Maxxsonics PZI325.1, PZI175.4, PZI550.5, PZI100.4, PZI1000.1 User Manual
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POWERZONE PZi AMPLIFIERS
Crunch is proud to introduce the finest high end car audio products available and would like to thank you for your continued support.
The PowerZone Series range of products have been designed to a very high level of performance, with features unavailable in any other
products.
All of the amplifiers have variable crossovers built in, with added touches such as subsonic filter, bass equalization and a bass remote control
module option that allows bass control from with in reach of the drivers seat.
To insure years of listening pleasure, all amplifiers have a built in diagnostic mode that will detect shorted speaker leads, low impedance,
dangerous high temperatures, DC shorts and will shut down the amp to help prevent serious damage.
General Installation Procedure.........................................................................................................................................................1
Amplifier Feature Descriptions..........................................................................................................................................................2
PZi100.2 / PZi250.2 / PZi325.1 / 2-CHANNEL AMPLIFIER APPLICATIONS.............................................................................3-4
Full range stereo / Full range mono / 2 way active with mono bass using two 2 channel models
PZi100.4 / PZi125.4/ PZi175.4 / 4-CHANNEL AMPLIFIER APPLICATIONS..............................................................................5-6
4, 3 and 2 channel full range / 2 way active, with mono bass /
front/rear high pass using a 2 channel model for mono sub bass
PZi1000.1 / PZi1500.1 / PZi2000.1D / PZi3000.1D/ 1-CHANNEL AMPLIFIERS APPLICATIONS...................................................7
Basic mono amplifier application
PZi550.5 / 5 CHANNEL AMPLIFIER FEATURE DESCRIPTION AND APPLICATIONS.....................................................................8
Features and Specifications..............................................................................................................................................................9
Setting Up Systems After Installation For Best Performance............................................................................................................10
Troubleshooting and Diagnostics....................................................................................................................................................11
Product Warranty............................................................................................................................................................................12
The contents of this manual may not be reproduced or copied with out the
written consent of MAXXSONICS USA, Inc.
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.
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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.
! 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.
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 X-OVER slide switch selects the internal crossover functions:
-The input signal is routed directly to the LINE OUT RCA jacks, regardless of the X-OVER setting
simplifying daisy chaining of amplifiers.
-HPF: Selects the built in HIGH PASS filter, variable from 60 Hz to 1.2kHz.
-FULL: Bypasses all crossovers for full frequency range operation.
-LPF: Selects the built in LOW PASS , variable from 30 Hz to 250Hz.
MODE: The mode switch allows you to choose Stereo for full range 2 channel operation or MONO
for bridging operation
HIGH INPUT: If your radio/CD player does not have unbalanced (RCA) outputs, you can use the
HIGH level (wire) inputs.
LINE INPUT: The line input accepts unbalanced (RCA) inputs from 0.2V to 5V.
LINE OUTPUT: The line output passes through signal from the line inputs which allows you to daisy
chain multiple amplifiers from one signal.
The 4 channel amps have the same features as the 2 channel models accept that there are 2 sets of
controls.
1 set for channels 1 & 2 and 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.
The X-OVER slide switch selects the internal crossover functions:
-The input signal is routed directly to the LINE OUT RCA jacks, regardless of the X-OVER setting
simplifying daisy chaining of amplifiers.
-HPF: Selects the built in HIGH PASS filter, variable from 60 Hz to 1.2kHz.
-FULL: Bypasses all crossovers for full frequency range operation.
-LPF: Selects the built in LOW PASS , variable from 30 Hz to 250Hz.
MODE: The mode switch allows you to choose Stereo for full range 2 channel operation or MONO
for bridging operation
HIGH INPUT: If your radio/CD player does not have unbalanced (RCA) outputs, you can use the
HIGH level (wire) inputs.
LINE INPUT: The line input accepts unbalanced (RCA) inputs from 0.2V to 5V.
LINE OUTPUT: The line output passes through signal from the line inputs which allows you to daisy
chain multiple amplifiers from one signal.
PZi100.2 / PZi250.2 / PZi325.2 2-CHANNEL AMPLIFIERS
L L
R R
LINE OUT LINE INPUT
LEVEL BASS EQ HPF LPF
+ - gnd - +
HI INPUT
5V 0.2V 0dB 12dB 60Hz 1.2KHz 30Hz 250Hz
X-OVER MODE
FULL LPF HPF MONO STEREO
Note that the LOW PASS signal is MONO.
-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
-EQ is also switched in.
PZi100.4 / PZi125.4 / PZi175.4 4-CHANNEL AMPLIFIERS
CHANNEL 3 / 4
LINE INPUT
R
L
CH3/4 CH1/2
CH3 CH4
+ - gnd - +
HI INPUT
+ - gnd - +
CH1 CH2
LEVEL BASS EQ HPF LPF
5V 0.2V 0dB 12dB 60Hz 1.2KHz 30Hz 250Hz
LEVEL BASS EQ HPF LPF
5V 0.2V 0dB 12dB 60Hz 1.2KHz 30Hz 250Hz
CHANNEL 1 / 2
X-OVER
FULL LPF HPF
X-OVER
FULL LPF HPF
Note that the LOW PASS signal is MONO.
-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
-EQ is also switched in.
