i
HFi100.2 / HFi55.4 / HFi100.4
HFi1000D / HFi1500D
HFi2000D / HFi2500D
GENERAL INSTALLATION PROCEDURE
System Design
The success of any car stereo system relies on several factors, such as the system design, execution of the installation, and system setup. Please
remember that any system is only as good as its weakest link.
Please remember that higher power systems are not necessarily useful purely for high sound pressure levels, but also to establish a headroom capability, to
reproduce musical peaks cleanly without distortion. Lower power amplifiers will clip earlier than their more powerful cousins, and cause loudspeaker failure when
overdriven, due to the harmonics generated by a clipped signal, thus overheating voice coils.
Amplifiers should be mounted with the fins running horizontally for best convection cooling, to minimize overheating. Purchase the best quality RCA cables you can
afford, for reliability and less engine noise interference in the audio system.
Installation
WOOD
It is highly recommended that the amplifier be mounted to a board of MDF or other solid
HF
structure using the 4 mounting screws provided. Avoid mounting the
amplifier to metal as this can introduce noise and other unwanted issues. When mounting
the amplifier, ensure that it is mounted HORIZONTALLY, as shown in the diagram above, for
optimal heat dissipation. Mounting amplifiers to speaker enclosures is not recommended as
this can cause damage to the amplifier components. When choosing a location for
mounting the amplifier, ensure that you check for clearance from wires, gas tank, electrical
devices and brake lines etc.
General:
Run the wiring so that RCA cables are at least 18“ away from power and speaker cables. Keep RCA cables away from electrical devices in the vehicle that can cause
electrical noise, such as electric fuel pumps, emission control modules and other on-board electronic modules.
Power and ground connections(see the features matrix on page 7 for proper gauge cables per amplifier):
Use a sufficient gauge power cable and ground cable using the chart below as reference to what size wire you require. HFi series amplifiers require at least 4 gauge
power wire. In a multi amplifier system, add the total value of the manufacture recommended fusing to get your total system amperage. Some applications may
require multiple runs of power wire to meet the system requirements. In multi amplifier systems it is advisable to mount a large enough fuse right at the battery, and
run one or multiple +12 volt power cables to a fused distribution block near the amplifiers. It is then a simple matter to connect the +12 volt terminal of each amplifier
to the distribution block. During this process, please ensure that the main power fuse is removed to avoid shorting the electrical system. The main fuse must be within
12” of the vehicles battery.
Ground each amplifier with as short a ground lead as possible directly to the vehicle chassis using at least 4 gauge wire or equivalent to the size of the amplifiers’
power wire. Use a ground distribution block, if you wish, but it is extremely important to keep the main ground lead from this distribution block to the chassis as short
as possible , not more than 12“. The ground connection integrity to the chassis is very important, and the best way to achieve a good, solid electrical and mechanical
contact is to use a large round crimp lug, crimped and soldered to the ground cable. The next step is to scrape the paint off the vehicle chassis , slightly larger than
the ground lug, at the connection point. Drill a clearance hole in the chassis, the same size as the lug hole, and use a bolt, spring washer and nut to securely fasten
the ground lug. Use petroleum jelly to coat the bolt/lug connection, to prevent oxidization with time.
TIP: Use the same approach when installing head units, equalizers or any audio equipment for that matter - run short individual grounds from each piece directly to
the vehicle chassis, to minimize ground loops and system noise. All power, ground and speaker connections should be crimped and soldered for reliability. Make sure
that none of the cable insulation can chafe against exposed metal in the vehicle, causing short circuits to the chassis.
WIRE LENGTH
SYSTEM
AMPERAGE
7-10 ft.
10-13 ft.
13-16 ft.
16-19 ft.
19-22 ft.
22-28 ft.
NOTE: This Matrix is a general rule
of thumb. Please refer to the
manufacturers specific
requirements. HFi specifications
can be found on page 7.
35-50
8
6
4
4
4
2
6
4
4
2
2
0
4
4
2
2
0
0
4
4
2
2
0
0
4
4
2
2
0
0
4
2
0
0
0
0
50-65
68-85
85-105
105-125
125-150
Safe connection sequence:
After all cables are run, connect speaker wires to the speakers and amplifiers, then run and plug in RCA cables. Next, connect all power, ground, and remote turn on
leads. Now connect all +12 volt cables to the amplifier/s and distribution blocks and fuse holders. Finally, connect the main +12 volt cable to the battery, with the main
fuse removed, and we are almost ready to power up the system.
