Matrix Amplification GT Series User manual

1 GT SERIES USER MANUAL
Thank You
Congratulations on the purchase of your new
Matri Professional Power Amplifier.
Matri amplifiers are the result of many
decades of e perience in the design of
e ceptionally robust and reliable amplifiers.
They are designed to breathe life into your
sound, by controlling your speakers with
e acting authority through the
uncompromising delivery of clean,
undistorted power, from a package which is
smaller and lighter than you might e pect
for the performance it delivers.
This manual will help you to get the most
from your amplifier. For ma imum 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. Speci ications 3-4
2.1 Technical specifications
2.2 Basic Schematics
3. Inter ace Elements 5-7
3.1 Front Panel
3.2 Rear Panel
4. Recommended Usage 8-9
5. Cables, Making your own 10-12
6. Trouble Shooting 13
7. Warranty 14
8. Declaration o CE Con ormity 15
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.
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GT 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, e ceptionally 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.
Ampli ier eatures:
•Design Optimised or Guitar Ampli ication.
•
•Class AB, MOSFET ampli ier topology.
..
•An unprecedentedly power ul and stable Switch Mode Power Supply.
Designed without compromise, to e ceed the performance of the previous linear supply
models; whilst offering a weight advantage rarely seen even in other SMPS amplifiers.
.
•So t Start Circuit.
The power supply is designed not to draw e cessive 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..
.
•Speakon / 1/4” Jack Combi Outputs.
E panded output options for guitar amplifier use.
•.
•Stereo, Mono and Bridged (Mono) Modes selectable via rear panel switches.
Mode of operation indicated on front panel LED status display.
.
•In Mono Mode, only input A is used to eed channel pair A and B. Independent
control o each channel's output level remains unctional.
.
•Temperature regulated, High Speed Fan Cooling.
A new high speed fan is utilised to ensure ma imum 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 amplifier use.
.
•1U Case Format.
•Compact amplifier format designed to optimise the use of available racking space.
•
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3 GT SERIES USER MANUAL
2.1 Technical Speci ications
GT 1000FX
Number o Channels: 2
Watts Per Channel at - 16 Ω: 150
Watts Per Channel at - 8 Ω: 300
Watts Per Channel at - 4 Ω: 500
Watts Bridged (A and B) - 16 Ω: 650
Watts Bridged (A and B) - 8 Ω: 1000
Supply Voltage: 230V +/- 15%
Average Supply Current, Full Load: 5A
Mains Connector: 10A IEC
Frequency Response: 8–24,000 Hz
Signal to Noise Ratio
(re . Full power 1kHz):
96 dB
THD (1kHz, ull power): 0.06%
THD (20Hz - 20kHz, ull power): <0.1%
Slew Rate: 50 V/µs
Damping Factor (re . 8R, 100Hz): >400
Cooling Fan Arrangement:
(Temperature controlled dual speed ans)
2x 40mm
Input Level Sensitivity: 0.775v / 0 dBu
Dimensions (mm): 482 X 44 X 210
Weight: 3.7 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 mounting inside, ensure that the amplifier is securely bolted into a rack using all
available fi ing points where possible. Otherwise place on a surface where it cannot be
easily displaced, Potentially causing damage/injury. Ensure That the location will not
e pose 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.
●For temporary use outside, apply similar caution; however be e tra sure to ensure
placement accounts for changing weather conditions and that e treme 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: Ou policy of continuous imp ovement may lead to the above specifications being
exceeded p io to documentation being updated.
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GT SERIES USER MANUAL 4
2.2 Basic Schematics.
Modes:
Output Connections:
MATRIX AMPLIFICATION REV.1.17

5 GT SERIES USER MANUAL
.
3. Inter ace Elements, Front Panel.
..
(1) Power Switch
This switch controls the power supply to the amplifier. There is a short delay on power-up,
this is to avoid switch-on "thump" which could damage the loudspeakers.
.
(2) Gain Controls
The level of each Channel is individually adjusted by these controls.
Rotating these controls fully clockwise, results in no attenuation to the incoming audio signals.
