Parasound hca 1206 owners manual
This is the 11 pages manual for parasound hca 1206 owners manual.
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Extracted text from parasound hca 1206 owners manual (Ocr-read)
Page 1
-2- Placement of Your HCA-1206 Place your HCA-1206 away from heat sources such as hot air ducts or radiators. Make sure that your cabinet or shelf can support its enormous weight. Always place your unit horizontally. Do not place your unit directly on a carpet whose pile could interfere with air flow into its bottom vent openings or heat sinks. If you place your HCA-1206 on the floor near your speakers, elevate it above the pile of the carpet. If you stack your components, it is better to place your HCA-1206 alongside other components. Rack Mounting Your HCA-1206 Your HCA-1206 can be mounted into a standard EIA 3 unit 19" rack. Make sure you select heavy duty mounting bolts and nuts and use washers under the heads of the bolts to avoid scratching your amplifiers anodized front panel. Do not attempt to hold your unit in place yourself while you attach the bolts and nuts. Have a strong helper support the unit as it is being attached to the rack. The heat generated by the HCA-1206 may require a fan to assist air flow and if you have another component mounted directly above it in the rack. Ventilation Requirements for Your HCA-1206 Your Parasound power amplifier is designed to operate with high idling, or bias, current to reduce higher- order harmonic distortion. This bias optimization is characteristic of all Parasound power amplifiers and is perfectly normal, but it results in noticeably warm operation even when no signal is present. While many other amplifiers manufacturers have chosen to bias their amplifiers at a lower level to run cooler, we bias our amplifiers so the output transistors are allowed to operate in a much more linear region. Although the amplifier may run a little warmer than other amplifiers, we feel the resulting sonic improvements are significant and justified. However, to insure safe and reliable operation, it is very important that the amplifier has plenty of ventilation to prevent overheating and automatic shut down from the thermal protection circuitry. Please observe the following guidelines when installing your Parasound power amplifier: 1. If you are not using a fan, allow at least six inches on each side and above the amplifier, and do not close off the front with a door or panel. 2. If you are enclosing the amplifier in an equipment cabinet, use a fan and draw in cool air or exhaust warm air. In either case, two vent holes are required: one for intake and one for exhaust. 3. Do not place the amplifier on carpeting which will obstruct the air flow from the bottom of the amplifier. 4. If you plan on stacking amplifiers, you must use a fan. Minimum Impedance Precautions You may connect loudspeakers with a 4 W or 8 W nominal impedance for unbridged operation. Your HCA-1206 is capable of driving speakers with occasional impedance dips well below 2 W. However, Lower nominal impedance loads are not recommended and may cause overheating. The HCA-1206 is designed for a minimum 8 W nominal impedance for each speaker connected to bridged channels 3+4 or 5+6. Use of lower impedance at high listening levels may cause overheating or trigger one of the amplifier's protection circuits. These restrictions result from the mathematics of the bridging circuitry. In the bridge mode each channel of the amplifier functions for only the + or - half of the musical waveform. Thus, each channel "sees" only half of the speakers impedance. Use of an 8 W speaker means that the load for each channel is 4 W. And for a 4 W speaker, it would result in only 2 W .
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-3- HCA-1206 Front and Rear Panel Controls Figure #2 HCA-1206 Front Panel Controls Figure #1 HCA-1206 Front Panel Controls Overload CH 1CH 2CH 3CH 4CH 5CH 5 Power Operation Stand by Power Switch Standby/Operation LEDsCurrent Overload LEDsEIA Rack Mount Holes HCA-1206 High Current Multi Amplifier LU CA SFILM LUCASFILM HCA - 1206High Current Multi-Amplifier Parasound Products, Inc San Francisco, CA U.S.A. CAUTION:TO PREVENT ELECTRIC SHOCK, DO NOTREMOVE COVER. NO USER SERVICEABLEPARTS INSIDE. REFER SERVICING TOQUALIFIED SERVICE PERSONNEL. Power Consumption: 600 W CAUTIONRISK OF ELECTRIC SHOCK DO NOT OPEN InputsFuse 15A + Power AC 120V 60Hz WARNING:TO PREVENT FIRE OR SHOCK HAZARD.DO NOT EXPOSE THIS UNIT TO RAINOR MOISTURE. Mono Bridging Separate CH 3, CH 4 Loop 1/2-3/4 On Off Loop 1/2-3/4 On Off Mono Bridging Separate CH 5, CH 6 Non- BridgeableMono Bridging 8 W MinMono Bridging 8 W Min + Levels CH 6 CH 5 CH 4 CH 3 CH 2 CH 1 Main Fuse AC Cord Connector Carry Handle Bridge Switches Input Looping Switches Level Controls Input Connectors