Power up the system:
The following procedure may seem like overkill, but there is nothing more frustrating when turning on a system for the first time, and it does not work properly
immediately.
First, make sure the head unit is off, and turn all level controls to minimum (counterclockwise), including the head unit volume control. Set all equalizers to 0 dB (no
boost), and all crossover frequency controls at approximate frequencies, as recommended by the loudspeaker manufacturer. Set all input selector and crossover
switches as required for the application. Remove all amplifier fuses, and insert the main fuse at the battery. If the fuse does not blow, you can insert the fuse in one of
the amplifiers, and we are ready to turn on the system. Turn the head unit on, insert a CD, or select a radio station, and increase the head unit volume control. If the
system sounds fine, turn off the head unit, and install fuses in the remaining amplifiers, one by one, till the complete system is powered up and functioning properly.
1
AMPLIFIER FEATURE DESCRIPTIONS
HFi AMPLIFIERS:
! Each model is capable of 4 & 2-Ohms stereo per channel, or 4-Ohms mono bridged operation
except the mono amps which are capable of 4, 2 and 1-Ohm loads.
! Tri-Mode operation with any stereo pair of amplifier channels is possible, as with all bridgeable
amplifiers.
! The input sensitivities for rated output powers are variable from 0.2 volts to 6 volts.
! All crossovers are fully variable in their respective ranges.
! Crossover filters are 12dB/Octave.
! All Hifonics amplifiers feature a comprehensive diagnostic system, with speaker lead short circuit,
and amplifier DC faults indicated by the red “PROTECT” LED.
! CAUTION: DO NOT OPERATE ANY AMPLIFIER BELOW THE INTENDED IMPEDANCE. YOU
WILL CAUSE DAMAGE TO THE AMPLIFIER THAT WILL NOT BE COVERED UNDER THE
WARRANTY PRINTED IN THE BACK OF THE MANUAL. 2 & 4 Channel amps are capable of 4
and 2-Ohms wired stereo and 4-Ohms wired mono bridged. The mono amps are capable of 4, 2
and 1-Ohm.
! A POWER LED indicates the powered up and turned on condition.
HFi100.2 2-CHANNEL AMPLIFIERS
TheX-OVERslide switch selects theinternal crossover functions:
-The input signal is routed directly to the LINE OUT RCA jacks, regardless of the X-OVER setting
simplifying daisy chaining ofamplifiers.
OUTPUT INPUT
POWER
PROTECT
-HPF:Selects thebuilt in HIGHPASSfilter, variable from 60Hzto12kHz.
-FULL:Bypasses all crossovers forfull frequency rangeoperation.
-LPF:Selects thebuilt in LOW PASS, variable from 30Hzto250Hz.
MODE: The mode switch allows you to choose Stereo for full range 2 channel operation or MONO
forbridging operation
LEVEL BASS EQ X-OVER
HPF
LPF
MODE
L
L
6V 0.2V
0dB 12dB
FULL LPF HPF 60Hz 12KHz
30Hz 250Hz
MONO STEREO
R
R
HIGH INPUT: If your radio/CD player does not have unbalanced (RCA) outputs, you can use the
HIGHlevel (wire)inputs.
LINEINPUT:Theline inputaccepts unbalanced (RCA)inputs from 0.2Vto6V.
LINE OUTPUT: The line output passes through signal from the line inputs which allows you to daisy
chain multiple amplifiers from onesignal.
NotethattheLOW PASSsignalisMONO.
-In the LPF position, the HIGH PASS filter acts as a subsonic
filter.
-When the LPF mode is selected, a 0 to +12dB, at 45Hz, BASS
-EQisalsoswitched in.
The 4 channel amps have the same features as the 2 channel models accept that there are 2 sets of
controls.
1set forchannels 1&2and1set forchannels 3&4.
HFi55.4 / HFi100.4 4-CHANNEL AMPLIFIERS
In addition, the 4 channel models have a Mode switch which allows you to select 2, 3 or 4 channel
operation. Switchto2channel if you only have 1set ofRCA’sin CH1/2andtheunit will automatically
supply signal tochannels 3/4. Select 3channel whenyou only have RCA’sin CH1/2butplan torun
channels 3/4bridged. Select 4channel if you areproviding RCA’stochannels 1/2and3/4.
TheX-OVERslide switch selects theinternal crossover functions:
-The input signal is routed directly to the LINE OUT RCA jacks, regardless of the X-OVER setting
simplifying daisy chaining ofamplifiers.
