Krell Industries Reconfiguringthe KAV-250a/3forBridged Operation, See on page19, See on page11

IMPORTANT

Whenoperating the amplifier in bridged modeandusing an output device with single-ended RCAcables, be sure to removethe shorting pin from the/eft balanced XLRinput (4).

Reconfiguringthe KAV-250a/3for Bridged Operation

See Figure 6 on page19

Tools needed:T-15 Torx wrenchand two ribbon connection cables

1.Turn the KAV-250a/3off by pressing the powerbutton (14) on the front panel. The blue powerLED(15) extinguishes. Unplugthe ACpowercord from the IEC power connector(29) on the backpanel.

2.Usingthe T-15 Torx wrench,removethe 12 screwsthat securethe amplifier cover. Carefully removethe cover.

3.Locatethe small PCboard at the rear of eachamplifier channelandjumperpins labeled J4, J5, andJ6.

4.Option1: Tobridge left andcenter amplifier channels,connectoneendof the ribbon connectioncable to jumperpin J4 on the left amplifier channel(closest to the powersupply). Thecable snapsinto place. Connectthe other endof the ribbon connectioncable to jumperpin J6 on the center amplifier channel.

Option2: Tobridge center andright amplifier channels,connectoneendof the ribbon connectioncable to jumperpin J4 on the center amplifier channel.Connect the other endof the ribbon connectioncable to jumperpin J6 on the right amplifier channel.

5.Replacecover(slide the front panelendin first). Usingthe T-15Torx wrench, secure the 12 screws.

The KAV-250aJ3amplifier is nowready for bridged operation.

Connectingthe Bridged KAV-250a/3

See Figure 4 on page11

1.Whenthe left andcenter amplifier channelsare bridged (Option 1), connectthe output cable from the output device to the center balancedXLR(17) or single-ended RCA(20) input.

Connectthe positive loudspeakerlead (red) to the positive binding post on the center amplifier channel(23). Connectthe negativeloudspeakerlead (black) to positive bindingpost of the left amplifier channel(24).

KAV-250aand KAV-250a/3Amplifiers 21