via this auction
"The r-52 uses two pentodes, type 12au6. the circuit is derived directly from our award-winning tm-2 filter, but with all the features of our tm-6 filter. a pair of bandpass filters is swept with a vactrol(tm) control element, a resonant treble filter and a less-resonant bass filter, giving a 4-pole lowpass response. filter sweep range (approx): bass-only 80-200 hz, bandpass/lowpass low setting 300-1000 hz, high setting 800-1900 hz. filter resonance/q adjustable from less than 1 to oscillation. voltage gain approx. 2 with resonance set to 10 o'clock position and input level set to maximum. both filters, or one at a time, may be selected and mixed in desired amounts using the front-panel response control. this allows for a wide range of equalization and special sound effects. cv inputs are available for sweeping the cutoff frequency and for affecting the treble filter's resonance. circuit distortion is less than 0.5% typical. power requirement: +-12v dc, 150 ma"
No comments:
Post a Comment
Note: comments that insult people will be removed. Critique on gear is allowed. Do not ask if listings are still available. Click through auction links to check yourself. Posts and pics remain for historical purposes. To reduce spam, comments for posts older than one week are not displayed until approved (usually same day).