Page 1 of 2
4005 cap mod?
Posted: Fri Dec 30, 2005 3:59 am
by dminer
I'm just curious if any of you 4005 owners have done the cap mod on your basses? If so, is there as big of a difference on the sound from the bridge toaster as there is on the 4001 mod?
thanks...dm
Posted: Fri Dec 30, 2005 4:40 am
by jps
There is no .0047 cap in a 4005, so no mod neccesary.
Posted: Fri Dec 30, 2005 2:14 pm
by dminer
"There is no .0047 cap in a 4005, so no mod neccesary."
Am I missing something here? The rick schematics for the 4005 show a c3/.0047 cap between the treble volume control and the 3 way selector switch and my 4005 has a small light blue/turquoise cap in this exact position...someone here also sent me some pics of their 4005 controls and they have the same little cap in this position....from the middle lug of the treble volume pot to the selector switch!
The bridge toaster pup sounds really thin and I was hoping to boost the output. dm
Posted: Fri Dec 30, 2005 2:22 pm
by dswp
????????????????????????
Posted: Fri Dec 30, 2005 3:51 pm
by jps
That has to be a mistake and someone added the cap to your bass.
Posted: Fri Dec 30, 2005 3:55 pm
by beatlefan
Neither one of mine has that cap.
Posted: Fri Dec 30, 2005 4:56 pm
by dminer
Dave, Thanks...that's the picture...my 66 has the same light blue cap and I'm pretty sure it's original...considering that it IS in the schematics diagram and that both Dave's and mine have the exact same cap it would seem more likely that someone had removed the cap from the 4005's that don't have them...dm
Posted: Fri Dec 30, 2005 5:51 pm
by jps
I think the schematics are wrong.
Posted: Sun Jan 01, 2006 2:17 pm
by johnhall
The 4005's all had the cap and the turquoise one pictured is one of the types that was used.
Posted: Sun Jan 01, 2006 2:29 pm
by beatlefan
Well, there 'ya have it!
Posted: Sun Jan 01, 2006 3:26 pm
by jps
That's interesting! I remember sometime last year this question was asked and John said the opposite! Time to look inside mine again.
Posted: Sun Jan 01, 2006 3:57 pm
by dminer
Alright, I'm gonna do the mod tomorrow and I'm sure it'll make a big difference...when I bought a used 74 4001 a few years ago I thought that it sounded bassier than ricks I remember...so, during this cap confusion, I looked inside the 4001 and the cap had already been removed. I'm looking forward to the added thump that this should provide. Thanks John and Happy New Year to all...dm
Posted: Sun Jan 01, 2006 5:19 pm
by kcole4001
You only have to twist a wire tightly to bridge the cap, no need for soldering/unsoldering any of the factory wiring, in case you're bothered by messing with vintage issues.
Posted: Sun Jan 01, 2006 7:33 pm
by dminer
Thanks Kevin...thats' a good idea...David
Posted: Mon Jan 02, 2006 4:23 am
by kcole4001
I did that on my 4080 since I dislike soldering. On a 4005 you'd most likely want to preserve the originality of it. Plus it's easier, faster & works just as well
And it DOES make a huge difference!