ebassist dot com  ebassist dot com...
 
 

Go Back   ebassist dot com > stuff... > the best of ebassist...

Reply
 
Thread Tools
Old 06-21-2011, 07:15 PM   #1
jonjohn
I'm back
 
jonjohn's Avatar
 
Join Date: Mar 2009
Location: ɹǝpun uʍop
Posts: 14,332
Bass wiring questions

I am going to shield a (Passive) PJ bass I have. And put in new pots and have just a switch for the tone


The P pick up is louder then the J, so I was wondering if there is any way to bring the volume of the P down slightly.
Would a 250k pot on the P and 500k on the J do the trick?

And is there anything to look out for when shielding? I will be using tape not paint
I am guessing you just install the tape then ground everything to one spot. do you put electrical tape where the pots and jack go so they don't create a ground loop?
jonjohn is offline   Reply With Quote
Old 06-21-2011, 07:31 PM   #2
bassmanatlarge
the cunning linguist
 
bassmanatlarge's Avatar
 
Join Date: Jul 2006
Posts: 1,678
try moving it further down away from the strings

I cut a little shielding away so the pots don't touch it and ground it to the jack
__________________
never, never question the old hippie.-mlw

TACT Is for creatures not clever enough to be sarcastic.

Life is NOT a journey to the grave with intentions of arriving safely in a well-preserved body... BUT, rather to skid in broadside, thoroughly used up, totally worn out and loudly proclaiming.....WOW!!! What a Ride !!!
bassmanatlarge is offline   Reply With Quote
Old 06-21-2011, 07:40 PM   #3
jonjohn
I'm back
 
jonjohn's Avatar
 
Join Date: Mar 2009
Location: ɹǝpun uʍop
Posts: 14,332
Quote:
bassmanatlarge said... View Post
try moving it further down away from the strings

I cut a little shielding away so the pots don't touch it and ground it to the jack
I have lowered the P pup, I should have said in my first post .It is still to loud. Would different value pots make a difference in vol?

Cutting a bit out. great idea
jonjohn is offline   Reply With Quote
Old 06-21-2011, 09:29 PM   #4
mlwarriner
Cyclo-Masochist
 
mlwarriner's Avatar
 
Join Date: Jul 2006
Posts: 26,140
Quote:
jonjohn said... View Post
Would different value pots make a difference in vol?
i don't think so, no. i think the pot value just helps determine the amount of highs that get through, not the overall amount of volume.

but i could very well be wrong (and probably am).
mlwarriner is offline   Reply With Quote
Old 06-22-2011, 01:56 AM   #5
GUTTERMOUTH
The yeast better rise...
 
GUTTERMOUTH's Avatar
 
Join Date: Apr 2008
Location: Halfway between crazy and dead.
Posts: 3,824
Quote:
jonjohn said... View Post


The P pick up is louder then the J, so I was wondering if there is any way to bring the volume of the P down slightly.
Would a 250k pot on the P and 500k on the J do the trick?
You can experiment with different pot values but chances are you'll have to resort to a series resistor or bleeding some of the signal off to ground with a resistor as well as experimenting with the height of the p pickup to get it right.

Quote:
jonjohn said... View Post

I am guessing you just install the tape then ground everything to one spot. do you put electrical tape where the pots and jack go so they don't create a ground loop?
It just my opinion but i would tie the grounds in at the sleeve of the jack with a single jumper from your tape. Your pots won't ground through their casings so as long as you have a single ground connection for each pot and no stray shielding tape - you shouldn't have to worry about ground loops.
__________________
Resistance may be futile but capacitance has potential
GUTTERMOUTH is offline   Reply With Quote
Old 06-22-2011, 02:31 AM   #6
jonjohn
I'm back
 
jonjohn's Avatar
 
Join Date: Mar 2009
Location: ɹǝpun uʍop
Posts: 14,332
Okay, great. Thanks for that
jonjohn is offline   Reply With Quote
Old 06-22-2011, 02:51 AM   #7
jonjohn
I'm back
 
jonjohn's Avatar
 
Join Date: Mar 2009
Location: ɹǝpun uʍop
Posts: 14,332
I have just been bread boarding different caps. And there a 3 separate caps I want now..
Grrr
jonjohn is offline   Reply With Quote
Old 06-22-2011, 03:38 AM   #8
GUTTERMOUTH
The yeast better rise...
 
GUTTERMOUTH's Avatar
 
Join Date: Apr 2008
Location: Halfway between crazy and dead.
Posts: 3,824
Quote:
jonjohn said... View Post
I have just been bread boarding different caps. And there a 3 separate caps I want now..
Grrr
three way switch man.3 way switch...
GUTTERMOUTH is offline   Reply With Quote
Old 06-22-2011, 03:51 AM   #9
jonjohn
I'm back
 
jonjohn's Avatar
 
Join Date: Mar 2009
Location: ɹǝpun uʍop
Posts: 14,332
Quote:
GUTTERMOUTH said... View Post
three way switch man.3 way switch...
Is that like an on on on switch? I can't work out how I would wire that up, with a clean setting
jonjohn is offline   Reply With Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 08:20 PM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.