Shonks Posted April 22, 2012 Share Posted April 22, 2012 (edited) right, here we go...i'll try and explain it best I can......... my 5 string has the J East deluxe preamp and my 4 string has the regular J retro. The difference between the two is the deluxe version has a 4th control which is passive and effects the overall tone wether in active mode or passive. I love this, it's like having two basses in one. In passive mode it's just a regular passive bass - 'old school' on a switch! In passive mode on the regular J retro, there's no tonal control in passive. Its still great, but knowing what I'm missing because of my other bass is getting me thinking..... The deluxe has a small circuit board running from the pickup inputs of the pre amp and is effectively smoothing them down to earth before they hit the preamp. I assume the board's job is, besides attenuating the earth through a cap is also keeping the p'ups independent from each other - correct me if I'm wrong. So it occurred to me, that if I put a regular passive tone pot after the preamp with a 250k pot and a cap of some sort, taking the single hot wire before it hits the jack output, that it should work in the same way as a regular passive tone, providing I only use it in passive mode. I'm assuming in active mode the impedance might be a lot different and impact negatively on my active sound. you reckon this'll work?? all advice welcome - please!!! Edited April 22, 2012 by Shonks Quote Link to comment Share on other sites More sharing options...
Shonks Posted April 22, 2012 Author Share Posted April 22, 2012 found this which answers my query, [url="http://www.talkbass.com/forum/f38/adding-passive-tone-pot-active-preamp-431666/"]http://www.talkbass.com/forum/f38/adding-passive-tone-pot-active-preamp-431666/[/url] Quote Link to comment Share on other sites More sharing options...
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