Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: FREYES_7 on October 20, 2025, 10:30:16 am

Title: 5F1 built from scratch sound splurry when saturated
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

Title: Re: 5F1 built from scratch sound splurry when saturated
Post by: dogburn on October 20, 2025, 02:10:47 pm

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

Title: Re: 5F1 built from scratch sound splurry when saturated
Post by: FREYES_7 on October 20, 2025, 06:36:00 pm

Quote from: dogburn on October 20, 2025, 02:10:47 pm

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

Thanks, will check!