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IMPORTANT
When operating the amplifier in bridged mode and using an output device with
single-ended RCA cables, be sure to remove the shorting pin from the/eft balanced
XLR input (4).
Reconfiguring the KAV-250a/3 for Bridged Operation
See Figure 6 on page 19
Tools needed: T-15 Torx wrench and two ribbon connection cables
1. Turn the KAV-250a/3 off by pressing the power button (14) on the front panel. The
blue power LED (15) extinguishes. Unplug the AC power cord from the IEC power
connector (29) on the back panel.
2. Using the T-15 Torx wrench, remove the 12 screws that secure the amplifier cover.
Carefully remove the cover.
3. Locate the small PC board at the rear of each amplifier channel and jumper pins
labeled J4, J5, and J6.
4. Option 1: To bridge left and center amplifier channels, connect one end of the
ribbon connection cable to jumper pin J4 on the left amplifier channel (closest to the
power supply). The cable snaps into place. Connect the other end of the ribbon
connection cable to jumper pin J6 on the center amplifier channel.
Option 2: To bridge center and right amplifier channels, connect one end of the
ribbon connection cable to jumper pin J4 on the center amplifier channel. Connect
the other end of the ribbon connection cable to jumper pin J6 on the right amplifier
channel.
5. Replace cover (slide the front panel end in first).
Using the T-15 Torx wrench,
secure the 12 screws.
The KAV-250aJ3 amplifier is now ready for bridged operation.
Connecting the Bridged KAV-250a/3
See Figure 4 on page 11
1. When the left and center amplifier channels are bridged (Option 1), connect the
output cable from the output device to the center balanced XLR (17) or single-ended
RCA (20) input.
Connect the positive loudspeaker lead (red) to the positive binding post on the
center amplifier channel (23). Connect the negative loudspeaker lead (black) to
positive binding post of the left amplifier channel (24).
KAV-250a and KAV-250a/3 Amplifiers
21
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