Radio Shack XL-400 User Manual

Connecting Inputs

4. Use a screwdriver to connect the sub-

woofer’s positive (+) wire to the ampli-
fier’s

CH3 (+)

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’s

CH3 (+)

terminal, connect the

subwoofer’s negative (–) wire to the
amplifier’s

CH3 (–)

terminal.

Connecting Two Unbridged Speakers and One Bridged Subwoofer

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.

6. Make sure the

BRG/ST

switch on the

right

side of the amplifier is set to

then set the

BRG/ST

switch on the

left

side of the amplifier to

BRG

Subwoofer

CH2 Front
Right Speaker

CH1 Front
Left Speaker

12-2018.fm Page 15 Friday, May 12, 2000 12:46 PM