Ampeg V4BH User Manual

V4BH Bass Amplifier
Gain Bass Midrange Frequency Treble Master
Hi
Lo
Ultra Hi / Lo
010
5
4
3
2
1
9
8
7
6
010
5
4
3
2
1
9
8
7
6
010
5
4
3
2
1
9
8
7
6
010
5
4
3
2
1
9
8
7
6
010
5
4
3
2
1
9
8
7
6
5
4
3
1
2
010
5
4
3
2
1
9
8
7
6
Gain Bass Midrange Frequency Treble Master
Hi
Lo
Ultra Hi / Lo
010
5
4
3
2
1
9
8
7
6
010
5
4
3
2
1
9
8
7
6
010
5
4
3
2
1
9
8
7
6
010
5
4
3
2
1
9
8
7
6
010
5
4
3
2
1
9
8
7
6
5
4
3
1
2
010
5
4
3
2
1
9
8
7
6
Gain Bass Midrange Frequency Treble Master
Hi
Lo
Ultra Hi / Lo
010
5
4
3
2
1
9
8
7
6
010
5
4
3
2
1
9
8
7
6
010
5
4
3
2
1
9
8
7
6
010
5
4
3
2
1
9
8
7
6
010
5
4
3
2
1
9
8
7
6
5
4
3
1
2
010
5
4
3
2
1
9
8
7
6
Gain Bass Midrange Frequency Treble Master
Hi
Lo
Ultra Hi / Lo
010
5
4
3
2
1
9
8
7
6
010
5
4
3
2
1
9
8
7
6
010
5
4
3
2
1
9
8
7
6
010
5
4
3
2
1
9
8
7
6
010
5
4
3
2
1
9
8
7
6
5
4
3
1
2
010
5
4
3
2
1
9
8
7
6
IN
IN
IN
IN
6
Some Suggested Settings
FUNK:
JAZZ:
ROCK:
COUNTRY:
The setting of the
Gain control
depends on your
particular instrument.
The Master should
be set to produce
the appropriate
output volume level.

Ampeg V4BH Specifications

Power

output power rating	100 watts RMS
power requirements	115VAC, 60Hz, 190VA; 100/115VAC, 50/60Hz, 190VA; 230VAC, 50/60Hz, 190VA

Audio Specifications

total system gain	59dB @ 1kHz
tone control range - bass	±12dB @ 40Hz
tone control range - midrange	+10dB, -20dB @ 220, 450, 800, 1.6k or 3kHz
tone control range - treble	+15dB, -20dB @ 4kHz
ultra low	+2dB @ 40Hz, -10dB @ 500Hz
ultra high	+9dB @ 8kHz
presence	+6dB @ 10kHz
signal to noise ratio	80dB typical

Tube Complement

12AX7 tubes	2
12AU7 tubes	2
6L6/5881 tubes	4

Weight and Dimensions

width	23-3/4”
height	11”
depth	12-3/4”
weight	40 lbs