Manley VOXBOX - MVB 1996 - 2/2000 and MVBX 6/2000 - 4/2003 - Manual (Page 4)

FRONT PANEL
4
A B C D E H J K N W X Y Z
F G I L M O P Q R S T U V
MANLEY
VOXBOX
INPUT GAIN
FLAT
80
120
FAST
MED FAST
MEDIUM
MED SLOW
SLOW
ATTACK RELEASE
ON
PHANTOM
48 VOLTS
DS GR
EQ OUT
BYPASS
20
35
50
70
100
150
200
300
500
700
1K
200
300
700
1K
1K5
2K
3K
4K
5K
7K
1K5
2K
3K
4K
5K 8K
10K
16K
20K
6K4
13K PRE
O/P
LINE IN
INSERT
40
45
42
48
50 PRE O/P
LINE IN
500
EQ INPUT
COMPRESS 3:1
12 KHz
9 KHz
DE-ESS
BYPASS
ON
POWER
OFF THRESHOLD
INST LINE
180˚
0˚
+10 0
LOW PEAK
0 +10 0
MID DIP HIGH PEAK
-10
EQ IN
BYPASS
PHASE / IN
THRESHOLD
A INSTRUMENT INPUT: 100K ohm input impedance. The PHASE switch should be in the middle
position to use this input so that the mic input transformer is disconnected. Inserting a phone jack
here will interupt the back panel LINE INPUT. Compression will lower this impedance and can
cause some HF loss on guitars but a few dB of compression is OK. Two ways around this are use
a preamp or effects pedal between this input and the guitar or use the limiter part of the de-esser.
B PHANTOM POWER SWITCH: This is a "locking switch" for safety - Pull out to toggle. Turn
down the monitors before toggling. Use the 48 volt phantom power with FET CONDENSOR
MICS but not with dynamic or tube mics. See page11 for more on phantom power.
C PHANTOM LED: Lit when phantom power is on.
D LOW FILTER: This is a minimum phase shift "high pass" filter that is available for the mic, line
and instrument input. The slope is a gentle 6 dB per octave. FLAT = BYPASS
E PHASE SWITCH: A more correct term is polarity. This function is only available for the mic
input. The "0" position is normal (non-inverting). The "180" position reverses the phase of the mic
signal. The middle position marked "LINE" disconnects the mic transformer and optimizes the
LINE and INSTRUMENT inputs. One might also use that line position to act as a "mute" if no
line input is used (or better, the 1/4" jack is shorted). One uses the 180 position, for example, on
the bottom of a snare or with vocalists if the headphones or mic is out of phase.
F INPUT: This is the main level control for all inputs to the preamplifier. It is before the compressor
and preamplifier. It allows hot signals to be attenuated before any significant distortion can
happen.
G GAIN SWITCH: This is not a "pad". It sets the amount of negative feedback which has an effect
on gain, transient accuracy, noise, clipping characteristics, etc. It is normally used as a tone control
and/or to optimise noise. See page 11 for more on this control.
H VU METER: This is a true standard VU. It is not supposed to "agree" with peak meters. The VU
is preferred for recording to analog tape and is intended to show a reasonable representation of
how "loud" the signal will be heard. Use your tape machine's meters to safely set an output level.
I METER SELECT SWITCH: The VU meter shows 3 isolated audio inputs and 2 positions that are
used to indicate the amount of gain reduction from the compressor and de-esser / limiter. Because
the VU meter is a little slow it may not show some fast peak reduction that is actually occurring
but will tend to show the "audibility" of gain changes by the amount and rate of needle swing.
READY