Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: Bieworm on July 11, 2023, 03:21:54 am

Title: Sluckey's SVK anyone?
Post by: Bieworm on July 11, 2023, 03:21:54 am

Hi there

A while ago Sluckey has posted the docs for a small vibro king amp. There were some responses and I think people were building it? How did that turn out eventually? Good sound? Noise level of the reverb in front of the rest of the circuit?

thanks!

Title: Re: Sluckey's SVK anyone?
Post by: sluckey on July 11, 2023, 05:36:31 am

Silvergun was building it but then got busy with life. No updates since May.

     https://el34world.com/Forum/index.php?topic=29802.msg333934#msg333934

Title: Re: Sluckey's SVK anyone?
Post by: Bieworm on July 19, 2023, 03:58:35 am

Steve, I have a Hammond 125B OT in my stash. You reckon it’s ok to use that as reverb transformer in the SVK? It’s a PushPull though, but maybe with half the primary winding or even full without CT?

Title: Re: Sluckey's SVK anyone?
Post by: sluckey on July 19, 2023, 08:26:00 am

I would not use that for the reverb OT.

Title: Re: Sluckey's SVK anyone?
Post by: pullshocks on July 19, 2023, 10:53:05 am

I don't think I would. 
Some time ago Hammond began offering the 125 series in SE- specific models.  Before that, the regular 125 series were sometimes used for SE wiring, by selecting appropriate taps.  I used a 125E in a 6V6 SE amp and it worked.  I later got one of the Doberman/Heyboer SE transformers and it was way better.
Don't know if hammond still publishes SE connection data for the regular 125 series.
So I would say it can, but wouldn't be the best option.

Title: Re: Sluckey's SVK anyone?
Post by: sluckey on July 19, 2023, 10:58:28 am

I would just use a Fender Champ OT.

Title: Re: Sluckey's SVK anyone?
Post by: Bieworm on July 19, 2023, 11:45:24 am

Quote from: sluckey on July 19, 2023, 08:26:00 am

I would not use that for the reverb OT.

Thanks.. just wondering. I bought it as a spare for a low watt JTM build a few years ago
There is also a dedicated OT for the reverb part of the vibro king available. But the champ thing will serve the same purpose I guess. The price on both is very similar
https://www.tube-town.net/ttstore/hammond-1750b-fuer-fender-reverb-024038.html
https://www.tube-town.net/ttstore/hammond-1750c-uebertrager-125a35a-022905-fuer-fender-champ.html

Title: Re: Sluckey's SVK anyone?
Post by: sluckey on July 19, 2023, 12:55:56 pm

Quote from: Bieworm on July 19, 2023, 11:45:24 am

There is also a dedicated OT for the reverb part of the vibro king available.

Then that's the one I would buy.