of important operating and maintenance (servicing) instructions in  
the literature accompanying the product.  
Léclair avec le symbole de la flèche, placé dans les limites dun triangel équilatéral est  
prévu pour avertir l’utilisateur de la présence de “tension dangereuse” non isolée dans  
l’enceinte du produit qui pourrait être d’une importance suffisante pour présenter un  
resque d’électrocution aux personnes.  
Le point d’exclamation dans un triangel équilateral est prévu pour avertir l’utilisateur  
de la présence d’instructions importantes pour les opérations et l’entretien (service)  
dans les manuels fournis avec l’appareli.  
ATTENTION: POUR EVITER LES CHOCS ELECTRIQUES, INTRODUIRE  
LA LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE  
CORRESPONDANTE DE LA PRISE ET POUSSER JUSQUAU FOND.  
Este destello luminoso con un símbolo de punta de flecha dentro de un triángulo equi-  
látero tiene el objectivo de alertar al usuario sobre la presencia de “voltaje peligroso” no  
aislado dentro de la caja del producto que puede ser de magnitud lo suficientemente  
grande para constituir un riesgo de choque eléctrico para las personas.  
Este punto de exclamación dentro de un triángulo equilátero tiene el objectivo de aler-  
tar al usuario sobre la existencia de instrucciones operativas y de mantenimiento  
(servicio) importantes en la literatura que acomaña el aparato.  
CUIDADO: PARA REDUCIR EL RIESGO DE CHOQUE ELÉCTRICO, NO  
RETIRE LA CUBIERTA (O RESPALDO). DENTRO NO HAY PIEZAS A LAS  
QUE EL USUARIO PUEDA DAR SERVICIO. REMITA EL SERVICIO AL  
PERSONAL DE SERVICIO CALIFICADO.  
HPS-250 – Owner’s Manual  
3
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IMPORTANT SAFETY INSTRUCTIONS  
1) Read Instructions – All the safety and operating  
instructions should be read before the product is oper-  
ated.  
12) Grounding or Polarization –  
Figure A.  
This product may be equipped  
with a polarized alternating-cur-  
rent-line plug (a plug having one  
blade wider than the other). This  
plug will fit into the power outlet  
only one way. This is a safety fea-  
ture. If you are unable to insert  
the plug fully into the outlet, try  
reversing the plug. If the plug  
should still fail to fit, contact your  
ANTENNA  
LEAD-IN  
WIRE  
2) Retain Instructions – The safety and operating  
instructions should be retained for future reference.  
GROUND  
CLAMP  
3) Heed Warnings – All warnings on the product and  
in the operating instructions should be adhered to.  
ANTENNA  
DISCHARGE UNIT  
(NEC SECTION 810-21)  
4) Follow Instructions – All operating and use instruc-  
tions should be followed.  
5) Cleaning – Unplug this product from the wall out-  
let before cleaning. Do not use liquid cleaners or  
aerosol cleaners. Use a damp cloth for cleaning.  
GROUNDING CONDUCTORS  
(NEC SECTION 810-21)  
ELECTRIC  
SERVICE  
EQUIPMENT  
electrician to replace your obso-  
lete outlet. Do not defeat the  
safety purpose of the polarized  
plug.  
GROUND CLAMPS  
Exception: A product that is meant for uninterrupted  
service and that for some specific reason, such as the  
possibility of the loss of an authorization code for a  
CATV Converter, is not intended to be unplugged by  
the user for cleaning or any other purpose, may exclude  
the reference to unplugging the product in the cleaning  
description otherwise required in number 5.  
POWER SERVICE GROUNDING  
ELECTRODE SYSTEM  
(NEC SECTION 810-21)  
13) Power-Cord Protection –  
Power-supply cords should be  
routed so that they are not likely  
to be walked on or pinched by items placed upon or  
against them, paying particular attention to cords at  
plugs, convenience receptacles, and the point where  
they exit from the product.  
20) Damage Requiring Service – Unplug this product  
from the wall outlet and refer servicing to qualified ser-  
vice personnel under the following conditions:  
a) When the power-supply cord or plug is damaged.  
b) If liquid has been spilled, or objects have fallen into  
the product.  
c) If the product has been exposed to rain or water.  
d) If the product does not operate normally by follow-  
ing the operating instructions. Adjust only those con-  
trols that are covered by the operating instructions as  
an improper adjustment of other controls may result in  
damage and will often require extensive work by a qual-  
ified technician to restore the product to its normal  
operation.  
