Cool Running; Smart Protection Circuitry; Speakon Cables; Low Noise Operation - Gallien-Krueger 1001RB Owner's Manual

The 1001RB Series uses a "dual rail power supply" that
generates about half the heat of conventional amplifiers.
Low output signals run off a low voltage supply, and high
level signals run off a high voltage supply. This keeps
the amp running a lot cooler and makes it much more
reliable. To cool the amp when its being driven hard,
we've designed a temperature sensitive fan cooling
system. When the amp is under a light load, the fan is
off or running at a low speed, reducing fan noise. As the
amp works harder, the fan speed increases to keep
everything cool.
The 1001RB's protection circuitry constantly monitors for
unsafe operating conditions such as short circuits, miss-
wired speaker cables, blown speakers, improper ventila-
tion and incorrect speaker configurations. In addition,
protection is provided during power up/down. If the
1001RB senses any unsafe operating conditions, the
output signal is immediately muted and the power light
changes to from Green to Red. The amplifier will remain
muted until the fault is removed. If the protection circuit
activates while playing, turn the amplifier off and check
the amplifier speaker output connections. Be sure that
you are not exceeding the maximum recommend load
described in this manual. Also, check to see that you have
connected the amplifier to your speakers as described in
Bi-Amp and Normal Operation on page 7. If the problem
persists, contact GK directly for advice.
The 1001RB Series uses a high gain, high headroom, low
noise input stage. It has such a large dynamic range (60v
p-p) that very few instruments can overdrive it. Even most
basses with "active" electronics do not need the input
attenuator to be set. The benefit to you is less hiss from
your horn, and over all, much less noise.
To make use of the 1001RB's Bi-Amp feature you will
need to use the four conductor Speakon cable (provided
with the 1001RB head, and included with the combos for
connection to the internal speaker) to connect to a GK
RBH Series cabinet. This specially designed cable carries
the signals for both amplifiers (540W Woofer Amp and
50W Tweeter Amp) to the speaker cabinet. Plus, they are
the coolest speaker connectors currently available. Below
is a table describing the Speakon cable connections to the
1001RB head and combos.
Speakon Pin # Signal
1+ 540W Woofer Amp +
1- 540W Woofer Amp -
2+ 50W Tweeter Amp +
2- 50W Tweeter Amp -
To obtain an additional 4 conductor Speakon cable for
use with the 1001RB please contact your local
dealer or contact GK directly.
You should now have a thorough understanding of how
your new 1001RB Series amplifier works and what
advantages it can offer you in getting "your" sound. We
thank you for reading the Owner's Manual and wish you
the best of times! Please send us your comments via
www.gallien-krueger.com or email us at
sales@gallien.com.
WireColor
White
Black
Red
Green