.
(3) Indicator Section, Status:
a. Power Indicator
This indicator shows when the amplifier is on and is receiving power.
b. Parallel Mono Mode Indicator
.
This indicator shows if (parallel) MONO mode is selected on the rear panel.
For channel pair A and B only Input A will be used to drive both channels. Full
independent level control of the amplifier output stages is still possible via the Gain
controls.
c. Bridged Mono Mode Indicator
This indicator shows if Bridged mode is selected on the rear panel. It is most
important that this indicator is not illuminated unless bridged mode is required.
This is because when bridged mode is selected, Channel A will be out of phase
with Channel B. This will result in poor bass response and an unsatisfactory sound
if left and right outputs are used. In this mode Channel A controls the output level..
d. Protect Indicators
These indicators light briefly during the power up cycle and also light should a
fault occur. Illumination of the protect indicators, shows that the output of the
amplifier has been disconnected by means of an internal relay to protect connected
speaker systems from being damaged by the fault.
(4) Indicator Section, Signal levels:
a. Output Level Display
These show the (Peak) output level of the amplifier for each channel, in both
Stereo and Mono modes. It is useful to note for trouble shooting, that the sensors
for the Output Level Display, detects levels after the output relays. Therefore if the
display is operating, a signal is present at the speaker sockets when driven above a
threshold of appro imately -9db. Also note that when operating signal level is low,
the led may not illuminate. In this instance observe signal presence either by
increasing volume until led illuminates, or listen to speaker output to verify correct
operation.
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GT SERIES USER MANUAL 6
3. Inter ace Elements, Rear Panel.
.
(5) Cooling Fan Outlet
.
Hot air e its here. Make sure all rear (and front) ventilation paths are free
from obstruction and air flows freely, otherwise the amplifier will trip into thermal
protect mode prematurely and in some e treme circumstances damage may occur.
(6) Output Connectors
.
The Output sockets are Neutrik Speakon / 1/4” combi connectors. They accept Both Neutrik
NL2FC & 1/4” jack plugs (NL4FC accepted, however only terminal pair 1 carry signals). Avoid
inferior alternatives, as they may present numerous hazards due to less than ideal construction.
When inserting speakon plugs turn clockwise until you hear it click; This ensures correct
connection has been made. To remove, pull back the levered tab and turn anti-clockwise.
Ready-made, sensibly priced, quality interconnection leads suitable for use with the amplifier
should be easy to source. However, with sufficient skill, it is possible to make/modify leads for
the task. proceed to Chapter 5. - “Cables, Making your own”.
.
●Only the first two pins (+1 and -1) are used in this amplifier.
●When utilising the 1/4” output option the centre pin is connected to +1 & the outer sheath
is connected to -1.
.
●For STEREO/MONO operation, unmodified “off the shelf” cables will usually work fine.
.
●For BRIDGED MONO mode, Output is e clusively available from OUTPUT X, do not use at
any other time.
.#
NOTE: - Generously Heavy Duty Speaker Cable should be used to ensure
optimal performan e of the amplifier and loudspeaker system. Ex essively
thin ables should be avoided as they ompromise system performan e
and may present a fire hazard. The able should be at least omparable to
good heavy duty 13 amp mains flex. Additionally, unduly long able runs
should be avoided where possible.
.
CAUTION: - Great are should be taken to ensure ables are in good
ondition and onne tors are wired orre tly and safely as short ir uits
and intermittent onne tions may ause damage to equipment and in
extreme ir umstan es a fire hazard may o ur. Exposed
onne tions/bare wire present an ele tro ution hazard. Never use
in ompletely housed Speakon onne tors to make onne tions
Cable testers whi h allow you to hook up both ends of the able and
onfirm orre t wiring are available and pur hasing one as a standard tool
for debugging and partial safety assuran e is re ommended.
.
CAUTION - 1/4” Outputs: - When using This output feature extra are must be taken,
as it is possible to both short & ome into onta t with the amplifiers output at the far
end of the able. Also be sure -not- to mix up signal & speaker leads when using 1/4”
onne tions ! Finally use insulated/plasti housed onne tors for outputs as the ja ket
is live & is NOT a ground onne tion !