6) Attachments – Do not use attachments not recom-  
mended by the product manufacturer as they may  
cause hazards.  
14) Outdoor Antenna Grounding – If an outside  
antenna or cable system is connected to the product, be  
sure the antenna or cable system is grounded so as to  
provide some protection against voltage surges and  
built-up static charges. Article 810 of the National  
Electrical Code, ANSI/NFPA 70, provides information  
with regard to proper grounding of the mast and sup-  
porting structure, grounding of the lead-in wire to an  
antenna discharge unit, size for grounding conductors,  
location of antenna-discharge unit, connection to  
grounding electrodes, and requirements for the  
grounding electrode. See Figure A.  
7) Water and Moisture – Do not use this product near  
water – for example, near a bathtub, washbowl, kitchen  
sink, or laundry tub; in  
a
wet basement;  
or near a swimming pool; and the like.  
8) Accessories – Do not place this product on an  
unstable cart, stand, tripod, bracket,  
or table. The product may fall,  
causing serious injury to a  
child or adult, and serious  
damage to the product. Use  
only with a cart, stand, tri-  
pod, bracket, or table recom-  
mended by the manufacturer,  
or sold with the product. Any  
mounting of the product should  
follow the manufacturer’s instructions, and should use  
a mounting accessory recommended by the manufac-  
turer.  
e) If the product has been dropped or damaged in any  
way.  
f) When the product exhibits a distinct change in per-  
formance – this indicates a need for service.  
15) Lightning – For added protection for this product  
during a lightning storm, or when it is left unattended  
and unused for long periods of time, unplug it from  
the wall outlet and disconnect the antenna or cable sys-  
tem. This will prevent damage to the product due to  
lightning and power-line surges.  
21) Replacement Parts – When replacement parts are  
required, be sure the service technician has used  
replacement parts specified by the manufacturer or that  
have the same characteristics as the original part.  
Unauthorized substitutions may result in fire, electric  
shock, or other hazards.  
16) Power Lines – An outside antenna system should  
not be located in the vicinity of overhead power lines  
or other electric light or power circuits, or where it can  
fall into such power lines or circuits. When installing  
an outside antenna system, extreme care should be  
taken to keep from touching such power lines or cir-  
cuits as contact with them might be fatal.  
9) A Product and Cart Combination Should Be  
Moved With Care – Quick stop, excessive force, and  
uneven surfaces may cause the product and cart com-  
bination to overturn.  
22) Safety Check – Upon completion of any service or  
repairs to this product, ask the service technician to  
perform safety checks to determine that the product is  
in proper operating condition.  
10) Ventilation – Slots and openings in the cabinet are  
provided for ventilation and to ensure reliable opera-  
tion of the product and to protect it from overheating,  
and these openings must not be blocked or covered.  
The openings should never be blocked by placing the  
product on a bed, sofa, rug, or other similar surface.  
This product should not be placed in a built-in instal-  
lation such as a bookcase or rack unless proper ventila-  
tion is provided or the manufacturer’s instructions have  
been adhered to.  
23) Wall or Ceiling Mounting – The product should  
be mounted to a wall or ceiling only as recommended  
by the manufacturer.  
17) Overloading – Do not overload wall outlets, exten-  
sion cords, or integral convenience receptacles as this  
can result in a risk of fire or electric shock.  
24) Heat – The product should be situated away from  
heat sources such as radiators, heat registers, stoves, or  
other products (including amplifiers) that produce  
heat.  
18) Object and Liquid Entry – Never push objects of  
any kind into this product through openings as they  
may touch dangerous voltage points or short out parts  
that could result in a fire or electric shock. Never spill  
liquid of any kind on the product.  
19) Servicing – Do not attempt to service this product  
yourself as opening or removing covers may expose you  
to dangerous voltage or other hazards. Refer all servic-  
ing to qualified service personnel.  
11) Power Sources – This product should be operated  
only from the type of power source indicated on the  
marking label. If you are not sure of the type of power  
supply to your home, consult your product dealer or  
local power company. For products intended to operate  
from battery power, or other sources, refer to the oper-  
ating instructions.  
