Nissindo MA-1200 User manual
BRIDGE
PROTECT
CLIP
SIGNAL
POWER
Professional Power Amplier: MA-1200
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-10-14 -12
CH 1
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-10-14 -12
CH 2
Professional Power Amplifier
MA-1200
MA-1400
MA-1600
Operating Instructions
BRIDGE
PROTECT
CLIP
SIGNAL
POWER
Professional Power Amplier: MA-1200
I
I
I
I
I
I
I
I
I
I
I
I
I
-0-
8
-2-21
-4-20
-6-18
-8-16
-10-14 -12
CH 1
I
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I
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I
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I
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I
I
-0-
8
-2-21
-4-20
-6-18
-8-16
-10-14 -12
CH 2
2 3
CONTENTS
Safety instructions...................................................................................... 3~4
Introduction................................................................................................... 5
Specifications............................................................................................ 6~7
Name and functions of the amplifier................................................................ 8
Special feature descriptions.......................................................................9~10
Connector information................................................................................. 11
How to connect main speakers...................................................................... 12
How to connect stage monitor speakers..........................................................12
How to connect main speakers & stage monitor speakers with one amplifier.....12
Troubleshooting......................................................................................13~14
Applications and diagrams illustration........................................................... 14
Physical.......................................................................................................15
SAFETY INSTRUCTIONS
1. Read Instructions: All the safety and operation
instructions should be read before this Nissindo
product is operated.
2. Retain Instructions: The safety and operating
instructions should be kept for future reference.
3. Warnings: All warnings on this Nissindo product in
these operating instructions should be followed.
4. Follow Instructions: All operating and other
instructions should be followed carefully.
5. Water and Moisture: This Nissindo product should
not be used near water, for example, near a bathtub,
washbowl, kitchen sink, laundry tub, in a wet
basement, near a swimming pool, swamp or salivating
St. Bernard dog, etc.
6. Cleaning: Clean only with a dry cloth.
7. Ventilation: This Nissindo product should be
situated so that its location or position does not
interfere with its proper ventilation. For example, the
Component should not be situated on a bed, sofa,
rug, or similar surface that may block any ventilation
openings, or placed in a built-in installation such as a
bookcase or cabinet that may impede the flow of air
through ventilation openings.
8. Heat: This Nissindo product should be stay away
from heat sources such as radiators, or other devices
producing heat.
9. Power Sources: This Nissindo product should be
connected to a power supply only of the type
described in these operation instructions or as marked
on this Nissindo product.
10. Power Cord Protection: Power supply cords
should be routed so that they are not likely to be
walked upon or pinched by items placed upon or
against them. Please pay particular attention to cords
at plugs, convenience receptacles, and the point
where they exit this Nissindo product.
11. Object and Liquid Entry: Care should be taken so
that objects do not fall on, or liquids are not spilled
into this Nissindo product.
12. Damage Requiring Service: This Nissindo product
should be serviced only by qualified service personnel
when:
A. The power-supply cord or the plug has been
damaged; or
B. Objects have fallen, or liquid has spilled into
this Nissindo product; or
C. This Nissindo product has been exposed to
rain; or
D. This Nissindo product does not appear to
operate normally or exhibits a marked change in
performance; or
E. This Nissindo product has been dropped, or its
chassis damaged.
13. Servicing: The user should not attempt to service
this Nissindo product beyond those means described
in this operating manual. All other servicing should be
referred to the Nissindo Service Department.
14. 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.
15. Grounding or Polarization: Precautions should be
taken so that the grounding or polarization means of
this Nissindo product is not defeated.
16. Power Precaution: Unplug this Nissindo product
during lightning storms or when unused for long
periods of time. Note that this Nissindo product is not
completely disconnected from the AC mains service
when the power switch is in the OFF position.
17. This apparatus does not exceed the Class
A/Class B (whichever is applicable) limits for radio
noise emissions from digital apparatus as set out in the
radio interference regulations of the Canadian
Department of Communications.
18. Exposure to extremely high noise levels may cause
permanent hearing loss. Individuals vary considerably
in susceptibility to noise-induced hearing loss, but
nearly everyone will loss some hearing if exposed to
sufficiently intense noise for a period of time. The U.S.
