warning: this appliance must be earthed

warning: this appliance must be earthed
USER MANUAL
MG-TA1000
POWER AMPLIFIER
INDEX:
INTRODUCTION
SAFETY INSTRUCTIONS
OPERATING PRECAUTIONS
FEATURES OF PANAL CONTROLS
FRONT & REAR PPANEL DISPLAY
CONNECTING INPUTS
SPEAKER CONNECTIONS
INTRODUCTION :
Taking this opportunity, we express our heartful thanks to clients who purchased out products.
Whole member of our Company, with a pride of long history and tradition, are paying hardest
efforts to turn out products which can go with consumers’ taste under continuous R & D and Q.C
based on long-accumulated know-how.
We are sure this product will enhance the function of your systems one level higher, your further
interests in our products and continuous encouragement would be very much appreciated.
SAFETY INSTRUCTIONS
The following safety instructions have been included in compliance with safety standard
regulations.
1. Read instructions
All the safety and operating instructions should be read before the appliance is operated.
2. Retain instructions
The safety and operating instructions should be retained for future reference.
3. Heed warnings
All warning on the appliance and in the operating instructions should be adhered to.
4. Follow instructions
All operating and use instructions should be followed.
5. Water and Moisture
The appliance should not be used near water-for example, near a bathtub, washbowl, kitchen sink,
laundry tub, in a wet basement, or near a swimming pool, etc.
6. Cart and Stands
The appliance should be used only with a cart or stand that is recommended by manufacturer.
7. Wall and Ceiling Mounting
The appliance should be mounted to a wall or ceiling only as recommended by the manufacturer.
8. Ventilation
The appliance should be situated so that its location or position does not interfere with its proper
ventilation. For example, the appliance should not be situated on a bed, sofa, rug or similar
surface that may block the ventilation opening or placed in a built-in installation, such as a
bookcase or cabinet that may impede the flow of air through the ventilation openings.
9. Heat
The appliance should be situated away from heat sources such as radiators, heat resisters, stoves,
or other appliances(including amplifiers) which product heat.
10. Power Source
The appliance should be connected to a power supply only of the type described in the operating
instructions or as marked on the appliance.
11. Grounding or polarization
Precautions should be taken so that the grounding or polarization means of a appliance is not
defeated.
12. Cleaning
The appliance should be cleaned only as recommended by the Manufacturer.
13. Object and Liquid Entry
Care should be taken so that objects do not fall and liquids are not spilled into the enclosure
through openings.
14. Power Lines
An outdoor antenna should be located away from power lines.
15. Damage Requiring Service
The appliance should be serviced by qualified service personnel when:
A. The power-supply cord or the plug has been damaged: or
B. Objects have fallen, or liquid has been spilled into the appliances: or
C. The appliance has been exposed to rain: or
D. The appliance does not appear to operate normally or exhibits a marked change in
performance: or
E. The appliance has been dropped: or the enclosure damaged.
16. Servicing
The user should not attempt to service the appliance beyond that described in the operating
instruction.
All other servicing should be referred to qualified service personnel.
OPERATTING PRECAUTIONS
Make sure the mains voltage is correct and is the same as that printed on the
rear of the amplifier. Unless otherwise specified when ordered, amplifiers shipped to customers in
North America operate on 120VAC 60Hz; those shipped to customer in Europe and Asia operate on
220-240VAC.
50Hz and those shipped to customers in Japan operate on 100VAC 50Hz. Damage caused by
connecting the amplifier to improper AC voltage is not covered by any warranty.
Always power down and disconnect the amplifier from mains voltage before making connections.
It is always a good idea to have the gain controls turned down during power-up to prevent speaker
damage if there is a high signal level at the inputs.
Whether you buy them or make them, use good-quality input and speaker
cables. Most intermittent problems are caused by faulty cables. Use good-quality
connectors and wire along with good soldering technique to ensure trouble-free
reliability. See the sections on Stereo Operation and Bridged-Mono Operation
for more information.