4
HPS-250 – Owner’s Manual  
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INTRODUCTION  
Infinitys HPS-250 subwoofer has been designed to enhance the bass frequencies of any audio  
system. The subwoofer may be used with speakers of any size. Obviously, the greatest bass  
enhancement will be achieved when the subwoofer is connected to speakers that do not have the  
capability to create deep bass.  
ABOUT THIS PRODUCT...  
UNPACKING THE SUBWOOFER  
Check your subwoofer carefully. If it has been damaged in transit, report the damage immedi-  
ately by calling your dealer and/or the trucking firm that delivered it.  
To prevent fire or shock hazard, DO NOT EXPOSE THIS SUBWOOFER SYSTEM TO RAIN  
OR EXCESSIVE MOISTURE. To avoid electric shock, DO NOT OPEN THE SUBWOOFER!  
There are no user serviceable parts inside. Observe all warnings and cautions.  
IMPORTANT!  
VOLUME CONTROL...  
IMPORTANT!  
A FEW SUGGESTIONS  
We recommend that you not operate your speakers or subwoofer with the bass, treble and loud-  
ness controls set to full boost. This will place undue strain on your electronics and speakers and  
could damage them.  
The volume control setting on your preamplifier or stereo receiver is not a specific indication of  
the overall loudness level of the speakers. The only important consideration is the loudness level  
at which the system can be played regardless of where the volume control is set.  
Always turn down the volume control setting on your preamplifier or stereo when changing a  
cassette or CD, or switching inputs to AM or FM operation. Excessively loud transients (clicks or  
popping sounds) can damage the satellite speakers and possibly the subwoofer.  
Whenever changing cables, pulling plugs, etc., ALWAYS TURN OFF ALL EQUIPMENT, includ-  
ing the subwoofer. This prevents transients from entering the speakers and prevents electrical  
energy from reaching you. Keep all connections out of the reach of children.  
HPS-250 – Owner’s Manual  
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POSITIONING  
Since the installation of a subwoofer is somewhat more complicated than installing full-range  
speakers, it is essential you read this section very carefully prior to connecting the subwoofer to  
your system. Should you have questions relating to your installation, it is advisable to call either  
your dealer or Infinitys Customer Service Department for advice.  
POSITION WITHIN  
A ROOM WILL  
STRONGLY INFLUENCE  
PERFORMANCE...  
The performance of the subwoofer is directly related to its placement in the listening room and  
how you align the subwoofer with its satellite speakers. Setting the volume of the subwoofer in  
relationship to the left and right speakers is also of critical importance because it is essential that  
the subwoofer integrates smoothly with the entire system. Setting the subwoofers volume level  
too high will result in an overpowering, boomy bass. Setting the volume level too low will negate  
the effect of the subwoofer.  
We recommend placing the HPS-250 subwoofer at least 2 to 3 feet away from a television or a  
computers disc-drive system to prevent smearing the colors of the TV picture or erasing of the  
magnetic drive.  
Here are several additional facts on installation that may prove useful. It is generally believed by  
most audio authorities that low frequencies (below 125Hz) are nondirectional and, therefore,  
placement of a subwoofer within any listening room is not critical. While in theory it is true that  
the larger wavelengths of extremely low frequencies are basically non-directional, the fact is that  
when installing a subwoofer within the limited confines of a room, reflections, standing waves  
and absorptions generated within the room will strongly influence the performance of any sub-  
woofer system. As a result, specific location of the subwoofer becomes important, and we strongly  
recommend that you experiment with placement before choosing a final location.  
Placement will depend upon your room and the amount and quality of bass required (for exam-  
ple, whether or not your room permits placement of the subwoofer near either satellite). The  
HPS-250 utilizes a downfiring woofer with a hyperflared port at the rear of the enclosure. Be sure  
to leave a minimum of six inches between the wall and the port.  
6
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POSITIONING (Continued)  
HPS SUB  
RIGHT-  
CHANNEL  
SPEAKER  
Figure 1. This view shows the  
subwoofer positioned behind the  
right-channel satellite speaker to  
re-create the actual location of  
bass instruments in an orchestra  
and/or add impact to movie sound tracks.  
PRIMARY  
LISTENING  
AREA  
Here are some useful hints:  
1. Experimentation with the position of your subwoofer may be useful.  
2. If bass response seems inadequate, move it closer to a wall or corner.  
It will take time and patience to find the most pleasing acoustic location for your subwoofer.  
