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JBL MPA1100, Owner'S Manual, Page: 1 / 23

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Power Amplifiers

MPA Series

MPA275

P r o f e s s i o n a l  A m p l i f i e r

Clip

-10dB

-20dB

Signal Present

Clip

-10dB

-20dB

Signal Present Power

Protect

1-CHANNEL-2

18

10

8

6

4

12

14

24

0

2

48

18

10

8

6

4

12

14

24

0

2

48

MPA400

P r o f e s s i o n a l  A m p l i f i e r

Clip

-10dB

-20dB

Signal Present

Clip

-10dB

-20dB

Signal Present Power

Protect

1-CHANNEL-2

18

10

8

6

4

12

14

24

0

2

48

18

10

8

6

4

12

14

24

0

2

48

MPA600

P r o f e s s i o n a l  A m p l i f i e r

Clip

-10dB

-20dB

Signal Present

Clip

-10dB

-20dB

Signal Present Power

Protect

1-CHANNEL-2

18

10

8

6

4

12

14

24

0

2

48

18

10

8

6

4

12

14

24

0

2

48

Clip

-10dB

-20dB

Signal Present

Clip

-10dB

-20dB

Signal Present Power

Protect

1-CHANNEL-2

18

10

8

6

4

12

14

24

0

2

48

18

10

8

6

4

12

14

24

0

2

48

MPA750

P r o f e s s i o n a l  A m p l i f i e r

Clip

-10dB

-20dB

Signal Present

Clip

-10dB

-20dB

Signal Present Power

Protect

1-CHANNEL-2

18

10

8

6

4

12

14

24

0

2

48

18

10

8

6

4

12

14

24

0

2

48

MPA1100

P r o f e s s i o n a l  A m p l i f i e r

Owner’s Manual

MPA275

MPA400

MPA600

MPA750

MPA1100

Summary of Contents for MPA1100

Page 1: ...P r o f e s s i o n a l A m p l i f i e r Clip 10dB 20dB Signal Present Clip 10dB 20dB Signal Present Power Protect 1 CHANNEL 2 18 10 8 6 4 12 14 24 0 2 48 18 10 8 6 4 12 14 24 0 2 48 Clip 10dB 20dB...

Page 2: ...HE RISK OF ELECTRIC SHOCK DO NOT REMOVE THE COVER NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL VORSICHT UM DAS RISIKO EINES ELEKTRISCHEN SCHLAGES ZU VERMINDERN ABDEC...

Page 3: ...peaker Outputs 5 Figure 5 Typical Unbalanced Connection 6 Figure 6 Portable Balanced System 6 Figure 7 Installed Balanced System 6 Figure 8 Ground Bus Connection 6 Figure 9 Jumper Positions for XLR Po...

Page 4: ...ort within the rack must be used in portable applica tions Open Input Architecture Slots Provided with each MPA Series amplifier is a standard input module This module and the upper input cover panel...

Page 5: ...6 7 13 23 22 23 22 25 29 24 27 28 26 30 31 31 25 29 24 27 28 26 30 31 31 Figure 2 Rear and Front Panel for 2 Space High Models MPA275 MPA400 MPA600 Figure 3 Rear and Front Panel for 3 Space High Mode...

Page 6: ...ce is 20 kilohm balanced 10 kilohm unbalanced as is typical of JBL amplifiers The input jacks are located on a removable panel which has a toggle switch for 1 bridged mono 2 normal stereo or 3 paralle...

Page 7: ...ld at the source with no connection to pin 1 at the amplifier If after wiring the input as shown above any hum or buzzing is present connect the GND terminals of all amplifiers together This bus shoul...

Page 8: ...the rear panel 5 Install the input ribbon cable and remount the Standard Input Module securely To Parallel the Inputs 1 Locate the selector switch adjacent to the CHANNEL 1 input XLR connector and se...

Page 9: ...MIN CH 2 CH 1 DUAL CHANNEL OUTPUT CONNECTOR STEREO 4 OHM MIN PER CH CONNECT ONE SPEAKER LOAD ONLY Use Either Binding Posts or Stereo Speakon but not both 2 2 1 1 BRIDGED MONO MODE CAUTION Output volt...

Page 10: ...hese levels in perspective music played at one third average power will be in a state of constant clipping and this power level is about the greatest one can obtain without completely obliterating the...

Page 11: ...1400 x 2 56 0 A 23 4 A 11 8 A 8 8 510 x 2 18 6 A 9 8A 4 8 A MPA750 4 4 760 x 2 30 0 A 14 8 A 6 8 A 0 8 A 2 2 1000 x 2 39 4 A 21 4 A 10 6 A 8 8 425 x 2 13 6 A 8 6 A 3 6 A MPA600 4 4 610 x 2 23 0 A 13 4...

Page 12: ...A 2 2 1400 x 2 28 0 A 11 7 A 5 9 A 8 8 510 x 2 9 3 A 4 9A 2 4 A MPA750 4 4 760 x 2 15 0 A 7 4 A 3 4 A 0 4 A 2 2 1000 x 2 19 7 A 10 7 A 5 3 A 8 8 425 x 2 7 8 A 4 3 A 1 8 A MPA600 4 4 610 x 2 11 5 A 6 7...

Page 13: ...proaches maximum tempera ture Illuminated steadily plus flashing during thermal muting Illuminated steadily during non thermal muting Typical Power Up Operation Power Down Behavior When the amplifier...

Page 14: ...bnormal PROTECT may flash too CLIP flashing at full LEVEL display indicates the amp has reached full power clipping and the limiter is acting to prevent severe overdrive A steady CLIP glow after the f...

Page 15: ...hose models rated at 2 ohms see Specifications the LEVEL 10 display should not be on more than about half the time with only occa sional clipping Protection Circuits The essence of high efficiency lig...

Page 16: ...f 15 dB If this does not arrest the temperature rise in case of an output short or blocked ventilation the amplifier will finally enter full muting which causes full shutdown of the output bias circui...

Page 17: ...oad grounding relay with internal fault fuses Complementary linear high efficiency outputs 3 step on MPA1100 2 step on MPA750 MPA600 MPA400 1 step on MPA275 100 120 220 240 Vac 50 60 Hz See Charts on...

Page 18: ...720 650 700 750 500 550 600 350 375 400 225 250 275 900 1000 1100 480 510 550 400 425 450 275 290 300 180 190 200 740 770 800 700 760 825 550 610 675 400 425 450 275 300 400 1000 1100 1200 900 950 100...

Page 19: ...1 THD 1 dB 50 Hz AC Power Mains 220 VAC 230 VAC 240 VAC 660 690 720 220 VAC 230 VAC 240 VAC 650 700 750 500 550 600 350 375 400 225 250 275 220 VAC 230 VAC 240 VAC 900 1000 1100 220 VAC 230 VAC 240 VA...

Page 20: ...TECT display is visible amplifier has muted due to extreme overheating Fan should be running at full speed and unless ventila tion is blocked operation should resume within one minute B The amplifier...

Page 21: ...speed 50 60 C Fan Speed rises gradually from slow to full 75 C PROTECT LED starts flashing 85 C PROTECT flash rate increases and CLIP starts to glow steadily The limiter will begin to reduce amplifie...

Page 22: ...ty without prior authorization You may obtain that authorization by contacting the factory or repair facility directly Please ship amplifiers in original packing materials or equiva lent to prevent fu...

Page 23: ...Part No TD 007500 OB PS137 2 A Harman International Company JBL Incorporated 8500 Balboa Boulevard Northridge California 91329USA...

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