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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 9 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. PZi series amplifiers require 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 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.
NOTE: This Matrix is a general rule
of thumb. Please refer to the
manufacturers specific
requirements. PZi specifications
can be found on page 9.
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
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AMPLIFIER FEATURE DESCRIPTIONS
POWERZONE 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.
! A POWER LED indicates the powered up and turned on condition.
! All Crunch 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
! The input sensitivities for rated output powers are variable from 0.2 volt to 5 volt.
! All crossovers are fully variable in their respective ranges.
! Crossover filters are 12dB/Octave.
PZi100.2 / PZi250.2 / PZi325.2 2-CHANNEL AMPLIFIERS
TheX-OVERslideswitchselects theinternalcrossoverfunctions:
-The input signal is routed directly to the LINE OUT RCA jacks, regardless of the X-OVER setting
simplifyingdaisychainingofamplifiers.
L
L
-HPF:Selects thebuiltinHIGHPASSfilter,variablefrom60Hzto1.2kHz.
-FULL:Bypasses allcrossovers forfullfrequencyrangeoperation.
-LPF:Selects thebuiltinLOW PASS,variablefrom30Hzto250Hz.
MODE: The mode switch allows you to choose Stereo for full range 2 channel operation or MONO
forbridgingoperation
LEVEL BASS EQ HPF
LPF
X-OVER
MODE
+
- gnd -
HI INPUT
+
FULL LPF HPF MONO
STEREO
5V 0.2V
0dB 12dB 60Hz 1.2KHz 30Hz 250Hz
R
LINE OUT LINE INPUT
R
HIGH INPUT: If your radio/CD player does not have unbalanced (RCA) outputs, you can use the
HIGHlevel(wire)inputs.
LINEINPUT:Thelineinputaccepts unbalanced(RCA)inputs from0.2Vto5V.
LINE OUTPUT:The line output passes through signal from the line inputs which allows you to daisy
chainmultipleamplifiers fromonesignal.
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.
PZi100.4 / PZi125.4 / PZi175.4 4-CHANNEL AMPLIFIERS
The 4 channel amps have the same features as the 2 channel models accept that there are 2 sets of
controls.
1setforchannels 1&2and1setforchannels 3&4.
In addition, the 4 channel models have a Mode switch which allows you to select 2, 3 or 4 channel
operation.
TheX-OVERslideswitchselects theinternalcrossoverfunctions:
-The input signal is routed directly to the LINE OUT RCA jacks, regardless of the X-OVER setting
simplifyingdaisychainingofamplifiers.
-HPF:Selects thebuiltinHIGHPASSfilter,variablefrom60Hzto1.2kHz.
-FULL:Bypasses allcrossovers forfullfrequencyrangeoperation.
-LPF:Selects thebuiltinLOW PASS,variablefrom30Hzto250Hz.
MODE: The mode switch allows you to choose Stereo for full range 2 channel operation or MONO
forbridgingoperation
HIGH INPUT: If your radio/CD player does not have unbalanced (RCA) outputs, you can use the
HIGHlevel(wire)inputs.
LINEINPUT:Thelineinputaccepts unbalanced(RCA)inputs from0.2Vto5V.
LINE OUTPUT: The line output passes through signal from the line inputs which allows you to daisy
chainmultipleamplifiers fromonesignal.
CHANNEL 3 / 4
LEVEL BASS EQ HPF
LPF
CH3 CH4
X-OVER
MODE
LINE INPUT
R
L
+
- gnd -
HI INPUT
+
R
L
2
CHANNEL
3
4
5V 0.2V
0dB 12dB 60Hz 1.2KHz 30Hz 250Hz
FULL LPF HPF
LEVEL BASS EQ HPF
LPF
X-OVER
+
- gnd -
+
CH3/4
CH1/2
CH1 CH2
5V 0.2V
0dB 12dB 60Hz 1.2KHz 30Hz 250Hz
CHANNEL 1 / 2
FULL LPF HPF
LINE OUTPUT
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
settingsimplifyingdaisychainingofamplifiers.
PZi1000.1 / PZi1500.1 1-CHANNEL MONO BLOCK AMPLIFIERS
-SUBSONIC:Allows youtoadjustthecrossoverfilterfrom15Hzto55Hz.
-LPF:Allows yotoadjusttheLOW PASScrossoverfilterfrom40Hzto150Hz.
