- Jan 22, 2008
Where? LDR are very linear, until they go into thermal problems (takes very large signals).i read that ldr gives more distortion with more current through the ldr
The LDR is not the main source of distortion, it's the variations of illumination that result from the side-chain timing. If the release time was infinite, distortion would be almost unmeasurable, even with very high level (+20dBu).
In more general terms, in a compressor, the gain cell (FET, vari-mu, optocoupler, VCA) usually generates less distortion than the side-chain, particularly at low fequencies.
There is not much flexibility there because the LDR becomes very slow at low illumination.So using it for attenuating higher impedance source signal may be cleaner? in place like after stepping up transformer before 1st tube of mic preamp