Ampeg V4BH manual Features, System Block Diagram

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V4BH Bass Amplifier

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 over them before you use the amplifier.

Features

In true Ampeg tradition, your new V4BH offers you more power, performance and flexibility than any other bass ampli- fier in its class. Below are some of the outstanding features of your new amplifier – features which set it apart from the competition! Additional information on these features can be found on the pages indicated.

-15dB INPUT: This feature is perfect for “active” basses (page 4)

ULTRA LO AND ULTRA HI SWITCHES: These enable you to tailor your sound in many different ways at the touch of a button (page 4)

5-POSITION FREQUENCY SELECTOR: Take your pick from the five center frequency points to get just the right midrange voice (page 4)

SLAVE OUT: Use for powering another amp from the V4BH’s preamp (page 5)

System Block Diagram

 

 

 

 

BAL

 

 

 

 

PWR AMP

SLAVE

OUT

 

 

 

 

INPUT

OUT

 

1+

 

 

 

 

 

 

2- SPEAKON*

 

 

 

 

1-

 

 

 

 

 

 

2+

JACK

 

 

 

 

POWER

 

 

 

 

 

 

 

 

 

 

 

AMP

 

 

 

 

 

 

 

 

SPEAKER

 

 

 

 

 

 

OUT

0dB INPUT

 

 

PREAMP

 

 

 

 

 

OUT

 

 

 

 

 

BUFFER

 

8 OHMS 4 OHMS

 

EXT.

 

 

 

 

SPEAKER

 

 

MASTER

 

 

 

 

 

 

 

OUT

GAIN

 

 

 

IMPEDANCE

 

 

 

 

 

 

-15dB INPUT

BASS TREBLE

MID

 

PWR/STDBY LED

 

 

 

 

 

 

 

 

 

 

 

ULTRA

 

 

 

 

 

 

HI

 

FREQUENCY

 

 

 

 

ULTRA

LO

*Speakon is a registered trademark of Neutrik U.S.A.

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Contents V4BH V4BH Bass Amplifier Important Safeguards and PrecautionsSystem Block Diagram FeaturesFront Panel Controls and Their Use Ground Prong of the AC Plug Rear PanelCountry V4BH Bass Amplifier Some Suggested SettingsV4BH Bass Amplifier Changing the Tubes TroubleshootingPower Requirements V4BH Bass Amplifier Technical Specifications