MODE:The mode switchallows youtochoose Stereoforfullrange 2channeloperationorMONOfor
bridgingoperation
OUTPUT INPUT
REMOTE
SUB
CONTROL
BASS EQ
LPF LEVEL
SONIC
L
L
POWER
PROTECT
LEVEL: Adjusts theinputsensitivityfrom0.2volts to5volts.
0dB 12dB
40Hz 150Hz 6V 0.2V
15Hz 55Hz
R
R
BASSEQ:TheBass EQis adjustablefrom0dbto12dB.
REMOTE:This is theinputjackfortheunder-dashbass remotemodule.
LINEINPUT:Thelineinputaccepts unbalanced(RCA)inputs from0.2Vto6V.
LINE OUTPUT: The line output passes through signal from the line inputs which allows you to daisy
chainmultipleamplifiers fromonesignal.
Themonoampsarecapableof 4, 2&1-Ohm loads.
Operating the amp below 1-Ohm can cause damage to the
ampnotcoveredin thewarranty.
LINEINPUT:Accepts unbalancedRCAinputs from0.2volts to9volts.
LINE OUTPUT: The unbalanced RCAoutputs are set the same as the CROSSOVER switch on the
sidemountcontrol.
PZi2000.1D / PZi3000.1D 1-CHANNEL D-CLASS MONO AMPLIFIERS
BALANCED INPUT:Accepts balanced line inputs from 0.4 volts to 12 volts for the optional MMBLD-
1balancedlinedriver.
LEVEL:The inputlevelcontrolallows youtomatchthe amplifierinputsensitivitytothe outputlevelof
the RADIO/CD source from 0.2 volts to 9 volts when using unbalanced (RCA) and 0.2 volts to 18
volts withthebalancedinput.
INPUT OUTPUT
BALANCED LEVEL
INPUT
PHASE
REMOTE
BASS EQ
SUBSONIC
LOW PASS
PWR
L
L
9V
0.2V
0
180
0dB 10dB
15
35Hz 35 250Hz PRO
PHASE:ThePhaseshiftis fullyadjustablefrom0to180degrees.
R
R
REMOTE:TheRJ45Remotejackaccepts theBass RemoteModule.
BASSEQ:TheBass Boostis fullyadjustablefrom0to10dbat45Hz.
SUBSONIC:ThevariableSubsonicfilteris fullyadjustablefrom15Hzto35Hz.
LOWPASS:Thebuilt-inlowpass frequencies arefullyvariablefrom35to250Hz.
POWER:Indicates thattheamphas power,groundandremoteturn-oninputviaagreenL.E.D.
PROTECT: Indicates that the amplifier has detected a fault and will not operate. There are several
possible problems that can cause the amplifier to go into the protect mode. See the trouble
shootingguideinthebackofthemanualfordetails.
Themonoampsarecapableof 4, 2&1-Ohm loads.
Operating the amp below 1-Ohm can cause damage to the
ampnotcoveredin thewarranty.
2
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PZi100.2 / PZi250.2 / PZi325.2 / 2 CHANNEL AMPLIFIER APPLICATIONS
FULL RANGE STEREO
This is the most basic application for the POWERZONE Series 2 channel
amplifiers.
4. Line Level:
Refer to the section “Setting up systems after installation for best
performance”.
1. Interconnect cable checklist:
Connect the LINE INPUTS to the Radio/CD with good quality RCA cables.
2. Crossover Switch:
The X-OVER switch must be in the FULL position.
3. Crossover frequency control checklist:
N/A for full range operation.
NOTE: Minimum final loudspeaker impedances:
4 &-2-Ohms stereo mode or 4-Ohms mono mode
This amplifier will not do 1-Ohm stereo or 2/1-Ohm mono operation.
FULL RANGE
SPEAKERS
FULL RANGE
STEREO LINE INPUT
TO BATTERY + 12 volts VIA FUSE
REMOTE TURN-ON
CHASSIS GROUND
FULL RANGE MONO
This application illustrates the basic mono bridging method for all
POWERZONE 2 channel amplifiers.
Switch setting checklist:
- The AMPLIFIER X-OVER switch must be in the FULL position.
Interconnect cable checklist:
Crossover frequency control setting checklist:
N/A for full range operation.
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 roll-off.
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 the output stage of that source.
It is necessary to feed the SAME signal to both left and right inputs via a Y-
adapter RCA cable. Connect the mono speaker positive terminal to the LEFT
+, and its negative terminal to RIGHT -.
Minimum final loudspeaker impedance:
- 4-Ohms mono.