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 PERSONNEL
Please write your serial number here for future reference (i.e., insurance claims, techsupport,
return authorization, etc.):
Purchased at:
Date of purchase:
2 3
CONTENTS
Safety instructions...................................................................................... 3~4
Introduction................................................................................................... 5
Specifications............................................................................................ 6~7
Name and functions of the amplifier................................................................ 8
Special feature descriptions.......................................................................9~10
Connector information................................................................................. 11
How to connect main speakers...................................................................... 12
How to connect stage monitor speakers..........................................................12
How to connect main speakers & stage monitor speakers with one amplifier.....12
Troubleshooting......................................................................................13~14
Applications and diagrams illustration........................................................... 14
Physical.......................................................................................................15
SAFETY INSTRUCTIONS
1. Read Instructions: All the safety and operation
instructions should be read before this Nissindo
product is operated.
2. Retain Instructions: The safety and operating
instructions should be kept for future reference.
3. Warnings: All warnings on this Nissindo product in
these operating instructions should be followed.
4. Follow Instructions: All operating and other
instructions should be followed carefully.
5. Water and Moisture: This Nissindo product should
not be used near water, for example, near a bathtub,
washbowl, kitchen sink, laundry tub, in a wet
basement, near a swimming pool, swamp or salivating
St. Bernard dog, etc.
6. Cleaning: Clean only with a dry cloth.
7. Ventilation: This Nissindo product should be
situated so that its location or position does not
interfere with its proper ventilation. For example, the
Component should not be situated on a bed, sofa,
rug, or similar surface that may block any ventilation
openings, or placed in a built-in installation such as a
bookcase or cabinet that may impede the flow of air
through ventilation openings.
8. Heat: This Nissindo product should be stay away
from heat sources such as radiators, or other devices
producing heat.
9. Power Sources: This Nissindo product should be
connected to a power supply only of the type
described in these operation instructions or as marked
on this Nissindo product.
10. Power Cord Protection: Power supply cords
should be routed so that they are not likely to be
walked upon or pinched by items placed upon or
against them. Please pay particular attention to cords
at plugs, convenience receptacles, and the point
where they exit this Nissindo product.
11. Object and Liquid Entry: Care should be taken so
that objects do not fall on, or liquids are not spilled
into this Nissindo product.
12. Damage Requiring Service: This Nissindo product
should be serviced only by qualified service personnel
when:
A. The power-supply cord or the plug has been
damaged; or
B. Objects have fallen, or liquid has spilled into
this Nissindo product; or
C. This Nissindo product has been exposed to
rain; or
D. This Nissindo product does not appear to
operate normally or exhibits a marked change in
performance; or
E. This Nissindo product has been dropped, or its
chassis damaged.
13. Servicing: The user should not attempt to service
this Nissindo product beyond those means described
in this operating manual. All other servicing should be
referred to the Nissindo Service Department.
14. 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.
15. Grounding or Polarization: Precautions should be
taken so that the grounding or polarization means of
this Nissindo product is not defeated.
16. Power Precaution: Unplug this Nissindo product
during lightning storms or when unused for long
periods of time. Note that this Nissindo product is not
completely disconnected from the AC mains service
when the power switch is in the OFF position.
17. This apparatus does not exceed the Class
A/Class B (whichever is applicable) limits for radio
noise emissions from digital apparatus as set out in the
radio interference regulations of the Canadian
Department of Communications.
18. Exposure to extremely high noise levels may cause
permanent hearing loss. Individuals vary considerably
in susceptibility to noise-induced hearing loss, but
nearly everyone will loss some hearing if exposed to
sufficiently intense noise for a period of time. The U.S.
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 PERSONNEL
Please write your serial number here for future reference (i.e., insurance claims, techsupport,
return authorization, etc.):
Purchased at:
Date of purchase:
6 7
MA-1200 MA-1400 MA-1600
SPECIFICATIONS
MODEL
NDICATORS
CONNECTORS
COOLING
AMPLIFIER PROTECTION
LOAD PROTECTION
OUTPUT CIRCUIT TYPE
DIMENSIONS (WxDxH)
WEIGHT
SHIPPING WEIGHT
POWER REQUIREMENTS
POWER CONSUMPTION @ 120 VAC
(both channels driven)
Multiply currents by 0.5 for 230V units
POWER CONSUMPTION NOTES
POWER: Green LED
PARALLEL: Yellow LED
BRIDGED: Yellow LED
CLIP: RED LED, 1 per channel
-10 dB: Green LED, 1 per channel
-20dB: Green LED, 1 per channel
SIGNAL: Green LED, 1 per channel
Input: XLR and 1/4" (6.3 mm) TRS, tip and pin 2 positive
Output: "Touch-Proof" binding posts and Meutrik SpeakonTM
Continuously variable sped fan, back-to-front air flow
Full short circuit, open circuit, thermal, ultrasonic, and RF protection
Stable into reactive or mismatched loads
Turn-on/turn-off muting, DC-fault power supply shutdown, clip
limiting
H: Class AB complementary linear output with Class H 2-step high
efficiency circuit
20-1/2x21x6-7/10 (inch)
45 lbs 53 lbs 54.6 lbs
48 lbs 56 lbs 57.6 lbs
Available for 120 or 220~240 VAC, 50/60 Hz
11/8 power with pink noise represents typical program with
occasional clipping.
