Maxxsonics Car Amplifier P1 6004 User Manual

P1-600.2 / P1-1000.2  
P1-600.4 / P1-1000.4  
P1-2000.1 / P1-5000.5  
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  
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 8 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. Power One 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. P1 specifications  
can be found on page 8.  
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  
POWER ONE 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.  
! All Crunch amplifiers feature a comprehensive diagnostic system, with speaker lead short circuit, and amplifier DC  
faults indicated by the red “PROTECT” LED.  
! The input sensitivities for rated output powers are variable from 0.2V to 6V on all models.  
! All crossovers are fully variable in their respective ranges.  
! Crossover filters are 12dB/Octave.  
! A POWER LED indicates the powered up and turned on condition.  
! 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.  
P1-600.2 / P1-1000.2 2-CHANNEL AMPLIFIERS  
L
L
LEVEL BASS EQ HPF  
LPF  
X-OVER  
MODE  
+
- gnd -  
HI INPUT  
+
6V 0.2V  
0dB 12dB 60Hz 12KHz 30Hz 250Hz  
FULL LPF HPF MONO  
STEREO  
R
R
LINE OUT LINE INPUT  
TheX-OVERslide switch selects theinternal crossover functions:  
-Theinput signal is routed directly tothe LINEOUTRCAjacks, regardless oftheX-OVERsetting simplifying daisy chaining ofamplifiers.  
-HPF:Selects thebuilt in HIGHPASSfilter, variable from 60Hzto12kHz.  
-FULL:Bypasses all crossovers for full frequency rangeoperation.  
-LPF:Selects thebuilt in LOW PASS, variable from 30 Hzto250Hz.  
-BASSEQ:Adjustable 45Hzbass boost from 0dBto12dB.  
MODE:The mode switch allows you tochoose Stereofor full range 2channel operation or MONO for bridging operation  
HIGHINPUT:If your radio/CD player does not have unbalanced (RCA)outputs, you can use theHIGH level (wire) inputs.  
LINEINPUT:The line input accepts unbalanced (RCA)inputs from 0.2Vto6V.  
LINEOUTPUT:Theline output passes throughsignal from theline inputs which allows you todaisy chain multiple amplifiers from onesignal.  
Notethat the LOW PASSsignal is MONO.  
-In the LPFposition, the HIGHPASSfilteracts asasubsonic filter.  
-When the LPFmode is selected, a 0to +12dB, at 45Hz, BASS-EQ is also switched in.  
P1-600.4 / P1-1000.4 4-CHANNEL AMPLIFIERS  
HIGH INPUT  
MODE  
X-OVER  
X-OVER  
+
- GND -  
+
+
- GND -  
+
CH1  
CH3  
2
3
4
LPF HPF FULL  
FULL HPF LPF  
CH1 CH2 CH3 CH4  
LEVEL BASS EQ HPF LPF  
LPF  
HPF BASS EQ LEVEL  
CH2  
CH4  
INPUT OUTPUT INPUT  
30Hz 250Hz 60Hz 12KHz 0dB 12dB 6V 0.2V  
CHANNEL 1 / 2  
6V 0.2V 0dB 12dB 60Hz 12KHz 30Hz 250Hz  
CHANNEL 3 / 4  
The4 channel amps have the same features as the 2channel models accept thatthere are2sets ofcontrols. 1 set for channels 1&2and 1 set for channels 3&4.  
In addition, the 4 channel models have a Mode switch which allows you to select 2, 3 or 4 channel operation. Switch to 2 channel if you only have 1 set of RCA’sin CH 1/2 and  
the unit will automatically supply signal to channels 3/4. Select 3 channel when you only have RCA’s in CH 1/2 but plan to run channels 3/4 bridged. Select 4 channel if you  
areproviding RCA’stochannels 1/2and3/4.  
TheX-OVERslide switch selects theinternal crossover functions:  
-The input signal is routeddirectly to theLINEOUT RCAjacks, regardless oftheX-OVERsetting simplifying daisy chaining ofamplifiers.  
-HPF:Selects the built in HIGHPASSfilter, variable from 60Hzto12kHz.  
-FULL:Bypasses all crossovers for full frequency range operation.  
-LPF:Selects thebuilt in LOW PASS, variable from 30Hzto250Hz.  
-BASSEQ:Adjustable 45Hzbass boost from 0dBto12dB.  
LINEINPUT:The line input accepts unbalanced (RCA)inputs from 0.2Vto6V.  
LINEOUTPUT:The line outputpasses through signal from theline inputs which allows you todaisy chain multiple amplifiers from one signal.  
Notethat the LOW PASSsignal is MONO.  
-In the LPFposition, the HIGHPASSfilteracts as a subsonic filter.  
-When the LPFmode isselected, a0to +12dB, at 45Hz, BASS-EQ isalso switched in.  
P1-2000.1 MONO BLOCK AMPLIFIERS  
OUTPUT INPUT  
REMOTE  
CONTROL  
BASS  
SUB  
LOW  
BOOST SONIC PASS  
LEVEL  
POWER  
L
L
PROTECT  
0dB 12dB 15Hz 55Hz 40Hz 150Hz 6V 0.2V  
R
R
-TheLINEINPUTsignal is routed directly totheLINEOUTRCAjacks, regardless oftheX-OVERsetting simplifying daisy chaining ofamplifiers.  
