Bridged Mode; Multiple Speaker Loads - Nice PROFICIENT AUDIO PAS-A4100 Installation Manual

Installation Considerations

Bridged Mode

OFF ON CLASS 2 WIRING OFF ON CLASS 2 WIRI
100Hz 100Hz 100Hz
20Hz 20Hz
BRIDGE BRIDGE
3 4
1 2 3
The Proficient PAS-A4100 is bridgeable in pairs, each bridged mode switch allows
you to bridge either channels 1 with 2 or 3 with 4 . The example below is for bridging
channels 1 and 2 . The same procedure can be applied to channel 3 and 4 .
TURN OFF THE AMP BEFORE SWITCHING TO BRIDGE MODE . Set the bridge
mode switch to ON .
In bridged mode, connect the speakers to the channel 1 red terminal and the
channel 2 red terminal . In bridged mode the channel 1's red terminal becomes
positive and the channel 2's red terminal becomes negative .
DO NOT USE THE BLACK NEGATIVE (-) TERMINALS . THE SIGNAL IS AT THE
RED TERMINALS ONLY .
The line level input signal must connect to the channel 1 (channel 3 when bridging
3 and 4) input of the amplifier when using bridged mode . [When in bridged
mode only, the odd channels (channels 1 and 3) need connection since the even
channels are not engaged when in bridge mode] .

Multiple Speaker Loads

The Proficient PAS-A4100 Amplifier is stable into very low impedance loads .
This means you can safely operate up to three 8-ohm speakers per channel
(2 .67 ohm load) directly connected to the amplifier . Note that the 2-Channel
Amplifier does not have on/off speaker switching built in . When the amplifier is
on, so are all of the speakers .
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