TIP:
2Ω Output loads may cause the amplifier to behave
erratically, causing protection circuits to activate as well as
forcing the amplifier to operate at high temperatures. It is
not advisable to load the
amplifier’s output below 4Ω.
TIP:
4Ω Output loads may cause the amplifier to behave erratically,
causing protection circuits to activate as well as forcing the amplifier
to operate at high temperatures. It is not advisable to load the
amplifier’s output below 8Ω.
Connecting the amplifier outputs to oscilloscopes or other test equipment while the
amplifier is in Bridge Mono mode may damage both the amplifier and the test equipment.
PAGE 7
OUTPUT MODE SELECTION
The three-position, recessed output mode selection switch
(17) located on the rear panel configures the
amplifier’s
outputs to either Stereo, Parallel or Bridge-Mono mode.
Factory default is configured to Stereo Mode.
STEREO MODE SELECTION
In Stereo Mode, both Channels A and B operate
independently, with their input attenuators
(Volume Controls 2 / 3) controlling their respective output
levels. Signal applied at Channel
A’s
input connector (14)
produces an output at Channel
A’s
output connector (18),
whilst signal applied at Channel
B’s
input connector (15)
produces an output at Channel
B’s
output connector (19).
The recommended output load impedance for stereo
operation is
16Ω
-
4Ω
per channel.
PARALLEL MODE SELECTION
In Parallel Mode, an input signal applied to Channel
A’s
input connector (14) will be amplified and appear at both
Channels A and B output connectors (18 / 19). Outputs A
and B will still be independently controlled by their
respective input attenuators (Volume Controls 2 / 3).
The recommended output load impedance for Parallel
operation is 16Ω
-
4Ω per channel.
BRIDGED MONO MODE SELECTION
In Bridged Mono Mode, the amplifier is converted from
a two output channel amplifier to a single Mono output
amplifier. The output power of the converted mono output
amplifier is doubled, making it a very powerful, single
channel mono block amplifier.
An input signal applied to Channel
A’s
input connector (14)
will result in an amplified mono output on Channel
A’s
output connector (18) with the following pinout
configuration.
1+ Positive Speaker Output
1- Not Used
2+ Negative Speaker Output
2- Not Used
The input attenuator (Volume Control) of Channel A (2)
controls the output level.
Input and Output connectors as well as the input
attenuator (Volume Control) of Channel B are not used,
and left open (Not connected)
The recommended output load impedance for Bridge
Mono operation is
16Ω
-
8Ω.
Use extreme caution when operating the amplifier in
Bridge Mono Mode. Never ground either side of the
speaker cable / output connection as both sides are
“hot”
and are at different voltages with respect to ground.
TIP:
2Ω Output loads may cause the amplifier to behave
erratically, causing protection circuits to activate as well as
forcing the amplifier to operate at high temperatures. It is
not advisable to load the
amplifier’s output below 4Ω.