MODE
2 3 4
CHANNEL
R
L
LINE OUTPUT
-The LINE INPUT signal is routed directly to the LINE OUT RCA jacks, regardless of the X-OVER
setting simplifying daisy chaining of amplifiers.
-SUBSONIC: Allows you to adjust the crossover filter from 15Hz to 55Hz.
-LPF: Allows yo to adjust the LOW PASS crossover filter from 40Hz to 150Hz.
MODE: The mode switch allows you to choose Stereo for full range 2 channel operation or MONO for
bridging operation
LEVEL: Adjusts the input sensitivity from 0.2 volts to 5 volts.
BASS EQ: The Bass EQ is adjustable from 0db to 12dB.
REMOTE: This is the input jack for the under-dash bass remote module.
LINE INPUT: The line input accepts unbalanced (RCA) inputs from 0.2V to 6V.
LINE OUTPUT: The line output passes through signal from the line inputs which allows you to daisy
chain multiple amplifiers from one signal.
LINE INPUT: Accepts unbalanced RCA inputs from 0.2 volts to 9 volts.
LINE OUTPUT: The unbalanced RCA outputs are set the same as the CROSSOVER switch on the
side mount control.
BALANCED INPUT: Accepts balanced line inputs from 0.4 volts to 12 volts for the optional MMBLD1 balanced line driver.
LEVEL: The input level control allows you to match the amplifier input sensitivity to the output level of
the RADIO/CD source from 0.2 volts to 9 volts when using unbalanced (RCA) and 0.2 volts to 18
volts with the balanced input.
PHASE: The Phase shift is fully adjustable from 0 to 180 degrees.
REMOTE: The RJ45 Remote jack accepts the Bass Remote Module.
BASS EQ: The Bass Boost is fully adjustable from 0 to 10db at 45Hz.
SUBSONIC: The variable Subsonic filter is fully adjustable from 15Hz to 35Hz.
LOWPASS: The built-in low pass frequencies are fully variable from 35 to 250Hz.
POWER: Indicates that the amp has power, ground and remote turn-on input via a green L.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
shooting guide in the back of the manual for details.
PZi1000.1 / PZi1500.1 1-CHANNEL MONO BLOCK AMPLIFIERS
6V 0.2V
OUTPUT INPUT
L
R
POWER
PROTECT
REMOTE
CONTROL
BASS EQ
0dB 12dB
SUB
SONIC
15Hz
55Hz
LPF
40Hz 150Hz
LEVEL
The mono amps are capable of 4, 2 & 1-Ohm loads.
Operating the amp below 1-Ohm can cause damage to the
amp not covered in the warranty.
PZi2000.1D / PZi3000.1D 1-CHANNEL D-CLASS MONO AMPLIFIERS
INPUT OUTPUT BALANCED LEVEL PHASE REMOTE BASS EQ SUBSONIC LOW PASS PWR
L
R
INPUT
L
9V 0.2V 0 180 0dB 10dB 15 35Hz 35 250Hz PRO
R
The mono amps are capable of 4, 2 & 1-Ohm loads.
Operating the amp below 1-Ohm can cause damage to the
amp not covered in the warranty.
L
R
2
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.
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.
LINE OUT LINE INPUT
R R
L L
FULL RANGE
STEREO LINE INPUT
+ - gnd - +
HI INPUT
LEVEL BASS EQ HPF LPF
5V 0.2V 0dB 12dB 60Hz 1.2KHz 30Hz 250Hz
FULL LPF HPF MONO STEREO
X-OVER MODE
FULL RANGE MONO
This application illustrates the basic mono bridging method for all
POWERZONE 2 channel amplifiers.
4. Line Level:
Refer to the section “Setting up systems after installation for best
performance”.
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.
BRIDGED
SPEAKER OUTPUT
LEFT RIGHT
- + - +
POWER
PROTECT
POWER INPUT FUSE
GND REM +12V
FULL RANGE
SPEAKERS
TO BATTERY + 12 volts VIA FUSE
REMOTE TURN-ON
CHASSIS GROUND
Switch setting checklist:
- The AMPLIFIER X-OVER switch must be in the FULL position.
Interconnect cable checklist:
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. Do not be tempted to connect the
Important:
hot, or positive outputs, from any source together to obtain a mono signal, as
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.
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 Yadapter 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
LINE OUT LINE INPUT
R R
L L
+ - gnd - +
FULL RANGE
MONO LINE INPUT
VIA Y-ADAPTER
FROM MONO SOURCE
HI INPUT
LEVEL BASS EQ HPF LPF
5V 0.2V 0dB 12dB 60Hz 1.2KHz 30Hz 250Hz
FULL LPF HPF MONO STEREO
X-OVER MODE
BRIDGED
SPEAKER OUTPUT
LEFT RIGHT
- + - +
POWER
PROTECT
TO BATTERY + 12 volts VIA FUSE
POWER INPUT FUSE
GND REM +12V
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 this connector for 2 CH amplifiers
GRAY: CH 1 Speaker Input +
BROWN: CH 1 Speaker input Black: Chassis Ground
GREEN: CH 2 Speaker Input White: CH 2 Speaker Input +
Use both connectors for 4 CH amplifiers
ORANGE: CH 3 Speaker Input +
PINK: CH 3 Speaker input Black: Chassis Ground
BLUE: CH 4 Speaker Input YELLOW: CH 4 Speaker Input +
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