HPA D604 User manual

Owner’s Manual
D604
CLIP
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D604
PROFESSIONAL POWER AMPLIFIER

WARNING

1
D604
Introduction ………………………………………………………… 2
Front Panel Controls ………………………………………………… 3
Rear Panel Controls ………………………………………………… 4
Connections …………………………………..........……………… 5
Wiring .......................................................................................... 7
Block Diagrams ……………………………………………..……… 8
Specications …………………………………………………….… 9
Table of Contents
Table of Contents

2
D604
Introduction
Welcome
This section briefly describes the possibilities of the HPA D604 Class-D Power Ampli-
fiers.
The D series amplifiers are digital power amplifiers designed to meet the specialized
needs of sound contractors. They are designed in six different models of Class D
power amplifiers, divided in three different architectures to meet the requirements
for all kinds of applications.
They combine the best of all features in one single series of amplifiers, providing an
outstanding sound quality with all the known advantages of Class D Amplifiers. Such as
the excellent efficiency and very low heat dissipation. And due to the complete pas-
sively cooled entity only a minimal of maintenance is needed, while ensuring maximum
reliability.
The small size of a single rack space make them very interesting for fixed rack mount
as well as mobile applications.
The HPA-D604 are four channel Class D amplifiers capable of delivering a power
4 x 150 Watt., with various specific features and advanced protection circuitry which
protects against DC malfunctioning, short circuit, overheating and overload.
The signal input connections are accommodated with balanced XLR or 1/4-inch TRS
Combination input connectors. The operation mode can be selected between Stereo
mode, Bridge mode and Parallel mode.
The output connections are accommodated with output binding posts or Speakon con-
nectors.
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D604
PROFESSIONAL POWER AMPLIFIER
D604
Introduction

3
D604
Front Panel Controls
1. Power switch:
By means of the power switch, the amplifier
can be turned ON and OFF. When the amplifier
is switched on, the blue LED located above the
power button will illuminate.
2. Gain control knobs:
These rotary gain control knobs allow you to
adjust the level for each individual channel.
3. Indicator LED’s:
These LED’s indicate the operation of the ampli-
fier. There are three LED’s provided. A signal
indicator, a Clip indicator, and a Protect indica-
tor. The green signal indicator LED’s will light up
when the input channel exceeds -20 dBu. The
yellow clip LED’s will illuminate when the chan-
nel’s
output is being overdriven, and the two red pro-
tect indicators illuminate when the thermal
compression begins, or any fault is detected.
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D604
PROFESSIONAL POWER AMPLIFIER
Front Panel Controls
1 32

4
D604
Rear Panel Controls
1. Power inlet:
The mains power supply (100~240V AC / 50~60
Hz) has to be applied to this AC power inlet.
The connection is made by an IEC power con-
nector and is fitted with a fuse. When replacing
the fuse, make sure that the value of the re-
placement fuse matches the value of the origi-
nal fuse.(T6.3AH/250V)
2.Binding post output connectors
Connection to the binding posts can be made
with bare wire, banana plugs, or spade lug
terminations. Make connections to both the
Channel 1 and Channel 2 terminals for Stereo or
Parallel Mode, or a single connection of Chan-
nel 1 +(red) and Channel 2 -(black) for Bridged
Mono Mode. Make connections to both the
Channel 3 and Channel 4 terminals for Stereo or
Parallel Mode, or a single connection of Chan-
nel 3 +(red) and Channel 4 -(black) for Bridged
Mono Mode.
3. Speakon output connectors
You can use these to connect each channel of
A Series to 8 ohms or 4 ohms loudspeakers.
Using Speakon speaker cables, make con-
nections to both the channel 1 and channel 2
connections for Stereo or Parallel Mode, or to
the Bridged mode connector for Bridged Mono
Mode.
4. Operation mode switch:
For every two channels is an “Operation mode
switch” provided. By means of this switch, the
operation mode of the amplifier can be selected
CH 3CH 4 CH 2 CH 1
1
2
34
CH
CONNECT 1CONNECT 2
BALANCED
INPUT
BALANCED
INPUT
OUTPUT
BRIDGE PARALLEL
STEREO
BRIDGE PARALLEL
STEREO
CH 1
BRIDGE
CH 2
CH 3
BRIDGE
CH 4
~AC Input
100~240V 50/60Hz, 160W
Fuse: T6.3AH/250V
between standard stereo mode, parallel mode
and bridge mode. For standard stereo applica-
tions, this switch should be turned to center
position for “Stereo” mode.
5. Input connectors
Connect the input source to these electronic
balanced Combination connectors using either
XLR or 1/4” TRS plugs.
The 1/4”TRS and XLR plug configured as fol-
lows :
Pin 2 (Tip) hot, Pin 3 (Ring) cold, and Pin
1(Sleeve) ground. We recommend the use of
balanced three-conductor cabling wherever
possible. Unbalanced two-conductor 1/4” plugs
can also be inserted into these inputs, but you
will get better signal quality and less outside
noise and hum if you use balanced lines. Stereo
signal should be connected to both the Chan-
nel 1 and Channel 2 input jacks; however; when
operating the D 604 in Bridged Mono or Parallel
modes, use the Channel 1 input jack only.
Stereo signal should be connected to both the
Channel 3 and Channel 4 input jacks; however;
when operating the D 604 in Bridged Mono or
Parallel modes, use the Channel 3 input jack
only.
Rear Panel Controls
5 5 22
4 3 34
1