FULL RANGE
MONO SPEAKER
FULL RANGE
MONO LINE INPUT
VIA Y-ADAPTER
TO BATTERY + 12 volts VIA FUSE
REMOTE TURN-ON
FROM MONO SOURCE
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
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PZi100.2 / PZi250.2 / PZi325.2 / 2-CHANNEL AMPLIFIER APPLICATIONS
Stereo high pass with mono low-pass in a 2 way active, or bi-amplified system
In this application we will use a 2 channel amplifier for the high frequencies, and
a second one for the low frequencies, or mono sub bass. Please consult the
speakerspecifications todeterminemaximumamplifierpowerrequirements.
Lows amplifier:
-HIPASS(Subsonicfilter):10Hzto40Hz
-LOW PASS:100Hz
Interconnectcablechecklist:
Connect the inputs of the HIGHS amplifier to a Radio/CD with good quality RCA
cables. Connect the LINE OUTof the HIGHS amplifier to the inputs of the BASS
amplifierwithastereoRCAtoRCAcable.
Please note that these frequency points are suggestions only. Refer to the
loudspeaker manufacturer specifications and the section “Setting up systems
afterinstallation forbest performance”
Mono basswooferwiring:
Connect the mono speaker positive terminal to the LEFT +, and its negative
terminaltoRIGHT-.
Levelcontrolchecklist:
-Refertothesection“Settingupsystems afterinstallation forbest performance”
Minimum finalloudspeakerimpedances:
-2-Ohms perchannelstereo.
-4-Ohms monobridged.
Switchsettingchecklist:
-Highsamplifier: X-OVERswitchintheHPFposition.
-Lows amplifier: X-OVERswitchintheLPFposition.
Crossoverfrequencycontrolchecklist:
Highsamplifier:
-HIPASS:100Hz
STEREO
HIGHS
SPEAKERS
-LOW PASS:N/A
FULL RANGE
STEREO LINE INPUT
2 CHANNEL
HIGHS AMPLIFIER
TO BATTERY +12 Volts VIA FUSE
REMOTE TURN-ON
CHASSIS GROUND
STEREO
INTERCONNECT
RCA CABLE
MONO BASS
SPEAKER
2 CHANNEL
SUB BASS AMPLIFIER
TO BATTERY +12 Volts VIA FUSE
REMOTE TURN-ON
CHASSIS GROUND
4
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PZi100.4 / PZi125.4 / PZi175.4 / 4 CHANNEL AMPLIFIER APPLICATIONS
4 CHANNEL FULL RANGE SYSTEM
Here we show how to use the 4 channel amplifiers as straightforward discrete 4
channelfullrangeunits.
Channels3/4:
-HIPASS:N/A
-LOW PASS:N/A
Interconnectcablechecklist:
-Connectthefourinputs oftheamplifiertoaRadio/CDwithqualityRCAcables.
Levelcontrolchecklist:
-Refertothesection“Settingupsystems afterinstallation forbest performance”
Switchsettingchecklist:
-1/2CHX-OVER: FULL
-3/4CHX-OVER: FULL
Minimum finalloudspeakerimpedances:
-2-Ohms perchannel.
FULL RANGE
SPEAKERS
Crossoverfrequencycontrolchecklist:
Channels1/2:
-HIPASS:N/A
-LOW PASS:N/A
TO BATTERY + 12 Volts VIA FUSE
REMOTE TURN-ON
FULL RANGE
STEREO LINE
INPUTS
CHASSIS GROUND
2 or 3 CHANNEL FULL RANGE SYSTEM
Here we showhowtouse the 4channelamplifiers as fullrange 2or3channelunits
bytakingadvantageofthemonobridgingcapabilityofallCrunchamplifiers.
Channels1/2:
-HIPASS:N/A
-LOW PASS:N/A
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 the example
toalsomonobridgechannelpair1/2.
Channels3/4:
-HIPASS:N/A
-LOW PASS:N/A
Interconnectcablechecklist:
-Connectthe inputs ofchannelpair1/2toa suitable stereosource, e.g. a headunit
withgoodqualityRCAcables.
- A MONO 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,orbuiltintoaheadunitorequalizer.
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 output
stageofthatsource.
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
lowpass rolloff.
Levelcontrolchecklist:
-Refertothesection“Settingupsystems afterinstallation forbest performance”
Minimum finalloudspeakerimpedances:
-2-Ohms perchannelinstereomode.
