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Manual JBL MPA1100

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  • JBL MPA1100 - page 1

    Power Amplifier s M P A 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 Prot ...

  • JBL MPA1100 - page 2

    1 Rack Mounting P r ecautions T o avoid damage to the amplifier mounting ears and/or rack rails, the amplifier must be supported at all four co r ners when used in portable racks. Consult JBL Service Dept for availability of Rear Support Brackets. Lifting P r ecautions In order to safely move or install the amplifie r , it is recommended that tw ...

  • JBL MPA1100 - page 3

    2 Cautions .................................................................................................................1 Unit Description ....................................................................................................3 General Information ..................................................................................... ...

  • JBL MPA1100 - page 4

    3 The MP A275, MP A400, MP A600, MP A750 and MP A1100 are high-efficiency profession- al power amplifiers, with two independent channels, respectively capable of deliver- ing 275, 400, 600, 750 and 1100 watts into a four ohm load (per channel), and substantially more power into lower impedance loads. Semi-toroidal power trans- formers (one per cha ...

  • JBL MPA1100 - page 5

    4 SENSITIVITY 1 VOLT IMPEDANCE 20K BAL 10K UNBAL GND P1 P3 PARALLEL STEREO BRIDGE P2 CHANNEL 1 INPUT GND +– – + GND P1 P3 P2 CHANNEL 2 CHANNEL 1 OUTPUT – BRIDGED MONO + CHANNEL 2 OUTPUT + BRIDGED MONO 8 OHM MIN – CH 2 CH 1 DUAL CHANNEL OUTPUT CONNECTOR STEREO 4 OHM MIN PER CH SENSITIVITY 1 VOLT IMPEDANCE 20K BAL 10K UNBAL GND P1 P3 PARALLEL ...

  • JBL MPA1100 - page 6

    5 Installation Figure 4. Neutrik Speakon Connector Wiring for Speaker Outputs Exploded view (side) Connection T erminals Inputs Balanced input connections are available via barrier strip or XLR connectors. The unit is shipped with pin 2 high (see subsequent instructions to change polarity). As usual, for unbalanced inputs, the unused terminal shoul ...

  • JBL MPA1100 - page 7

    Xx 6 Input Connections Figure 5. T ypical Unbalanced Connection T o connect an unbalanced source to the input of an MP A amplifier , “+” should be connected to pin 2, and “-” to pin 3 The “-” terminal should also be connected to the shield at the source only. Pin 1 should not be connected at the amplifier . Figure 6. Portable Balanced ...

  • JBL MPA1100 - page 8

    7 Changing the XLR polarity The M P A275, M P A400, M P A600, M P A750 and M P A1100 are shipped with XLR polarity set at pin 2 high. T o convert to pin 3 high: 1. Remove the Standard Input Module and input ribbon cable. (See Figure 1). 2. Find the soldered jumpers W303, W304 (Ch 1) and W403, W404 (Ch 2), located behind each XLR jack. These are sol ...

  • JBL MPA1100 - page 9

    8 Installation W ith paralleled inputs, the signal may be looped through (or “daisy-chained”) by going in one channel’s inputs and out the othe r . The amplifier Gain settings will not affect the level at the input jacks. Bridged-Mono Mode 1. Locate the selector switch adjacent to the CHANNEL 1 input XLR connecto r , and set it to the BRIDGE ...

  • JBL MPA1100 - page 10

    9 AC Power Connection AC Connection is made through a standard Schuko or NEMA grounded plug. While all models meet Safety Agency requirements for current consumption of less than 12 amp, 12 0 V ac during “no r mal” operation, peak current consumption can be higher on the M P A1100 or M P A750. The amplifiers can be wired for 100, 120, or 220? ...

  • JBL MPA1100 - page 11

    10 Operation T able 1. JBL M P A-Series AC Power Consumption vs Load Impedance With 110, 115 and 120V Mains 2 CH Load Max Power AC Cur r ent AC Cur r ent AC Cur r ent AC Cur r ent Model (Ohms) (Midband) Full Power 1/3 Power 1/8 Power Idle 8+8 740 x 2 23.0 A 10.2A 5.4 A M P A1100 4+4 1000 x 2 38.0 A 16.0 A 7.8 A 0.9 A 2+2 1300 x 2 54.0 A 23.0 A 11.4 ...

  • JBL MPA1100 - page 12

    11 Operation T able 2. JBL MP A-Series AC Power Consumption vs Load Impedance With 220, 230 and 240V Mains 2 CH Load Max Power AC Curr ent AC Current AC Current AC Current Model (Ohms) (Midband) Full Power 1/3 Power 1/8 Power Idle 8+8 740 x 2 11.5 A 5.1A 2.7 A MP A1100 4+4 1000 x 2 19.0 A 8.0 A 3.9 A 0.5 A 2+2 1300 x 2 27.0 A 11.5 A 5.7 A 8+8 480 x ...

  • JBL MPA1100 - page 13

    12 Cont r ols The front-mounted Gain controls have 11 detents for easy matching of levels. The Gain scale show s dB of attenuation from full gain, with positions for 0 (full), -2, -4, -6, -8, -10, -12, -14, 18, -24, and ∞ (full off). Attenuation is accurate within 1 dB (down to -1 4 dB). Gain Cont r ol Lockout Provided with each amplifier are tw ...

