DBC-20 Diode Bridge Compressor Users Manual DBC-20 USERS MANUAL VERSION-1, NOVEMBER 2014. CONTENTS COPYRIGHT BUZZ AUDIO LTD 2014. PO BOX 6677, TE ARO. WELLINGTON, 6141 NEW ZEALAND. PH. +64-4-472-3084 www.buzzaudio.com email management@buzzaudio.co.
Welcome… Thank you for choosing the Buzz Audio DBC-20 Diode Bridge Compressor. In this manual you will find important information regarding the use of the DBC and we suggest you do read it before using the unit to become familiar with all the controls and their function. If after unpacking the DBC you find any damage to the unit you should contact your dealer or supplier immediately for advice on what to do.
1] Installation Precautions Normally the DBC can be mounted into a rack without any special ventilation requirements as it runs pretty cool. If there are other units in the rack above and below the DBC that run hot, it may be necessary to allow for ventilation gaps between the units to avoid over heating. Excessive heat for long periods can shorten the life of all electronic devices. 2] The Mains Input The DBC-20 mains input can be set to run from 110V or 230V.
] Controls and Indicators The DBC-20 has two channels with identical controls. The DBC utilizes silicon diodes in a transformer coupled balanced arrangement as the gain reduction element and has a unique self-adjusting ratio control. COMPRESSION This control adjusts the amount of signal sent to the side chain circuit and therefore the amount of gain reduction (or compression) applied to the input signal. Clockwise rotation increases the amount of gain reduction.
HARD-SOFT This control selects between two modes of operation. In HARD mode the selfadjusting ratio control is in normal operation. When switched to SOFT the automatic ratio is modified and a measured amount of dynamic is retained. It’s easier to try it and hear how it works rather than describe it here, but it is useful when lighter compression effects are desired.
5] Specifications Maximum Input Level = +27dBu Maximum Output Level = +27dBu Frequency Response = 6Hz to 400kHz Noise = -80dBu A weighted (measured with 10dB make up gain applied) Harmonic Distortion at +10dBu input level and no gain reduction = 0.28%@100Hz, 0.25%@1kHz, 0.15%@10kHz Harmonic Distortion with 10dB gain reduction (release 400mS) 1.5%@100Hz, 0.5%@1kHz, 0.5%@10kHz Gain variable from 0 to +15dB Dimensions = 1U rack mount case (482W x 44H x 250D) Weight = 2.
] Product Warranty • Disclaimer Buzz Audio Ltd is not liable for any damage to microphones, amplifiers, consoles, speakers or any other equipment and/or electric shock to humans that is caused by negligence or improper installation and/or use of the DBC-20 Diode Bridge Compressor.
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