-4-Ohms monobridged.
-Itis necessarytofeedthe SAMEsignaltobothleftandrightinputs via aY-adapter
RCAcable.
- Connect the mono speaker positive terminal to the LEFT +, and its negative
terminaltoRIGHT-as shown.
Switchsettingchecklist:
-1/2CHX-OVER: FULL
-3/4CHX-OVER: FULL
MONO
OR SUB BASS
STEREO
FULL RANGE
OR HIGHS
SPEAKER
Crossoverfrequencycontrolchecklist:
SPEAKERS
1 STEREO
1 MONO
TO BATTERY + 12 Volts VIA FUSE
REMOTE TURN-ON
CHASSIS GROUND
FULL RANGE
LINE INPUTS
5
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PZi100.4 / PZi125.4 / PZi175.4 / 4 CHANNEL AMPLIFIER APPLICATIONS
2 way active, or bi-amplified system with mono bass
This application shows how easily a 2 way active system can be implemented
using a 4 channel amplifier. Channels 1 and 2 will be used for highs, and
channels 3and4formonobass.
Channels3/4:
-HIPASS(subsonic):20Hz
-LOW PASS:100Hz
Interconnectcablechecklist:
- We need to feed the same signal to both sets of channels, so must use 2 Y-
adapters, one tofeedthe LEFTsignaltochannels 1and3, andthe rightsignalto
channels 2and4,as shown.
Please note that these frequency points are suggestions only. Refer to the
loudspeaker manufacturer specifications and the section “Setting up systems
afterinstallation forbest performance”
Mono basswooferwiring:
Levelcontrolchecklist:
- Connect the mono speaker positive terminal to the LEFT +, and its negative
terminaltoRIGHT-.
Refertothesection“Settingupsystems afterinstallation forbest performance”
Minimumfinalloudspeakerimpedances:
-2-Ohmsperchannelinstereomode.
-4-Ohmsmonobridged.
Switchsettingchecklist:
-1/2CHX-OVER: HP
-3/4CHX-OVER: LP
Crossoverfrequencycontrolchecklist:
Channels1/2:
-HIPASS:100Hz
MONO
BASS
SPEAKER
STEREO
HIGHS
SPEAKERS
-LOW PASS:N/A
LEFT TO
CHANNELS
1 AND 3
TO BATTERY + 12 Volts VIA FUSE
REMOTE TURN-ON
CHASSIS GROUND
RIGHT TO
CHANNELS
3 AND 4
2 way active, or bi-amplified system with mono bass, and faded highs/lows
Here we present a variation of the previous system. Since this is a 2 way
system, we can use the front outputs from a head unit to drive the highs, and the
rear output to drive the bass This method allows the listener to easily adjust the
relativelevels ofbass tohighs,withthefronttorearfadeontheheadunit.
Channels 1and2willbeusedforhighs,andchannels 3and4formonobass.
- Follow the instructions as per the previous system for switch and crossover
settings.
Interconnectcablechecklist:
- Use good quality RCAleads to connect the inputs of the amplifier to the source
as shown.
MONO
BASS
SPEAKER
STEREO
HIGHS
SPEAKERS
FULL RANGE
STEREO LINE
INPUTS
TO BATTERY + 12 Volts VIA FUSE
REMOTE TURN-ON
CHASSIS GROUND
6
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PZi1000.1 / PZi1500.1 / MONO AMPLIFIER APPLICATIONS
Basic application
These sub bass amplifiers can be used any of the bi-amplification systems
described in this manual, replacing the 2 channel amplifiers as per the
illustrations.
Crossoverfrequencycontrolchecklist:
LOW PASS:40Hzto150Hz
SUBSONIC:15Hz to 55Hz
BASSEQ: 0to +12dB
Interconnectcablechecklist:
Connect the inputs to a suitable source, e.g. a head unit with good quality RCA
cables.ConnecttheLINEOUTtotheinputs ofthesystemhighs amplifier.
PHASE:0to180degrees
Levelcontrolchecklist:
Refertothesection“Setting upsystems afterinstallation for best performance”
Use at least #12 gauge speaker wiring. The amps have dual speaker terminals,
simplifyingthehookupofmultiplespeakers
Minimum final loudspeakerimpedance: 1-Ohm.
