Stewart Audio AV50-1 - Manual (Page 7)

2.6.3 Bridge-Mono Operation
Your Stewart AV-Series amplifier has the option to run as a dual-mode
(stereo) channel amplifier as well as a more powerful single (mono)
channel amplifier. This mode is known as bridge-mono and requires a
different wiring setup than stereo or mono operation. The difference
between standard mono operation is that the amplifier will only be
powering one speaker. This allows for more wattage (100W @ 8Ω) to
be provided to a single output channel.
Input Connections
The input signal in bridge-mono mode should be connected to Channel
2 if using RCA inputs. Do not connect any input to Channel 1 of the
amplifier. If using the 3.5mm stereo input, the right (ring) channel’s sig-
nal will be used.
Output Connections
Prepare the speaker leads as described in section 2.5. The speaker
leads should be attached to the positive terminals of both channels
(terminals 1 and 4). Nothing should be attached to speaker terminal 2
and 3. See diagram for further clarification.
Put Amplifier into Bridge-Mono Mode
Slide the rear-panel switch marked Bridge/Mono/Stereo to the Bridge
position. Be sure the power button is off (out), then plug the line cord
into a grounded AC outlet.
The amplifier is now ready for Bridge-mode operation.
CAUTION: To prevent loudspeaker damage, ensure that
the speaker is rated for the higher-wattage output sup-
plied in Bridge-Mono mode.
+ - - +
+ -
Phoenix-Style Connector
(Rear of AV50)
Bridge-Mono Wiring Setup
Channel 2
Channel 1
- OR -
Input Stage
Output Stage
Stereo In NOT USED
*Note: Only the right channel (tip) will be used
DO NOT USE
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