LEVEL BASS EQ X-OVER
HPF
LPF
POWER
CH3/4
CH1/2
LINE OUT
PROTECT
6V 0.2V
0dB 12dB
FULL LPF HPF 60Hz 12KHz
30Hz 250Hz
R
L
R
LEVEL BASS EQ X-OVER
HPF
LPF
MODE
L
6V 0.2V
0dB 12dB
FULL LPF HPF 60Hz 12KHz
30Hz 250Hz
2
3
4
-HPF:Selects thebuilt in HIGHPASSfilter, variable from 60Hzto12kHz.
-FULL:Bypasses all crossovers forfull frequency rangeoperation.
-LPF:Selects thebuilt in LOW PASS, variable from 30Hzto250Hz.
MODE: The mode switch allows you to choose Stereo for full range 2 channel operation or MONO
forbridging operation
HIGH INPUT: If your radio/CD player does not have unbalanced (RCA) outputs, you can use the
HIGHlevel (wire)inputs.
LINEINPUT:Theline inputaccepts unbalanced (RCA)inputs from 0.2Vto6V.
LINE OUTPUT: The line output passes through signal from the line inputs which allows you to daisy
chain multiple amplifiers from onesignal.
NotethattheLOW PASSsignalisMONO.
-In the LPF position, the HIGH PASS filter acts as a subsonic
filter.
-When the LPF mode is selected, a 0 to +12dB, at 45Hz, BASS
-EQisalsoswitched in.
-The LINE INPUT signal is routed directly to the LINE OUT RCA jacks, regardless of the X-OVER
setting simplifying daisy chaining ofamplifiers.
HFi1000D / HFi1500D / HFi2000D / HFi2500D MONO BLOCK AMPLIFIERS
-SUBSONIC:Allows you toadjust thecrossover filter from 15Hzto35Hz.
-LPF:Allows yo toadjust theLOW PASScrossover filter from 30Hzto250Hz.
LEVEL: Adjusts theinputsensitivity from 0.2volts to6volts.
BASSEQ:TheBass EQis adjustable from 0dbto10dB.
REMOTE:This is theinput jack fortheremote Level control.
OUTPUT INPUT
LEVEL BASS EQ REMOTE SUBSONIC LOW PASS
POWER
L
L
PROTECT
6V 0.2V
0dB 10dB
15Hz 35Hz
30Hz 250Hz
R
R
LINEINPUT:Theline input accepts unbalanced (RCA)inputs from 0.2Vto6V.
LINE OUTPUT: The line output passes through signal from the line inputs which allows you to daisy
chain multiple amplifiers from onesignal.
The monoampsarecapableof4, 2&1-Ohm loads.
Operating the amp below 1-Ohm can cause damage to the
amp notcoveredin thewarranty.
2
HFi100.2 2 CHANNEL AMPLIFIER APPLICATIONS
FULL RANGE STEREO
This is themost basic application fortheHFiSeries 2channel amplifiers.
4. MODE:
Shouldbein theSTEREOposition.
5. LineLevel:
1. Interconnectcablechecklist:
ConnecttheLINEINPUTStotheRadio/CD withgoodquality RCAcables.
2. CrossoverSwitch:
Refertothesection “Settingupsystems afterinstallation forbest performance”
TheX-OVERswitch must bein theFULLposition.
3. Crossoverfrequencycontrolchecklist:
N/Aforfull rangeoperation.
NOTE:Minimum finalloudspeakerimpedances:
4&2Ohms stereomodeor4-Ohms monomode
Thisamplifierwill notdo1Ohm stereoor2/1Ohm monooperation.
FULL RANGE
SPEAKERS
FULL RANGE
STEREO LINE INPUT
HF
TO BATTERY +12v
VIA FUSE
REMOTE TURN-ON
CHASSIS GROUND
MONO
This application illustrates the basic mono bridging method for all Hifonics
amplifiers.
Switchsettingchecklist:
-TheAMPLIFIERX-OVERswitch should bein theLPFposition andtheMODE
should bein theMONO position.
Interconnectcablechecklist:
A MONO signal source is required, such as would be available from the mono
sub bass output of an active crossover, whether stand alone, or built into a head
unit or equalizer. Important: Do not be tempted to connect the hot, or positive
outputs, from any source together to obtain a mono signal, as this could very
well damage theoutputstage ofthatsource.
Crossoverfrequencycontrolsettingchecklist:
LPF:11o’clock
Minimum finalloudspeakerimpedance:
-4ohmmono.