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7 GT SERIES USER MANUAL
(7) Input Signal Sockets
.
These are combined female XLR and 1/4" jack sockets.
They provide a number of connection possibilities, including the industry standard Balanced
XLR system, which helps ensure interference and noise free connections between equipment.
Ready-made, sensibly priced, quality interconnection leads suitable for use with the amplifier
should be easy to source. However, with sufficient skill, it is possible to make/modify leads for
the task. Proceed to Chapter 5. - “Cables, Making your own”.
.
(8) Output Mode Selector
.
STEREO, MONO or BRIDGED (mono) Output can be selected using this switch.
Take care to ensure the correct mode for your application is selected.
.
●In Stereo mode, channels A and B can be operated independently, when fed
with separate input signals.
.
●In (parallel) Mono mode, Input A is connected to both amplifier channel A
and B. Input B is not used. Full independent level control over each amplifier
output channel remains possible.
.
●In Bridged (mono) modes, the input from channel A is fed out of phase to
channel B.
Note: B idged Output X is used exclusively fo this mode, do not use at
any othe time.
(9)Power Connection
.
Mains power is supplied to the amplifier by a standard 10 Amp IEC mains socket.
An appropriate mains lead is supplied with the amplifier.
Note: The amplifie equi es a stable powe supply to function as intended. Ensu e
that the powe sou ce (mains powe supply, gene ato , etc.) is suitable fo this
application and adequate powe is available. Poo ly selected powe sou ces esult
in sub-optimal pe fo mance, inc eased likelihood of t ipping b eake s, blowing
fuses and in ext eme situations damage to equipment may occu .
Should the fuse in the mains lead blow fo any eason, it must be eplaced
with a fuse of the co ect ating. This should be 13 amps fo the models listed in
this manual. Howeve , if the e is any eason to believe that a malfunction caused
the fuse to blow, stop using the equipment immediately and take the amplifie to
an autho ised se vice enginee fo se vicing.
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GT SERIES USER MANUAL 8
4. Recommended Usage:
.To ensure your speaker and amplifier system functions optimally, it is advised to read
through everything covered in this manual.
Safety precautions and appropriate usage recommendations for specific connections and
features are noted in the previous section.
4.1 Matching Speakers to the ampli ier:
.
When matching loudspeakers appropriately to the available amplification, it is generally best
to ensure that their power rating in watts rms (or aes) is more or less the same for the rated
impedance. For instance if a Speaker is rated at 600w Rms/aes (not peak, etc) at 8 ohms then
ideally it should be matched to an amplifier channel rated to supply 600w rms at 8 ohms for
continuous music usage.
For certain specialist applications (cinema, theatre, public address, etc) it is occasionally
specified that additional amplifier headroom should be allowed for. This usually means that an
amplifier channel power rating twice that of the speakers is used (a 1200w amplifier channel
connected to a 600w speaker system). The amplifiers are then usually driven to no more than
-3db of their potential. This practice is not recommended to anyone unsure of the implications.
Some degree of tolerance in matching speaker wattage, to that of the amplifier is generally
acceptable. Safe limits are dependent on many factors and there is no simple formula to
determine the acceptable range. Determination of safe use is down to user discretion. If in
doubt, consult a qualified technician for advice.
There are however some signs which suggest that the loudspeaker and amplifier system is
being driven beyond acceptable limits. Firstly, where the speakers power rating is larger than
that of the amplifier channel, the clip or peak lights will illuminate repeatedly on the amplifier if
it is being driven too hard, this will often also result in an audible increase in distortion of the
sound from the speaker system. Where this happens, the volume level should be reduced.
Where the amplifier channel can deliver significantly more power to the speaker system than
it is rated for, even greater care should be taken, as it is not always be clear when the power
handling of the speaker system has been e ceeded. However certain artefacts will usually
present themselves before the amplifier reaches full output. E ceeding the power handling of
the speaker system will usually result in an audible rise in distortion and other artefacts.