FEATURES ON PANEL CONTROLS
1~2. VOLUME CONTROL
The two input attenuator controls(located at the front panel) adjust gain for
their respective amplifier channels in all modes. The Main amplifiers have
input sensitivities of 1.15 Volts for rated power at 8 ohms, and have standard
voltage gains.
3. BRIDGE LED
Bridge LED lights when Bridge mode is active.
4. PROTECT LED
protect LED lights when protect function is active.
5. CLIP LED
All Main amplifiers features eight front panel LED indicators(four per channel:
Clip, Signal, Protect, and Power) to inform the user of each channel’s operating
status and warn of possible abnormal function. A channel’s red Clip LED will
light dimly at the onset of clipping and increase in brilliance as clipping
becomes more severe, staying on until the clipping cases. If the Clip LED’s are
flashing quickly and intermittently, the channel is just at the clip threshold,
while a steady, bright glow means the amp is “clip limiting” or reducing gain to
prevent severely clipped wave forms reaching the loudspeakers.
6. SIGNAL LED
This green LED lights when its channel produces an output signal of about 4
volts RMS or more( .1 volt or more at the input, with 0dB attenuation), indicating that there is
amplified signal present in the amplifier. It is useful in determining whether a signal is reaching
and being amplified by the power amplifier.
Note: If the signal reaching the power amplifier is bellow 50-100mV, the LED will not be active.
Also, if the amplifier goes into protective mode, this LED will not active.
7. POWER LED
The green Power LED indicates that the channels is operational. It lights under normal operation,
when a channel is not in protection mode. If the Power LED goes off, there is no signal at the
module output point.
8. AC POWER SWITCH
Power ON/OFF switch
9~10. SPEAKER JACK
Connect same poles of speaker(+,-)as terminal of connection of Left, Right speakers.
11. CH 1, 2 INPUT JACK
Balanced & Unbalanced signal input of CH 1 & 2. Can use XLR jack & 6.3 plus.
12. STEREO, MONO(BRIDGE) SWITCH
Slide switch to select stereo or bridged mono mode.
13. AC CORD
AC230V, 50/60Hz
*Check the power source of AC Voltage before connections
14. RESET BUTTON
When power is overload, this button will auto broken circuit and all LED at front panel will turn
off. Now, you should turn off the POWER SWITCH at front panel, then press [RESET] button at
rear panel to recovery setting. Then pressing POWER SWITCH again to power-up the amp.
15. GROUND TERMINAL
This is ground terminal to be connected with chassis of the turntable etc, to reduce hum to
minimum. To further minimize hum, it may necessary to connect this terminal with a wire to the
nearest water pipe which goes directly to real ground.
FRONT & REAR PANEL DISPLY
CONNECTING INPUTS
Example:
1. Driving a single 8 ohm speaker with the combined 4 ohm power of both channel
2. Driving a single 4 ohm speaker with the combined 2 ohm power of both channel
Precautions:
1. Bridge mono mode makers it possible to drive thousands of watts into a single speaker AC
current consumption will usually be higher avoid excessive single level and made sure the wiring
speaker can handle the power.
2. Do not use 2-ohm loads.
Installation:
Rack mounting of the amplifier is optional use four screws and washers when mounting the
amplifier to the front rack rails.
Connections inputs:
Each channel has active balanced XLR and 1/4” inch (6.3mm) inputs wired in parallel. The input
impedance is 20k ohms balanced 10k ohms unbalanced.
Balanced signals are less prone to AC hum, but unbalanced signals can be suitable for short cable
runs. The signal source’s output impedance should be less thank 600 ohms to avoid high frequency
loss in long cables.
Balanced inputs: Use the XLR or 1/4-inch(6.3mm) TRS input jacks, or the barrier strip.
Unbalanced inputs: Connect the unused side of the balanced input to ground, as shown above left.