Testing for sonic balance and blending should always be made for your normal listening position,  
using a wide range of source material. As a starting point, initially place the subwoofer behind  
your right-channel satellite speaker, six inches from the wall. We suggest trying this location first  
because, in an orchestra, the bass instruments are usually located in the back and to the right  
(see Figure 1). This position will also will also allow for emphatic, deep bass while playing  
movies.  
HPS-250 – Owner’s Manual  
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IDENTIFICATION OF FRONT PANEL CONTROL  
(Refer to Figure 2.)  
CONTROLS...  
1. Crossover: Controls the upper roll-off point.  
2. Phase: Reverse/normal switch changes audio-signal polarity.  
3. Gain: Controls subwoofer volume level.  
Figure 2.  
150  
50  
10  
0
0
CROSSOVER  
GAIN  
PHASE  
8
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CONNECTING YOUR SUBWOOFER  
If your receiver/processor does not have subwoofer outputs for the left and right channels:  
HPS-250 – Owner’s Manual  
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CONNECTING YOUR SUBWOOFER (Continued)  
If your receiver/processor has subwoofer outputs for the left and right channels:  
NOTE: Some receivers have a single  
(mono) subwoofer output. In that case, it is  
recommended that you use a “Y” connector  
(not included) to maximize performance.  
10 HPS-250 – Owner’s Manual  
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OPERATION  
SET CONTROLS...  
1. Initially set the HPSs Gain control to the “O” position.  
2. Initially set the HPSs Crossover control to the 100Hz position.  
POWER  
ON…  
3. Plug your HPSs AC cord into a wall outlet. Do not use the outlets on the back of the  
receiver.  
4. Turn on your HPS sub by pressing the power button on the center of the front panel.  
5. Turn on your entire audio system and start a CD or movie sound track at a moderate level.  
6. Turn your HPSs Gain control  
(Figure 2) up to the “5” position (half way). If no sound  
ADJUST GAIN…  
emanates from the subwoofer, check the AC-line cord and input cables. Are the connectors  
on the cables making proper contact? Is the AC plug connected to a “live” receptacle? Has the  
power button been pressed to the “on” position? (Note: A green indicator on the front panel  
will light when the power is on.) Once you have confirmed that the subwoofer is active, pro-  
ceed by playing a CD, record or cassette. Use a selection that has ample bass information.  
7. Set the overall volume control of the preamplifier or stereo to a comfortable level. Adjust the  
subwoofers Gain control  
(Figure 2) until you obtain a pleasing blend of bass. Bass response  
should not overpower the room but rather be adjusted so there is a harmonious blend across  
the entire musical range. Many users have a tendency to set the subwoofer volume too loud,  
adhering to the belief that a subwoofer is there to produce lots of bass. This is not entirely true.  
A subwoofer is there to enhance bass, extending the response of the entire system so the bass  
can be felt as well as heard. However, overall balance must be maintained or the music will not  
sound natural. An experienced listener will set the volume of the subwoofer so its impact on  
bass response is always there but never obtrusive.  
CROSSOVER ADJUSTMENTS…  
PHASE CONTROL...  
8. Crossover Control  
(Figure 2) – The Low-Pass control determines the highest frequency at  
which the subwoofer reproduces sounds. If your main speakers can comfortably reproduce  
some low-frequency sounds, set this control to a lower frequency setting, between 50Hz –  
100Hz. This will concentrate the subwoofers efforts on the ultradeep bass sounds required  
by todays films and music. If you are using smaller bookshelf speakers that do not extend to  
the lower bass frequencies, set the low-pass crossover control to a higher setting, between  
120Hz – 150Hz.  
9. The Phase Control  
(Figure 2) determines whether the subwoofer speakers piston-like  
action moves in and out with the main speakers, 0˚, or opposite the main speakers, 180˚.  
There is no correct or incorrect setting. Proper phase adjustment depends on several variables  
such as room size, subwoofer placement and listener position. Adjust the phase switch to  
maximize bass output at the listening position. Remember, every system, room and listener  
is different. There are no right or wrong settings; any setting you choose will result in excel-  
lent performance. Should you decide to fine-tune your system for optimum performance, be  
patient and trust your ears. It will be worth the effort involved to fully “tweak” your system.  
HPS-250 – Owner’s Manual 11  
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A WORD OF ADVICE  
The low-frequency Rolloff and Volume controls may be set anywhere within their rotation.  
