M-1500/2000
POWER
4
0
d
B
P
R
O
T
C
L
IP
4
0
d
B
2
0
d
B
2
0
d
B
C
L
IP
P
R
O
T
POWER AMPLIFIER
M
2000
17
22
13
10
0
1
229
54
19
15
11
12
9
8
7
5
4
3
6
17
22
13
10
0
1
229
54
19
15
11
12
9
8
7
5
4
3
6
Power Amplifier
Contents
Contents
1. Unpacking and Installation.....................................................................................................1
2. Features ................................................................................................................................2
3. Front Panel Controls...............................................................................................................3
4. Rear Panel Controls ...............................................................................................................4
5. Protection Circuitry.................................................................................................................6
6. Bridged and Parallel Modes ...................................................................................................7
7. Connections...........................................................................................................................8
8. Link Connectors .....................................................................................................................9
9. Speaker Impedance ...............................................................................................................9
10. Caution for Speaker Connection .........................................................................................10
11. Portable Rack Mounting.....................................................................................................11
12. Positioning the Housed Amplifier........................................................................................12
13. Troubleshooting.................................................................................................................12
14. Block Diagram...................................................................................................................13
15. Specifications.....................................................................................................................14
OFFICE :
226-9 DUGJUNG - LI, HOE CHUN - EUB,
YANGJU - KUN, KYUNGKI - DO, KOREA
TEL : 82-351-860-7041~5, FAX : 82-351-858-1907
Home Page : http://www.inter-m.co.kr
E-mail : export@inter-m.co.kr
POWER AMPLIFIER
Unpacking and Installation
Unpacking and Installation
Although it is neither complicated to install nor difficult to operate your power Amplifier, a few minutes of
your time is required to read this manual for a properly wired installation and becoming familiar with its
many features and how to use them. Please take a great care in unpacking your set and do not discard the
carton and other packing necessary to return your set for when moving your set and are required if it ever
becomes necessary to return your set for service. Never place the unit near radiators, in front of heating
vents, to direct sun light, in excessive humid or dusty location to avoid early damage and for your years of
quality use. Connect your complementary components as illustrated in the following page.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK.
DO NOT REMOVE COVER (OR BACK).
NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
WARNING
To prevent fire or shock hazard, do not
expose the unit to rain or moisture.
This symbol is intended to alert the user to the
presence of uninsulated “dangerous voltage”
within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric
shock to persons.
This symbol is intended to alert the user to the
presence of important operation and maintenance (servicing) instructions in the literature
accompanying the appliance.
Caution: To prevent electric shock do not use this (polarized) plug
with an extension cord, receptacle or other outlet unless
the blades can be fully inserted to prevent blade exposure.
Attentions: Pour prévenir les chocs électriques ne pas utiliser cette
fiche polarisée avec un prolongateur, une prise de
courant on une autre sortie de courant, sauf si les
lames peuvent étre insérées à fond sans en laisser
aucune partie à découvert.
M-1500/2000
1
POWER AMPLIFIER
Features
Features
- SUBSTANTIAL PROTECTION CIRCUITARY
To insure stability and reliability against over current and overheating extra protection circuitary is provided. In addition, turn on delay and DC detection circuitary is provided to protect the loud-speaker.
- BRIDGED MONO FUNCTION
These stereo amplifiers can be used for monoral powerful sound by selecting the mode switch.
- VARIOUS DISPLAY
To confirm the operating status, LED displays of protection, clip, and signals are provided on front panel.
- COMPACT SIZE
For valuable saving in rack space and slim exterior view, these amplifier is designed within compact size.
- SOFT-START SYSTEM
To prevent inrush current when turn on the amplifier, soft-start circuit is provided on primary power lines.
- SPEED CONTROLLED FAN
Dual temperature-sensitive speed-controlled fans for reliable cooling without thermal and overheating problems.
- COMBINATION INPUT CONNECTOR
Combination input connectors for each channel accommodate both balanced XLR or balanced 1/4” TRS
plugs, as well as both Speakon
- TRANSFORMER
Toroidal transformer power supply for high current and low profile.
TM
and banana jack output connectors for maximum flexibility.
