PS Audio GCA-MC Owner's Reference Manual - page 9
4826 Sterling Drive, Boulder, CO 80301
PH: 720.406.8946 service@psaudio.com www.psaudio.com
Questions and Answers 5
®
Questions And Answers
©2004 PS Audio International Inc. All rights reserved.
Owner’s Reference
GCA-MC Power Amplifi er
provides medium brightness, the lower position shuts the light off.
The front panel PS logo is the power button. Press the blue PS logo on the GCA series power
amplifi er’s front panel to turn the amplifi er on or off. We recommend keeping the rear mounted switch
for the blue light brightness at one of the two visible levels so you can tell if the GCA-MC multi-channel
power amplifi er is on or off.
Yes, cables make a difference. It is important to use the best power cables, interconnects and speaker
cables when operating the GCA series power amplifi er.
You can power nearly every loudspeaker made with a GCA-MC power amplifi er. It is relatively tolerant
of most loudspeakers loads and will not be damaged by attempting to power heavy loads. If, while
playing music, the GCA-MC multi-channel power amplifi er continues to go into a protection mode
when the music gets loud, it means that the speaker load is probably too diffi cult for the GCA-MC and
the next higher wattage model should be considered.
The GCA-MC multi-channel power amplifi er is specifi c to your country’s voltage. Do not use the GCA-
MC on a voltage higher than it is rated for. For instance, do not take a 120 volt rated GCA-MC multi-
channel power amplifi er and attempt to use it in a 230 volt country. Failure to observe this cautionary
note will void your warranty and will damage the amplifi er. If you need to operate the GCA-MC at a
voltage other than the voltage it was designed for, contact your dealer, distributor or the factory.
If the GCA-MC multi-channel power amplifi er protection circuitry is activated, the amplifi er will
immediately shut off. Check for the source of the problem, then use the front panel logo switch to
restart the amp.
The GCA-MC multi-channel power amplifi er produces little heat under normal operation. There are
vent holes at the rear of the chassis, both top and bottom and you should be careful not to obstruct
these vents if possible.
The GCA-MC multi-channel power amplifi er can be remotely activated by a DC control voltage. Using
a small mini jack, you can turn the GCA-MC multi-channel power amplifi er on and off with a 12 volt
trigger. For instance, the PS Audio GCP preamplifi er has a trigger output jack. When connected to
the GCA-MC multi-channel power amplifi er trigger input jack, located on the lower left hand corner
of the GCA series power amplifi er’s rear panel (as you face the panel) the preamplifi er will now turn
the GCA-MC multi-channel power amplifi er on and off with a single push of the preamplifi er’s power
button.
You can determine the wattage module inside the GCA-MC by observing the sticker on the rear panel
of the amplifi er. Each channel has a wattage sticker.
Protection circuitry
What voltages
can the amp run
on?
Does the amp
require ventilation?
How does the DC
trigger work?
How do you
determine what
wattage module
is powering each
channel?
Front panel power
button
Do cables make a
difference?
What speakers can
I use?