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6 amp.1640 User Guide

Installation – setup and options

Input selection

Caution: Only change DIP switch positions when the amplifier is turned off. Each

channel is capable of delivering the sources from a dedicated Line-In or the

Global-Inputs by changing the Line-In/ Global In DIP switch.

Power connection

Plug the supplied power cord into the amplifier and to a polarized wall outlet or

appropriate surge protector.

Note: There is no power button on the amp.1640. The unit automatically powers

up when you plug it into an outlet.

Caution: Do not plug the amplifier’s power cord into a switched outlet, as is

featured on some surround receivers. If you wish to have the amplifier turn on

when the receiver is powered up, use the 12 V trigger jack on the rear of the unit.

Bridging channels

When greater power capacity is required, such as noisy outdoor environments,

you can combine, or bridge, two amplifier channels into a single channel. The

bridged channel is driven at four times the power of the individual channel. When

bridged, the single bridge output is driven at 160 watts at 8Ω, due to the bridging

process. Therefore, only an 8Ω speaker load should be used. You must not

parallel two 8Ω speakers on a single bridged output, as the amplifier actually

sees this as a 2Ω load.

Notes

• When bridging, only the right input is used.

• You cannot use bridge and global on the same channel, since only a bridged

channel sees the right channel input.

• Do not connect more than one speaker to the outputs on a bridged channel.

• Maintain an 8Ω minimum speaker load when using bridge mode. Due to the

bridging process, the amplifier actually sees the 8Ω speaker as a 4Ω load per

channel.

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