HPA QA4150, QA4300 Owner's Manual
Owner’s Manual
QA4150
QA4300
POWER AMPLIFIER
QUAD-CHANNEL
POWER
ON
OFF
QA4300
HPA
CHANNEL 1
0
1
2
3
4
5
6
7
8
91011
12
13
15
17
19
22
29
54
PROTECTCLIPSIGNAL
CHANNEL 2
0
1
2
3
4
5
6
7
8
91011
12
13
15
17
19
22
29
54
PROTECTCLIPSIGNAL
CHANNEL 3
0
1
2
3
4
5
6
7
8
91011
12
13
15
17
19
22
29
54
PROTECTCLIPSIGNAL
CHANNEL 4
0
1
2
3
4
5
6
7
8
91011
12
13
15
17
19
22
29
54
PROTECTCLIPSIGNAL
POWER AMPLIFIER
QUAD-CHANNEL
POWER
ON
OFF
QA4150
HPA
CHANNEL 1
0
1
2
3
4
5
6
7
8
91011
12
13
15
17
19
22
29
54
PROTECTCLIPSIGNAL
CHANNEL 2
0
1
2
3
4
5
6
7
8
91011
12
13
15
17
19
22
29
54
PROTECTCLIPSIGNAL
CHANNEL 3
0
1
2
3
4
5
6
7
8
91011
12
13
15
17
19
22
29
54
PROTECTCLIPSIGNAL
CHANNEL 4
0
1
2
3
4
5
6
7
8
91011
12
13
15
17
19
22
29
54
PROTECTCLIPSIGNAL
WARNING
1
QA4150 / QA4300
Introduction ………………………………………………………… 2
Features ……………………………………………………………… 3
Front Panel Controls ………………………………………………… 4
Rear Panel Controls ………………………………………………… 5
Protection …………………………………………………………… 7
Setup ………………………………………………………………… 8
Connections ………………………………………………………… 9
Wiring ………………………………………………………………… 11
Specifications ……………………………………………………… 12
Table of Contents
Table of Contents
2
QA4150 / QA4300
Introduction
Welcome.
Congratulation and thank you for the purchasing QA Series, a state-of-the-art heavy
duty professional amplifier.
These amplifier are designed to provide a big impact in sound reproduction and to
produce the best and highest quality audio at an affordable price. We wish you great
enjoyment and satisfaction when using your amplifier, whether you are an installation,
or reinforcement engineer.
Unpacking and Installation
Although it is neither complicated to install nor difficult to operate your amplifier, a few
minutes of your time is required to read this manual for a properly wired installation
and becoming familiar with its features and how to use them. Please take a great care
in unpacking your set and do not discard the carton and other packing materials. They
may be needed when moving your set and are required if it ever becomes necessary to
return your set for service. Never place the unit near radiator, in front of heating vents,
to direct sun light, in excessive humid or dusty location to avoid damages and to guaranty a long reliable use. Connect your unit with the system components according to
the description on the following pages.
POWER AMPLIFIER
QUAD-CHANNEL
POWER
ON
OFF
QA4300
HPA
CHANNEL 1
0
1
2
3
4
5
6
7
8
91011
12
13
15
17
19
22
29
54
PROTECTCLIPSIGNAL
CHANNEL 2
0
1
2
3
4
5
6
7
8
91011
12
13
15
17
19
22
29
54
PROTECTCLIPSIGNAL
CHANNEL 3
0
1
2
3
4
5
6
7
8
91011
12
13
15
17
19
22
29
54
PROTECTCLIPSIGNAL
CHANNEL 4
0
1
2
3
4
5
6
7
8
91011
12
13
15
17
19
22
29
54
PROTECTCLIPSIGNAL
QA4150 / QA4300
QUAD-CHANNEL POWER AMPLIFIER
Introduction
3
QA4150 / QA4300
Features
HPA QA-Series amplifier delivers the following power ratings.
QA4150 4 x 100 Watts at 8 ohm, 4 x 150 Watts at 4 ohm and 2 x 300 Watts at 8 ohm bridge
QA4300 4 x 200 Watts at 8 ohm, 4 x 300 Watts at 4 ohm and 2 x 600 Watts at 8 ohm bridge
4-channel, 2-parallel or 2-bridged mono operating modes for flexible application 300
Watts for QA4150, 600 Watts for QA4300.
Independent limiters for each channel reduce distortion.
Independent input level controls for each channel allow precision adjustments.
Precise signal and clip LED indicators to monitor performance, allow you to correct
for overloading (clipping) condition.
Twin-tunnel and four temperature-sensitivity forced-air cooling system to maintain a
low temperature working condition.
Balanced XLR or balanced 1/4-inch TRS Combination input connector for each
channel.
5-way output binding posts or Speaker connectors enable secure operation.
High-current toroidal transformer for absolute reliability.
Independent DC and thermal overload protection on each channel automatically protects amplifier and speaker.
The QA series can be mounted in any standard 19” rack.
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Features
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