-SUBSONIC:Allows you toadjust thecrossover filter from 15Hz to55Hz.  
-LOWPASS:Allows yo to adjust theLOW PASScrossover filter from 40Hzto150Hz.  
LEVEL: Adjusts the input sensitivity from 0.2 volts to6volts.  
BASSBOOST: 45Hzbass boost adjustable from 0dbto12dB.  
REMOTECONTROL:This is the input jack for theremote Level control.  
LINEINPUT:Theline input accepts unbalanced (RCA)inputs from 0.2Vto6V.  
LINEOUTPUT:The line outputpasses through signal from theline inputs which allows you todaisy chain multiple amplifiers from one signal.  
The mono amps arecapable of 4, 2&1-Ohm loads.  
Operating the amp below 1-Ohm can cause damage to the amp not coveredin the warranty.  
P1-5000.5 5-CHANNEL AMPLIFIERS  
3/4 CH CONTROLS  
1/2 CH CONTROLS  
CH5 CH4 CH2  
MODE  
LEVEL  
HPF  
LEVEL  
HPF  
REMOTE  
L
4CH  
5CH  
FULL  
FULL  
HPF  
HPF  
10Hz 150Hz  
6V 0.2V  
10Hz 150Hz  
6V 0.2V  
X-OVER  
X-OVER  
R
15Hz 55Hz  
0dB 12dB  
BASS EQ  
5 CH CONTROLS  
6V 0.2V  
LEVEL  
30Hz 150Hz  
LPF  
POWER  
PROTECT  
CH5 CH3 CH1  
SUBSONIC  
The5 channel amp have thesame features as the4channel models accept thatthereis an additional set ofcontrols for channel 5  
TheX-OVERslide switch selects theinternal crossover functions:  
-Theinput signal is routed directly tothe LINEOUTRCAjacks, regardless oftheX-OVERsetting simplifying daisy chaining ofamplifiers.  
-HPF:Selects thebuilt in HIGHPASSfilter, variable from 10Hzto150Hz.  
-FULL:Bypasses all crossovers for full frequency rangeoperation.  
-LPF:Selects thebuilt in LOW PASS, variable from 30 Hzto150Hzfor channel 5only.  
MODE:The mode switch allows you tochoose 4or 5channel operation.  
LINEINPUT:The line input accepts unbalanced (RCA)inputs from 0.2Vto6V.  
SUBSONIC: Is adjustable from 15Hzto55Hzfor thechannel 5only.  
BASSEQ: Is adjustable from 0dBto12dBfor channel 5only.  
REMOTE:this is used for theBass Remotemodule.  
2
P1-600.2 / P1-1000.2 2 CHANNEL AMPLIFIER APPLICATIONS  
FULL RANGE STEREO  
This is themost basic application fortheP1Series 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  
TO BATTERY +12v  
VIA FUSE  
REMOTE TURN-ON  
CHASSIS GROUND  
MONO  
This application illustrates the basic mono bridging method for all Crunch  
amplifiers.  
Switchsettingchecklist:  
-TheAMPLIFIERX-OVERswitch should bein theLPFposition andtheMODE  
should bein the MONO 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.  
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-.  
Crossoverfrequencycontrolsettingchecklist:  
LPF:11o’clock  
Minimum finalloudspeakerimpedance:  
-4ohmmono.  
MONO SPEAKER  
FULL RANGE  
MONO LINE INPUT  
VIA Y-ADAPTER  
FROM MONO SOURCE  
TO BATTERY +12v  
VIA FUSE  
REMOTE TURN-ON  
CHASSIS GROUND  
The HIGH LEVEL inputs are used when the radio/CD player does not have RCA cable outputs. You can connect the radio/CD player speaker wires directly to the  
amplifier via the high Level Inputs.  
Use both connectors for 4 CH amplifiers  
Use this connector for 2 CH amplifiers  
GRAY: CH 1 Speaker Input +  
BROWN: CH 1 Speaker input -  
Black: Chassis Ground  
ORANGE: CH 3 Speaker Input +  
PINK: CH 3 Speaker input -  
Black: Chassis Ground  
GREEN: CH 2 Speaker Input -  
White: CH 2 Speaker Input +  
BLUE: CH 4 Speaker Input -  
YELLOW: CH 4 Speaker Input +  
3
P1-600.4 / P1-1000.4 4-CHANNEL AMPLIFIER APPLICATIONS  
4 CHANNEL FULL RANGE SYSTEM  
Here we show how to use the 4 channel amplifiers as straight forward discrete 4  
channel full rangeunits.TheMODEswitch should bein 4CH.  
-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.  
FULL RANGE  
STEREO LINE  
INPUTS  
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 Crunchamplifiers.  
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:  
- MODE:Setat3CH  
-LOW PASS:N/A  
- Connect the inputs of channel pair 1/2 to a suitable stereo source, e.g. a head  
unit withgoodquality RCAcables.  
