Ampeg Bass heads enclosure V4BH User Manual

Owner’s Guide
for the
V4BH
Bass Amplifier
Made in the U.S.A.by 

V4BH Bass Amplifier
2
Table of Contents
Important Safeguards and Precautions  . . . . . . . . . . . . . .2
Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Features  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
System Block Diagram  . . . . . . . . . . . . . . . . . . . . . . . . . .3
The Front Panel Controls and Their Use  . . . . . . . . . . . . .4
The Rear Panel  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Some...

V4BH Bass Amplifier
3 An Introduction to your new Ampeg V4BH Bass Amplifier
The harmonically rich sound and legendary performance of the classic AMPEG SVT are redefined in the V4BH.
This dynamically powerful bass amp delivers a thunderous 100 watts of unsurpassed quality, reliability and tonal
flexibility. It also provides the classic vibrance of tubes as well as contemporary features. The features and controls
of your V4BH are covered in detail within the pages of this owner’s guide. We recommend going...

4
The Front Panel Controls and Their Use
V4BH Bass Amplifier
Gain Bass Midrange Frequency Treble Master Standby Power
HiHi
LoLoUltra Hi / LoUltra Hi / Lo–15dB15dB0dB0dB
0105
4
3
2
1
98 7 60105
4
3
2
1
98 7 60105
4
3
2
1
98 7 60105
4
3
2
1
98 7 60105
4
3
2
1
98 7 6
5 4 3
12
0105
4
3
2
1
98 7 6
12345678910121113
 Standby/ Standby/ Power Power
1. 0dB INPUT:The signal output from an
instrument (active or passive – typically
passive) or a line level signal may be con-
nected here by means of a shielded...

5
The Rear Panel
V4BH Bass Amplifier
1418171619202221 15
14. FUSE:This protects the unit from
damage due to overload conditions or
power line surges. If the fuse blows,
replace it only with the same size and
type.
15. AC LINE IN:Firmly insert the sup-
plied AC power cord into this socket
until it is fully seated. Plug the male
end of the cord into a grounded AC
outlet. DO NOT DEFEAT THE
GROUND PRONG OF THE AC
PLUG!
16. PREAMP OUT:This jack carries
the post-Master (10) signal. Using this
jack does not...

V4BH Bass Amplifier
Gain Bass Midrange Frequency Treble Master
Hi
Lo
Ultra Hi / Lo
0105
4
3
2
1
98 7 60105
4
3
2
1
98 7 60105
4
3
2
1
98 7 60105
4
3
2
1
98 7 60105
4
3
2
1
98 7 6
5 4 3
12
0105
4
3
2
1
98 7 6
Gain Bass Midrange Frequency Treble Master
Hi
Lo
Ultra Hi / Lo
0105
4
3
2
1
98 7 60105
4
3
2
1
98 7 60105
4
3
2
1
98 7 60105
4
3
2
1
98 7 60105
4
3
2
1
98 7 6
5 4 3
12
0105
4
3
2
1
98 7 6
Gain Bass Midrange Frequency Treble Master
Hi
Lo
Ultra Hi / Lo
0105
4
3
2
1
98 7 60105
4
3
2
1
98 7 60105
4
3
2...

V4BH Bass Amplifier
Changing the Tubes
The performance characteristics of tubes are degraded in direct proportion to how often and under what conditions
the amplifier is used. Power tubes should be checked at least once a year - more frequently if you use the amplifier
nearly every day. When power tubes wear out, the amplifier will begin to grow weak, lack punch, fade up and down,
or lose highs and lows. Power tubes work together in a push/pull configuration and should all be replaced at the same
time...

Ampeg reserves the right to change specifications without notice.
Ampeg is proudly Made in America. ©1999 SLM Electronics, 1400 Ferguson Avenue, St. Louis, MO 63133 U.S.A.
P/N 47-509-42 • 092805
V4BH Bass Amplifier
www.ampeg.com
Technical Specifications
OUTPUT POWER RATING100 watts RMS minimum continuous @