Introduction technical design features, Specifications, Cont) – Hafler GX2600CE User Manual

Page 11: Why a new amplifier topology

The Hafler GX2300 and GX2600 amplifiers are two rack height, two channel, fan-cooled professional power amplifiers
suitable for use in the most demanding sound reinforcement and commercial sound installations. These amplifiers offer out-
standing efficiency by means of three technologies: high-efficiency Class-G Tri•nova amplifiers, high-frequency switching
power supplies, and constant power output/load impedance selection switches. Crossover, Time Delay, Phase and CD
Equalization features make the GX2300/2600 especially useful in 2-way cinema applications.

Introduction

Technical Design Features

WHY A NEW AMPLIFIER TOPOLOGY?

Hafler TRANS•nova amplifiers, the recording studio reference, have a floating +/- power supply for each channel and a
Nodal drive system covered by U.S. Patents 4,467,288 and 5,567,000. Our challenge was to convert this topology into a
high efficiency design with minimal increase in complexity-yielding an amplifier of outstanding audio qualities, high effi-
ciency and unprecedented value. Tri*•nova is the answer.

The most common high-efficiency (Class-H) methods raise the rail voltages going to the output devices for higher power
levels. Tri•nova does not do this. Instead, it operates by forming a triplet or triplex of tracking signals: A, (A+V) and (A–V),
where A is the raw audio output and +/– are the floating rails. The amplifier final output is selected to be at an appropriate
voltage between (A+V) and (A–V) for each condition of the signal. The output voltage and current capability are each
potentially doubled and the power potentially quadrupled–without having to increase the rail voltages fed to the devices.
One or more patents are expected from this technology.

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Specifications

(cont)

DIMENSIONS:

(2U) 3.5H" x 19"W x 18.5"D

(rack handles add 1.25"D)

WEIGHT:

32lbs. (14.51 kg)

protect

thermal

signal

clip

Stereo Mono

70V

100V

CH A

CH B

Power

Load

Channel A

70V

4Ω

2Ω

100v

8Ω

Channel b

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