MB QUART PAB 2100 manual PAB 4100 4-Channel Amplifier, Channel full range system

AMPLIFIER APPLICATIONS

PAB 4100 4-Channel Amplifier

4 channel full range system

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

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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 MB QUART 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 sys- tem, 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 out- puts, 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 - as shown.

Switch setting checklist:

-1/2CH X-OVER: FULL

-3/4CH X-OVER: FULL

Crossover frequency control checklist:

Channels 1/2:	Channels 3/4:
- HI PASS: N/A	- HI PASS: N/A
- LOW 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”

Minimum final loudspeaker impedances:

-2 ohm per channel in stereo mode.

-4 ohm mono bridged.

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