2
M-1500/2000
Front Panel Controls
POWER
4
0
d
B
P
R
O
T
C
L
I
P
4
0
d
B
2
0
d
B
2
0
d
B
C
L
IP
P
R
O
T
POWER AMPLIFIER
M
2000
17
22
13
10
0
1
229
54
19
15
11
12
9
8
7
5
4
3
6
17
22
13
10
0
1
229
54
19
15
11
12
9
8
7
5
4
3
6
6 6
5
1 2 43123
Front Panel ControlsFront Panel Controls
POWER AMPLIFIER
1. PROTECTION INDICATOR
This red LED indicator lights up for approximately six seconds when the amplifier is powered ON, indicating that the soft-start protection system is working. No sound is output during soft-start up. If one of
the protection systems is activated during normal use, this indicator lights up and no sound is output. The
speaker system is actually disconnected from the amplifier outputs when this indicator lights up. The protection systems are activated when overheating occurs or a DC voltage is present at the amplifier outputs. If the problem is corrected, the protection systems deactivate automatically, this indicator goes out,
and normal amplifier operation is resumed.
2. CLIP INDICATORS
CLIP indicator on each channel illuminates when distortion reaches or exceeds approximately 0.1%,
indicating that the amplifier is being driven by excessively high inputs.
3. OUTPUT LEVEL INDICATORS
Output level indicating LEDs indicate the output level of this amplifiers. These LEDs illuminate when the
outputs are –40dB and –20dB of rated power.
4. INPUT ATTENUATORS
Separate level controls are provided for channel one and channel two input, clockwise rotation of the
controls increase level. These are 21-step detented input signal attenuators.
5. POWER SWITCH AND INDICATOR
The power switch is used to turn on and off the AC main power.
The power indicator lights up when the amplifier is powered ON.
6. HANDLES
You can handle this amplifier easily by using these handles.
M-1500/2000
3
POWER AMPLIFIER
PUSH TO RESET
20A / 250V
(4Ω ~ 8Ω)(4Ω ~ 8Ω)
BRIDGED
(8Ω~16Ω)
(4Ω ~ 8Ω)(4Ω ~ 8Ω)
CH 1CH 2
OUTPUT
BALANCED
0dBm
BALANCED
0dBm
CH 1CH 2
~AC INPUT
230V 50Hz, 1300W
STEREO
BRIDGED
PARALLEL
INPUT
XLR
BALANCED
•3=COLD
•2=HOT
•1=GND
•TIP=HOT
•RING=COLD
•SLEEVE=GND
TRS
BALANCED
PUSH PUSH
6
5
1 2431
Rear Panel Controls
Rear Panel Controls
1. FANS
The fans should be kept free of all obstructions and be accessible to cool fresh air when possible. It is
important that the fans be used in a dust free environment.
2. CIRCUIT BREAKER
When the circuit breaker is cut, push to reset again. In case of occuring trouble to the set by means of
overload or error, circuit breaker will protect the set from trouble by breaking AC power source.
3. OUTPUT TERMINALS
Output terminals are dual five-way binding posts and speaker connectors. Do not parallel the two outputs of each channel by connecting them (together, or parallel them) with any other amplifier output.
* When speakers are connected through speaker, please make sure correct connection of each pin, and
refer speaker pin number.
- STEREO MODE - BRIDGED MODE
OUTPUT
BRIDGED
AMP OUTPUT CH1, CH2
1- 1+
(8Ω~16Ω)
(4Ω ~ 8Ω)(4Ω ~ 8Ω)
NOT CONNECTED
1- 1+
OUTPUT
BRIDGED
(8Ω~16Ω)
(4Ω ~ 8Ω)(4Ω ~ 8Ω)
The minimum impedance for the connected speaker system is specified in “Speaker Impedance” on page 6.
4
M-1500/2000
2+ 2-
NOT CONNECTED
(4Ω ~ 8Ω)(4Ω ~ 8Ω)
CH 1CH 2
2+ 2-
MONO(BTL)
CH1 OR CH2
(4Ω ~ 8Ω)(4Ω ~ 8Ω)
CH 1CH 2
Loading...