Adcom gfs 4 owners manual

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GFS-4 SPEAKER SELECTOR
OWNERS MANUAL

Welcome

Please read these instructions carefully before connecting this device to your system. if
connections are made incorrectly you may short circuit and damage your amplifier.

The GFS-4 is an audiophile-grade, loudspeaker switching system. During its design and

construction, particular attention was paid to the critical svw'tching points and connectors to ensure that no
degradation of sound quality would occur during its use. Some of the outstanding features and attributes
of the GFS-4 are:

-Extremely low internal resistance.

-The highest grade of solid brass. 5-way, gold-plated binding
posts generally used in the most expensive instrumentation.

-GIass-fiber epoxy printed circuit board.

-Extra wide PC Board traces for minimum signal loss.

-Wide contact speaker selector switches capable of handling
the full music output of high-power amplifiers with music
peaks of up to 1000 watts.

Oxygen Free Copper internal jumpers made with #12 AWG
stranded cable.

SECTION 1
INITIAL HOOK UP

AMPLIFIER POWER OFF. PLEASE WAIT FOR AT LEAST TWO MINUTES AFTER TURNING

IMPORTANT NOTE: THE HOOK UP PROCEDURE SHOULD ONLY BE MADE WITHETHE
YOUR AMPLIFIER OFF BEFORE PROCEEDING.

The GFS-4 Speaker Selector is designed to be wired between your amplifier or receiver and your
speakers. The first connection to be made is from the Speaker Output Terminals of your amplifier to the 5-
way binding posts on the GFS~4 marked INPUT FROM AMPLIFIER. Use only new wire (old wire may be
oxidized causing unsatisfactory results). with as low an AWG (gauge) number as possible. The lower the
AWG number, the thicker the wire. Speaker wires will have some means of identifying polarity: one side of
the insulation will be marked with a line or ridge. or the wire will be of two different colors. in general,
heavier wire will give better results. especially for high power systems and when long wiring distances are
required. Do not use less than 18 gauge wire (the 20 and 22 gauge wire widely sold on spools as
"Speaker \Mre" is not adequate). Even heavier wire (16, 14, & 12 gauge) Is recommended when feasrble
and well worth the slight additional cost You may also wish to use one the several excellent brands of
specialty speaker wires. Talk to your high-end audio dealer about wires that are comparable with your
audio system.

As a rule, +' goes to Red terminals and -" to Black terminals. Left channel is Ch. A and Right
channel is Ch. B when such indications are used.

Next hook up each speaker pair to the pairs of terminals marked OUTPUTS TO SPEAKERS 1
THROUGH 4, as appropriate. making sure to observe correct polarity and channel indications, The 5-way
binding posts can be used with either double or single "Banana Plugs", stripped and tinned (or bare) wire,
spade connectors. or pins such as those fitted to Monster Cable and others.