Channels3/4:  
-HIPASS:N/A  
-LPF:11o’clock  
-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 2ch. The amplifier will auto sum the signal and  
provide mono outputfor bridged channels 3/4.  
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.  
Levelcontrolchecklist:  
-Refertothesection “Settingupsystems afterinstallation forbest performance”  
- 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 CH4 +, and its negative  
terminal toCH3- as shown.  
Minimum finalloudspeakerimpedances:  
-2ohmperchannelinstereomode.  
-4ohmmonobridged.  
STEREO LINE INPUT  
MONO LINE INPUT  
(Unless using procedure  
listed above for 3ch)  
4
P1-600.4 / P1-1000.4 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, with mono sub bass.  
Channels 1/2:  
- HI PASS: 100 Hz  
LOW PASS: N/A  
Interconnect cable checklist:  
Channels 3/4:  
- HI PASS: 100 Hz  
- LOW PASS: N/A  
- Using good quality RCA cables, feed the front and rear outputs of a head  
unit to the inputs of the 4 channel amplifier as shown.  
- Also connect the LINE OUT of the 4 channel amplifier to the LINE INPUT of  
the 2 channel amplifier as shown.  
2 channel bass amplifier:  
- HI PASS (Subsonic filter): 10 Hz to 40 Hz  
- LOW PASS: 80 Hz  
Mono bass woofer wiring:  
Connect the mono speaker positive terminal to the CH4 +, and its negative  
terminal to CH3 -.  
Please note that these frequency points are suggestions only. Refer to the  
loudspeaker manufacturer specifications and the section “Setting up systems  
after installation for best performance”  
Switch setting checklist:  
4 channel highs amplifier:  
- 1/2CH X-OVER: HPF  
- 3/4CH X-OVER: HPF  
Level control checklist:  
- Refer to the section “Setting up systems after installation for best  
performance”  
2 channel bass amplifier:  
- X-OVER switch: LPF  
Minimum final loudspeaker impedances:  
- 2 ohm per channel in stereo mode.  
- 4 ohm mono bridged.  
Crossover frequency control checklist:  
- 4 channel highs amplifier:  
FULL RANGE  
STEREO LINE  
INPUTS  
STEREO  
INTERCONNECT  
RCA CABLE  
MONO SPEAKER  
TO BATTERY +12v  
VIA FUSE  
REMOTE TURN-ON  
CHASSIS GROUND  
5
P1-2000.1 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:40Hzto150Hz  
SUBSONIC:15Hzto 55Hz  
BASSEQ:0to+12dB  
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.  
MONO  
SUBWOOFER  
MIN MAXX  
DESIGNATED  
MONO OUTPUT  
FROM HEAD UNIT  
TO BATTERY +12v  
VIA FUSE  
REMOTE TURN-ON  
CHASSIS GROUND  
PARALLEL MONO  
SUBWOOFERS  
POWER INPUT  
GND REM BATT+12V  
FUSE  
SPEAKER OUTPUT  
+
+
-
-
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
P1-5000.5 5-CHANNEL AMPLIFIER APPLICATION  
Basic application  
Here we show how to use the channel amplifier as straightforward discrete 5  
channel full rangeunits.  
Channels3/4:  
-HIPASS:N/A  
-LOW PASS:N/A  
Interconnectcablechecklist:  
- Connectthefour inputs oftheamplifier toaRadio/CDwithquality RCAcables.  
Levelcontrolchecklist:  
- Refertothesection “Settingupsystems afterinstallation forbest performance”  
Switchsettingchecklist:  
-1/2CHX-OVER: FULL  
-3/4CHX-OVER: FULL  
Minimum finalloudspeakerimpedances:  
-2-Ohms perchannel.  
Crossoverfrequencycontrolchecklist:  
Channels1/2:  
-HIPASS:N/A  
-LOW PASS:N/A  
DESIGNATED MONO  
CHANNEL 5 INPUTS  
CHASSIS GROUND  
NPUT  
REMOTE TURN-ON  
TO BATTERY + 12 Volts VIA FUSE  
FULL RANGE  
SPEAKERS  
SUBWOOFER  
FULL RANGE  
STEREO LINE  
INPUTS  
7
8
SETTING UP SYSTEMS AFTER INSTALLATION FOR BEST PERFORMANCE  
P1-600.2 / P1-1000.2 / P1-600.4 / P1-1000.4 / P1-5000.5  
General:  
At this point you are ready to get more specific on the settings for your amplifier.  
High Pass:  
-When in HPF 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 HPF 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 LPF 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 HPF to 60Hz, the amplifier will not play frequencies below 60Hz but will play  
frequencies from 60Hz to the chosen Low Pass frequency.  
-When in FULL operation, the LPF 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 LPF 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 LPF 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 HPF 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.  
P1-2000.1  
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 Boost:  
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 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 LPF 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!  
9
TROUBLESHOOTING A SYSTEM  
Thekeytofindingtheprobleminamisbehavingsoundsystemistoisolatepartsofthatsysteminalogicalfashiontotrackdown thefault.  
DescriptionofthePROTECTsystembuiltintoallCrunchamplifiers  
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,  
10  
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.  
11  

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