E ceeding a safe level for a prolonged period of time may result in permanent damage to the
speakers and under e treme circumstances the amplifier also.
E treme mismatches in amplifier and speaker power rating are not recommended. As the
possible combinations can very easily result in damage to both amplifier and speaker system.
When connecting multiple speaker systems to the same amplifier channel, it should be noted
that this halves the impedance load seen by the amplifier. All speakers connected should be of
the same impedance rating. For instance if two 8 ohm rated cabinets are connected in parallel to
the amplifier this would result in (8 ohms divided by 2 cabinets) 4 ohms.
Usually this will result in an appro imate doubling of power delivered from the amplifier to
the speakers. To determine the power level the speakers will be subjected to, consult the
specifications in section 2 of this manual. Also note that because the power is dissipated across
two speaker systems, that the power is shared between them. Therefore 600w from the
amplifier at 4 ohms becomes 300w seen by each 8 ohm speaker connected in parallel on that
amplifier output channel. Ensure that the speaker system remains appropriately matched as
discussed previously.
Although some of the amplifier models are rated for 2 ohms usage it is not generally
recommended that speaker loads less than 4 ohms are presented to any given amplifier
channel. As performance can sometimes be degraded. Abuse from connecting inappropriate
loads can damage both the amplifier and speaker systems. With amplifier models which offer a
bridged mode of operation, note that minimum impedance normally doubles to 4 or 8 ohms
depending on the model used. Also note the custom wiring required for connecting the speakers
in bridged mode. Using Standard connections will result in e ceptionally poor performance.
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9 GT SERIES USER MANUAL
4.2 Using Bridge Mode:
Only use this mode of amplifier operation where the power available from one amplifier
output channel alone, is not sufficient for the connected speaker system.
This mode works by using two amplifier output stages together in series, using specialised
internal amplifier circuitry. The following points about this mode of operation should be
considered with care.
●Firstly, Output X is e clusively used for this mode, do not use at any other
time & do not use Outputs A or B when this mode is enabled.
●Secondly, in bridge mode the voltage available increases significantly.
Be sure that any speaker system connected can handle the voltages
involved. Any components used in the speaker system should be rated to at
least 500v, otherwise a failure may occur. Note that the minimum
impedance doubles for bridge mode, from 4 ohms to 8 ohms; this must be
observed to avoid the possibility of damage to the amplifier and poor
performance.
●Thirdly, In Bridged mode it should be noted that the negative feed for the
speaker system is no longer connected to ground; it is connected to the
LIVE end of the second amplifier channel. None of the speaker output
terminals should be connected to ground, otherwise damage to the speaker
system and the amplifier may occur.
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GT SERIES USER MANUAL 10
5. Cables, Making your own.
5.1 Signal Level Leads.
Standard Audio Connectors:
Cable Maker Table:
Cable Connections:
Cable Type: Ground/Screen Red/Central Cable White
balanced to balanced 1 to 1 2 to 2 3 to 3
balanced to unbalanced 1 to 1 2 to 2 3 tied to 1
unbalanced to unbalanced 1 to 1 2 to 2 -
Note: Shell Ground tab on XLR connectors is usually tied to ground at pin 1.
Choosing a Cable:
For balanced connections, use a good quality metal braid screened cable with two inner wire
cores; this will usually be clearly marketed as pro audio/microphone signal cable.
For long cable runs in e cess of 6m/20ft, try to use cables with lower capacitance ratings, to
minimise any loss of sound quality. Keep cable runs short where possible, however be sure allow
a little bit of slack in the length of cable used to make the lead. Stretched, overstressed cables
tend to break at the most inconvenient moments.
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11 GT SERIES USER MANUAL
5.2 Speaker Leads.
Speakon Connectors, 4 Pin:
Cable Maker Table:
Cable Connections:
Cable Type: + and - + and -
Single Channel, 2 core lead.
Use in Mono / Stereo modes.
1 to 1-
Single Channel, 4 core lead.
In this application, making use of e tra cores.
