Radio Shack XL-400 manual

CH3 (+)

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4.Use a screwdriver to connect the sub- woofer’s positive (+) wire to the ampli- fier’s CH3 (+) or CH4 (+) terminal.

5.Repeat Step 4 to connect the sub- woofer’s negative (–) wire to the ampli- fier’s negative (–) terminal for the same

channel you connected in Step 4. For example, if you connected the sub- woofer’s positive (+) wire to the ampli-

fier’sterminal, connect the subwoofer’s negative (–) wire to the amplifier’s CH3 (–)terminal.

Connecting Two Unbridged Speakers and One Bridged Subwoofer

CH1 Front	CH2 Front
Left Speaker	Right Speaker

Note: CH4 (+) is used as a negative (–) termi- nal for a bridged connection.

1.Use a screwdriver to connect the left front speaker’s positive (+) wire to the amplifier’s CH1 (+) terminal.

2.Use a screwdriver to connect the left front speaker’s negative (–) wire to the amplifier’s CH1 (–)terminal.

3.Repeat Steps 1–2 to connect the right front speaker’s positive (+) and negative

(–)wires to the amplifier’s CH2 (+) and CH2 (–)terminals.

4.Use a screwdriver to connect the sub- woofer’s positive (+) wire to the ampli- fier’s CH3 (+) terminal.

5.Repeat Step 4 to connect the sub- woofer’s negative (–) wire to the ampli- fier’s CH4 (+) terminal.

Subwoofer

6.Make sure the BRG/ST switch on the right side of the amplifier is set to ST, then set the BRG/ST switch on the left side of the amplifier to BRG.