QUICK START

INSTALLATION

You can mount the M•800 amp in any standard rack system (see page 18), or place it horizontally on a floor or table.

Note: 4 ohms is the mini-

mum impedance you

should connect to the amplifier in BRIDGE mode

and 2 ohms is the minimum per side for STEREO.

If you connect lower impedance speakers, the amplifier may overheat and shutdown.

DO NOT BLOCK THE VENTILATION PORTS. The M•800 draws its ventilation air in from the front and out through the side panels. It needs plenty of fresh air to stay cool.

CONNECTIONS AND SETTINGS

1.Be sure the POWER switch is off before making connections.

2.Turn the GAIN controls fully down (counterclockwise) for now.

3.Set both LOW CUT FILTER controls to their TYPICAL marks (35Hz).

4.Set both CONSTANT DIRECTIVITY switches OFF (unless you’re using constant directivity horns with compression drivers).

5.Turn the LIMITER switch ON to provide protection against clipping.

6.Determine which AMP MODE is best for your application:

•STEREO mode (separate left and right inputs, separate left and right outputs) is the typical setup for amplifying stereo signals.

•MONO mode (sometimes called Dual- Mono mode — one or two inputs, two mono outputs) is for sending the same signal to two different speakers, with separately-adjustable level controls.

•BRIDGE mode (sometimes called Bridged-Mono — one or two inputs, one mono output) uses both sides of the amp to power one speaker. An M•800 power amplifier in BRIDGE mode delivers 800 watts (into 4 ohms).

7.In STEREO mode, connect line-level cables

from your mixer or preamplifier to the INPUT jacks, either XLR or TRS:

•The balanced XLR inputs are wired

pin 2 = hot (+) pin 3 = cold (–)

pin 1 = shield (ground).

•The 1/4" TRS inputs are wired tip = hot (+)

ring = cold (–)

sleeve = shield (ground)

They can accept either balanced (TRS) or unbalanced (TS) cables.

• The XLR and TRS inputs for each channel are internally wired in parallel.

8.In BRIDGE mode, connect an input cable to CH 1 or CH 2 INPUT or both.

 

 

FULL SYMMETRY DUAL DIFFERENTIAL HIGH CURRENT DESIGN

 

PROFESSIONAL POWER AMPLIFIER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CH GAIN/dB

1

 

3v

 

16

18

20

 

 

 

2v

14

 

 

22

12

 

 

24

626

00

28

1v

SENSITIVITY 1.23v (+4dBu)

SIG OL

OL

–3

–3

–6

–6

–9

–9

–20

–20

CH STATUS

1&2

 

NORM

HOT

GAIN/dB

CH

 

 

3v

2

 

16

18 20

ON

 

 

2v

 

14

 

22

 

12

 

24

 

6

 

26

OFF

 

 

00

28

 

 

1v

 

 

SENSITIVITY

1.23v (+4dBu)

POWER

4