Crunch P1-1050.2, P1-650.2, P1-1050.1 HI Pass N/A, LOW Pass N/A, 2CH X-OVER Full, 4CH X-OVER Full

P1-650.4 / P1-1050.4 / P1-1650.4 4-CHANNEL AMPLIFIER APPLICATIONS

4 CHANNEL FULL RANGE SYSTEM

Here we show how to use the 4 channel amplifiers as straight forward discrete 4	- HI PASS: N/A
channel full range units. The MODE switch should be in 4CH.	- LOW PASS: N/A
Interconnect cable checklist:	Channels 3/4:
- Connect the four inputs of the amplifier to a Radio/CD with quality RCA cables.	- HI PASS: N/A
Switch setting checklist:	- LOW PASS: N/A
- 1/2CH X-OVER: FULL	Level control checklist:
- 3/4CH X-OVER: FULL	- Refer to the section “Setting up systems after installation for best performance”
Crossover frequency control checklist:	Minimum final loudspeaker impedances:
Channels 1/2:	- 2 ohm per channel.

FULL RANGE

STEREO LINE

INPUTS

				LINE OUT
	FULL LPF HPF	X-OVER	FULL LPF HPF	X-OVER
	30Hz 250Hz	LPF	30Hz 250Hz	LPF
CHANNEL 3 / 4	60Hz 12KHz 0dB 9dB	HPF BASS EQ	60Hz 12KHz 0dB 9dB	HPF BASS EQ	CHANNEL 1 / 2
	6V 0.2V	LEVEL	6V 0.2V	LEVEL
			4 2	MODE
		Ch1		Ch2
		Ch3		LINE INPUT
				Ch4

POWERONE

GND REM +12VPOWER CH 3/4 SPEAKER OUTPUTCH 1/2 SPEAKER OUTPUT

- CH1

-

CH2 -+

-

CH3 +

- CH4

PROTECT

BRIDGEDBRIDGED

2 or 3 CHANNEL SYSTEM

Here we show how to use the 4 channel amplifiers as a 3 channel unit 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:

-MODE: Set at 4

-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. 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 output for bridged channels 3/4.

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 CH4 +, and its negative terminal to CH3 - as shown.

Switch setting checklist:

-1/2CH X-OVER: FULL

-3/4CH X-OVER: LPF

Crossover frequency control checklist:

Channels 1/2:

-HI PASS: N/A

-LOW PASS: N/A

Channels 3/4:

-HI PASS: N/A

-LPF: 11 o’clock

TIP: If you are using the mono sub bass output of an active crossover, there is nothing wrong with switching in the low pass filter in these amplifiers for a steeper low pass rolloff.

Level control checklist:

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

Minimum final loudspeaker impedances:

-2 ohm per channel in stereo mode.

-4 ohm mono bridged.

FULL RANGE

STEREO LINE

INPUTS

MONO LINE INPUT

(Unless using procedure listed above for 3ch)

4

				LINE OUT
	FULL LPF HPF	X-OVER	FULL LPF HPF	X-OVER
	30Hz 250Hz	LPF	30Hz 250Hz	LPF
CHANNEL 3 / 4	60Hz 12KHz 0dB 9dB	HPF BASS EQ	60Hz 12KHz 0dB 9dB	HPF BASS EQ	CHANNEL 1 / 2
	6V 0.2V	LEVEL	6V 0.2V	LEVEL
			4 2	MODE
		Ch1		Ch2
		Ch3		LINE INPUT
				Ch4

POWERONE

GND REM +12VPOWER CH 3/4 SPEAKER OUTPUTCH 1/2 SPEAKER OUTPUT

- CH1

-

CH2 -

CH3 +

- CH4

PROTECT

BRIDGEDBRIDGED

MONO

SUBWOOFER