A tip-sleeve 1/4-inch(6.3mm) connector will correctly terminate the unused side of the input
without modification.
For two-channel (stereo) operation, use the inputs for both Channel 1 and Channel 2; for parallel or
bridged mono operation, use the Channel 1 input. To patch the audio signal to other amps(parallel
and bridged modes only).
SPEAKER CONNECTIONS
Connect the left-side loudspeaker to the left-channel speaker terminals and the right side
loudspeaker to the right-channel speaker terminals of this unit, take care to observe connect (+) and
(-) polarity. If the polarity of one speaker is reversed, the speakers will be out of phase, causing a
loss in bass response and unstable, irregular stereo imaging.
Double-check to make sure that both speaker have the same polarity.
 It is recommended that you use high-quality, heavy gauge speaker cable with low resistance.
Designed specially for audio applications, using thin cable with high resistance may impair sound
quality and prevent the amplifier from delivering its full potential.
 The speaker cables for both channels should be approximately equal in length, as a marked
difference can result in improper left/right balance.
 Speaker Polarity note
Be sure to observe speaker polarity(+,- leads) throughout your system. Getting them wrong can
result in missing bass, massive distortion, or blown speakers!
Left positive (+) terminal to left speaker positive (+).
Left negative (-) terminal to left speaker negative (-).
Right positive (+) terminal to right speaker positive (+).
Right negative (-) terminal to right speaker negative (-).
Speaker TM Output:
The PMA amplifier offers a choice of output connections, with two Neutrik NL4MD speakon
jacks and two pairs of “touch-proof” binding posts.
The speakon connector is designed specially for high-power speaker connections. It locks in place,
prevents shock hazard, and assures the correct polarity.
The upper speakon jack has both Channel 1 and Channel B output, so it is especially useful for
parallel, bi-amp, or bridged mono operation. The other Speakon carries only Channel 2’s output.
See the illustrations as above.
For easier insertion, use the newer-style NL4FC speakon connectors with quick-lock thumb latches.
SPEAKER CABLING:
Larger wire sizes and shorter lengths minimize both loss of power and degradation of damping
factor. Do not place speaker cables next to input wiring.
WARNING: To prevent electric shock, do not operate the amplifier with any of
the conductor portion of the speaker wire exposed.
Binding post outputs:
1. Strip back insulation not more than 13mm(1/2 inch)
2. Insert wire fully so that none of the conductor is exposed: tighten barrel(use coin if necessary)
3. Non-European models only…
4. Spade lugs must have insulated barrels to prevent electric shock.
Warning: To prevent electric shock, do not operate the amplifier with any of the
conductor portion of the speaker wire exposed.
Connections for stereo and parallel operations
Connections for bridged mono operation
SPEAKER CABLING
Larger wire sizes and shorter length minimize both loss of power and degradation of damping factor.
Do not place speaker cables next to input wiring.
Series MG-TA1000 Technical Specifications
Type
Power Amplifier
Model
MG-TA1000
Supply
Mains Voltage AC 230V, 50Hz ± 10%
Output power Rated:
[email protected]Ω1%THD
[email protected]Ω
[email protected]Ω(Bridged)
[email protected]Ω(Bridged)
Total harmonic distortion
<=0.05% at 20Hz ~ 20KHz
Sensitivity
1V (full power)
Signal to noise ratio
>100dB
Frequency response
20 Hz ~ 20 KHz
Inputs Impedance
10KΩ (Unbalanced)1/4” Phone
20KΩ (Balanced) XLR
Indicators
Signal, Protection, Clip, Power
Speaker Output
Binding Type or Speaker Jack
AC power consumption
3000W
Dimensions
88mmX483mmX330mm(HWD)
Weight
16 KGS
Color
Black
Mounting options
Table top or 19” rack mountable
Agent:
AL MANAMEEN for Sound Systems
& Electronics
Saudi Arabia – Eastern Province
P O Box 534, 31911 Tel: 038511802
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