21/3 power with pink noise represents severe program with
heavy clipping.
3Continuous sine wave at 1% clipping.
* Thermal or overcurrent cutback limits duration.
Typical1Full2Max3
0.9 A
5.0 A 8.4 A 15.8 A
7.9 A 13.5 A 26 A
11.8 A 22 A* 42 A*
ldle
8
4
2
Typical1Full2Max3
0.9 A
6.0 A 11 A 20 A
9.5 A 17 A 33 A
14 A 27 A* 50 A*
ldle
8
4
2
Typical1Full2Max3
0.9 A
7.6 A 13.1 A 25 A
11.6 A 20 A 39 A
16.6 A
ldle
8
4
2
MA-1200
425
700
475
825
1200
850
1500
2400
2 dB @ 4
< 0.02%
>500 @ 8
108 dB
40x (32 dB)
1.5v (+5.5 dBu)
1.3v (+4.6 dBu)
6 K unbalanced
12 K balanced
MA-1400
550
900
625
1050
1500
1100
2000
3000
2 dB @ 4
< 0.02%
>500 @ 8
107 dB
40x (32 dB)
1.7v (+6.8 dBu)
1.5v (+5.7 dBu)
6 K unbalanced
12 K balanced
MA-1600
700
1100
800
1250
1700
1400
2200
3400
2 dB @ 4
< 0.02%
>500 @ 8
107 dB
40x (32 dB)
1.9v (+7.7 dBu)
1.7v (+6.6 dBu)
6 K unbalanced
12 K balanced
SPECIFICATIONS
MODEL
OUTPUT POWER in watts
20 Hz~20 kHz @ 0.03% THD
8 per channel
20 Hz~20 kHz @ 0.05% THD
4 per channel
EIA: 1kHz @ 1% THD
8 per channel
4 per channel
2 per channel
Bridge Mono:
16 , 20 Hz~20 kHz, 0.1% THD
8 , 20 Hz~20 kHz, 0.1% THD
4 , 1kHz, 0.1% THD
DYNAMIC HEADROOM
DISTORTION
SMPTE-IM
FREQUENCY RESPONSE
(at 10 dB below rated output power)
DAMPING FACTOR
NOISE (unweighted 20 Hz~20 kHz, below
rated output)
VOLTAGE GAIN
INPUT SENSITIVITY, V RMS
full rated power @ 8
full rated power @ 4
INPUT IMPEDANCE
CONTROLS
20 Hz~20 kHz, +0.15 dB
-3 dB points: 5 Hz and 100 kHz
Front: AC switch, channel 1 and 2 gain knobs with 11 detents
Rear: 10-position DIP switch
MA-1200
MA-1400
MA-1600
Power, 8 /ch
20 Hz-20 kHz, 0.03% THD
425 W
550 W
700 W
Power, 4 /ch
20 Hz-20 kHz, 0.05% THD
700 W
900 W
1100 W
Power, 2 /ch
1 kHz, 1% THD
1200 W
1500 W
1700 W
Model
6 7
MA-1200 MA-1400 MA-1600
SPECIFICATIONS
MODEL
NDICATORS
CONNECTORS
COOLING
AMPLIFIER PROTECTION
LOAD PROTECTION
OUTPUT CIRCUIT TYPE
DIMENSIONS (WxDxH)
WEIGHT
SHIPPING WEIGHT
POWER REQUIREMENTS
POWER CONSUMPTION @ 120 VAC
(both channels driven)
Multiply currents by 0.5 for 230V units
POWER CONSUMPTION NOTES
POWER: Green LED
PARALLEL: Yellow LED
BRIDGED: Yellow LED
CLIP: RED LED, 1 per channel
-10 dB: Green LED, 1 per channel
-20dB: Green LED, 1 per channel
SIGNAL: Green LED, 1 per channel
Input: XLR and 1/4" (6.3 mm) TRS, tip and pin 2 positive
Output: "Touch-Proof" binding posts and Meutrik SpeakonTM
Continuously variable sped fan, back-to-front air flow
Full short circuit, open circuit, thermal, ultrasonic, and RF protection
Stable into reactive or mismatched loads
Turn-on/turn-off muting, DC-fault power supply shutdown, clip
limiting
H: Class AB complementary linear output with Class H 2-step high
efficiency circuit
20-1/2x21x6-7/10 (inch)
45 lbs 53 lbs 54.6 lbs
48 lbs 56 lbs 57.6 lbs
Available for 120 or 220~240 VAC, 50/60 Hz
11/8 power with pink noise represents typical program with
occasional clipping.
