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A good manual! fast service and good qualityi for pdf document.
thanks!
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Very helpful and complete manual. Maybe only one negative is schematics have sometimes unreadable name of the parts. But it's not a big problem.
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Excellent high quality schematics brought my old Heidelberg back to life. Fast download at a reasonable price. Thanks.
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This document is just what I was looking for, it´s very useful, it contains adjustment procedures for the final stage of the power amp and also
has a complete wiring diagram and description of the main semiconductors used in the design.
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Dear Sirs,
Thank you for the fast support, the manual does provide all necessary information to repair the radio. All schematics are in a good quality for reading.
The manual fits 100% to my requirements as a technican.
Kind regards Thomas
Professional Audio System Components
2.1.9
Limiter Voltage Processor
1.914.519
Together with this voltage processor, the VCAs 1.914.518/528 can perform as signal level limiters.
The processorâs threshold can be set within a wide range of levels, so that limiting action becomes effective at a desired level within a range of â15 to +15 dBu. Limiting action attacks within 1 ms, whereas release can vary from 50 ms to 5 s, depending on the programâs energy content. This means that no audible âpumpingâ action â which is often associated with such a device â will occur. After the cessation of loud passages, amplification will recover only slowly. For stereo applications, a two-channel setup (VCAs and voltage processor) can be linked, so that identical amounts of gain reduction will take place simultaneously in both channels.
The input of the voltage processor has to be wired to the output of the VCA. The processorâs output, when connected to the VCAâs control terminal, will effect the necessary gain reduction so that a limiting characteristic is obtained. The limiting threshold is adjustable in a wide range. Remote on/off switching of the limiter function is possible.
Date printed: 29.11.01
E17
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