FULL RANGE
STEREO LINE INPUT
Y-ADAPTOR
MONO
SUBWOOFER
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
0dB
PZiR-1
18dB
DESIGNATED MONO
OUTPUT FROM HEAD UNIT
PARALLEL MONO
SUBWOOFERS
2-OHMS EACH MINIMUM
TO BATTERY +12 Volts
REMOTE TURN-ON
CHASSIS GROUND
PZi2000.1D / PZi3000.1D / D-CLASS MONO AMPLIFIER APPLICATIONS
Basic application
These sub bass amplifiers can be used any of the bi-amplification systems
described in this manual, replacing the 2 channel amplifiers as per the
illustrations.
Crossoverfrequencycontrolchecklist:
LOW PASS:35Hzto 250Hz
SUBSONIC:15Hz to35Hz
BASSEQ: 0to+10dB
Interconnectcablechecklist:
Connect the inputs to a suitable source, e.g. a head unit with good quality RCA
cables.ConnecttheLINEOUTtotheinputs ofthesystemhighs amplifier.
PHASE:0to 180degrees
Levelcontrolchecklist:
Refertothesection“Setting upsystems after installation forbest performance”
Use at least #12 gauge speaker wiring. The amps have dual speaker terminals,
simplifyingthehookupofmultiplespeakers
Minimum finalloudspeakerimpedance: 1-Ohm.
FULL RANGE
STEREO LINE INPUT
Y-ADAPTOR
MONO
SUBWOOFER
DESIGNATED MONO
OUTPUT FROM HEAD UNIT
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
0dB
10dB
PZiR-1
PARALLEL MONO
SUBWOOFERS
2-OHMS EACH MINIMUM
TO BATTERY +12 Volts
REMOTE TURN-ON
CHASSIS GROUND
7
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PZi 550.5 / 5 CHANNEL AMPLIFIER FEATURE DESCRIPTION
The5channelamphavethesamefeatures as the4channelmodels acceptthatthereis anadditionalsetofcontrols forchannel5
TheX-OVERslideswitchselects theinternalcrossoverfunctions:
-Theinputsignalis routeddirectlytotheLINEOUT RCAjacks,regardless oftheX-OVERsettingsimplifyingdaisychainingofamplifiers.
-HPF:Selects thebuiltinHIGHPASSfilter,variablefrom10Hzto150Hz.
-FULL:Bypasses allcrossovers forfullfrequencyrangeoperation.
-LPF:Selects thebuiltinLOW PASS,variablefrom30Hzto150Hzforchannel5only.
MODE:Themodeswitchallows youtochoose4or5channeloperation.
LINEINPUT:Thelineinputaccepts unbalanced(RCA)inputs from0.2Vto5V.
SUBSONIC:Is adjustablefrom15Hzto55Hzforthechannel5only.
BASSEQ:Is adjustablefrom0dBto12dBforchannel5only.
REMOTE:this is usedforthePZiR-1Bass Remotemodule.
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
5V 0.2V
10Hz 150Hz
5V 0.2V
X-OVER
X-OVER
R
15Hz 55Hz
0dB 12dB
BASS EQ
5 CH CONTROLS
30Hz 150Hz
LPF
5V 0.2V
LEVEL
POWER
PROTECT
CH5 CH3 CH1
SUBSONIC
AMPLIFIER APPLICATIONS
5 CHANNEL FULL RANGE SYSTEM
Here we show how to use the channel amplifier as straightforward discrete 5
channelfullrangeunits.
Channels3/4:
-HIPASS:N/A
-LOW PASS:N/A
Interconnectcablechecklist:
-Connectthefourinputs oftheamplifiertoaRadio/CDwithqualityRCAcables.
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
NPUT
CHASSIS GROUND
REMOTE TURN-ON
FULL RANGE
STEREO LINE
INPUTS
TO BATTERY + 12 Volts VIA FUSE
FULL RANGE
SPEAKERS
SUBWOOFER
8
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SETTING UP SYSTEMS AFTER INSTALLATION FOR BEST PERFORMANCE
PZi100.2 / PZi250.2 / PZi325.2 / PZi100.4 / PZi124.4 / PZi550.5
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 chosen Low Pass frequency.
-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 25Hz, the amplifier will not play frequencies below 25Hz
but will play frequencies from 25Hz to the chosen Low Pass frequency.
-When in Flat/Full operation, the High 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 startwiththebass,orlowfrequencyamplifieras areference,byturningits controluptothepointwheredistortionis audible,andbackitoffsome.
