Abbingdon Music Research PH-77 Reference Class - Manual (Page 11)

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R6. LOAD: RCA connectors to allow custom loads to be attached to the Direct input.
R7. DIRECT input: to connect a cartridge bypassing the multiple input switching.
R8. NORMAL inputs (Inputs 1-3): RCA inputs, for signal input of up to three vinyl sources.
R9. GROUND post: to connect turntable/phono cable ground wire/s.
R10. IEC power connector: for the connection of a mains power cable to the PH-77.
R11. POWER: rocker switch for mains on/off to the PH-77.
Always switch OFF the PH-77 before switching between Direct/Normal on the Input switch (R3)
In the majority of audio systems, the PH-77 is most likely to be operated in Direct input mode, i.e. using a single vinyl
source. If this is the case, please inspect the rear panel of the PH-77 to verify the following:
- INPUT switch is set to DIRECT
- the signal and ground cables from the single vinyl source are attached to the Direct input connections.
If more than one turntable is used in the system or more than one tonearm/cartridge combination is mounted to a
single turntable, verify the following:
- INPUT switch is set to NORMAL
- the signal and ground cables from the multiple vinyl sources are attached to the Normal input connections.
WARNING:
Always turn off power
to the PH-77 before
switching between
direct and normal in-
puts (R3) or before
making or changing
any connections
Note: Direct AND
Normal inputs must
NOT be simultane-
ously connected