The control voltage can leak into the audio path and the distortions that the vca generates. The input signal is received via a transformer and fed to the single gainreduction element which comprises a vca built around a diode bridge an inherently balanced circuit by the way.

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The diodes can be thought of as variable impedance it must be balanced in design to avoid a large dc component on its output.

Diode bridge vca. Where opto and vca compressors generally do not produce a lot of distortion diode compressors tend to colour the sound quite a bit. Fet optical valve vca compressors when to use them. Suitable for applications that require smooth and steady dc supply voltage.
Bridge rectifiers a bridge rectifier is an array of diodes configured to change ac electricity into full wave dc electricity. Where the vca compressor found in the 543 and master buss processor provides unmatched clarity the weighty harmonically rich tonality of diode bridge compression can be essential in pushing key sources like vocals electric guitars bass and drums to the forefront of a mix. What diode bridge compressors separate from other compressors is the distortion that it generates which creates harmonics.
A vca lets a percentage of the energy through determined by a control voltage it is a variable gain amplifier or voltage controlled amplifier. Fet pwm vca opto vari mu diode bridge youtube. The problem is when the control voltage is changed there are undesired things that happen.
Diode matching is critical. It is intended to deliver a punchy kind of compression which is intentionally vibey and characterful. In contrast to the 543 vca compressor the 535 diode bridge design is the opposite of transparent.
A diode bridge compressor uses a diode to control the gain reduction. This is a very lossy circuit and the output level is typically around 40db lower than the input. In contrast to more frequently used gain control designs such as fet opto and vca compressors the diode bridge compressor 8004274804 info at tsmstudiocom 240 e palmetto ave.
Rupert neves original diode bridge compressors like the 2254 served as an inspiration for the design of the 535. 50 videos play all mix all types of compressors explained. Diode bridge a number of compressors designed in the 60s used this basic design.
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