Maxxsonics Q4.80 / Q4.150, Channel Amplifiers, Channel Full Range Stereo, Or 3 Channel System

Q4.80 / Q4.150

4-Channel Amplifiers

4 Channel Full Range Stereo:

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: HP-FULL

-MULTIPLIER FREQUENCY: X1

-FILTER SLOPE: 12dB

-3/4CH X-OVER: HP-FULL

INPUT MODE: 4CH since 2 sets of RCA’s are connected.

Control checklist:

- Refer to the section “Settings for Best Performance”

Minimum final loudspeaker impedances: - 2 ohm per channel.

CH4	CH3
	INPUT
CH2	CH1

OUT

CLIP INDICATOR		CLIP INDICATOR
	AMBER-			AMBER-
GREEN-	SOFT CLIP	GREEN-		SOFT CLIP
PRE CLIP	RED-	PRE CLIP		RED-
	HARD CLIP			HARD CLIP
LEVEL		LEVEL
9V	0.2V	9V		0.2V
BASS BOOST		BASS BOOST
0dB	12dB	0dB		12dB
MULTIPLIER		BASS FREQUENCY
FREQUENCY
		30Hz		80Hz
X15	X1	HIGH PASS
FILTER SLOPE
6dB	12dB	15Hz		1KHz
CHANNELS 1&2		CHANNELS 3&4
HIGH PASS		LOW PASS
(x1) 20Hz	300Hz	40Hz		4.5KHz
(x15) 300Hz	4.5KHz	CROSSOVER
CROSSOVER
DUPE	HP-FULL	LP-BP	LP-BP HP-FULL
(3&4)		MONO STEREO
PROTECT		INPUT MODE
POWER		4CH		2CH

		-
		Ch4
OUTPUT	BRIDGED	+ -
		+Ch3
SPEAKER		-+-Ch2
	BRIDGED
		Ch1
FUSE		+
POWER INPUT

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 MB Quart amplifiers. 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 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 Ch3 +, and its negative terminal to Ch4 - as shown.

Switch setting checklist:

-1/2CH X-OVER: HP-FULL

-MULTIPLIER FREQUENCY: X1

-FILTER SLOPE: 12dB

-3/4CH X-OVER: LP-BP MONO

INPUT MODE: 4CH, Stereo Left and Right to CH1&2 and MONO to CH3&4

Control checklist:

-Refer to the section “Settings for Best Performance” Minimum final loudspeaker impedances:

-2 ohm per channel in stereo mode.

-4 ohm mono bridged.

MONO LINE INPUT

STEREO LINE INPUT

4

CH4	CH3
	INPUT
CH2	CH1

OUT

CLIP INDICATOR		CLIP INDICATOR
	AMBER-			AMBER-
GREEN-	SOFT CLIP	GREEN-		SOFT CLIP
PRE CLIP	RED-	PRE CLIP		RED-
	HARD CLIP			HARD CLIP
LEVEL		LEVEL
9V	0.2V	9V		0.2V
BASS BOOST		BASS BOOST
0dB	12dB	0dB		12dB
MULTIPLIER		BASS FREQUENCY
FREQUENCY
		30Hz		80Hz
X15	X1	HIGH PASS
FILTER SLOPE
6dB	12dB	15Hz		1KHz
CHANNELS 1&2		CHANNELS 3&4
HIGH PASS		LOW PASS
(x1) 20Hz	300Hz	40Hz		4.5KHz
(x15) 300Hz	4.5KHz	CROSSOVER
CROSSOVER
DUPE	HP-FULL	LP-BP	LP-BP HP-FULL
(3&4)		MONO STEREO
PROTECT		INPUT MODE
POWER		4CH		2CH

			-
			Ch4
OUTPUT		BRIDGED	+ -
			+Ch3
SPEAKER			-+-Ch2
		BRIDGED
			Ch1
			+
	FUSE
POWER INPUT			GND REM BATT+12V