Genz Benz GBE 750 User Manual

DESIGN PHILOSOPHY
With many years of experience designing and manufacturing both bass guitar speaker cabinets and ampliers, it
became obvious that there is a large market for a bass amplier line that reproduces the natural tone of the
instrument itself, while allowing for personalization of tonal texture.
As with our speakers, Genz Benz ampliers are designed to maximize your instrument’s natural tone and feel
without imparting additional unwanted coloration or reducing impact and playability. This results in an amplier that
will always be true to your instrument’s basic natural qualities and your personal tonal signature.
The circuit design, features, and physical construction have been carefully developed to give you, the experienced
player, the best performance in bass guitar amplication. Featuring sturdy jacks and controls, premium 12AX7 TUBE
and solid state FET front end pre-amps, tuner output, mute switch, active/passive switch, foot switchable channels
and shaping lters, dual 5 band active EQ, balanced direct output, and an industrial duty bipolar power amplier with
toroidal power transformer. The Genz Benz GBE 750 bass amplier gives you the tools and versatility necessary to
sound your very best on stage.
TECHNICAL MANUAL
1

Genz Benz GBE 750 Specifications

General

Type	Bass Amplifier Head
Power Output	750 Watts
Power Output @ 4 Ohms	750 Watts
Channels	1
Tube	No
Effects Loop	Yes
Frequency Response	20 Hz - 20 kHz
Input Impedance	1M Ohm
Output Impedance	4 Ohms
EQ	3-Band
Inputs	1 x 1/4"
Outputs	1 x 1/4"
Footswitch	Optional

Summary

DESIGN PHILOSOPHY

TECHNICAL INFORMATION

FEATURES

FRONT PANEL OVERVIEW

Describes the front panel layout, including input, channel, and equalization controls.

INPUT AND CHANNEL CONTROLS

Covers input sensitivity, gain, O/L LEDs, channel switching, and mute function.

SETTING INPUT SIGNAL

Guidelines for setting gain and EQ based on bass type and playing style.

ACTIVE 5 BAND EQUALIZATION

Details the 5-band EQ controls for tone shaping on the front panel.

GLOBAL SIGNAL SHAPING

Explains the L.F. EXTEND, MID SCOOP, and H.F. ATTACK shaping filters.

MASTER SECTION CONTROLS

Describes Master Volume, Output Limiter, and status indicator LEDs.

BACK PANEL

TUNER OUTPUT JACK

Provides a jack for connecting a tuner, active when mute is engaged.

EFFECTS LOOP JACKS

Serial effects loops for Tube, FET, and post-EQ summed signals.

POWERFLEX IMPEDANCE SWITCH

Allows matching power supply to speaker load for optimal efficiency.

FAN CONTROL AND DIRECT OUTPUT

Discusses fan cooling and the studio-quality balanced direct output.

FOOT SWITCH CONNECTION

Explains the 6-pin DIN jack for the 5-button footswitch.

SPECIFICATIONS

GENERAL SAFETY INFORMATION

SAFE OPERATING REQUIREMENTS

Outlines precautions for ventilation, placement, and electrical grounding.

WARRANTY INFORMATION

DECLARATION OF CONFORMITY