Hafler pro 6000 owners manual

Page 2

SPECIFICATIONS

8 Ohm Power Rating: 300 watts continuous average
power per channel at less than 0.1% total harmonic distor-
tion from 20 HZ to 20 KHZ with both channels driven.

4 Ohm Power Rating: 500 watts continuous average
power per channel at less than 0.1% total harmonic distor-
tion from 20 H2 to 20 KHZ with both channels driven.

2 Ohm Power Rating: 640 watts continuous average
power per channel at less than 0.1% total harmonic distor-
tion from 20 H2 to 20 KHZ with both channels driven

8 Ohm Bridged Power Rating: 1000 watts continuous
average power at less than 0.1% total harmonic distor-
tion from 20 HZ to 20 KHZ.

4 Ohm Bridged Power Rating: 1300 watts continuous
average power at less than 0.1% total harmonic distor-
tion from 20 H2 to 20 KHZ.

Peak Output Current: 50 Amperes

IM Distortion (IHF): Less than 0.01% from 1 watt to
300 watts with both channels driven into 8 Ohms.

Frequency Response Into 8 Ohms from 20 HZ to 20
KHZ: +0.1, -O.25 db

Power Bandwidth: 5 HZ to 75KHZ

Signal to Noise Ratio (unweighted): Exceeds 110db
with respect to full power.

Damping Factor: Greater than 500

Slew Rate: 75 V/ms

Hum and Noise: lOOdb below full power, A weighted.
Input Impedance: 40,000 Ohms, balanced

Input Sensitivity: 0-36db adjustable. .775V for 300
watts

Power Consumption 120V 60HZ line: 1 amp at idle.
10 amps at 8 Ohms lKHZ at clipping and 15 amps at 4
Ohms l KHZ at clipping.

Dimensions: 19" standard rack mount 5.25" height
(3 rack) 12" behind mounting surface.

Weight: 40 lbs.

e Copyright 1990. All rights reserved

INTRODUCTION

The Hafler PRO-6000 is a high power, low profile,
two channel power amplifier intended for professional
sound installations. It is the result of modern packaging
combined with the performance and reliability character-
istics found in previous Haflerdesigns. The PRO-6000 has
an optimized combination of features needed for a profes-
sional power amplifier: high power, small package size,
rugged case construction, balanced inputs, continuously
variable DC fan for quiet operation, elaborate protection
circuitry and four output configurations including normal
stereo, stereo plus bridged mono, bridged mono, and dual
mono.

OVERVIEW OF AMPLIFIER

The PRO-6000 is a three standard rack height fan
cooled design utilizing thirty two MOSFET output de-
vices, over 80,000 micro far-ads of storage capacitance and
a large 1000 volt toroidal transformer. The amplifier has
full balanced input circuitry for good noise rejection.

The 19" extruded aluminum front panel includes

handles for ease of installation, a main power switch and
light and channel indicators for signal present, clipping and
thermal or protection shut down. The rear panel has phono, ("
1/ " phone, and XLR inputs. Output connections are the
standard 5-way binding posts. Switches on the back panel
include: mono/stereo input, mono/stereo output, floating]
chassis ground and balanced/non-balanced input. There
are also speaker fuses and level controls for both channels.

The output devices of the PRO-6000 are protected by
a sophisticated analog computing system. The device in-
stantaneous temperature is continuously calculated by the
computer and compared to the maximum limit. if the limit
is reached, the computer cuts back the power and lights the
channels distortion (red) front panel LED. A pair of ther-
mistors, one mounted on each heatsink, measure tempera-
ture of the output system. They control fan speed and
provide thermal shutdown if temperatures become to high
for safe operation. ( thermal shutdown turns the power
LED red ) The fan cooling system is the key to the PRO-
6000s performance. The fan is of avery quietdesign, with
continuously variable speed control. When the amp is cool
the fan is off. As the amp is driven harder, the fan gradually
turns on and speeds up only to the extent needed to sustain
the power dissipation needed for the conditions.