XTR Series Power Amplifiers

XTR Series Power Amplifiers
XTR Series
Power Amplifiers
User Manual
CLIP
CLIP
PROTECT
PROTECT
POWER
I
O
POWER
CH A
CH B
CLIP
CLIP
PROTECT
PROTECT
POWER
I
O
POWER
CH A
Order codes:
AMP50 - XTR 1000
AMP51 - XTR 1500
CH B
Safety advice
WARNING
FOR YOUR OWN SAFETY, PLEASE READ THIS USER MANUAL
CAREFULLY BEFORE YOUR INITIAL START-UP!
• Immediately upon receiving this product, carefully unpack the carton and check the contents to ensure that all the parts are present.
• Before initial start-up, please make sure that there is no damage caused during transportation.
• Should there be any damage, consult your dealer and do not use the equipment.
• Retain the carton and all packaging materials.
• In the event that the equipment must be returned to the supplier, it is important that the equipment is returned in the original carton and packaging.
• To maintain the equipment in good working condition and to ensure safe operation, it is necessary for the user to follow the safety instructions and warning notes written in this manual.
• Please note that damages caused by user modifications to this equipment are not subject to warranty.
CAUTION!
KEEP THIS EQUIPMENT
AWAY FROM MOISTURE,
RAIN AND LIQUIDS, AND
OUT OF DAMP/HUMID
ENVIRONMENTS
CAUTION!
TAKE CARE USING
THIS EQUIPMENT!
HIGH VOLTAGE-RISK
OF ELECTRIC SHOCK!!
IMPORTANT:
The manufacturer will not accept liability for any resulting damages caused by the non-observance
of this manual or any unauthorised modification to the equipment.
• Never let the power cable come into contact with other
cables. Handle the power cable and all mains voltage
connections with caution!
• Never remove warning or informative labels from the
equipment.
• Do not open or modify the equipment.
• Do not connect this equipment to a dimmer-pack.
• Do not switch the equipment on and off in short intervals,
as this will reduce the system’s life.
• Only use the equipment indoors.
• Do not expose to flammable sources, liquids or gases.
• Always disconnect the power from the mains when
equipment is not in use or before cleaning! Only handle
the power cable by the plug. Never pull out the plug by
pulling the power cable.
• Make sure that the available voltage is between 220V/240V.
• Make sure that the power cable is never crimped or damaged. Check the equipment and the power cable periodically.
• If the equipment is dropped or damaged, disconnect
the mains power supply immediately. Have a qualified
engineer inspect the equipment before operating again.
• If the equipment has been exposed to drastic temperature
fluctuation (e.g. after transportation), do not switch it on
immediately. The arising condensation might damage the
equipment. Leave the equipment switched off until it has
reached room temperature.
• If the product fails to function correctly, discontinue use
immediately. Pack securely (preferably in the original
packing material), and return to your dealer for service.
• Only use fuses of same type and rating.
• Repairs, servicing and power connection must only be
carried out by a qualified technician. THIS UNIT CONTAINS
NO USER SERVICEABLE PARTS.
• WARRANTY: One year from date of purchase.
OPERATING DETERMINATIONS
If this equipment is operated in any other way, than those described in this manual, the product may suffer damage and the warranty becomes void. Incorrect operation may lead to danger e.g: short-circuit, burns and electric shocks etc.
In case of malfunction this unit should be returned for service or inspection.
Do not endanger your own safety and the safety of others!
Incorrect installation or use can cause serious damage to people and/or property.
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XTR Series Power Amplifiers User Manual
2
Product overview
XTR Series Power Amplifiers
Professional power amplifiers
offering superior reliability and
performance, to suit a variety of applications.
