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x0x:voltagecontrolledamplifier [2007/12/03 05:12] subatomic |
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q31 creates the current that controls the amplitude of the vca\\ | q31 creates the current that controls the amplitude of the vca\\ | ||
q1 through q4 are merely current mirrors to reflect this current appropriately to the 6110 since it is different than the 662 | q1 through q4 are merely current mirrors to reflect this current appropriately to the 6110 since it is different than the 662 | ||
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+ | ==== note from bcbox ==== | ||
+ | [[http://www.ladyada.net/forums/viewtopic.php?t=5673|The]] output of the BA6110 is a few dB hotter than the BA662, I measured as much as 5dB. | ||
+ | If using the BA6110 changing R155 to 100k will give the same performance as a tb-303. | ||
+ | There will still be some distortion with higher settings of volume and accent - the tb-303 does it too. | ||
+ | Or you can simply turn down the volume control down until it doesn't clip (the 'mixer' stage is after the volume control). | ||
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