AB Amps 6600A - User Manual

MODEL 6600A
SIX CHANNEL
AMPLIFIER
The Amplified Design International Professional
Series Model 6600A is a six channel full
featured Amplifier. This compact instrument
(four rack unit) is equipped with three individual
power supplies, six independent balanced and
unbalanced inputs, detent level controls, signal
presence and “Soft Clip” indication, dual
temperature activated fan assist, Stereo/Bridge
switches per each two channels. The 6600A
delivers 400 Watts into 8 Ohms, 600 Watts into
4 Ohms and 750 Watts into 2 Ohms all six
channels driven from 20Hz to 20kHz at less than
.1% distortion (typically 0.01%). Model 6600A
incorporates a three-year, Five Star protection
plan featuring the following unprecedented
circuitry. VI energy limiters are incorporated for
short circuit protection. If an extreme low
impedance exists on any channel, a current
sensing circuit will reduce the output to prevent
amplifier overdrive.
If an abnormally high AC line voltage is present
or an excessive voltage surge appears, the
amplifier will detect the situation and turn itself
off. If an unlikely DC situation occurs, DC
sensing circuits will trigger the amplifier channel
and turn off. Thermal sensors are installed in
each channel to protect against an over
temperature condition. “Soft Clip” circuitry has
been incorporated for added protection to
prevent hard clipping from improper use. A rear
panel selectable 80Hz Linkwitz Riley fourth
order Lo-Pass filter switch has been added to
channel six for subwoofer applications. Other
features included are internal selectable input
sensitivity, ground lift switch and fully modular
design for service accessibility. Remote turn on
is available as an option. The Model 6600A will
operate from 100/240V 50-60Hz AC Mains and
measures 7” high (four rack unit), 19” wide and
16 1/2” deep.

Summary

Model 6600 A Six Channel Amplifier Overview

Amplifier Features and Performance

Details the amplifier's compact design, individual power supplies, balanced inputs, level controls, signal presence, Soft Clip, and fan assist.

Protection Mechanisms

Describes protection features including VI energy limiters, current sensing, AC voltage surge detection, DC sensing, and thermal protection.

Additional Features and Specifications

Covers Lo-Pass filter, input sensitivity, ground lift, modular design, remote turn-on, power, and physical dimensions.

Model 6600 A Technical Specifications

Output Power and Frequency

Specifies power output per channel at various impedances and frequency response characteristics.

Distortion, Noise, and Sensitivity

Details distortion levels, hum & noise, and selectable input sensitivity.

Connectivity and Controls

Lists input/output connectors, front/rear panel controls, and indicators.

Performance Metrics

Defines damping factor, slew rate, and crosstalk.

System Power and Protection

Covers gain, mainframe power supply, turn-on delay, power requirements, thermal, and DC protection.

Construction and Dimensions

Details heatsink/cooling, construction materials, and physical dimensions including weight.

6600 A Application Diagrams

Two Way Stereo with Monitor Mixes

Diagram illustrating a two-way stereo configuration with two monitor mixes.

Stereo Tri-Amp Configuration

Diagram showing a stereo tri-amplification setup.

Three Channel Bridge Mode

Diagram demonstrating the amplifier in a three-channel bridged mode.

6600 A Additional Application Diagrams

Six Zone Amplifier; Six Way Monitor Mix

Diagram for a six-zone amplifier configuration with a six-way monitor mix.

Surround Sound Systems

Diagram illustrating surround sound setups for Night Club/Home Theater.

AB Amps 6600A Specifications

General

Dimensions	19" W x 3.5" H x 14" D
Weight	35 lbs
Channels	2
Damping Factor	>200
Frequency Response	20Hz - 20kHz
Total Harmonic Distortion	<0.05%
Input Impedance	20kΩ
THD	<0.05%