Outputs A and B - 4 ohms minimum load
Bridge Output X - 8 ohms minimum load
1 to 1 ONLY
(cables paired)
-
Choosing a suitable Cable:
Cable Length: Recommended Cable Gauge or Speaker Load:
M: FT: 4 Ohms 8 Ohms 16 Ohms
Power Loss % = .13 – .25
DF = 107 – 86 (67)
DF – Damping Factor est.
Power Loss % = .13 – .62
DF = 215 – 105 (75)
DF – Damping Factor est.
Power Loss % = .07 - .62
DF = 430 - 127 (86)
DF – Damping Factor est.
wires AWG mm2wires AWG mm2wires AWG mm2
1 3 2 12 2.5 2 12 2.5 2 12 2.5
Rec Minimum: 2 16 1.3 2 16 1.3 2 16 1.3
3 10 4 12 2.5 2 12 2.5 2 12 2.5
Rec Minimum: 2 12 2.5 2 16 1.3 2 16 1.3
6 20 4 10 5 4 12 2.5 2 12 2.5
Rec Minimum: 4 12 2.5 2 12 2.5 2 14 2
10 33 - - - 4 10 5 2 10 5
Rec Minimum: 4 10 5 2 10 5 2 12 2.5
15 49 - - - 4 10 5 2 10 5
Rec Minimum: - - - 2 12 2.5 2 12 2.5
24 79 - - - - - - 4 10 5
Rec Minimum: - - - 4 10 5 2 10 5
30 98 - - - - - - 4 10 5
Rec Minimum: - - - - - - 4 12 2.5
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GT SERIES USER MANUAL 12
The previous table is a rough guide for recommended cable gauges.
It is important to use sufficiently heavy duty cables (try to use at least 2.5mm2 ) and plan the
use and instillation of sound equipment such that the speaker cables in particular are kept short
where possible (under 6m/20ft should provide enough fle ibility to cover most applications).
.
Speaker cables are usually made with copper to act as the conductor carrying power.
Although it is well suited to this task, it is still not perfect and has an undesirable property in the
form of resistance. This factor becomes a problem where cables are long and also of insufficient
thickness.
.
Cables intended for speaker use are commonly found in sizes of 1.5, 2.5, 4mm2 .
Unfortunately, people still advertise their cables with a confusing mi of different standards.
Cables are also measured in the diameter of the copper core (often confused with mm2 ), AWG
and a few others. Rough conversion for AWG and Diameter to mm2 are included in the tables on
the previous page.
.
Poor cable selection results in power being lost in the speaker cable as heat, and also can
dramatically reduce the amplifier's 'Damping Factor' – this is how tightly the speaker system is
controlled by the amplifier. Greatly reduced damping results in reduced sound quality; Typically
bass starts to lack the snappy bite on kick drums and toms, and a booming drone occurs
through the driver failing to stop moving when the sound has passed.
.
Reducing the total resistance of the speaker load will demand heavier, shorter cables to be
used in order to keep the losses and degradation to a minimum. Loads of less than 4ohms are
not generally recommended, even for amplifiers which will support them, as it puts the amplifier
under considerable stress and also dramatically reduces the damping factor. Typically a 2 ohm
load will compromise damping factor enough to audibly degrade the performance of the speaker
system.
.
Consult the tables on the previous page, to determine a suitable cable gauge for your
required cable length and speaker impedance.
Notes:
●The tables quote the gauge/a ea of the coppe fo each individual wi e; the 'Wi e' column
assumes in stating '2' wi es – that one wi e to each te minal of the speake (+/-) is used.
'4' wi es assumes that a with a 4 co e cable, that the wi es a e pai ed to make 2
connections to one pai of te minals.
●Take ext a ca e in ensu ing that the + and - connections do not get eve sed in the leads.
Whilst this will not usually cause damage, it will esult in poo pe fo mance. When a cable
feeding one speake cabinet is wi ed backwa ds, it will esult in pa tial cancellation of
sound between the two speake s. Usually this p esents itself as educed bass levels and
indistinct ste eo image.
●Pu chase of a cable teste specifically fo audio leads is ecommended; as this makes it
easy to identify and detect p oblems in wi ing which may othe wise slip by
unnoticed.
