5
Example One: Connecting the Amplifier to an advanced whole-house audio controller, such as the HTD MC-86
Use the Line Outputs on the MC-86 to connect to the Line Inputs on the amplifiers for each zone. We include six 3’
shielded stereo patch cables with the MC-86 for this purpose.
Amplifier Settings
Two side-by-side amplifiers are used for each zone. One side is set to amplify the Right channel of
a stereo signal and the other side is set to amplify the Left side of a stereo signal. In our diagram,
channel 1 is set to amplify the Right channel and channel 2 is set to amplify the Left channel for the
speakers in Zone 1.
Level:
Turn the rotary Level knob all the way clockwise to get the maximum power out of the ampli-
fier. You can set the Level at less than maximum to limit the volume output in a zone (e.g. limit how
loud a child can play his/her music). See “Best Practices” under Level Settings on Page 4 for more
information.
Input Selection Switch:
Set to “Line”.
L, L+R, R Switch:
When the “Line” input is used, this switch is inactive so the setting is irrelevant.
However, you might want to set odd numbered channels to Right (R) and even channels to Left (L)
just to make it easier to recall which Line Output from the MC-86 is being sent to each channel.
Bridge Switch:
Since you are not bridging the two channels, make sure the Bridge Switch is off (far
left position).
See the owner’s manual for the amplifier for instructions on bridging adjacent chan-
nels to achieve even higher power when necessary.
On - Auto On - Trigger Switch:
It is best to set this switch to “On” which will always have the ampli-
fier ready to power an input signal, including the doorbell and paging. Additionally, “Auto On” and
“Trigger” may not always recognize a low-level source signal coming from the MC-86.
Right
Left Right
Left
Right
Left Right
Left Right
Left
3’ Shielded Stereo Patch Cables
Speaker Connections
Right
Left
Right
Left
On
Auto On
Trigger
H
ow to Connect and Use the MA-1235/Ma-1265
