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 channel full range units.

Interconnect cable checklist:

- Connect the four inputs of the amplifier to a Radio/CD with quality RCA cables.

Switch setting checklist:

-1/2CH X-OVER: FULL

-3/4CH X-OVER: FULL

Crossover frequency control checklist:

Channels 1/2:

-HI PASS: N/A

-LOW PASS: N/A

Channels 3/4:

-HI PASS: N/A

-LOW PASS: N/A

Level control checklist:

-Refer to the section “Setting up systems after installation for best performance”

Minimum final loudspeaker impedances: - 2-Ohms per channel.

FULL RANGE

SPEAKERS

FULL RANGE STEREO LINE INPUTS

CH3/4

 

L

 

 

 

 

 

 

 

 

LINE

 

CH1/2

 

 

 

 

INPUT

 

CH1 2

 

+ - gnd +

HI INP

+ - gnd +

CH3 CH4

 

5V 0.2V

 

LEVEL

5V 0.2V

LEVEL

 

0dB 12dB 60Hz 1.2KHz CHANNEL 1 / 2

 

BASS EQ HPF

0dB 12dB 60Hz 1.2KHz

BASS EQ HPF

CHANNEL 3 / 4

30Hz 250Hz

 

LPF

30Hz 250Hz

LPF

 

FULL LPF HPF

 

X-OVER

FULL LPF HPF

 

X-OVER

 

LINE

 

 

CHANNEL

2 3 4

MODE

 

OUTPUT

L

 

R

 

 

OUTPUT

RIGHT

 

-

3/4SPEAKER

LEFT

 

+

CH

-

FUSE

 

POWER INPUT GND REM +12V

 

OUTPUT

-

 

RIGHT

 

-

SPEAKER½

LEFT

 

+

CH

 

POWER

PROTECT

B IDGE

B IDGE

TO BATTERY + 12 Volts VIA FUSE

REMOTE TURN-ON

CHASSIS GROUND

2 or 3 CHANNEL FULL RANGE SYSTEM

Here we show how to use the 4 channel amplifiers as full range 2 or 3 channel units by taking advantage of the mono bridging capability of all Crunch amplifiers.

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 to also mono bridge channel pair 1 / 2.

Interconnect cable checklist:

- Connect the inputs of channel pair 1/2 to a suitable stereo source, e.g. a head unit

with good quality RCA cables.

- 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, 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

Channels 1/2:

-HI PASS: N/A

-LOW PASS: N/A

Channels 3/4:

-HI PASS: N/A

-LOW PASS: N/A

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.

Level control checklist:

-Refer to the section “Setting up systems after installation for best performance”

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 - as shown.

Switch setting checklist:

- 1/2CH X-OVER: FULL

- 3/4CH X-OVER: FULL

Crossover frequency control checklist:

Minimum final loudspeaker impedances:

-2-Ohms per channel in stereo mode.

-4-Ohms mono bridged.

MONO

OR SUB BASS

SPEAKER

STEREO FULL RANGE

 

CH3/4

L

 

 

 

 

 

 

 

 

LINE

 

 

CH1/2

 

 

 

INPUT

 

1 STEREO

C CH2

+ - gnd - +

I INPUT

- gnd - +

CH3 CH4

 

1 MONO

5V 0.2V

LEVEL

 

5V 0.2V

LEVEL

 

FULL RANGE

 

 

0dB 12dB60Hz1.2KHz

BASS EQHPF

 

0dB 12dB60Hz1.2KHz

BASS EQHPF

CHANNEL3/4

CHANNEL1/2

 

LINE INPUTS

 

 

 

 

 

 

 

30Hz 250Hz

LPF

 

30Hz 250Hz

LPF

 

 

FULL LPF HPF

X-OVER

 

FULL LPF HPF

X-OVER

 

 

LINE

 

2 3 4 CHANNEL

MODE

 

 

OUTPUT

L

 

R

 

 

 

 

 

 

 

OR HIGHS

OUTPUT

 

 

 

 

SPEAKERS

 

 

+

 

 

 

RIGH

 

 

SPEAKER3/4

 

 

-

BRIDGED

 

 

LEFT+-

 

 

 

-

 

 

CH

 

 

 

 

TO BATTERY + 12 Volts VIA FUSE

 

 

 

 

 

 

 

 

FUSE

 

 

 

 

 

 

 

 

POWERINPUT REMGND+12V

 

 

 

REMOTE TURN-ON

 

 

 

 

 

 

 

 

 

 

CHASSIS GROUND

 

 

 

 

OUTPUT

 

 

-

 

 

SPEAKER½

 

 

RIGHT+

IDGE

 

 

LEFT

 

 

 

+

 

 

CH

 

 

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

POWER PROTECT

 

 

5

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Maxxsonics PZI1000.1, PZI325.1, PZI175.4, PZI550.5, PZI1500.1, PZI250.2, PZI100.4, PZI2000.1D Or 3 Channel Full Range System