It is necessary to feed the SAME signal to both left and right inputs via a Y-
adapter RCAcable. Connect the mono speaker positive terminal to the LEFT +,
andits negative terminal toRIGHT-.
FULL RANGE
MONO SPEAKER
FULL RANGE
MONO LINE INPUT
VIA Y-ADAPTER
FROM MONO SOURCE
HF
TO BATTERY +12v
VIA FUSE
REMOTE TURN-ON
CHASSIS GROUND
3
HFi55.4 / HFi100.4 4-CHANNEL AMPLIFIER APPLICATIONS
4 CHANNEL FULL RANGE SYSTEM
Here we show how to use the 4 channel amplifiers as straightforward discrete 4
channel full rangeunits.
-HIPASS:N/A
-LOW PASS:N/A
Interconnectcablechecklist:
-Connectthefourinputs oftheamplifier toaRadio/CDwithquality RCAcables.
Channels3/4:
-HIPASS:N/A
-LOW PASS:N/A
Switchsettingchecklist:
-1/2CHX-OVER: FULL
-3/4CHX-OVER: FULL
Levelcontrolchecklist:
-Refertothesection “Settingupsystems afterinstallation forbest performance”
Crossoverfrequencycontrolchecklist:
Channels1/2:
Minimum finalloudspeakerimpedances:
-2ohmperchannel.
HF
2 or 3 CHANNEL SYSTEM
Here we show how to use the 4 channel amplifiers as a 3 channel unit by taking
advantage ofthemono bridging capability ofall Hifonics amplifiers.
Switchsettingchecklist:
-1/2CHX-OVER: FULL
-3/4CHX-OVER: LPF
The following example shows how to create a 3 channel system by mono
bridging channel pair 3 / 4. In order to create a 2 channel system, simply follow
theexample toalso mono bridge channel pair 1/2.
Crossoverfrequencycontrolchecklist:
Channels1/2:
-HIPASS:N/A
Interconnectcablechecklist:
- Connect the inputs of channel pair 1/2 to a suitable stereo source, e.g. a head
unit withgoodquality RCAcables.
-AMONO signal source is required to bridge channel pair 3/4, such as would be
available from the mono sub bass output of an active crossover, whether
standalone, or built into a head unit or equalizer. If you only have 1 set of RCA
outputs from your headunit, you can simply connect those to the inputs for ch
1/2 and switch the MODE to 3ch. The amplifier will auto sum the signal and
provide mono outputfor bridged channels 3/4.
-LOW PASS:N/A
Channels3/4:
-HIPASS:N/A
-LPF:11o’clock
TIP: If you are using the mono sub bass output of an active crossover, there is
nothing wrong with switching in the low pass filter in these amplifiers for a
steeper low pass rolloff.
Important: Do not be tempted to connect the hot, or positive outputs, from any
source together to obtain a mono signal, as this could very well damage the
outputstage ofthatsource.
- It is necessary to feed the SAME signal to both left and right inputs via a Y-
adapter RCAcable.
- Connect the mono speaker positive terminal to the RIGHT +, and its negative
terminal toLEFT-as shown.
Levelcontrolchecklist:
-Refertothesection “Settingupsystems afterinstallation forbest performance”
Minimum finalloudspeakerimpedances:
-2ohmperchannelinstereomode.
-4ohmmonobridged.
MONO LINE INPUT
(Unless using procedure
listed above for 3ch)
STEREO LINE INPUT
HF
4
HFi55.4 / HFi100.4 4-CHANNEL AMPLIFIER APPLICATIONS
Front/Rear high pass, using a 2 channel amplifier for mono sub bass
The combination of a 2 and a 4 channel amplifier, utilizing their built in
crossovers, makes it a snap to put together a full system with front and rear
highs, withmono sub bass.
Channels1/2:
-HIPASS:100Hz
LOW PASS:N/A
Interconnectcablechecklist:
- Using good quality RCAcables, feed the front and rear outputs of a head unit to
theinputs ofthe4channel amplifier as shown.
Channels3/4:
-HIPASS:100Hz
-LOW PASS:N/A
-Also connect the LINE OUT of the 4 channel amplifier to the LINE INPUT of the
2channel amplifier as shown.
2channelbassamplifier:
-HIPASS(Subsonicfilter):10Hzto40Hz
-LOW PASS:80Hz
Mono basswooferwiring:
Connect the mono speaker positive terminal to the LEFT +, and its negative
terminal toRIGHT-.
