Instrukcja obsługi Knoll Systems MA252

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Trigger does not 1. Measure trigger voltage with a voltmeter. It
work needs to be 11-16 volts DC to work (current is
MA252
about 35mA total per amp). See page 5 for details.
Stereo Amplifier

Installation Instructions v1.0
Speaker pops 1. Speaker may need resistor placed across terminal.

when MA252 is Suggest 2000 ohm 1/4 watt. This discharges the

turned on or off speaker internal capacitor if it has one.
Warning: To be installed and/or used

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Precautions: The amplifier is a wideband design with Knoll Systems service information The MA252 amplifier does not contain any user serviceable parts inside. substantial power output capability. Certain precautions must be If a problem is encountered with the MA252, the most expedient taken to ensure proper operation: procedure is to locate the problem and if possible repair it before requesting service. Be sure to carefully check other system 1. Never expose the unit to moisture. co

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Hum and noise Installation In most cases, one of the following suggestions should help you Installing the MA252 should be relatively easy. With a bit of solve a hum noise in your system. Please try these steps in the planning, the MA252 will give trouble-free service for years. order shown, proceeding from one step to the next if the prior suggestion does not eliminate the problem. 1. The most important consideration when installing the MA252 is cooling. The MA252 has a lot of power packe

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9. If a video signal is being used to trigger the MA252 on and 12. If the 12 volt trigger is being connected, use a 12 VDC off, connect good quality short as possible video wire with a RCA source (about 35mA) with a 3.5mm mono jack. Knoll PS1202 jack to the MA252 “Video Input”. Make sure the music sense with a new 3.5mm jack works well. 5 VDC triggers will not work. button is OUT. 10. If the music sense or video input is being used to turn the Caution: Never listen to sound that is disto