●NEVER use light duty able whi h has not been designed for high
power audio use ('bell' wire, at 5 ables, et ); this will result in
poor performan e and an present a fire hazard.
●NEVER Pair together (-) negative/'ground' ables from different
amplifiers, this will result in amplifier malfun tion and an easily
result in permanent damage to speaker systems, amplifiers and
asso iated equipment.
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13 GT SERIES USER MANUAL
.
6. TROUBLE SHOOTING.
.
(1) ALWAYS:
●Ensure the amplifier has no less than 4 Ohms worth of loading a ross ea h
hannel for Stereo/Mono modes.
●Ensure Bridge Mode (if used) is utilised via Output X and is loaded with no less
than 8 Ohms.
●Ensure wiring is safe and orre t.
.
(2) NORMAL ARTIFACTS:
●When heavily driven, the amplifier itself may make a noticeable hissing sound in relation to the
supplied signal. This is a normal phenomenon relating to the behaviour of certain components
which vibrate slightly under the high powers involved.
●The Fans on the GT SERIES may appear to generate more noise than earlier models, they run at
higher speeds to increase the cooling efficiency of the amplifiers. They will also increase their
speed when the amplifier is under load.
.
(3) THE POWER LIGHTS DO NOT ILLUMINATE
1. Check that the mains supply is tu ned on.
2. Check that the mains switch is tu ned on.
3. Check Mains lead fo damage & check fuse. Replace lead if damaged, eplace fuse if blown.
4. Check inte nal fuse. Replace if blown.
(same type of fuse specified/installed must be used, do not change)
5. If fuse e-blows efe to se vice pe sonnel.
6. If fuse has not blown, but the amplifie still malfunctions, efe to se vice pe sonnel.
.
(4) THE AMPLIFIER IS WORKING, BUT OUTPUT VOLUME IS LOW
.
●Check the signal f om the input sou ce and signal cables. The amplifie s a e designed to ope ate at
an input voltage of 0.775V. If the intended signal sou ce is above this, efe to qualified se vice
pe sonnel fo a mino modification.
.
(5) AMP OUTPUT LEVEL INDICATORS ARE WORKING, BUT NO SOUND IS COMING OUT
.
●Check Speakon connecto s a e secu ely attached.
(The amplifie must be ope ating if the output level indicato s a e wo king)
.
(6) THE AMPLIFIER IS GIVING A LOWER OUTPUT THAN NORMAL, WITH DISTORTION
.
●The p otection ci cuits (cu ent clamps) a e ope ating. Check all leads fo sho t-ci cuits. T y
anothe set of leads and loudspeake s.
.
(7) THE AMPLIFIER IS OVERHEATING
.
●Check that the fan is not obst ucted with deb is, and is otating f eely.
●Check speake leads fo sho t ci cuits.
●Check to see that amplifie output 'negatives' have -not- been connected togethe in bundled cable
looms - especially in b idge mode
.
I any o these, or other symptoms persist, Please contact us with the details below or help,
advice and service:
Contact Details: Address:
Email: support@matri -amplification.com
MATRIX AMPLIFICATION LIMITED,
Matri Amplification,
Little Castle Farm,
Pen-Y-Park Road,
Usk,
United Kingdom,
NP15 2BX.
If the amplifie is to be shipped, use facto y packaging o othe secu e method as t ansit
damage is not cove ed by the wa anty.
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GT SERIES USER MANUAL 14
Full Two Year Warranty
Summary o Warranty
.
Matri Amplification Limited, warrant to you, the ORIGINAL PURCHASER of each Matri
Power Amplifier, for a period of 2 (two) years from the date of purchase, that the amplifier is
free from defects in materials and workmanship and we further warrant the new Matri
Amplifier, regardless of the reason of failure e cept as e cluded in this warranty.
Items Subject to Exclusion rom this Warranty
.
This Matri Amplifier Warranty is in effect only for failure of a new Matri Amplifier which
occurred during the warranty period. It does not cover any product that has been damaged
because of any misuse be it intentional or otherwise, accident, negligence, or loss which is
covered under any insurance.