Please note that these frequency points are suggestions only. Refer to the
loudspeaker manufacturer specifications and the section “Setting up systems
afterinstallation forbest performance”
Switchsettingchecklist:
4channelhighsamplifier:
-1/2CHX-OVER: HPF
-3/4CHX-OVER: HPF
Levelcontrolchecklist:
- Refertothesection “Settingupsystems afterinstallation forbest performance”
2channelbassamplifier:
-X-OVERswitch: LPF
Minimum finalloudspeakerimpedances:
-2ohmperchannelinstereomode.
-4ohmmonobridged.
Crossoverfrequencycontrolchecklist:
-4channelhighsamplifier:
HF
STEREO
INTERCONNECT
RCA CABLE
SUBWOOFER
HF
TO BATTERY +12v
VIA FUSE
REMOTE TURN-ON
CHASSIS GROUND
5
HFi1000D / HFi1500D / HFi2000D / HFi2500D MONO AMPLIFIER APPLICATION
Basic application
These sub bass amplifiers can be used in any of the bi-amplification systems described in
this manual, replacing the2channel amplifiers as pertheillustrations.
Crossoverfrequencycontrolchecklist:
LOW PASS:35Hzto250Hz
SUBSONIC:15Hzto 35Hz
BASSEQ:0to+10dB
Interconnectcablechecklist:
Connect the inputs to a suitable source, e.g. a head unit with good quality RCA cables.
ConnecttheLINEOUTtotheinputs ofthesystem highs amplifier.
Levelcontrolchecklist:
Refertothesection “Settingupsystems after installation forbest performance”
Use at least #12 gauge speaker wiring. The amps have dual speaker terminals,
simplifying thehookup ofmultiple speakers.These amps aremono, 1channel, amplifiers
which have multiple positive and negative connections for ease of wiring. The 2 positives
arethesame internally andthe2negatives arethesame internally.
Minimum final loudspeakerimpedance:1-Ohm.
HFi1000D & HFi1500D
MONO
SUBWOOFER
DESIGNATED
MONO OUTPUT
FROM HEAD UNIT
BOOST
HF
HFR -3
MIN MAXX
TO BATTERY + 12 Volts
VIA FUSE
REMOTE TURN-ON
CHASSIS GROUND
HFi2000D & HFi2500D
MONO
SUBWOOFER
DESIGNATED
MONO OUTPUT
FROM HEAD UNIT
BOOST
HF
REMOTE TURN-ON
HFR -3
MIN MAXX
CHASSIS GROUND
TO BATTERY + 12 Volts
VIA FUSE
PARALLEL MONO
SUBWOOFERS
2-OHMS EACH MINIMUM
FULL RANGE
STEREO LINE INPUT
Y-ADAPTOR
NOT USED
Note: You can use the Radio/CD designated mono line output or a full range stereo line output.
For full range stereo line output, you will need an optional “Y-Adaptor” as shown.
6
7
SETTING UP SYSTEMS AFTER INSTALLATION FOR BEST PERFORMANCE
HFi100.2 / HFi55.4 / HFi100.4
General:
At this point you are ready to get more specific on the settings for your amplifier.
High Pass:
-When in Hi Pass operation, this setting acts as a low frequency cut off for your system reproduction. The point that you set it at cuts off any frequencies from reproduction beyond this
point. The 12 o’clock position is a great starting point. EXAMPLE: If you adjust the High Pass to 100Hz, the amplifier will not play frequencies below 100Hz but will play frequencies from
100Hz to the highest frequency the amplifier is capable of reproducing.
-When in Low Pass/Bandpass operation, this setting acts as a low frequency cut off for your system reproduction aka Subsonic Filter. The point that you set it at cuts off any frequencies
from reproduction beyond this point. The 12 o’clock position is a great starting point. EXAMPLE: If you adjust the High Pass to 60Hz, the amplifier will not play frequencies below 60Hz
but will play frequencies from 60Hz to the chosen Low Pass frequency.
-When in Flat/Full operation, the Low Pass crossover is bypassed.
Bass EQ:
This setting is a fixed bass boost at 45Hz that is variable from 0-12dB. This feature provides impact to your bass, but if not adjusted correctly, it can be over used and cause damage to
your speakers and amplifiers. It is best to slowly turn this setting clockwise until the desired punch is felt. It is not recommended to exceed the 12 o’clock position unless listening at a low
volume or a low recording quality as this can result in high distortion and possibly clipping.
