User manual AUSTRALIAN MONITOR CONTRACTOR TOOLS BROCHURE

[. . . ] This symbol is reinforced with the text: ICAUTION!RrsK oF ELEcTRTcAL sHocK /lt\ Do Nor oPEN , / t \ The presence of an EXCLAMATION MARK contained within the boundaries of a equilateral triangle is intended to alert the user thal there is important operating and mainlenance literature that accompanies the unit. NO USER SERVICEABLE PARTS INSIDE The unit does not contain any parts which the user can service or re-use in this or any other product. lf you are in need of special assistance and the informa- tion you require is outside the scope of this manual, please contact your nearest service agent or Australian Monitor direct: THE TECHNICAL OFFICER AUSTRALIAN I\, 4ONITOR Pry LTD, 29 HOPE ST ERMINGTON. N. S. W. IWARNING! DO NOT EXPOSE TO EITHER RAIN OR MOISTURE The unitshould not beoperated in a situation where it may encounterlhe entry ofwater, rain, or anyfluids. To expose AUSTRALIA. the unit to the above conditions may make the operation of the unit hazardous and increase the risk of electrical shock. 21 15 Local lntemational (02) 874 (612) 874 Phone 9355 9355 Fax (02) 874 9366 (612) 874 9366 /tu Contents 1. [. . . ] Standard units offer speed control fans which are turned on when the output level s above 2 watts into 4 ohms. The C800 & C1200 offer two speed fans which normally run at half speed, and switch to full speed when the internai heatsink temperature exceeds 60oC (128"F). An unrestricted airflow into and out from the unit must be provided. Any restriction of the air flow will cause heat to build up within the unit and possibly force the unit into its thermal shutdown mode. (or colored BLACK in USA and Canada, or coloured RED in the United Kingdom). Power Requirements Ensure that your mains supply voltage is the same as the rear panel mains voltage marker. Each model's power consumption is as follows: 110-120 Volt Models Amps C300/Opal1202lPA3 C600/Opal2802/PA6 c800/PA8 c1200tPA12 6 15 15 ?0 Watts Watts at at idle full power 50 100 120 160 idle 450 1000 1400 2200 220-240 Volt Models Amps Watts at Watts at 450 1000 1400 C300/Opal1202/PA3 C600/Opal2802/PA6 c800/PA8 3 6 7 10 c1200tPA12 50 100 120 160 full power 2200 Australian Monitor /tu I I 10 Installation Input Wiring NOTE. lnput signal ground safety ground (earth). OutputWiring is not to bo used as a When wiring to your speakers always use the largest gauge wire your connector will accept. The longer the speaker lead the greater the losses will be, resulting in reduced power and less damping at the load. Some in-line XLR connectors have a termination lug that connects directly to the chassis ofthe connector. Do not link this lug to pin 1 at the amplifier's inpui as it will defeat the amplifier's input grounding scheme. This lug is often referred to as a'drain'and is used to provide a circuit to the chassis (not signal ground) for shielding purposes. This is usefulwhen further isolation of signal grounds is required between source and destination, eg to help in reducing earth loop noise, or noise induced into signal grounds from stray magnetic fields. /tu Installation 11 SINGLE@NNECTION BRIDGEDCO NECTION C8 A/LFFT OR cH 8/FlrcsT SPE AK ON DUAL CONIGCNON CHA CH A/L SPEAKON Figure 4 Neutik'Speakon' Connector wiring Australian Monitor /tu t2 4. Operation IMPORTANT All signal source equipment should be adequately earlhed. This not only ensures your safety but everybody else's as well. This limits the mains cunent to prevent 'nuisance-tripping' of circuit breakers caused by high starl-up cunents. /tu Operation l3 (2, 000) or lower to avoid unwanted highfrequency loss in the cabling. lnput overload occurs at +20. 5d8u (8. 25 volts). See the specification section for more detailed informa- There are thr'ee things you can do to avoid earth loop problems: 1 . Ensure your niains power for the audio system is . quiet' tion. i. e, without'equipment on il such as air-conditioning, refrigeration or lighting which wilt generate noise in thl earth circuit. Ensure all equipment within lhe system shares a common ground or safety earth point. This will reduce the possibility of circulating eartl cunents, by referencing equipmentto the same ground potential. Ensure that balanced signal leads going to the amplifier are connected to earth at one end only. Hum Problems Mctstequipment is designed for minimum hum when used under ideal conditions. When connected to other equipment and to safety earth in an electrically noisy environment problems will often occur. The three 'E's of hum and hum related noise which can plague your audio system are: a) Electrostatic radiation, b) Electromagnetic radiation, and c) Earth loops Signal Gound-Lifr Switch (c800 & Ci200 onty) When proper system hook-up has been carried out, you may still have some hum or hum related noise. This may be due to any of the previously mentioned gremlins. Electrostatic radiation capacitively couples to system elements causing an interference voltage that mainly affects higher impedance paths, such as amplifier inputs. The source is generally a nearby high voltage such as a mains lead or a speaker lead. The problem can usuallybe reduced by moving the offending lead away, or by providing additional electrostatic shielding (i. e. an earthed conductor which forms a banier to the field). The Contraclor Series amplifiers have a , signal Ground Lift'switch which disconnects lhe input ground wiring from the amplifier. [. . . ] You should use an ohmmeter to check continuity. Fans Due to the openness ofthe air path through your amplifier, very little dust should settle within the amplifier. The unit has been designed so that any dust and/or foreign particles that do settle within the amplifier will not unduly hinder the cooling of the unit. Over time, dust may build up on the leading edge of the fan blades and reduce their cooling efflciency. The time taken for this to happen will depend on the environment and the amount of use. /tu , '7 8. Wananty Australian Monitor Pty Ltd, oi 29 Hope St, Ermington, Sydney, N. S. W. [. . . ]