What the Warranter Will Do
.
We will remedy any defect, regardless of the reason for failure (e cept as e cluded above),
by repair or replacement. Warranty work can only be performed at our authorised distributors or
at Matri Amplification Limited. We will remedy the defect and ship the product from the service
centre or our own factory within a reasonable time after receipt of the defective product. All
e penses in remedying the defect, including freight costs from ourselves to you (within mainland
UK) will be borne by us. You must bear the costs of shipping the product to our authorised
service centre or factory.
How to Obtain Warranty Service
.
You must notify us of your need for warranty service not later than the e piry of your
warranty. The amplifier must be shipped in a factory pack, which if required can be obtained
from us at a modest charge. The amplifier must be sent to us carriage paid and insured.
Corrective action will be taken within a reasonable time from the date of receipt of the
defective product by us or our authorised service center. If repairs made by us or our authorised
service center are not satisfactory, contact us immediately.
Warranty Alterations
..
No person has the authority to enlarge, amend or modify this warranty. The warranty is not
e tended by the length of time which you are deprived of the use of the amplifier. Repairs and
replacement parts will only carry the une pired portion of this warranty.
Design Changes
.
Matri Amplification Limited has a policy of continuous improvement to designs without
notice and with no obligation to make corresponding changes in products previously
manufactured.
Your Statutory Rights are Unaffected by this Warranty
MATRIX AMPLIFICATION REV.1.17

15 GT SERIES USER MANUAL
Declaration o CE Con ormity
.
Issuers Name and Address: Andrew Hunt,
MATRIX AMPLIFICATION LIMITED,
Cordes House, Factory Road, Newport, Gwent, United Kingdom.
NP20 5FA
Products: GT800FX
Equipment Type: Commercial Audio Power Amplifiers.
Sa ety Standard:
AMD1: 2005 and IEC
60065: 2001 7th Ed.
Safety Requirements - Audio Video and Similar Electronic Apparatus.
EMC Standards:
EN 61000-4-2:2001 Electrostatic Discharge Immunity (Environment E2-Criteria B, 4k V Contact, 8k V Air Discharge).
EN 61000-4-3:2006 Radiated, Radio-Frequency, Electromagnetic Immunity (Environment E2, criteria A).
EN 61000-4-4:2007 Electrical Fast Transient/Burst Immunity (Criteria B).
EN 61000-4-5:2006 Surge Immunity (Criteria B).
EN 61000-4-6:2006 Immunity to Conducted Disturbances Induced by Radio-Frequency Fields (Criteria A).
EN 61000-4-11:2001 Voltage Dips, Short Interruptions and Voltage Variation.
EN 55103-1:1997 Electromagnetic Compatibility - Product Family Standard for Audio, Video, Audio-Visual and
Entertainment Lighting Control Apparatus for Professional Use, Part 1: Emissions.
EN 55103-1:1997 Magnetic Field Emissions-Anne A @ 10 cm and 20 cm.
EN 55103-2:1997 Electromagnetic Compatibility - Product Family Standard for Audio, Video, Audio-Visual and
Entertainment Lighting Control Apparatus for Professional Use, Part 2: Immunity.
EN 61000-3-2:2005
and AMD1: 2008
Limits for Harmonic Current Emissions (equipment input current less than or equal to 16 A per
phase).
EN 55022:2006 Limits and Methods of Measurement of Radio Disturbance Characteristics of ITE: Radiated, Class
B Limits; Conducted, Class A.
EN 61000-3-3:2008 Limitation of Voltage Fluctuations and Flicker in Low-Voltage Supply Systems Rated Current less
than or equal to 16A.
Declaration:
I certify that the product identified above conforms to the requirements of the EMC Council
Directive 89/336/EEC as amended by 92/31/EEC, and the Low Voltage Directive 73/23/EES as
amended by 93/68/EEC.
Signatories:
Andrew Hunt,
Managing Director.
Date o Issue:
2 April 2012.
REV.1.17 MATRIX AMPLIFICATION