Gallien-Krueger 400RB/210 Panduan Pemilik - Halaman 10
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Halaman Cetak
Front Panel Controls
1-Balanced Direct Out:
An electronically balanced output, that you can run
to your P.A. system.
2-Ground/Lift:
This switch disconnects the ground on the balanced,
XLR output to eliminate hum and buzz when
connnecting to equipment that is running on a
different ground system.
Pre/Post EQ Button:
Selects the direct out signal before or after the EQ.
3-Input:
A standard ¼" input jack to plug in active or passive
basses using a shielded cord.
4- -14dB Pad:
Input attenuator button. The button is generally left
out, except in rare cases when the clip LED flashes.
This switch should be pressed if the CLIP LED stays on
continuously. It may be necessary to "pad" the input
if you are using a bass with active electronics or very
high output.
Clip LED:
LED lights yellow when the input stage is being
over-driven.
If -14dB PAD is pressed and clip
LED still stays lit, turn down the volume on
your bass.
Tuning Mute Button:
Set this switch to "On" when tuning up. No signal
will be sent to the speakers, or the P.A. system.
Mute LED:
LED turns on when "Tuning Mute" is switched
to the "ON" position.
5-Volume:
Sets pre-amp gain after the input stage. It is used in
conjunction with the input pad, to optimize the
amplifier's headroom.
6-Voicing Filters:
4/5 String Bass:
Setting this button to the "ON" position, voices the
pre-amp for basses with "B" tuning (5 string bass).
Leaving it in the "Out" position will voice the amp
like the 800RB, for a 4 string bass.
Contour:
Drops the mid-range frequencies while boosting lows
& highs.
400RB-IV Series
Presence:
Adds edge and definition to higher frequencies.
Active Equalization:
7-Treble:
Boost and cut at 7 kHz +14dB shelving type. Add or
remove edge and definition.
8-High Mid:
Boost and cut at 1 kHz +6dB/ -10dB, "Q Optimized,"
band pass type. Works on lower string harmonics,
and effects the punch of your sound.
9-Low Mid:
Boost and cut at 250Hz +6dB/-10dB, "Q Optimized,"
band pass type. Works on the main body of your
sound.
10-Bass:
Boost and cut at 60Hz +10dB, shelving type. Controls
low end push.
11-Boost:
A post EQ gain stage using GIVE technology which
adds "growl" as it is turned up.
12-Master:
Controls the output level of the amplifier.
13-Effects Loop:
Send and return jacks provided for the insertion of
effects after the EQ, but before the boost section.
Some effect units have gain, turning the BOOST
down, will compensate for this.
14-Tuner Output
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.
15-Power/Protect LED:
The LED is red at turn-on for five seconds while
the amp powers up.
the amp is ready to play.
experience a fault (over heat, over current) the
amp will mute and this LED will switch to red
until the condition is corrected.
off when the power switch is turned off.
16-Power Switch:
Turns the amplifier on or off.
occur during operation press this switch out
first.
This turns the amp off, but does not
completely disconnect the power from the AC
mains.
The power LED should be off at this
p o i n t .
10
The LED turns blue when
Should the amp
This LED turns
Should a problem