FDP Home Page / FDP Forum / FAQ's

The FDP is made possible by the following companies and individual members like you.
Please use the links below to show them we value their sponsorship.

Jensen Loudspeakers

Antique Electronics Supply

Guitar Center

Yellowjackets Tube Converters

Amazon

WD Music

Musician's Friend

Apex Tube Matching

MOD KITS DIY

Amplified Parts

Sweetwater


* God bless America and our men and women in uniform *

* Illegitimi non carborundum! *

If you benefit and learn from the FDP and enjoy our site, please help support us and become a Contributing Member or make a Donation today! The FDP counts on YOU to help keep the site going with an annual contribution. It's quick and easy with PayPal. Please do it TODAY!

Chris Greene, Host & Founder

LOST YOUR PASSWORD?

......................................................................

   
FDP Jam
Calendar
Find musicians
in your area!
  Search the Forums  

FDP Forum / Fender Amps: Vintage (before 1985) / Carbon Film Resistor?

roadhog96

USA / Sesame St.

May 2nd, 2017 02:32 PM   Edit   Profile   Print Topic   Search Topic

Would you use a Carbon Film Resistor for the 10M in a Blackface circuit?

I'm asking because I read this, consider using Carbon film resistors in non signal voltage divider circuits only.

(This message was last edited by roadhog96 at 08:03 PM, May 2nd, 2017)

Peegoo
Contributing Member
**********
**********
******

The spotlight

looks like a prison break
May 2nd, 2017 06:36 PM   Edit   Profile   Print Topic   Search Topic

I am no expert, but the way I understand the logic is that carbon film resistors are prone to shot noise--and that makes them not the best choice for use in a signal path.

amphead4

Cincinnati, USA

May 3rd, 2017 11:45 AM   Edit   Profile   Print Topic   Search Topic

I'm getting old.

Couldn't quite place where in the circuit I would find a 10M. So I looked at the AB763 schematic of a Super Reverb.

Still couldn't find a 10M.

So IMO, use whatever you have in stock and don't worry about.

Steve Dallman
Contributing Member
**********

Merrill, Wisconsin

Age is just a number...mine is big
May 3rd, 2017 12:13 PM   Edit   Profile   Print Topic   Search Topic

No 10M in a Fender that I know of. There are in some old Magnatones.

roadhog96

USA / Sesame St.

May 3rd, 2017 08:21 PM   Edit   Profile   Print Topic   Search Topic

Are you guys messing with me? My eyes aren't as good as they use to be but I can still read a schematic with the help of glasses and I'm seeing a 10M in the Tremelo Circuit on a AB763. Check out the link.

AB763 Tremelo Circuit 10M Resistor

(This message was last edited by roadhog96 at 09:57 AM, May 4th, 2017)

amphead4

Cincinnati, USA

May 4th, 2017 07:06 AM   Edit   Profile   Print Topic   Search Topic

Oh, that 10M resistor...

It's not in the signal path, use any resistor there. 1/2 watt carbon film, whatever.

I wouldn't bother changing it unless it was more than 20% out of tolerance.

Steve Dallman
Contributing Member
**********

Merrill, Wisconsin

Age is just a number...mine is big
May 4th, 2017 07:27 AM   Edit   Profile   Print Topic   Search Topic

Sorry, I retired from the bench over 10 years ago, and my memory has been damaged by a slow progressing dementia. I should have refreshed my memory by actually looking at a schematic.

roadhog96

USA / Sesame St.

May 4th, 2017 08:03 AM   Edit   Profile   Print Topic   Search Topic

Dementia is a common condition that comes with aging and it's frustrating as all heck not being able to remember things. It only happens to me when I can't remember something, the rest of the time I'm good I think, I can't remember. LOL

(This message was last edited by roadhog96 at 12:22 PM, May 4th, 2017)

FDP Forum / Fender Amps: Vintage (before 1985) / Carbon Film Resistor?




Reply to this Topic
Display my email address             Lost your password?
Your Message:
Link Address (URL):
Link Title:




Moderators: Chris Greene  Iron Man  reverendrob  

FDP, LLC Privacy Policy: Your real name, username, and email
are held in confidence and not disclosed to any third parties, sold, or
used for anything other than FDP Forum registration unless you specifically authorize disclosure.

Furtkamp.com 
Internet Application Development

Copyright © 1999-2017 Fender Discussion Page, LLC   All Rights Reserved