CLIP
CLIP
PROTECT
PROTECT
POWER
I
O
POWER
CH A
•Short circuit, overload and thermal protection
•Fan cooled
•Ground lift
CH B
CLIP
CLIP
PROTECT
PROTECT
POWER
I
O
POWER
CH A
CH B
In the box: 1 x power amplifier,
1 x power cable
& 1 x user manual
Specifications
Output power 1kHz,
THD+N ≤0.5%
XTR 1000
XTR 1500
Stereo 8Ω
2 x 350W
2 x 500W
Stereo 4Ω
2 x 500W
2 x 750W
Frequency response
20Hz to 20kHz±1.0dB
Input sensitivity
0.775V / 1.0V / 1.44V
S/N ratio (a-weighted, RMS)
>95dB
Crosstalk at rated power output (8Ω at 1kHz)
>65dB
Damping factor ([email protected]Ω)
Protection circuits
>150dB
Thermal, short circuit, overload, DC fault protection & AC power supply fuse
LED indicators
Connectors
Power, protect & clip
Inputs: 2 x phono sockets, 2 x 1/4” jack sockets
Outputs: 2 x locking speaker connectors, 2 x binding posts
Cooling system
Low noise, variable speed fans
Power supply
Dimensions (H x W x D)
AC240V/50Hz
87 x 484 x 297mm
87 x 484 x 297mm
Weight
10.5kg
10.75kg
Order code
AMP50
AMP51
www.prolight.co.uk
XTR Series Power Amplifiers User Manual
3
Product overview
297mm
264mm
XTR 1000 & XTR 1500
dimensions
87mm
426mm
484mm
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XTR Series Power Amplifiers User Manual
4
Technical specifications
XTR 1000 & XTR 1500 front panel
01
01
CLIP
CLIP
PROTECT
PROTECT
POWER
I
O
POWER
CH A
05
04
01 - Clip LEDs - These LEDs flash amber to indicate when
the output of the amplifier has reached the maximum,
and is right on the edge of clipping. Clipping is bad for
speakers and should be avoided. It is okay if the LED
blinks occasionally. It means that the transient peaks of
the music are just hitting the full output of the amplifier.
02 - Gain control - These two knobs control the levels of
Channels 1 and 2. Usually, these controls are set all the way up. You might turn them down slightly if you have high-efficiency speakers. Also, you could use them
to control the level of line-level sources such as a CD
player connected directly to the amplifier without a pre-amplifier or mixer. 02
CH B
03
02
04
After you have set the levels for the mixer (or other signal
source), adjust the level controls on the amplifier as the
final adjustment to set the overall volume for the system. In stereo and mono mode, use both level controls to control the levels going to each speaker.
03 - Power LED - This LED illuminates when the amplifier is switched on.
04 - Protect LED - If this LED is illuminated during operation,
one of the protection circuits is active. Please take the
amplifier out of operation and have it tested.
05 - Power switch - Press this switch to power the amplifier on.
XTR 1000 & XTR 1500 rear panel
OUTPUTS
(4Ω min.)
MAINS
POWER AMPLIFIER
RIGHT
LEFT
240V~50Hz
Serial no.
INPUTS
CAUTION!
Remove the mains power before opening
the unit. No user serviceable parts inside,
refer to qualified service personnel.
Protect the unit against moisture and heat.
Operating temperature range 0-40°C.
GROUNDLIFT
B
01
A
02
01
LIFT
T6.3 A
240V~50Hz
GND
05
03
01 - ¼” jack inputs - These inputs allow you to connect
¼”unbalanced jack plugs
02 - Phono inputs - These inputs allow you to connect
unbalanced phono plugs
03 - There are three ways of connecting your speakers: Locking speaker connectors, ¼” jack or binding posts.
The connectors are wired in parallel. (e.g. Channel 1
binding post, jack and locking speaker connectors are in
parallel and the same for channel 2).
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!
04
04 - Power cable socket - This is where you connect the
detachable power cable. Connect the other end to a
240V AC outlet.
05 - Ground lift switch - This switch allows the signal ground
or chassis ground to be separated in case of a ground
conflict. For the highest safety of the equipment, it is
recommended to keep the “ground lift switch” in the
GND position. In case of a ground conflict please set the
ground lift switch to GND LIFT.
XTR Series Power Amplifiers User Manual
5
Operating instructions
Rack installation
The EP Series is built for 19” racks. The rack you use should be a ‘double door rack’ where you can open
the front and rear panel. When mounting the amplifier into the rack, please make sure that there is
enough space around the amplifier.
Be careful when mounting the amplifier into the rack. Put the heaviest products into the lower part of the rack. Be aware that fastening the amplifier with four screws on the front panel is not enough.
If the racks are being transported or used for mobile use, additionally fasten the products by
connecting the rear brackets with the side or ground bars of the rack. In this way, the amplifier
cannot be pushed backwards. The front panel is not designed to absorb acceleration forces
occuring during transportation.
