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: |
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Switch setting checklist: |
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Refer to the section “Setting up systems after installation for | |||
- 1/2CH | best performance” |
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- 3/4CH | 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
-Connect the mono speaker positive terminal to the LEFT +, and its negative terminal to RIGHT - as shown.
Switch setting checklist:
-1/2CH
-3/4CH
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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