captainate
Member
Hey all,
I am altering the audio circuit of a Rhodes Mark I Stage Piano (1978). The stock circuit is shown below (sorry if it's poorly organized, it's my very first drawing).
C1 is .047mfd
R1 is 50k Reverse Audio Taper
R2 is the volume pot, 10k Audio Taper
I decided to swap the stock cap and see how it would sound. I tried different values and REALLY liked the .022mfd cap I put in. However, the taper is wrong. The "Bass Cut" (Pot on lug 2 and 3) is good, but as it sweeps up, boosting the bass, it is too much. I threw in a 100k Lin Taper pot to see if added resistance would change the threshold, and it was closer to the desired sound when pot was all the way right (from user's perspective, pot on lugs 1 and 2). However, since it was linear taper, it only boosted the bass at the last 90% of the rotation. I can't find 100k Rev Audio taper pots online, and I don't know how to make the taper sound right. Any ideas? Thanks for your help,
~Nathan
**broken link removed**
I am altering the audio circuit of a Rhodes Mark I Stage Piano (1978). The stock circuit is shown below (sorry if it's poorly organized, it's my very first drawing).
C1 is .047mfd
R1 is 50k Reverse Audio Taper
R2 is the volume pot, 10k Audio Taper
I decided to swap the stock cap and see how it would sound. I tried different values and REALLY liked the .022mfd cap I put in. However, the taper is wrong. The "Bass Cut" (Pot on lug 2 and 3) is good, but as it sweeps up, boosting the bass, it is too much. I threw in a 100k Lin Taper pot to see if added resistance would change the threshold, and it was closer to the desired sound when pot was all the way right (from user's perspective, pot on lugs 1 and 2). However, since it was linear taper, it only boosted the bass at the last 90% of the rotation. I can't find 100k Rev Audio taper pots online, and I don't know how to make the taper sound right. Any ideas? Thanks for your help,
~Nathan
**broken link removed**
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