Inputs
Short cables runs improve the sound quality remarkably. Input cables should be short and direct,
since high frequencies will mostly be absorbed if the cables are unnecessarily long. Besides that a
longer cable may lead to humming and noise problems. If the cable runs are unavoidable, you should
use balanced cables.
Outputs
The high damping factor of your amplifier supplies a clear sound reproduction.
Unnecessarily long and thin cables will influence the damping factor and thus the low frequencies in a negative way. In order to safeguard good sound quality, the damping factor should lie around 50.
The longer a cable has to be the thicker it should be.
Connect your speaker systems via the locking speaker connectors or the Bannana/Screw combination
(red+, black-)
Connection to the mains
Connect the amplifier only after having made sure that the correct voltage (240V) is supplied and that
the ground cable is earthed. This product falls under Class 1. Do not detach the ground cable.
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XTR Series Power Amplifiers User Manual
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Operating instructions
Operation
After having connected your amplifier to the mains, turn both gain controls counter clockwise to the
“min” position. The last product to be switched on is amplifier. The “ON” and “PROTECT” LED lights up
now. If it does not, check if the amplifier is connected to the mains correctly.
After the turn on delay the speakers are activated (PROTECT-LED is off).
After having set the volume controls of the pre-amplifier to the “OFF” position, turn the gain controls of
your amplifier to mid-position. Now adjust the volume with the gain controls CH A and CH B.
All important operating modes of the amplifier are arranged on the front panel.
-20 dB to 30dB - Output level
Clip - Short circuit or impedance too low or signal distorted
Protect - Active during stabilisation period after switching on or when one of the protective circuits is activated
If you want to switch off the system, switch off the amplifier first in order to avoid acoustic shocks on the speakers.
Problem Chart
Problem
Cause
Solution
No power
The power cable is not connected
Check the power cable and any extension cables
No sound
The power cable of the respective product is
not connected correctly or not at all.
Check the power cable and if the plugs are properly
connected with the sockets
The connection socket or the plug is dirty
Clean the socket and/or the plug
Noise
The input signal is too strong
Reduce the input signal via the gain control
Fan does not work,
LEDs do not light up
The power cable is not connected
Connect the power cable
DC voltage on input
Switch amplifier off and have the product checked
by a service technician
Amplifier overheats due to obstruction
Clean the fan grill
Impedance of speakers too low
Ensure minimum 4Ω load
Short circuit in speaker connection or in speakers
Check speakers and connections
Protect LED lights
up permanently
CAUTION! - DANGER TO LIFE
DISCONNECT FROM THE MAINS BEFORE
STARTING MAINTENANCE OPERATION
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XTR Series Power Amplifiers User Manual
7
Operating instructions & WEEE notice
Cleaning and Maintenance
We recommend a frequent cleaning of the product. Please use a soft lint free and moistened cloth.
Never use alcohol or solvents.
There are no serviceable parts inside the product except for the fuse. Maintenance and service
operations are only to be carried out by authorised dealers.
Replacing the fuse
Only replace the fuse with a fuse of the same type and rating.
Before replacing the fuse, unplug the mains cable.
Procedure:
Step 1: Open fuse holder on the rear panel with a screwdriver.
Step 2: Remove the old fuse from the fuse holder.
Step 3: Install the new fuse in the fuse holder.
Step 4: Replace the fuse holder in the housing.
Should you need any spare parts, please use genuine parts.
Should you have any further questions, please contact your dealer.
Correct Disposal of this Product
(Waste Electrical & Electronic Equipment)
(Applicable in the European Union and other European countries
with separate collection systems)
This marking shown on the product or its literature, indicates that it should not be disposed of
with other household wastes at the end of its working life. To prevent possible harm to the environment or human health from uncontrolled waste disposal, please separate this from other
types of wastes and recycle it responsibly to promote the sustainable reuse of material resources.
Household users should contact either the retailer where they purchased this product, or their
local government office, for details of where and how they can take this item for environmentally
safe recycling.
Business users should contact their supplier and check the terms and conditions of the purchase contract. This product should not be mixed with other commercial wastes for disposal.
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XTR Series Power Amplifiers User Manual
8
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