Radio Shack 85 - Manual (Page 17)

17
Connecting Two Speakers (Bridged Connection)
If you are connecting only two speakers (left and right), you can add (bridge) the
power output of two channels (front and back) to produce the combined power
of both from each of the two speakers.
Caution: This is a bridged connection that produces 170 watts per speaker. Use
this connection only if you have high quality speakers capable of handling a pow-
er output of 170 Watts.
1. Connect one end of a speaker wire’s marked conductor to the amplifier’s
+
CH1 (
+
Bridged) terminal and the other end to the left speaker’s positive (
+
)
terminal.
2. Connect the unmarked conductor’s end (in the same speaker wire) to the
amplifier’s CH2
+
( Bridged
−
) terminal and the other end to the left
speaker’s negative (
−
) terminal.
3. Connect one end of a second speaker wire’s marked conductor to the
amplifier’s
+
CH3 (
+
Bridged) terminal and the other end to the right
speaker’s negative (
−
) terminal.
4. Connect the unmarked conductor’s end (in the same speaker wire) to the
amplifier’s CH4
+
( Bridged
−
) terminal and the other end to the right
speaker’s positive (
+
) terminal.
5. Push in the right BRG/ST (Bridged/Stereo) switch to the BRG position to
bridge the front speakers (CH1 and CH2) .
6. Push in the left BRG/ST (Bridged/Stereo) switch to the BRG position to
bridge the rear speakers (CH3 and CH4) .
12-1977.fm Page 17 Tuesday, July 13, 1999 10:07 AM