WWW.APART-AUDIO.COM
6
1) Channel 4 unbalanced input on cinch connectors: use the top or bottom cinch connector to apply an
unbalanced signal on channel 4. These connectors are wired in parallel, this means you can use the second
connector as a signal link connector.
2) Channel 3 unbalanced input on cinch connectors: use the top or bottom cinch connector to apply an
unbalanced signal on channel 3. These connectors are wired in parallel, this means you can use the second
connector as a signal link connector. In case of bridge operation of channel 3 and 4, use this connector and
leave channel 4 input unused.
3) Mode switch : enables to switch to normal 2 channel stereo operation, 2 channels mixed and each playing
this mono mix, or single channel bridge mode. In case of bridge mode, only the channel 3 volume control is
used. This is indicated by the bridge led on the front panel.
4) Ground lift switch: use this switch to lift or connect audio ground to safety ground. This can be usefull in case
of hum.
5) Top switch: when pushed in, an active highpass filter at 100 Hz, 12 dB/octave is applied to channels 3 and 4,
when not pushed in, channels 3 and 4 operate as full range channels.
6) Channel 4 speaker binding post: this connector accepts speaker cable as well as 4 mm banana plugs.
Remove the protective cover from the middle of the red/black binding post in case you want to use banana
plugs.
For bridge mode applications, you MUST use the red binding posts only: channel 4 red plug is
bridge mode negative speaker connector.
7) Channel 3 speaker binding post: this connector accepts speaker cable as well as 4 mm banana plugs.
Remove the protective cover from the middle of the red/black binding post in case you want to use banana
plugs.
For bridge mode applications, you MUST use the red binding posts only: channel 3 red plug is
bridge mode positive speaker connector.
8) Mains cable connector: plug the mains cable connector here, this socket also contains a mains fuse holder.
Replace this fuse only with the type as indicated on the rear panel.
9) Channel 2 speaker binding post: this connector accepts speaker cable as well as 4 mm banana plugs.
Remove the protective cover from the middle of the red/black binding post in case you want to use banana
plugs.
For bridge mode applications, you MUST use the red binding posts only: channel 2 red plug is
bridge mode negative speaker connector.
Rear panel layout:
1
2
3
4
5
6
7
8
9
10
11
12
13 14
