Jam D1200 User manual

Professional Power Amplifier
Owner's Manual
for model: D1200 / D3600 / D4600 / D5400

SAFETY INSTRUCTIONS AND ADVICE
arning! Please read this user manual fully before using this product, and make sure you
follow all the instructions, and heed all warnings.
1. Unpack the carton and check the contents to ensure all parts
are present and undamaged. Should there be any damage,
consult your dealer and do not use the equipment.
2. Retain the carton and packing materials if for any reasons the
equipment must be returned to the supplier. The carton and
internal packaging is designed to protect the equipment in
transit.
3. o not open or modify the equipment.
4. The equipment should be used on a stable electrical supply
with supply voltage between 220V and 250V.
5. Intended for indoor use only, in a dry environment. This product
does not have an IP rating for outdoor use. If used outside the
equipment must be protected from water, and should be used
on an electrical supply with a suitable RC .
6. isconnect from the electrical supply when not in use, by
handling the plug only. o not pull on the cable.
7. o not switch off the equipment by twisting the blue power
connector. This connector is not load rated, and disconnecting
by this method may damage the contacts.
8. Before use, check the power cable is not damaged in any way.
If there are exposed inner cores, signs of burning, or any other
defects, you must replaced the power cable before user. Failure
to use a suitable power cable constitutes a fire and shock
hazard.
9. If the equipment is damaged in any way, or is subject to the
ingress of any fluids, immediately switch off the amplifier and
arrange to have it inspected by an engineer before operating
the equipment again.
10. o not block any ventilation openings, and only use in a well
ventilated area so that excess heat can be dissipated away
from the equipment. Before each use, check the ventilation
openings at the front and fans at the rear are not obstructed in
any way, and are clear of dust, water or other contaminants. o
not use in a closed cupboard or similar installation location.
11. Must be connected to an appropriate electrical outlet with a
protective ground connection. Only use an electrical cable with
the correct earth/ground pin. Check also the outlet has a
suitable current rating for the equipment. Failure to do so may
constitute a fire and shock hazard.
12. This equipment should only be used in a dry environment, and
should not be used where ingress of water or steam is possible
(such as swimming pool areas or kitchens) or where high
humidity could allow moisture inside of the amplifier.
13. Use the equipment at normal room temperature, and if used
outside, should be protected from direct sunlight to avoid
overheating of the equipment.
14. Volume controls should be set to zero before powering on the
unit, and then turned up as required to provide the required
level of sound whilst taking card to avoid damage to hearing.
15. o not install near heat sources such as radiators or cooking
equipment that produces heat.
16. In the case of any abnormal operation being detected such as
excessiive heat, smoke, unusual odour, turn off the equipment
immediately, and if safe to do so, remove the power cord from
the electrical outlet. The unit should be inspected by an
engineer to check if repairs are required before further use of
the equipment.
17. To reduce the risk of electric shock, do not remove any covers.
There are no user-serviceable parts inside, and servicing must
be done by qualified personnel only.
18. This equipment has been tested and found to be
in compliance with the Electromagnetic
Compatability Regulations 2016, and has the
UKCA marking to demonstrate compliance.
19. This equipment has been tested and found to
be in compliance with EMC irective:
2014/30/EU and LVD Directive: 2014/35/EU
and bears the CE Marking to demonstrate
compliance
20. This equipment has been tested and conforms to current RoHS
requirements for the control of hazardous substances

