BigRedX Posted February 21, 2008 Share Posted February 21, 2008 I recently bought 2 second-hand basses that have had their electrics extensively (and not particularly skillfully mod'ed) As I don't think that these modifications add anything useful to the sound and the fact that the components are now old and noisy, I want to get them back to something close to their original state, but can't find any info for the particular models I'm after. What I need therefore is accepted values of Capacitors for passive tone controls for both single coil and humbucking pickups and also for treble bypass on the volume controls. Are these different to guitars? Any info please? Quote Link to comment Share on other sites More sharing options...
johnnylager Posted February 21, 2008 Share Posted February 21, 2008 Try this [url="http://www.seymourduncan.com/support/wiring-diagrams/"]http://www.seymourduncan.com/support/wiring-diagrams/[/url] and this [url="http://books.google.com/books?id=aFuTGafghokC&pg=PA80&lpg=PA80&dq=bass+capacitor+values&source=web&ots=CZ8B2Kqlo1&sig=amyIbme_5tCHrd_GdYmhTGUdj1k#PPA80,M1"]http://books.google.com/books?id=aFuTGafgh...GUdj1k#PPA80,M1[/url] The Jazz has a 0.047 microfarad cap. Quote Link to comment Share on other sites More sharing options...
BigRedX Posted February 22, 2008 Author Share Posted February 22, 2008 Ta! Seems to use the same values as guitars... I quite like the idea from your second link of using a .047µ on the neck and a .022µ at the bridge. Since neither link doesn't even mention the use of treble bypass caps, does anyone have them on the volume controls of their passive basses and can tell me the values? Quote Link to comment Share on other sites More sharing options...
BOD2 Posted February 22, 2008 Share Posted February 22, 2008 I can't find details on treble bypass for BASS but here's some info for guitars - [url="http://www.ratcliffe.co.za/articles/volumepot2.shtml"]Treble Bypass[/url] [url="http://www.diyguitarist.com/Guitars/VolumeTrebleMod.htm"]Capacitor Values[/url] [url="http://www.soundonsound.com/sos/apr06/articles/guitartech_0406.htm?print=yes"]SoundOnSound[/url] [url="http://www.bothner.co.za/articles/volumepot2.shtml"]Strat Mods[/url] Quote Link to comment Share on other sites More sharing options...
BigRedX Posted February 22, 2008 Author Share Posted February 22, 2008 Many thanks! I was hoping to find some specific values used in passive bass wiring, but given that the tone caps seem to be the same as for guitars, I'll have a play with the suggested guitar value caps and resistors on the volume control. Quote Link to comment Share on other sites More sharing options...
alexclaber Posted February 22, 2008 Share Posted February 22, 2008 0.022uF for maximum subtlely, 0.047uF typically, and 0.1uF for maximum dubness, tend to be the typical values. I have 0.047uF in my RIM Custom. Have never experimented with treble bypass cabs, I'm more a full volume for almost everything kind of person and if I want to be quieter I pluck more softly. Alex Quote Link to comment Share on other sites More sharing options...
BigRedX Posted February 22, 2008 Author Share Posted February 22, 2008 Thanks Alex. I'll order a few of each value and have a play. I mainly use the volume control for fading out sustaining notes at the end of the songs rather than level adjustments, therefore I need something that actually works smoothly. Quote Link to comment Share on other sites More sharing options...
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