However, it will be a most unusual circumstance if you have to set the Volume control completely  
clockwise. This may indicate an unbalanced condition in your system (too much bass), that the  
system is in an especially large room, or that speaker placement may be incorrect. Try several  
other locations before concluding that the Volume control must be set at maximum.  
OVERDRIVE PROTECTION  
Automatic limiting circuitry helps prevent overdriving a connected subwoofer by softly clipping  
the input signal if it exceeds a predetermined threshold. Depending on the level, you may or  
may not hear slight distortion on musical peaks. This protection is completely automatic, with  
no user adjustments. However, if you do hear distortion continuously while playing music,  
the input signal level (feeding the HPS) may be too high and should be lowered. If this doesn’t  
solve the problem, check the connections and that the other components in the audio chain are  
operating properly.  
A WORD ABOUT TONE CONTROLS  
The tone controls on your electronic components (preamplifier, receiver, etc.) should be used  
with the utmost discretion. Excessive boost can create severe power demands on your power  
amplifier. Maximum bass boost can create a demand for literally hundreds of watts in the bass  
region, whereas in the “flat” position, or with the tone controls switched out of the system, your  
average listening level may be impressively and realistically loud at fewer than 10 watts. The  
remaining power capacity required is on reserve for power peaks on sharp transients and  
powerful crescendos.  
12 HPS-250 – Owner’s Manual  
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CARE OF YOUR SUBWOOFER  
Your Infinity subwoofer cabinet is finished with a heavy-duty, high-quality vinyl that requires  
very little maintenance. Keep the cabinet clean by dusting it occasionally with a damp cloth.  
FEEDBACK  
If the bass seems boomy, or you notice a rumbling sound when listening to record albums, the  
cause may be acoustic feedback. This means that low-frequency vibrations from your speakers  
are reaching the turntable. To help isolate the turntable from these vibrations, place the turntable  
on a heavy, solid support, as far away as possible from the subwoofer. If you continue to experi-  
ence difficulties after experimenting with placement, consult your Infinity dealer.  
IMPORTANT!  
CD players are also susceptible to vibrations and should be placed on solid supports to isolate  
them acoustically. Another way to isolate the CD player is to place it on four isolation feet  
available at your local dealer.  
IN CASE OF TROUBLE WITH  
YOUR SUBWOOFER  
If the subwoofer sound is distorted, stops playing or otherwise seems to be malfunctioning, first  
determine if the problem is in the subwoofer or the wiring and/or other audio components. If  
the problem also affects the satellite speakers, the cause is most likely in your electronics. If it is  
only noticed in the subwoofer, make sure that all connecting cables are correct and in proper  
working condition. Make sure the subwoofer is plugged in and turned on.  
IMPORTANT!  
IMPORTANT!  
If everything seems to be in good working order and the subwoofer still malfunctions,  
DO NOT ATTEMPT ANY REPAIRS! Contact your Infinity dealer and get the name of the  
authorized Infinity service center near you. If there is no facility near you, contact Infinitys  
Customer Service Department at (800) 553-3332, or write:  
Infinity Systems, Inc. – CUSTOMER SERVICE  
250 Crossways Park Drive, Woodbury, NY 11797 USA  
Do not ship your subwoofer for service without prior approval (RETURN AUTHORIZATION),  
and do not ship without enclosing a copy of your original bill of sale.  
HPS-250 – Owner’s Manual 13  
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HPS-250  
SPECIFICATIONS  
PERFORMANCE DATA  
Frequency Response:  
Amplifier Power:  
28 ~ 120Hz  
250W  
DRIVE UNIT  
FINISH  
12" Downfiring woofer  
Dark-bronze laminate  
Height, Width, Depth:  
DIMENSIONS  
16 x 15 x 18" (406 x 381 x 457mm)  
14 HPS-250 – Owner’s Manual  
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Notes  
High-Performance Subwoofer (HPS) – Owner’s Manual 15  
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Infinity constantly strives to update and improve existing products, as well as create new ones.  
Therefore, the specifications and construction details in this and related Infinity publications are  
subject to change without notice.  
© 1998 Infinity Systems, Inc., 250 Crossways Park Drive, Woodbury, NY 11797 USA  
(516) 496-3400 • FAX (516) 682-3523  
Infinity is a registered trademark of Infinity Systems, Inc.  
Part No. 333762-001  
16 Reference Standard (RS-8) – Owner’s Manual  
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