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Author Topic: Volume drop when turning the tone pot?  (Read 2963 times)

add4

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Volume drop when turning the tone pot?
« on: February 17, 2011, 09:34:09 AM »
Hello to everyone,
I am new to the changing pickups thing, and i just recieved my first BK pickup yesterday, a beautiful manhattan P90. 
So far, i just installed the pickup and didn't touched to the tone pot and everything works fine, but i experience a volume bleed then i turn down the tone (this problem was there before the pickup change, but i thought i could be able to sort it out when changing the pickup if is was something obvious like a bad soldering joint or something like that, but it turns out i could not sort it out).
I thought that it could be caused by
- the cap value.
- the wiring scheme.. i noticed that the wiring of my guitar doesn't follow tim's scheme: the tone cap is between the right lug of the tone pot, and grounded directly, instead of being between the volume and tone pot.
- bad sodler joint. but i think that's not it since the tone control works, i just have to turn the volume up when the tone is on 0 to keep the same volume.
I have read that a bad cap value could cause that on the warmoth forum, but i was not able to identify my cap value with what's written onto it, i thought maybe someone could help so i took a pic. The pic shows you the stock  cap that i have currently in my guitar.

Any help or idea to fix that volume drop is appreciated :)
Best
Arnaud

p.s. As far as the pickup goes, i soldered it this morning before going to work and only played 10 mins before leaving, but it seems extremely balanced and sounds great. In fact, with my old pups (gibson classic 57) i had a parametric EQ always on to add highs and medium highs, and i have the same kind of sound now, without the EQ, only with better dynamics and subtelty. and i have not played with the pickup height yet..
Current: Emerald (n), The boss (b)
Had: Manhattan (n)
Wish list: VHII (n), Blackguard 50 (n)

add4

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Re: Volume drop when turning the tone pot?
« Reply #1 on: February 17, 2011, 07:07:55 PM »
Ok i found the problem :)
When i took my guitar this evening, it started to hum and scratch so mucjh that i put all the electronics out and re did everything. Turns out the tone pot was not grounded anymore, the solder joint had broken. I resoldered it and the tone pot acts normally.
I still don't know what that cap value is though.
Best
Current: Emerald (n), The boss (b)
Had: Manhattan (n)
Wish list: VHII (n), Blackguard 50 (n)

WezV

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Re: Volume drop when turning the tone pot?
« Reply #2 on: February 17, 2011, 07:18:59 PM »
.033 uf

Fourth Feline

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Re: Volume drop when turning the tone pot?
« Reply #3 on: February 22, 2011, 10:01:16 PM »


  I just recieved my first BK pickup yesterday, a beautiful Manhattan P90.  I soldered it this morning before going to work and only played 10 mins before leaving, but it seems extremely balanced and sounds great. In fact, with my old pups (gibson classic 57) i had a parametric EQ always on to add highs and medium highs, and i have the same kind of sound now, without the EQ, only with better dynamics and subtelty. and i have not played with the pickup height yet..

Best,

Arnaud


Sorry to have missed this earlier Arnaud,  :)

I'm delighted you share my affection for the Manhattan !

You can see why they sound lovely through relatively flat E.Q'd / response Jazz and / or acoustic amps. I only have to change a touch of E.Q on the Henriksen or  AAD Cub 100 for the room - because ( as you observed ) the Manhattans feed in very balanced , and are surprisingly rich sounding for something so clear and detailed .

 I have my P.U. heights set at 2mm at both high and low 'E' at the neck and bridge.  Tim at B.K.P seems to recommend about 2-2.5mm between top of pole piece and fretted string as a starting point - and I know a few luminaries on here like that general starting point too.  As these are very responsive pickups, you can even hear a favourite 'sweet spot' tune in within even half a turn of the pickup screws. Take your time to enjoy the set up - after all, that's the quality you paid for .

Enjoy !  :D
« Last Edit: February 22, 2011, 10:07:07 PM by Fourth Feline »