21/3 power with pink noise represents severe program with
heavy clipping.
3Continuous sine wave at 1% clipping.
* Thermal or overcurrent cutback limits duration.
Typical1Full2Max3
0.9 A
5.0 A 8.4 A 15.8 A
7.9 A 13.5 A 26 A
11.8 A 22 A* 42 A*
ldle
8
4
2
Typical1Full2Max3
0.9 A
6.0 A 11 A 20 A
9.5 A 17 A 33 A
14 A 27 A* 50 A*
ldle
8
4
2
Typical1Full2Max3
0.9 A
7.6 A 13.1 A 25 A
11.6 A 20 A 39 A
16.6 A
ldle
8
4
2
MA-1200
425
700
475
825
1200
850
1500
2400
2 dB @ 4
< 0.02%
>500 @ 8
108 dB
40x (32 dB)
1.5v (+5.5 dBu)
1.3v (+4.6 dBu)
6 K unbalanced
12 K balanced
MA-1400
550
900
625
1050
1500
1100
2000
3000
2 dB @ 4
< 0.02%
>500 @ 8
107 dB
40x (32 dB)
1.7v (+6.8 dBu)
1.5v (+5.7 dBu)
6 K unbalanced
12 K balanced
MA-1600
700
1100
800
1250
1700
1400
2200
3400
2 dB @ 4
< 0.02%
>500 @ 8
107 dB
40x (32 dB)
1.9v (+7.7 dBu)
1.7v (+6.6 dBu)
6 K unbalanced
12 K balanced
SPECIFICATIONS
MODEL
OUTPUT POWER in watts
20 Hz~20 kHz @ 0.03% THD
8 per channel
20 Hz~20 kHz @ 0.05% THD
4 per channel
EIA: 1kHz @ 1% THD
8 per channel
4 per channel
2 per channel
Bridge Mono:
16 , 20 Hz~20 kHz, 0.1% THD
8 , 20 Hz~20 kHz, 0.1% THD
4 , 1kHz, 0.1% THD
DYNAMIC HEADROOM
DISTORTION
SMPTE-IM
FREQUENCY RESPONSE
(at 10 dB below rated output power)
DAMPING FACTOR
NOISE (unweighted 20 Hz~20 kHz, below
rated output)
VOLTAGE GAIN
INPUT SENSITIVITY, V RMS
full rated power @ 8
full rated power @ 4
INPUT IMPEDANCE
CONTROLS
20 Hz~20 kHz, +0.15 dB
-3 dB points: 5 Hz and 100 kHz
Front: AC switch, channel 1 and 2 gain knobs with 11 detents
Rear: 10-position DIP switch
MA-1200
MA-1400
MA-1600
Power, 8 /ch
20 Hz-20 kHz, 0.03% THD
425 W
550 W
700 W
Power, 4 /ch
20 Hz-20 kHz, 0.05% THD
700 W
900 W
1100 W
Power, 2 /ch
1 kHz, 1% THD
1200 W
1500 W
1700 W
Model
Printed on 100% Recycled Paper
Comments to
PO BOX 880023
San Francisco, CA 94188-0023
E-Mail: [email protected]
Nissindo Trademark All Rights Reserved.
Design and Engineered in U.S.A. Code No. D040215
Thank you for purchasing this unit. To
make full and effective use of this unit,
please read this Owner's Manual
carefully before operating it.
After reading, retain this booklet
together with the Warranty Card for
future use in case of defections or
other troubles.
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