1. Introduction
Thank you for your purchase of thos -Series Power Amplifier. This series of amplifiers incorporate established technological expertise, and offer
high reliability, rock-solid stability, and superb acoustic characteristics—all in a trim, 1U-sized package.
Features:
•Modular design, each channel is fully separate and without any interference to other channels. Each module is individually fused and has
its own power supply.
•Compact 1U Rack design with high output power and low weight
•Switch mode power supply, intelligent limiter and full protection circuitry.
•High output power is achieved by making each module from a stereo amplifier running in bridge mode. It is not possible to bridge the
output channels on this range of amplifiers, as they are already bridged.
1-1 Front Panel Controls and functions
*Please note that front panel configuration may vary, with certain models having chassis designs that put the volume controls on the left hand side.
1. Channel A Volume Control Knob
2. Channel A Power Level Indicator
3. Channel B Power Level Indicator
4. Channel B Volume Control Knob
5. Air Inlet
6. Power Switch
1-2 Rear Panel Controls and functions
1. AC in Connector
2. Cooling fan outlet
3. Channel B signal output connector
4. Channel A signal input connector
5. Channel B Signal Link Out
6. Channel B Signal Input Connector
7. Channel A Signal Link Out
8. Channel A Signal input connector

1-3 System Connection
In standard operating mode, you can connect 2 audio sources, usually one for left channel and the other to for right channel. You
should connect the audio source to inputs A and B, The corresponding outputs should be connected to outputs A and B.
•Be sure to use a minimum impedance of 2 ohms per channel. (4 ohms recommended for best results)
•Check your cabling before powering on the amplifier to ensure there are no short-circuits or other cross wiring.
•o not connect/disconnect under load. Always turn down volumes before connecting or disconnecting any inputs or
outputs to avoid the possibilities of damage.

2. Operating Instructions
2-1 Start-up procedure.
1. Check all inputs and outputs are connected correctly as per
the above instructions, paying particular attention to the bi-
amp configuration offered on the amplifier.
2. Check out if local power system is correct. 220-250V AC with
protective ground/earth
3. Make sure the Power Switch is on OFF position. Turn down
the volumes to the minimum.
4. Power on the Audio source, and then power on the Amplifier.
Once the startup procedure is complete, turn the Volume
Control Knobs clockwise until the desired volume is reached.
2-2 Turn off procedure.
5. Turn the volume control knobs counterclockwise to the
minimum setting
6. Power off the amplifier
7. isconnect the mains supply from the electrical outlet if not
in use.
2-3 Troubleshooting:
Indicator(s) Possible cause
All the lines are
connected, but no
sound output
1. No power – check there is power,
and the power light is on.
2. A fuse on the internal board has
activated – contact your dealer for
advice.
3. Volume is not turned on
4. No input signal
5. Protection has been activated –
wait 3 seconds for protection circuit
to deactivae
Amplifier powers on, but
with warning lights or
protection is activated
1. Short-circuit load or damaged
2. Supply voltage is not stable, too
low or too high.
3. Heavy load exceeding maximum
amp power for too long.
No sound output when
in normal use.
1. The temperature is too high, the
device is under protection.
2. Poor electrical connection

3. General Specifications
Model D1200 D3600 D4600 D5400
Number of channels 2 2 2 2
Output Power (All Channels driven output power, TH =1%)
8Ω 350W×2 800W×2 1100W×2 1400W×2
4Ω 500W×2 1500W×2 2100W×2 2500W×2
2Ω 600W×2 1800W×2 2300W×2 2700W×2
Frequency Response (@8Ω) 20Hz-20kHz, ±0.3dB
Slew Rate 50V / us
TH +N < 0.1%
IM -SMPTE < 0.1%
SNR > 105dB
Crosstalk > 75dB
amping Factor > 800 (8Ω, 20Hz ~ 200Hz)
Sensitivity 1V
Input Impedance 20k (Balance), 10k (Unbalance)
Voltage Gain 35dB 38dB 40dB 41dB
Efficiency > 85%
Cooling Forced air cooling, air flow from the front to the rear.
Height 1U
Product imensions 483×375×44 (W× ×H, mm)
Packing imensions 530×530×100 (W× ×H, mm)
Net Weight 5.6 kg 7.0 kg 7.5 kg 8.0 kg
Gross Weight 7.2 kg 8.6 kg 9.1 kg 9.6 kg