Low Pass:
The Low Pass control acts as a ceiling and doesn’t allow frequencies to the right of the desired setting to be reproduced. Turning the potentiometer all the way to the right is a great
starting point. EXAMPLE: If you adjust the Low Pass to 120Hz, the amplifier will not play frequencies above 120Hz but will play frequencies from 120Hz to the chosen Hi Pass or
Subsonic frequency.
-When in Hi Pass operation, this setting is bypassed.
Level Control Setup:
Ensure that the Level is turned completely to the left prior to turning the system on. Next you should insert a CD or cassette that you are familiar with to use as a reference, and turn the
head unit volume control to about 80% of its full setting. The system sound level will of course be very low, and the following procedures will help you to match the amplifier input
sensitivities properly to the head unit output signal level.
It is important to match the amplifier LEVEL input sensitivity to the Radio/CD output sensitivity. This can be located in the Radio/CD manual.
If the Radio/CD output sensitivity is 2 volts, then adjust the amplifier LEVEL input to 2 volts.
If you are not sure what the Radio output sensitivity is, follow these general guide lines:
Turn the level control up slowly, till you hear distortion, then back off a few degrees on the control. If at any point your amplifier goes into protection, you will need to turn the Level to the
left a bit and then try again. If you reach a point where the output does not increase, stop turning the Level control to the right as the amplifier/speaker combo has reached its maxx
output in this application.
2or3 way activesystems(all):
Always start withthebass, or low frequency amplifier as areference, by turning its control uptothepoint wheredistortion is audible, andback it offsome.
Nowadjust thelevel control for thehighs or tweeterchannels in a2wayactive system, tobalance thehighs tolows.
In a 3 way active system, match the midrange level to the bass, and then the highs to the midrange and bass. It may be necessary to perform a few iterations of the midrange and highs level
control settings toachieve asatisfactory sound balance.
HFi1000D / HFi1500D / HFI2000D / HFi2500D
General:
At this point you are ready to get more specific on the settings for your amplifier.
Subsonic:
This setting acts as a low frequency cut off for your system bass reproduction. The point that you set it at cuts off any frequencies from reproduction beyond this point. The 12 o’clock
position is a great starting point. EXAMPLE: If you adjust the Subsonic to 25Hz, the amplifier will not play frequencies below 25Hz but will play frequencies from 25Hz to the chosen Low
Pass frequency.
Bass EQ:
This setting is a fixed bass boost at 45Hz that is variable from 0-10dB. This feature provides impact to your bass, but if not adjusted correctly, it can be over used and cause damage to
your subwoofers and amplifiers. It is best to slowly turn this setting clockwise until the desired punch is felt. It is not recommended to exceed the 12 o’clock position unless listening at a
low volume or a low recording quality as this can result in high distortion and possibly clipping.
Low Pass:
The Low Pass control acts as a ceiling and doesn’t allow frequencies to the right of the desired setting to be reproduced. The 12 o’clock position is a great starting point. EXAMPLE: If you
adjust the Low Pass to 80Hz, the amplifier will not play frequencies above 80Hz but will play frequencies from 80Hz to the chosen Subsonic frequency.
Level Control Setup:
Ensure that the Level is turned completely to the left prior to turning the system on. Next you should insert a CD or cassette that you are familiar with to use as a reference, and turn the
head unit volume control to about 80% of its full setting. The system sound level will of course be very low, and the following procedures will help you to match the amplifier input
sensitivities properly to the head unit output signal level.
It is important to match the amplifier LEVEL input sensitivity to the Radio/CD output sensitivity. This can be located in the Radio/CD manual.
If the Radio/CD output sensitivity is 2 volts, then adjust the amplifier LEVEL input to 2 volts.
If you are not sure what the Radio output sensitivity is, follow these general guide lines:
Turn the level control up slowly, till you hear distortion, then back off a few degrees on the control. If at any point your amplifier goes into protection, you will need to turn the Level to the
left a bit and then try again. If you reach a point where the output does not increase, stop turning the Level control to the right as the amplifier/subwoofer combo has reached its maxx
output in this application.
Sit back and enjoy the music!
8
TROUBLESHOOTING A SYSTEM
Thekeytofindingtheprobleminamisbehavingsoundsystemistoisolatepartsofthatsysteminalogicalfashiontotrackdown thefault.
DescriptionofthePROTECTsystembuiltintoallHifonicsamplifiers
The diagnostic system will shut down the amplifier, until reset by turning the head unit off, and back on. This state of affairs will be indicated by the front panel PROTECT
LEDlighting upunderthefollowing conditions:
1-Asort circuit ontheloudspeaker leads.
