Matrix Amplification GM50 User Manual
1
GM SERIES USER MANUAL
Thank You
Congratulations on the purchase of your new
Matrix Professional Power Amplifier.
Matrix amplifiers are the result of many
decades of experience in the design of
exceptionally robust and reliable amplifiers.
They are designed to breathe life into your
sound, by controlling your speakers with
exacting authority through the
uncompromising delivery of clean,
undistorted power, from a package which is
smaller and lighter than you might expect
for the performance it delivers.
This manual will help you to get the most
from your amplifier. For maximum benefit, it
is recommended that all instructions and
warnings are carefully read. Also be sure to
read the notices regarding correct wiring of
output connectors as this impacts the
operation of the amplifier.
For warranty service, please retain your
receipt and all packaging that comes with
the amplifier, as it has been specifically
designed to transport the amplifier safely.
Unpacking
Please unpack and inspect your new
amplifier for any damage that may have
occurred during transit. If damage is found,
notify the carrier immediately.
Note: A suitable mains lead is provided and
can be found packaged with the amplifier.
PLEASE RETAIN ALL FACTORY PACKAGING
FOR ANY FUTURE POSTAL TRANSIT.
CONTENTS:
Page
Thank You
1
1. Features and Innovations
2
2. Specifications
3
2.1 Technical specifications
3. Interface Elements
4-5
3.1 Front Panel
4. Recommended Usage
6
6. Trouble Shooting
7
7. Warranty
8
8. Declaration of CE
Conformity
9
CAUTION:
OBSERVE ALL SAFETY AND USAGE
INSTRUCTIONS TO AVOID POSSIBLE DAMAGE
TO EQUIPMENT AND EXPOSURE TO HAZARDS
(THIS SYMBOL UNIVERSALLY FLAGS CAUTION
NOTICES)
LETHAL VOLTAGES PRESENT AT SPEAKER
TERMINALS AND INSIDE THE AMPLIFIER;
ENSURE ALL WIRING IS SAFE AND CORRECT
BEFORE USE.
(THIS SYMBOL ALSO UNIVERSALLY FLAGS
ELECTRICAL HAZARDS)
DO NOT OPEN THE AMPLIFIER; LEAVE ALL
INTERNAL SERVICE OPPERATIONS TO A
QUALIFIED TECHNICIAN.
GM SERIES USER MANUAL
2
1. Features and Innovations
All our amplifiers have been designed to give the best possible performance for their
intended application and are based on our own uncompromising, time proven MOSFET designs.
These take advantage of components which will stand the test of time and give the best possible
performance in a small, exceptionally light weight package.
We only have the desire to provide our users with the best possible solutions and continue to
look for ways to improve upon them.
Amplifier features:
Design Optimised for Guitar Amplification.
Class AB, MOSFET amplifier topology.
..
An unprecedentedly powerful and stable Switch Mode Power Supply.
Designed without compromise, to exceed the performance of the previous linear supply models;
whilst offering a weight advantage rarely seen even in other SMPS amplifiers.
.
Soft Start Circuit.
The power supply is designed not to draw excessive current on startup - Prevents the 'thump' as
occasionally occurs with other equipment, from tripping fuses and breakers.
.
Protection against Short Circuit and Overheating.
.
Speaker Protection relay with delay to inhibit switch on thump.
The speakers are disconnected during power up/down.
Fully balanced XLR Inputs, which also accept 1/4” jack connectors..
.
Flying lead Output connection
For direct connections to drivers when installed in a loudspeaker cabinet.
.
Temperature regulated, High Speed Fan Cooling.
A high speed fan is utilised to ensure maximum reliability by allowing for far greater cooling
latitude (The amplifier vents hot air through rear connector panel).
.
0.775v / 0 dBu Inputs.
Input level optimised for guitar modellers and pre-amplifiers.
.
Cabinet Instillation Module Case Format.
A compact amplifier case designed for installation directly into speaker cabinets.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
— Reorient or relocate the receiving antenna.
— Increase the separation between the equipment and receiver.
— Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
— Consult the dealer or an experienced radio/TV technician for help.
3
GM SERIES USER MANUAL
2.1 Technical Specifications
GM 50
Number of Channels:
1
Watts Per Channel at - 16 Ω:
125
Watts Per Channel at - 8 Ω:
250
Watts Per Channel at - 4 Ω:
400 - -
-
-
Supply Voltage:
230V +/- 15%
Average Supply Current, Full Load:
4A
Mains Connector:
10A IEC
Frequency Response:
8–24,000 Hz
Signal to Noise Ratio
(ref. Full power 1kHz):
96 dB
THD (1kHz, full power):
0.06%
THD (20Hz - 20kHz, full power):
<0.1%
Slew Rate:
50 V/µs
Damping Factor (ref. 8R, 100Hz):
>400
Cooling Fan Arrangement:
(Temperature controlled dual speed fans)
2x 40mm
Input Level Sensitivity:
0.775v / 0 dBu
Dimensions (LWH - mm):
312 X 160 X 65
Weight:
2.43 Kg
Additional Features:
-
Operating Environment:
● The amplifier is designed for use in environments which protect it from rain, unusually
high air humidity and temperature.
● When installing in a speaker cabinet or another suitable space, ensure that the amplifier is
securely mounted using all available fixing points where possible. Improper instillation
may result in damage to equipment or injure personnel. Ensure that the location will not
expose the amplifier to spillage of liquids/drinks, sprays/vapours or high humidity. Ensure
the amplifier is installed in a place which is not subject to abnormally high temperatures
and maintain sufficient ventilation to prevent overheating.
● When used outside, apply similar caution; however be extra sure to ensure placement
accounts for changing weather conditions and that extreme wind/rain/heat will not find its
way to equipment.
● When taking any equipment from a cold environment (unheated storage, vehicles, etc),
into a warm one, allow the equipment time to acclimatise to the ambient temperature, as
condensation is likely to form in the amplifier, potentially causing it to malfunction if put
into service too soon.
Note: Our policy of continuous improvement may lead to the above specifications being
exceeded prior to documentation being updated.
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