{
1
MODEL BC250
2
10
12
9
7
3
4
11
5
2
DYNAMICS
DYNAMICS
HORNS
HORNS
BRIGHT
BRIGHT
FULL
FULL
INJECT
INJECT
DIRECT
DIRECT
BC-250
BC-250
INPUT
INPUT
EQUALIZATION
EQUALIZATION
MASTER
MASTER
VOLUME
VOLUME
TREBLE
TREBLE
BASS
BASS
GAIN
GAIN
ACTIVE
ACTIVE
PASSIVE
PASSIVE
HI
HI
LO
LO
COMP
COMP
3k2Hz
3k2Hz
1k6Hz
1k6Hz
800Hz
800Hz
400Hz
400Hz
200Hz
200Hz
100Hz
100Hz
2
2
3
3
1
1
0
0
10
10
4
4
5
5
6
6
7
7
8
8
9
9
3
3
2
2
4
4
5
5
5
5
1
1
0
0
1
1
2
2
3
3
4
4
+
+
-
-
3
3
2
2
4
4
5
5
5
5
1
1
0
0
1
1
2
2
3
3
4
4
+
+
-
-
9
9
8
8
7
7
6
6
5
5
4
4
10
10
0
0
1
1
3
3
2
2
POWER
POWER
6
8
SEND
SEND
RETURN
RETURN
EFFECTS LOOP
EFFECTS LOOP
INTERNAL
INTERNAL
(8 OHM)
(8 OHM)
SPEAKERS
SPEAKERS
(8 OHM)
(8 OHM)
EXTERNAL
EXTERNAL
MIN
MIN
POWER
POWER
1
1
0
0
TO AVOID FIRE HAZZARD
TO AVOID FIRE HAZZARD
REPLACE ONLY WITH
REPLACE ONLY WITH
SAME TYPE AND RATING.
SAME TYPE AND RATING.
110-120V :-T6.3A
110-120V :-T6.3A
220-240V :-T3.15A
220-240V :-T3.15A
~
~
~
~
CAUTION
CAUTION
THIS APPARATUS
THIS APPARATUS
MUST BE EARTHED.
MUST BE EARTHED.
SUPPLY
SUPPLY
VOLTAGE
VOLTAGE
~
~
CAUTION
CAUTION
TO REDUCE THE RISK OF ELECTRIC
TO REDUCE THE RISK OF ELECTRIC
SHOCK DO NOT REMOVE COVER.
SHOCK DO NOT REMOVE COVER.
NO USER SERVICABLE PARTS
NO USER SERVICABLE PARTS
INSIDE.REFER SERVICING TO
INSIDE.REFER SERVICING TO
QUALIFIED SERVICE PERSONNEL.
QUALIFIED SERVICE PERSONNEL.
WARNING
WARNING
TO REDUCE THE RISK OF FIRE
TO REDUCE THE RISK OF FIRE
OR ELECTRIC SHOCK DO NOT
OR ELECTRIC SHOCK DO NOT
EXPOSE THIS APPLIANCE
EXPOSE THIS APPLIANCE
TO RAIN OR MOISTURE.
TO RAIN OR MOISTURE.
8574
8574
MAXIMUM POWER CONSUMPTION
MAXIMUM POWER CONSUMPTION
500W 50/60Hz
500W 50/60Hz
~
~
SERIAL No.
SERIAL No.
MADE IN THE U.K. BY BLT INDUSTRIES LTD.
MADE IN THE U.K. BY BLT INDUSTRIES LTD.
INPUTS:
ACTIVE. Input jack for active or high output instruments such as those with built in pre-
amplifiers. PASSIVE. Input jack for most passive instruments such as those without built in
pre-amplifiers.
GAIN:
Sets the overall gain of the amplifier to suit the instrument being used. Set as high as possible
without distortion, then adjust the overall volume to suit. The gain control may need re-adjusting after EQ
changes.
COMPRESSOR:
Compresses the input signal, giving a punchier sound. Use in conjunction with GAIN
control.
HI:
Boosts the high frequencies
LO:
Boosts the extreme low frequencies, especially useful on 5 string bass guitars.
BASS:
Sets the Bass frequency response.
GRAPHIC
EQ:
Six band graphic equaliser, use to set the middle frequencies. For best sound set the
sliders to gradual curves and avoid extremes.
TREBLE:
Sets the high frequency response.
VOLUME:
Sets the overall listening level of the amplifier.
FULL:
Engages a speaker control system which controls the tightness of the bass response.
BRIGHT:
Switches in increased attack and sparkle to the upper frequencies.
HORNS:
Switches in the HF units fitted to the unit.
DIRECT
INJECT:
XLR socket for direct injection of the amplifier signal to a mixing desk or power
amplifier. This provides a low impedance output signal (Balanced output, Pin 1: Ground, Pin2: Hot, Pin
3:cold
1
2
3
4
9
5
6
7
8
{