Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => EZ Board postings => Topic started by: Geezer on June 17, 2005, 09:13:10 pm
-
Hoffman Amplifiers
> Tube Amp Building - Tweaks - Repairs
> grid stoppers?
<< Prev Topic | Next Topic >>
Author Comment
es347
Junior tube assistant
Posts: 12
(2/16/04 8:12 pm)
grid stoppers?
--------------------------------------------------------------------------------
On Hoffmans 5f6-a layout He has 1.5k resistors on pins 5 and 6 of the power tubes. Are these called Grid stoppers? What is there purpose? Should I put them on my Build? I used the original Fender schematic and Layout for mine and they don't have them on there. Thanks Mike.
GroundhogKen
Forum Moderator
Posts: 2272
(2/16/04 9:21 pm)
Re: grid stoppers?
--------------------------------------------------------------------------------
Yes, those are grid stoppers. They suppress high frequency oscillation and tame blocking disortion.
I recommend using them.
Fender used 1500 ohm, Marshall 5.6K, Hiwatt 22K.
If the value is too high you might notice some loss of high end.
Ken
<< Prev Topic | Next Topic >>
Topic Commands
Click to receive email notification of replies
jump to: Tube Amp Building - Tweaks - Repairs (New)New Product Suggestions (New)Praises - Complaints - Suggestions (New)Buy - Sell- Trade (New)Archives (New)
- Hoffman Amplifiers - Tube Amp Building - Tweaks - Repairs - Hoffman Amplifiers -
Powered By ezboard® Ver. 7.32
Copyright ©1999-2005 ezboard, Inc.