Nowadjustthelevelcontrolforthehighs ortweeterchannels ina2wayactivesystem,tobalancethehighs 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
PZi1000.1 / PZi1500.1 / PZi2000.1D / PZi3000.1D
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.
Phase:
The variable Phase adjustment allows you to change the relative time that the waveform meets your ear. With standard subwoofer installations where the subwoofer is behind you, the
Phase should generally be at 0. When subwoofers or woofers are in the kick panels or door panels, the Phase adjustment is useful in delaying the timing of the wave meeting your ear by
adjusting the potentiometer to 180 degrees.
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!
10
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TROUBLESHOOTING A SYSTEM
Thekeytofindingtheprobleminamisbehavingsoundsystemistoisolatepartsofthatsysteminalogicalfashiontotrackdown thefault.
DescriptionofthePROTECTsystembuiltintoallPowerZoneamplifiers
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
LEDlightingupunderthefollowingconditions:
1-Asortcircuitontheloudspeakerleads.
2-Aninternalamplifierfaultthatcauses aDCoffsetontheloudspeakeroutput.
Shouldtheamplifiergointoprotectmode,simplydisconnectallRCAandspeakerleads,whilekeeping+12volt,powergroundandremoteleads connected.
1.Nowturntheamplifierbackon,andifthediagnosticLEDlights,theamplifierhas aninternalfault.
2.Ifnot,plugtheRCAcables back,andresettheamplifier.Ifitgoes intodiagnosticnow,thefaultlies intheinput,eitherwithbadcables orsourceunit.
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 willshutdownwhentheheatsinktemperaturereaches 80degrees centigrade,andturnbackononcetheunithas cooleddownbelowthatpoint.
Causesofoverheating:
1-Inadequatecooling-relocateorremounttoprovidebetternaturalairflowoverthefins.
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
loudspeakerimpedance.
Low outputpower
1-Checkthatlevelcontrols havebeensetupproperly.
2-Makesurethatthebatteryvoltage,as measuredattheamplifier’s +12voltandgroundterminals,is 11volts ormore.
3-Checkall+12voltandgroundconnections.
Fusesblowing
1-Theuseofloudspeakerimpedances belowtherecommendedminimums willdrawmorecurrent-check.
2-Ashortonthemain+12voltcablefromthebatterytothevehiclechassis willcausethemainfusetoblow.
3-Ifanamplifierfuseblows continually,withonly+12volt,groundandremoteleads connected,theamplifiermaybefaulty.
Systemdoesnotturnon
1-Checkallfuses.
2-Checkallconnections.
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 +12voltandremoteleads tolocalizetheproblem.
Noiseproblems
Systemnoisecanbedividedintotwocategories,hiss,andelectricalinterference.
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-Anothermajorproblemthatcancauseexcessivehiss,is anoisyheadunit-unplugtheamplifierinputRCAcables,andifthehiss levelreduces,thesourceunitis atfault.
Electricalinterference
The inside ofanautomobile is a veryhostile electricalenvironment.The multitude ofelectricalsystems, suchas the ignitionsystem, alternator, fuelpumps, airconditioners,
tomentionjusta few, create radiatedelectricalfields, as wellas noise onthe +12voltsupplyandground. Remembertoisolate the problem-firstunplugamplifierinputRCA
cables,ifthenoiseis stillpresent,checkthespeakerleads,ifnot,plugtheRCA’s back,andinvestigatethesourcedrivingtheamplifier,onecomponentatatime.
Atickingorwhine thatchangeswith engineRPM:
1-This problemcouldbecausedbyradiationpickupofRCAcables tooneartoafuelpumporadistributor,forinstance,-relocatecables.
2-Checkthattheheadunitgroundis connectedstraighttothevehiclechassis, anddoes notusefactorywiringforground.
3-Trytosupplytheheadunitwithaclean+12voltsupplydirectlyfromthebattery+,insteadofusingasupplyfromtheindashwiring/fusebox.
Aconstantwhine:
This typeofnoisecanbemoredifficulttopinpoint,butis usuallycausedbysomekindofinstability,causingoscillations inthesystem.
1-Checkallconnections,especiallyforgoodgrounds.
2-Makesurethatnospeakerleads areshortingtoexposedmetalonthevehiclechassis.
3-RCAcables arenotorious fortheirproblematicnature,socheckthatthesearegood,inparticulartheshieldconnections.
11
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CRUNCH
SERIES
Maxxsonics Limited Warranty
As the manufacturer of Maxxsonics, Autotek, Crunch, MB Quart 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.
12
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