2-Aninternal amplifier fault thatcauses aDCoffset ontheloudspeaker output.
Shouldtheamplifier gointo protect mode, simply disconnect all RCAandspeaker leads, while keeping +12volt, powergroundandremote leads connected.
1. Nowturntheamplifier back on, andif thediagnostic LEDlights, theamplifier has aninternal fault.
2. Ifnot, plug theRCAcables back, andreset theamplifier. Ifit goes into diagnostic now, thefault lies in theinput, either withbadcables orsource unit.
3. If the amplifier seems fine with RCAcables plugged in, connect the speakers, one at a time, and if one of the speakers or its wiring is faulty, it will activate the diagnostic
system.
Amplifierheatsink overheating
Theamplifiers will shut downwhentheheatsink temperature reaches 80degrees centigrade, andturnback ononce theunit has cooled downbelow thatpoint.
Causesofoverheating:
1-Inadequatecooling - relocate or remount toprovide better natural airflow over thefins.
2 - Driving high power levels into low impedances - back off on the volume control, and/or make sure you are not loading the amplifier with less than the recommended
loudspeaker impedance.
Low outputpower
1-Check thatlevel controls have beenset upproperly.
2-Make sure thatthebattery voltage, as measured attheamplifier’s +12volt andgroundterminals, is 11volts or more.
3-Check all +12volt andgroundconnections.
Fusesblowing
1-Theuse ofloudspeaker impedances below therecommended minimums will drawmore current - check.
2-Ashort onthemain +12volt cable from thebattery tothevehicle chassis will cause themain fuse toblow.
3-Ifanamplifier fuse blows continually, withonly +12volt, groundandremote leads connected, theamplifier may befaulty.
Systemdoesnotturnon
1-Check all fuses.
2-Check all connections.
3 - Measure the +12 volt and remote turn on voltages at the amplifier terminals. If these are non existent or low, take voltage measurements at fuse holders, distribution
blocks, theheadunit’s +12volt andremote leads tolocalize theproblem.
Noiseproblems
System noise can bedivided into twocategories, hiss, andelectrical interference.
Hiss, orwhite noise
1 - High levels of white noise usually occurs when amplifier level controls are turned up too high - readjust according to the procedures in section ”Setting up systems after
installation forbest performance”
2-Anothermajor problem thatcan cause excessive hiss, is anoisy headunit -unplug theamplifier input RCAcables, andif thehiss level reduces, thesource unit is atfault.
Electricalinterference
The inside of an automobile is a very hostile electrical environment. The multitude of electrical systems, such as the ignition system, alternator, fuel pumps, air conditioners,
to mention just a few, create radiated electrical fields, as well as noise on the +12 volt supply and ground. Remember to isolate the problem - first unplug amplifier input RCA
cables, if thenoise is still present, check thespeaker leads, if not, plug theRCA’s back, andinvestigate thesource driving theamplifier, onecomponent atatime.
Atickingorwhine thatchangeswith engineRPM:
1-This problem could becaused by radiation pickup ofRCAcables tooneartoafuel pump or adistributor, forinstance, - relocate cables.
2-Check thattheheadunit groundis connected straight tothevehicle chassis, anddoes notuse factory wiring for ground.
3-Try tosupply theheadunit withaclean +12volt supply directly from thebattery +, instead ofusing asupply from thein dash wiring/fusebox.
Aconstantwhine:
This type ofnoise can bemore difficult topinpoint, butis usually caused by some kind ofinstability, causing oscillations in thesystem.
1-Check all connections, especially forgoodgrounds.
2-Make sure thatnospeaker leads areshorting toexposed metal onthevehicle chassis.
3-RCAcables arenotorious fortheir problematic nature, so check thatthese aregood, in particular theshield connections.
We have also provided several videos that will help you with your battery,
9
Maxxsonics Limited Warranty
As the manufacturer of Maxxsonics, MB Quart, Autotek, Crunch and Hifonics car audio
products, Maxxsonics USA Inc. Warrants to the original consumer purchaser the amplifier
to be free from defects in material and workmanship for one (1) Year from date of purchase.
All other parts and accessories of the system are warrantied to be free from defects in
material and workmanship for one (1) year from date of purchase. Maxxsonics will
repair or replace at it’s option and free of charge during the warranty period, any system
component that proves defective in materials and workmanship under normal installation,
use and service provided that the product is returned to the authorized Maxxsonics dealer
from where it was purchased. A photo copy of the original receipt must accompany the
product being returned.
