OPERATIONAL NOTES
PREPARATION FOR INSTALLATION
Budget a suitable space in which to place the preampli
fi
er, power supply and associated in-
terconnect cable. This space should be free of strong external magnetic and RF
fi
elds, and reason-
ably removed from strong loudspeaker-generated acoustical
fi
elds. This space should also be free
of excessive heat or dust and large enough to permit easy
fl
ow of cool air to the top, bottom and
sides of the preamp and power supply.
Make sure the power supply’s mains voltage selector switch is set to match the local line
voltage, and the wire link is present between the preamp’s green CHASSIS and black CIRCUIT
ground mini binding posts on the rear panel.
Try to position the power supply away from any interconnect cables which may be carrying
audio signals.
BEFORE POWER-UP
Once placed, join the power supply cable to the pre-ampli
fi
er via the large 16-pin circular
connector. The 16-pin connectors are keyed and can only be mated when both halves are lined
up correctly. Check and make sure the power supply is switched off, then attach the grounded
IEC power cable jack to the IEC plug. Keep the power off until all other system connections are
completed.
Proceed by connecting the input and output cabling to the signal sources and loads as de-
sired. Tie any separate turntable or tonearm ground lead to the gold CHASSIS ground binding
Set the GAIN dB control to 55 dB and VOLUME control to about 9 o’clock. Choose the
MM or an MC input, as necessary, with the INPUT control. Place the LOAD Z switch to a value
at or near that recommended by the cartridge manufacturer. Adjust the LOAD CAP switches to
a value at or near that recommended by the cartridge manufacturer less any interconnect cable
capacitance. Select and clean, if necessary, your favorite gramophone record....
Plug the power cable in and place the power supply’s mains power switch in the on (|) po-
sition. The SLEEP switch should glow. Push the SLEEP switch. The SLEEP switch will go dark,
selected INPUT and GAIN blue LED’s will illuminate, the MUTE switch lamp will start
fl
ash-
ing and the power supply pilot LED and the MANLEY STEELHEAD RC badge will light up.
The winking MUTE lamp indicates the beginning of a 30 second warm-up mute delay,
during which time the muting relay is engaged; no output will be heard from the preamp.
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