Recent Posts

51

Tube Amp Building - Tweaks - Repairs / Re: 5F1 built from scratch sound splurry when saturated

« Last post by dogburn on October 20, 2025, 02:10:47 pm »

Sounds like the speaker is buzzy. Have you tested another speaker with it?

52

Tube Amp Building - Tweaks - Repairs / Re: 6M5 6EM5 Valves in Push Pull

« Last post by Mike-p on October 20, 2025, 01:50:52 pm »

Angle grinder.

53

Tube Amp Building - Tweaks - Repairs / Re: 6M5 6EM5 Valves in Push Pull

« Last post by kagliostro on October 20, 2025, 12:33:19 pm »

Ciao scstill

https://stillampd.com/emery-champ-01

VERY VERY COOL 

Franco


p.s.: I like your advanced 3D approach to the project 

54

Tube Amp Building - Tweaks - Repairs / Re: 6M5 6EM5 Valves in Push Pull

« Last post by scstill on October 20, 2025, 11:46:11 am »

I once mounted the speaker on an angle in an early champ build.
Surprisingly the 6" speaker was too large to be mounted flush
I further justified the unusual mount thinking the speaker would be pointed more to the player if the amp was on the floor. Either way it sounds good with the "bigger" speaker.
https://stillampd.com/emery-champ-01

55

Tube Amp Building - Tweaks - Repairs / 5F1 built from scratch sound splurry when saturated

« Last post by FREYES_7 on October 20, 2025, 10:30:16 am »

Hello all

Built another 5F1 from scratch, sounds splurry when saturated,

For my first 5F1 I got this issue, but splurrier, solved it by tiding cables from preamp and OT

Even though my soldering is very lacking, I think the preamp socket cables are tidy, I did a thing with the OT and output jacks tho, which I suspect must be the issue.

Added 470ohm @1W screen resistors and 1.5k grid stopper to power tube 6V6, just in case,

Haven't tested again because I noticed the normal jack input was shorted and have to get a replacement, tempted to get rid of normal input,

Any insight will be appreciated

https://imgur.com/gallery/jxQl4vL

56

Introduce Yourself / roboDNA New Memeber

« Last post by EL34 on October 20, 2025, 06:29:46 am »

Welcome to the Hoffman Amps forum

There are many different boards on this forum for different topics.

The Tube Amp Building - Tweaks - Repairs board is where you can post amp questions.

That board is listed here.
https://el34world.com/Forum/index.php?board=13.0

Thanks,
Doug Hoffman

57

Introduce Yourself / roboDNA New Member

« Last post by roboDNA on October 20, 2025, 06:29:46 am »

Hello!

I'm into learning about analog synths and amps.  I'm a long-time coder who also likes to build synth modules and associated web/iOS apps.  I have recently built a Nelson Pass Class-A amp for my analog synths.  I currently spend most of time with STM32 uC, building a synth clock module and synth sequencer module. 

I'm here to learn about analog reverb units for a recent Fender 6G15 clone I have started.  ( need analog reverb effects for synths )

58

Introduce Yourself / Re: Thanks for your service!

« Last post by EL34 on October 20, 2025, 05:46:00 am »

Thanks 

59

Tube Amp Building - Tweaks - Repairs / Re: 6M5 6EM5 Valves in Push Pull

« Last post by TIMBO on October 20, 2025, 05:10:56 am »

Hey guys, I liked all of those suggestions.
So I going the make a new cab.
 

60

Tube Amp Building - Tweaks - Repairs / Re: 6M5 6EM5 Valves in Push Pull

« Last post by tubeswell on October 20, 2025, 04:22:30 am »

Be easier to shunt the speaker 1/2” sideways methinks. Won’t line up with the baffle hole that well but who will know?


(Otherwise make a new baffle)


Might need to cut a notch in that bottom baffle rail…