5
D604
Binding posts connectionS
1) Stereo Mode:
2) Bridge mono Mode:
3) Parallel Mode:
Connections
CH 3CH 4 CH 2 CH 1
1
2
34
CH
CONNECT 1CONNECT 2
BALANCED
INPUT
BALANCED
INPUT
OUTPUT
BRIDGE PARALLEL
STEREO
BRIDGE PARALLEL
STEREO
CH 1
BRIDGE
CH 2
CH 3
BRIDGE
CH 4
~AC Input
100~240V 50/60Hz, 160W
Fuse:T6.3AH/250V
Or
AA
Or
AA
Or
AA
Or
AA
CD
AB
BRIDGE PARALLEL
STEREO
BRIDGE PARALLEL
STEREO
CH 3CH 4 CH 2 CH 1
1
2
34
CH
CONNECT 1CONNECT 2
BALANCED
INPUT
BALANCED
INPUT
OUTPUT
BRIDGE PARALLEL
STEREO
BRIDGE PARALLEL
STEREO
BRIDGE PARALLEL
STEREO
CH 1
BRIDGE
CH 2
CH 3
BRIDGE
CH 4
BRIDGE PARALLEL
SPK A + to CH1+(RED)
SPK A -to CH2 -(BLACK)
SPK B + to CH3+(RED)
SPK B -TO CH4 -(BLACK)
STEREO
~AC Input
100~240V 50/60Hz, 160W
Fuse:T6.3AH/250V
Or
AA
Or
AA
A A
CH 3CH 4 CH 2 CH 1
1
2
34
CH
CONNECT 1CONNECT 2
BALANCED
INPUT
BALANCED
INPUT
OUTPUT
BRIDGE PARALLEL
STEREO
BRIDGE PARALLEL
STEREO
CH 1
BRIDGE
CH 2
CH 3
BRIDGE
CH 4
~AC Input
100~240V 50/60Hz, 160W
Fuse:T6.3AH/250V
Or
AA
Or
AA
CD
AB
BRIDGE PARALLEL
STEREO
BRIDGE PARALLEL
STEREO
Attention:
Minimum Impedance 4 Ohm Each channel in the channel 1 and 2.Minimum Impedance 8
ohms Bridge output.
Attention:
Minimum Impedance 8 ohms Bridge output.
Attention:
Minimum Impedance 4 Ohm Each channel in the channel 1 and 2.Minimum Impedance 8
ohms Bridge output.

6
D604
Speakon connections
1) Stereo Mode:
2) Bridge mono Mode:
3) Parallel Mode:
Connections
CH 3CH 4 CH 2 CH 1
1
2
34
CH
CONNECT 1CONNECT 2
BALANCED
INPUT
BALANCED
INPUT
OUTPUT
BRIDGE PARALLEL
STEREO
BRIDGE PARALLEL
STEREO
CH 1
BRIDGE
CH 2
CH 3
BRIDGE
CH 4
~AC Input
100~240V 50/60Hz, 160W
Fuse:T6.3AH/250V
Or
DD
Or
CC
Or
BB
Or
AA
B
C D
CONNECT2
CH1: 1+ 1- SPK C
CH2: 2+ 2- SPK D
CONNECT1
CH1: 1+ 1- SPK A
CH2: 2+ 2- SPK B
B
A B
BRIDGE PARALLEL
STEREO
BRIDGE PARALLEL
STEREO
CH 3CH 4 CH 2 CH 1
1
2
34
CH
CONNECT 1CONNECT 2
BALANCED
INPUT
BALANCED
INPUT
OUTPUT
BRIDGE PARALLEL
STEREO
BRIDGE PARALLEL
STEREO
CH 1
BRIDGE
CH 2
CH 3
BRIDGE
CH 4
~AC Input
100~240V 50/60Hz, 160W
Fuse:T6.3AH/250V
Or
BB
Or
AA
B
B
B
A
CONNECT2
CH1: 1+ 2- SPK B
CONNECT1
CH1: 1+ 2- SPK A
BRIDGE PARALLEL
STEREO
BRIDGE PARALLEL
STEREO
CH 3CH 4 CH 2 CH 1
1
2
34
CH
CONNECT 1CONNECT 2
BALANCED
INPUT
BALANCED
INPUT
OUTPUT
BRIDGE PARALLEL
STEREO
BRIDGE PARALLEL
STEREO
CH 1
BRIDGE
CH 2
CH 3
BRIDGE
CH 4
~AC Input
100~240V 50/60Hz, 160W
Fuse:T6.3AH/250V
Or
BB
Or
AA
B
C D
CONNECT2
CH1: 1+ 1- SPK C
CH2: 2+ 2- SPK D
CONNECT1
CH1: 1+ 1- SPK A
CH2: 2+ 2- SPK B
B
A B
BRIDGE PARALLEL
STEREO
BRIDGE PARALLEL
STEREO
Attention:
Minimum Impedance 4 Ohm Each channel in the channel 1 and 2.Minimum Impedance 8
ohms Bridge output.
Attention:
Minimum Impedance 8 ohms Bridge output.
Attention:
Minimum Impedance 4 Ohm Each channel in the channel 1 and 2.Minimum Impedance 8
ohms Bridge output.

7
D604
These are several ways to interface the D 604 amplifier to support a variety of applica-
tions. The D 604 features balanced inputs and outputs; so connecting balanced and
unbalanced signals is possible.
Wiring
Wiring
Unbalances 1/4” Connector
Balances TRS 1/4” Connector
XLR Balanced Wiring Guide
Speakon® Output Connector

8
D604
Block diagrams
Block diagrams