Abbingdon Music Research AM-777 Owner's Manual - page 9
9
R1. SPADE/BANANA outputs
: for connection of standard termination speaker cables.
R2. USB input:
to allow direct connection to a computer.
R3. HIFI/PRO
: to allow for a source with transformer balanced output.
R4. POWER
: to switch on mains electricity to the AM-777.
R5. 115V/230V
: to switch to the correct local mains voltage.
R6. INPUT 1
: shared XLR and RCA input
R7. INPUTS 2-4
: RCA inputs
R8. IEC power connector
: for the connection of a mains power cable to the AM-777.
R9. Preamplifier output
: to drive other amplifiers.
R10. MODE
: to alternate between Stereo/Monoblock/Bi-Amplification settings.
R11. INT/POWER Amp
: to alternate between Pre-Main and Power Amplification setings.
R12.
4R/8R speaker
: to select the correct speaker impedance.
R13.
Infra-Red Link
: for connection of a wireline remote control.
In the majority of audio systems, the AM-777 is most likely to be operated as a Pre-Main Amplifier.
Please inspect the rear panel of the AM-777 to verify that the default settings (in bold) are as follows:
1. HIFI/PRO switches
are set to
HiFi
(left position)
2. MODE switch
is set to
LR
(middle position)
3.
INT/POWER switch
is set to
Int
(right position)
4.
4R/8R switch
is set to
8R
(unless speakers with 4R or lower impedance are used)