Valid purchase receipts will contain the name and address of the authorized reseller.
Any damage to the product as a result of misuse, abuse, accident, incorrect wiring,
improper installation, alteration of date code or bar code labels, revolution, natural
disaster, or any sneaky stuff because someone messed up, repair or alteration out side
of our factory or authorized service centers and any thing else you have done that you
should not have done is not covered.
This warranty is limited to defective parts and specifically excludes any incidental
or consequential damages connected therewith. This warranty is not to be construed
as an insurance policy.
Warranty on installation labor, removal, re-installation and freight charges are not the
responsibility of Maxxsonics USA Inc.
Warranty products damaged as a result of insufficient or improper packing materials
are not covered by this limited warranty and such damaged product will be returned
“as is” at the expense of the owner.
10
OEM Integration
Accessories
MX-1 Premium High To Low Level Converter
MX-3 Bass Controller
* Converts High Level OEM speaker wires to Ultra Clean RCA
Low Level Outputs
* High Level Inputs: Accepts all types of High level Inputs
including floating ground and high voltages up to 30 volts.
* Audio Signal Sense / Hardwire Turn-On: Audio sense detects
music signals from the OEM wires and activates the MX-1. As
an option, the module also offers a remote turn-on wire.
* Parametric Bass EQ: Features Bass Boost, adjustable Band
Width (wide & narrow), Low Pass and Subsonic Filter.
* Clipping Indicators: Visually indicates audio signals Pre-Clip,
Soft Clip and Hard Clip
* Balanced Line Output: Ultra clean DIN variable high voltage
output for driving mono amps.
* Remote Output: Driver circuit to turn on amplifier when
module activates.
* Parametric Bass EQ: Provides a wide array of subwoofer output signal
shaping controls to enhance bass response and sound quality including
Bass Boost, adjustable Bandwidth (wide and narrow), Low Pass and
Subsonic Filter.
* Accepts a wide range of incoming music signal levels while
accommodating all types of head units and signal processors and
controlling the output level to the amp to maximize a signal strength up to
9 volts.
* Clipping Indicators: Visual clipping indicators provide indication of
damaging clipped signals to help protect the subwoofer(s) and amplifier.
Includes pre-clip, soft-clip and full-clip indications.
* Music Shaping: Shapes the music signal to achieve deep bass notes as
low as 15Hz.
* Bass Remote: Features for subwoofer Level control with built-
in clipping indicators.
* Input & Output Level Control: Allows for gain matching both
radio and amplifier audio signals.
* Bass Remote: Included bas Remote features built-in clipping indicators
allows direct bass control from in-dask or under-dash.
MX-2 Deluxe High To Low Level Converter
MX-4 Add A Sub High To Low Level Converter
* Converts High Level OEM speaker wires to Ultra Clean RCA
Low Level Outputs
* Converts High Level OEM speaker wires to Ultra Clean RCA Low Level
Outputs
* High Level Inputs: Accepts all types of High level Inputs
including floating ground and high voltages up to 30 volts.
* Audio Signal Sense / Hardwire Turn-On: Audio sense detects
music signals from the OEM wires and activates the MX-2. As
an option, the module also offers a remote turn-on wire.
* High Level Inputs: Accepts all types of High level Inputs including
floating ground and high voltages up to 30 volts.
* Audio Signal Sense / Hardwire Turn-On: Audio sense detects music
signals from the OEM wires and activates the MX-4. As an option, the
module also offers a remote turn-on wire.
* Remote Output: Driver circuit to turn on amplifier when module * Remote Output: Driver circuit to turn on amplifier when module activates.
activates.
11
Accessories
5V
ON
SLAVE
3V
7V
OFF
MASTER
35Hz
250Hz
1V
9V
15Hz
35Hz
TEST TONE
65Hz
RED - CLIP
GREEN - 9V
MODE
LOW PASS
FILTER
OUTPUT
LEVEL
SUBSONIC
FILTER
24 dB/OCT
24 dB/OCT MAXX-LINK
MLX-100
9V
0.2V
0
180
0dB
+10 dB
30Hz
100Hz
INPUT
LEVEL
PHASE
BOOST
BANDWIDTH
FREQUENCY
PARAMETRIC BASS EQ
-6dB
BYPASS
NORMAL
RED - CLIP
GREEN - 9V
-20dB
0dB
LEVEL
12
PART#: A1109
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