Switchable Hi-Z input impedance, how ? - Page 64 - diyAudio
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Old 17th July 2013, 06:14 PM   #631
tinitus is offline tinitus  Europe
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Quote:
Originally Posted by shanx View Post
What is the resistance of the tone pot?

all 3 pots are the same...500K

occationally I have had minor noise issues
funny kind of very subtle fizzle sound that followed each node
yesterday I thought it was a too big resistor on tone pot when I tried a 20K

but it wasn't the reason
it was caused by dodgy old RCA connectors and plugs
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Old 17th July 2013, 09:22 PM   #632
tinitus is offline tinitus  Europe
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now tone cap is 0.033uf (again)
also tried 3x 10n, which is about the same
but this single green one somehow sounds smoother

cap type does seem to matter
metallic sound is now replaced by a light crispy sound
I think its as good as it gets this way
and Im not even sure I want to change strings now
but would probably have been next on my list
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Old 18th July 2013, 08:49 AM   #633
AndrewT is offline AndrewT  Scotland
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Quote:
Originally Posted by tinitus View Post
now tone cap is 0.033uf (again)
also tried 3x 10uf, which is about the same...........
did you mean to type "tried 3x 10nF" ?
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Old 18th July 2013, 09:06 AM   #634
tinitus is offline tinitus  Europe
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yes, 3x 10n

corrected, thanks
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Old 19th July 2013, 02:46 PM   #635
tinitus is offline tinitus  Europe
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and my faithful little shortscale P-bass is fit for fight again, and better than ever
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Old 19th July 2013, 03:07 PM   #636
shanx is offline shanx  Canada
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Totally agree that cap types matter, and cleaning up the wiring is a good thing too. Sorry for repeating but IMO shielding the inside with copper tape can be big improvement for hum & RFI reduction, if you need it.
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Old 22nd July 2013, 09:35 AM   #637
tinitus is offline tinitus  Europe
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Quote:
Originally Posted by shanx View Post
... shielding the inside with copper tape can be big improvement for hum & RFI reduction
maybe its more important with active curcuits

and my new 5 string showed to be exstremely noisy cheap stuff

ripped out the active curcuit
I think the pickups are passive designs
but Im not 100% sure

hmmm, pots are lowish 100K and 50K...
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Old 22nd July 2013, 01:44 PM   #638
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Quote:
Originally Posted by tinitus View Post
maybe its more important with active curcuits

and my new 5 string showed to be exstremely noisy cheap stuff

ripped out the active curcuit
I think the pickups are passive designs
but Im not 100% sure

hmmm, pots are lowish 100K and 50K...
Fairly obviously active pots are lower value than passive ones, no need for the high values with active.

I've never seen any problems with active basses either, all sound great and are nice and quiet. It's not rocket science, the electronics in an active guitar/bass are pretty simple, it would be hard to mess it up.
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Old 22nd July 2013, 09:50 PM   #639
tinitus is offline tinitus  Europe
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a 300USD 5 string, with active curcuit...I dont think so

but it works really well wired passive
did a very quick test with both pickups wired in parallel into the same pot
just straight, with no tone pot

I would say it sounds very promising
but the jack plug is crap
the jack connector is too loose fit, and unsafe
definately have to be changed
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Old 23rd July 2013, 02:13 PM   #640
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Quote:
Originally Posted by tinitus View Post
a 300USD 5 string, with active curcuit...I dont think so
Active electronics are cheap and simple, no problem in a $300 bass.

Quote:

but it works really well wired passive
did a very quick test with both pickups wired in parallel into the same pot
just straight, with no tone pot

I would say it sounds very promising
but the jack plug is crap
the jack connector is too loose fit, and unsafe
definately have to be changed
Nothing 'unsafe' about it - no way it possibly could be.
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