Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: kagliostro on November 13, 2016, 03:00:09 am

Title: 6SJ7 trem oscillator - search for lost schematic
Post by: kagliostro on November 13, 2016, 03:00:09 am

Yesterday I was surfing on the web and I've seen the schematic of an old guitar amp that used the 6SJ7 tube as oscillator for the tremolo

I was thinking I saved it for my archive, but I'm not able to find it ....  :BangHead:

Someone knows which is the amp that used the 6SJ7 in that position ?

Thanks

Franco

Title: Re: 6SJ7 trem oscillator - lost schematic search
Post by: tubeswell on November 13, 2016, 03:55:13 am

Seen it somewhere, but can't recollect where.


Never mind, Fig 2-8 (P23) of Ch2 of the Jack Darr book has a 6AU6 LFO circuit that you could easily adapt for a 6SJ7.

Title: 6SJ7 trem oscillator - search for lost schematic
Post by: kagliostro on November 13, 2016, 04:58:03 am

Ciao Tubeswell

Thanks for the file, it is interesting

I've some schematics that use 6AU6, but no one with the 6SJ7 and I was so silly that I badly saved it  :angry:

Franco

Title: Re: 6SJ7 trem oscillator - search for lost schematic
Post by: uki on November 13, 2016, 09:28:07 am

Hi Franco!

Have you tried to look in the history of your browser ? Usually browsers does that, there are exceptions, but the most common ones does save browsing history. If you have Firefox for example pressing crtl+h will bring the history up!

Title: Re: 6SJ7 trem oscillator - search for lost schematic
Post by: kagliostro on November 13, 2016, 09:57:59 am

Ciao Uki

I tried that but with no good results

----

I've find it, I had it under my eyes, it is the Silvertone 1333  :BangHead: :BangHead:

(http://i.imgur.com/ygam5to.jpg)

No Comment  :embarrassed:

Franco

Title: Re: 6SJ7 trem oscillator - search for lost schematic
Post by: uki on November 13, 2016, 10:37:37 am

This amp ?!   :icon_biggrin:

https://www.youtube.com/watch?v=feNdYMq6m88 (https://www.youtube.com/watch?v=feNdYMq6m88)

Title: Re: 6SJ7 trem oscillator - search for lost schematic
Post by: kagliostro on November 13, 2016, 10:45:52 am

Yes, that one


Franco