Author Topic: Can anyone give me a hand (e-hand, even) biasing a screamer? (Read 8186 times)

MDV · « **on:** April 12, 2007, 07:27:39 PM »

As per title.

I have valves
I have multimeter
I have good sense not to touch any contacts when the amps on
I know to leave it for some time to heat up to get the right voltage

and blah blah blah, I have biased one amp before: my TSl. But that was soooooooo easy: its just got a screw.

Looking in the back, I'm not even sure where the bias pot is on the screamer!

Help required please, in case I do something.....udoable!

MDV · « **Reply #1 on:** April 12, 2007, 07:34:36 PM »

I just found out the bias pot on a powerball is inside. I'm guessing from what Ive seen the screamers the same

Damnit.

MDV · « **Reply #2 on:** April 12, 2007, 08:10:05 PM »

OK, I'm going in, cover me!

MDV · « **Reply #3 on:** April 12, 2007, 10:18:01 PM »

Found the bias pot, but I dont know which conacts which!!

noodleplugerine · « **Reply #4 on:** April 12, 2007, 10:18:31 PM »

Sounds like fun :D

Mavet · « **Reply #5 on:** April 12, 2007, 10:28:32 PM »

Here are two guides for ENGL biasing + pics.
one is for a powerball ond one for the mighty savage.
I hope you'll find common grounds with them and the screamer

http://www.lordriffenstein.com/phpbb/nfphpbb/viewtopic.php?t=621
http://www.lordriffenstein.com//phpbb/nfphpbb/viewtopic.php?t=79

MDV · « **Reply #6 on:** April 12, 2007, 10:34:04 PM »

Mavet, you are a schollar and a gentleman. Thank you very much!

*puts helmet back on*

Aaaaaaaaaaaaaaaaaaaaaaand again!

Mavet · « **Reply #7 on:** April 12, 2007, 10:38:36 PM »

It just prooves that I spend to much time on the net and to little time playing (guitar :roll: ), glad I could help.

Mavet · « **Reply #8 on:** April 12, 2007, 10:41:05 PM »

*takes helmet off*

Kilby · « **Reply #9 on:** April 13, 2007, 04:14:56 PM »

Listens for screams !

dave_mc · « **Reply #10 on:** April 13, 2007, 09:26:59 PM »

major apologies in advance, it just came to me, and as you all know, I can't resist a cheap joke.

let it read the daily mail.

*rim-shot*

sorry. :oops:

hunter · « **Reply #11 on:** April 13, 2007, 11:14:02 PM »

I received this long time ago, when I had a screamer myself, might be useful schematics...
http://www.thegutbusters.com/temp/ENGLBIAS.pdf

BloodMountain · « **Reply #12 on:** April 13, 2007, 11:14:58 PM »

haha dave!

Muzzzz · « **Reply #13 on:** April 14, 2007, 10:23:34 AM »

I don't get it... :? :oops:

noodleplugerine · « **Reply #14 on:** April 14, 2007, 12:35:04 PM »

Quote from: dave_mc

let it read the daily mail.

You win the internet.