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1. Save the carton and packing material even if the equip-
ment has arrived in good condition. 
Should you ever
need to ship the unit, use only the original factory pack-
ing.

2. Read all documentation before operating your equip-
ment. 
Retain all documentation for future reference.

3. Follow all instructions printed on unit chassis for
proper operation.

4. Do not spill water or other liquids into or on the unit,
or operate the unit while standing in liquid.

5. Make sure power outlets conform to the power re-
quirements 
listed on the back of the unit.

6. Do not use the unit if the electrical power cord is
frayed or broken. 
The power supply cords should be
routed so that they are not likely to be walked on or
pinched by items placed upon or against them, paying
particular attention to cords and plugs, convenience re-
ceptacles, and the point where they exit from the
appliance.

7. Always operate the unit with the AC ground wire
connected 
to the electrical system ground. Precautions
should be taken so that the means of grounding of a
piece of equipment is not defeated.

8. Mains voltage must be correct and the same as that
printed on the rear of the unit. 
Damage caused by
connection to improper AC voltage is not covered by
any warranty.

9. Have gain controls on amplifiers turned down during
power-up 
to prevent speaker damage if there are high
signal levels at the inputs.

10. Power down & disconnect units from mains voltage
before making connections.

11. Never hold a power switch in the “ON” position if it
won’t stay there itself!

12. Do not use the unit near stoves, heat registers, ra-
diators, or other heat producing devices.

13. Do not block fan intake or exhaust ports. Do not
operate equipment on a surface or in an environment
which may impede the normal flow of air around the
unit, such as a bed, rug, weathersheet, carpet, or com-
pletely enclosed rack. If the unit is used in an extremely
dusty or smoky environment, the unit should be peri-
odically “blown free” of foreign matter.

14. Do not remove the cover. Removing the cover will
expose you to potentially dangerous voltages. There
are no user serviceable parts inside.

15. Do not drive the inputs with a signal level greater
than that required to drive equipment to full output.

16. Do not connect the inputs / outputs of amplifiers
or consoles to any other voltage source, 
such as a
battery, mains source, or power supply, regardless of
whether the amplifier or console is turned on or off.

17. Do not run the output of any amplifier channel
back into another channel’s input. Do not parallel- or
series-connect an amplifier output with any other
amplifier output.

Audio Telex Communications Pty Ltd is not respon-
sible for damage to loudspeakers for any reason.

18. Do not ground any red (“hot”) terminal. Never
connect a “hot” (red) output to ground or to another
“hot” (red) output!

19. Non-use periods. The power cord of equipment
should be unplugged from  the outlet when left un-
used for a  long  period of time.

20. Service Information Equipment should be serviced
by qualified service personnel when:

A.  The power supply cord or the plug has been
damaged.
B. Objects have fallen, or liquid has been spilled into
the equipment
C. The equipment has been exposed to rain
D. The equipment does not appear to operate normally,
or exhibits a marked change in performance
E. The equipment has been dropped, or the enclosure
damaged.

Important Safety Information

Summary of Contents for ACM250P

Page 1: ...ACM250P 250w Power Amplifier Operating Manual POWER ON SIGNAL PROTECT ...

Page 2: ... that the ACM250P is receiving audio signal via its line level input The signal LED is a simple method to trouble shoot installations especially in multi amplifier projects At a glance the signal LED will indicate that audio is reaching the amplifier Protect LED A feature of the ACM250P is high temperature protection In most applications the internal cooling fan will most probably never switch on ...

Page 3: ...r load When used individually the low impedance load should be 4 ohms or higher while the 100v line load should not fall below 40 ohms When both outputs are used simultanously ensure that neither output is loaded to maximum Level Control Located to the left of the XLR input output is a recessed screwdriver adjustable level control The level control is an input attenuation control normally used to ...

Page 4: ...output allowing the input signal to be distributed split to other amplifiers In some projects the same input may be looped through to multiple amplifiers using this method Up to 6 amplifiers can be looped together without any noticeable loss in level A distribution amplifier should be used when more than 6 amplifiers need to be looped The XLR s are wired as follows Pin 1 Shield Pin 2 Hot Positive ...

Page 5: ...at producing devices 13 Do not block fan intake or exhaust ports Do not operate equipment on a surface or in an environment which may impede the normal flow of air around the unit such as a bed rug weathersheet carpet or com pletely enclosed rack If the unit is used in an extremely dusty or smoky environment the unit should be peri odically blown free of foreign matter 14 Do not remove the cover R...

Page 6: ...ey QLD 4006 Ph 07 3852 1312 Fax 07 3252 1237 E mail qld audiotelex com au Adelaide SA NT Sales P O Box 157 Hindmarsh SA 5001 31 Walsh Street Thebarton SA 5031 Ph 08 8352 4444 Fax 08 8352 4488 E mail sa audiotelex com au Perth WA Sales P O Box 404 North Perth WA 6906 299 Fitzgerald Street West Perth WA 6005 Ph 08 9228 4222 Fax 08 9228 4233 E mail wa audiotelex com au Auckland NZ Sales P O Box 512 A...

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