  • JBL MPA1100 - page 14

    13 Clip -10dB -20dB Signal Present Protect Power Clip -10dB -20dB Signal Present Protect Power Clip -10dB -20dB Signal Present Protect Power Clip -10dB -20dB Signal Present Protect Power Clip -10dB -20dB Signal Present Protect Power ON/OFF MUTING SHORTED LOAD CLIPPING OVERHEATING THERMAL MUTING Not Illuminated Full Brightness Variable or Occasional ...

  • JBL MPA1100 - page 15

    14 Maximum Long- T e r m Output Power In most cases, the desired sound level can be obtained without using the full power output of the amplifie r . The level displays are then used to confi r m that both chan- nels are working as desired. If the amplifier is operated at extreme power levels, it may overheat or the speakers may be damaged. The f ...

  • JBL MPA1100 - page 16

    15 Operation extended somewhat, and the tu r n-off muting has been quickened, to ensure muting even of poorly designed preceding components. On/off muting is equally effective whether the amplifier is tu r ned off with its own switch or with a remote switch. Inrush current is limited by an NTC resistor (Negative T emperature Coefficient) which sta ...

  • JBL MPA1100 - page 17

    16 SMPTE-IM, less than 0.05 % 2 0 Hz to 2 0 kHz, ±0. 1 dB 8 Hz to 10 0 kHz, +0/- 3 dB Greater than 200 3 dB at 4 ohms (2 dB for M P A275) 10 0 dB below rated output (2 0 Hz to 2 0 kHz) 1 V r ms for rated power (8 ohms) M P A1100: 80 (38 dB) M P A750: 63 (36 dB) M P A600: 56 (35 dB) M P A400: 45 (33 dB) M P A275: 35.5 (31 dB) 10 kilohms unbalanced, ...

  • JBL MPA1100 - page 18

    17 Specifications Load & Measure- ment Conditions Output RMS Power in Watts 8 ohms/channel 20 Hz – 20 kHz 0.1% THD MPA1100 MPA750 MPA600 MPA400 MPA275 450 475 500 350 375 400 250 260 275 160 170 175 8 ohms/channel 20 Hz – 15 kHz * 0.1% THD 4 ohms/channel 20 Hz – 20 kHz 0.1% THD 4 ohms/channel 20 Hz – 15 kHz * 0.1% THD 8 ohms/channel 1 ...

  • JBL MPA1100 - page 19

    18 Specifications *Amplifier’s output protective circuitry prevents full power output above 1 5 kHz. Specifications subject to change without notice. Load & Measure- ment Conditions Output RMS Power in Watts 8 ohms/channel 20 Hz – 20 kHz 0.1% THD MPA1100 MPA750 MPA600 MPA400 MPA275 450 475 500 350 375 400 250 260 275 160 170 175 8 ohms/c ...

  • JBL MPA1100 - page 20

    19 Channel will not come out of muting: A. If reducing Gain to zero does not release muting, the channel is defective or overheated (see below). B. If reducing Gain releases the muting, advance Gain slowly while watching the LEVEL displays (in case there is an abnormal signal which could blow the speakers). No sound is heard: A. Is the channel in m ...

  • JBL MPA1100 - page 21

    20 T roubleshooting Overheating: A. If ventilation is blocked, or if the amplifier is overdriven into low impedance loads, it can overheat. The thermal protection system’s normal response to rising temperatures is as follows: 25–50° C: Fan runs on low speed. 50–60° C: Fan Speed rises gradually from slow to full. 75° C: PROTECT LED starts ...

  • JBL MPA1100 - page 22

    21 General info r mation or T echnical Assistance For more info r mation on JB L products, including these power amplifiers, contact your nearest JBL professional products dealer or the JBL factory at the address below. Repairs Please do not ship your amplifier(s) to JBL or a JBL authorized repair facility without prior authorization. Y ou may ob ...

  • JBL MPA1100 - page 23

    Pa r t No. TD-007500-OB/PS137-2 A Ha r man Int e r national Co mpany JBL Incorporated 8500 Balboa Boulevard Northridge, Califo r nia 91329USA ...

Manufacturer JBL Category Stereo Amplifier

Documents that we receive from a manufacturer of a JBL MPA1100 can be divided into several groups. They are, among others:
- JBL technical drawings
- MPA1100 manuals
- JBL product data sheets
- information booklets
- or energy labels JBL MPA1100
All of them are important, but the most important information from the point of view of use of the device are in the user manual JBL MPA1100.

A group of documents referred to as user manuals is also divided into more specific types, such as: Installation manuals JBL MPA1100, service manual, brief instructions and user manuals JBL MPA1100. Depending on your needs, you should look for the document you need. In our website you can view the most popular manual of the product JBL MPA1100.

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A complete manual for the device JBL MPA1100, how should it look like?
A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use JBL MPA1100 by users. Manuals are usually written by a technical writer, but in a language understandable to all users of JBL MPA1100.

A complete JBL manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

1. Preface and tips on how to use the manual JBL MPA1100 - At the beginning of each manual we should find clues about how to use the guidelines. It should include information about the location of the Contents of the JBL MPA1100, FAQ or common problems, i.e. places that are most often searched by users in each manual
2. Contents - index of all tips concerning the JBL MPA1100, that we can find in the current document
3. Tips how to use the basic functions of the device JBL MPA1100 - which should help us in our first steps of using JBL MPA1100
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with JBL MPA1100
5. FAQ - Frequently Asked Questions
6. Contact detailsInformation about where to look for contact to the manufacturer/service of JBL MPA1100 in a specific country, if it was not possible to solve the problem on our own.

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