Gallien-Krueger 2001RB Owner's Manual - Page 12

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Rear Panel Features

AC Receptacle: The power cord is detachable and

plugs in here.

Remote Trigger: This feature is used when using

multiple 2001RBs as 'master' and 'slave' units. It

allows you to turn on all ampliﬁers at the same time,

when the 'master' unit is powered on. Accepts the

+12VDC signal from the 'master' 2001RB's Trigger

Out jack to activate or turn on, the 'slave' 2001RBs

when in standby mode. Provides +12VDC as a trigger

output to remotely turn on a 'slave' 2001RB

Right 'Speakon' Outputs: Enables biamp operation

by connecting a GK biamp compatible cabinet with a 4

conductor Speakon cable. This connects the 50W

ampliﬁer allowing the Tweeter control on the front

panel to control the signal going to the horn. See Biamp

and Normal Operation on page 9 for more information.

Right Speaker Out: 540W power amp output for

Full-Range operation only. They deliver 540 watts into

2 Ohms or 360 watts into 4 Ohms. Lower impedances

should not be used.

Right Level: This adjusts the output level of the right

channel only in dual-mono mode.

Bridge Mode: This allows one to switch from

Dual/Mono to Bridge mode.

Left Speaker Out: 540W power amp output for

Full-Range operation only. They deliver 540 watts into

2 Ohms or 360 watts into 4 Ohms. Lower impedances

should not be used.

Left/Bridged Speakon Outputs: Enables biamp

operation by connecting a GK bi-ampable cabinet with

a 4 conductor Speakon cable. This connects the 50W

ampliﬁer allowing the tweeter control on the front

panel to control the signal going to the horn. See Biamp

and Normal Operation on page 9 for more information.

These Speakon outputs also enable bridged mode

operation. When in bridged mode, the 2001RB will be

in a simultaneous bridged/biamp mode, since the 50W

horn ampliﬁers are always active (in the clean channel

only) unless you choose to use the 'horn mute' feature,

via the RFB-III footswitch.

2001RB

12 13

NEVER

CONNECT ANYTHING

CHANNEL OUTPUTS WHEN IN BRIDGED MODE! DO

NOT

USE

BRIDGE

MODE

AMPLIFIER.

THIS

COULD

MALFUNCTION

AND/OR

AMPLIFIER!

Footswitch: Provides a means to hook up the RFB-III,

three button footswitch to your ampliﬁer, with a

standard 5 pin DIN (MIDI) cable. The RFB-III allows

remote Channel Switching (Level A or Level B), Horn

Mute (when in the clean channel) and Tuning Mute

Direct Out: Use this balanced adjustable (with the

level control #13) output to connect to a P.A. system.

Gnd/Lift Switch: This switch disconnects the ground

on the balanced, XLR output to eliminate hum and

buzz when connecting to equipment that is running on

a different ground system.

Direct Out/Pre/Post EQ: Selects whether the direct

out signal is before or after the E.Q.

Level: This is the volume control for the direct out

Send, Return & Tuner: Line level output that is post

EQ and pre Boost. Used when sending a full range

mono signal to an external device (effects, processors,

etc.) Accepts line level return from external effects that

are connected in a series loop. Output comes directly

off the input stage and can be patched to a tuner with a

shielded patch cord. This output is unaffected by the

tuning mute feature.

Chain In & Chain Out: This 'daisy chain' feature is

used when multiple 2001RBs are used as 'master' and

'slave' units. Both jacks are stereo, where the tip is the

woofer output and the ring is the horn output. When the

master amp's Chain out signal is input to the slave

amp's Chain in, the slave amp's preamp/tone control

section is bypassed completely, and will serve as a

straight power amp only. This output is used to daisy

chain or connect other slave amps to the master amp.

The signal going into the slave amp's Chain in is the

same signal coming out of the Chain out. This

eliminates the need for special Y adaptor when using

the Daisy Chain feature, the stereo cable cord as short

as possible to reduce hum/noise.

THE

RIGHT

CABLES WITH THIS

CAUSE A

SERIOUS

DAMAGE

THE