Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: silat on January 05, 2017, 02:43:28 pm

Title: Has anyone had any expereince with the Supro 1624 10 watt transformers?
Post by: silat on January 05, 2017, 02:43:28 pm

It would seem like I could get some loudness from this amp I just built, but I have to put the speaker up to my ear to hear it on the first channel and static out of the other channel. I will try to get pics and more information on voltages today later or Friday.

Title: Re: Has anyone had any expereince with the Supro 1624 10 watt transformers?
Post by: silat on January 05, 2017, 02:45:42 pm

I forgot to mention they are Classictone 40-18062 PT and 40-18063 OT

Title: Re: Has anyone had any expereince with the Supro 1624 10 watt transformers?
Post by: PRR on January 05, 2017, 03:14:34 pm

Many-many reasons an amplifier won't work right. Why are you thinking transformer?

Title: Re: Has anyone had any expereince with the Supro 1624 10 watt transformers?
Post by: silat on January 05, 2017, 04:20:23 pm

Well I called Watts who carry's the layout and schematic and sells  the entire  kit and they said  there were problems. But it may have been just to try and get me to buy their bigger transformers.  Anyhow here soon I will put some pictures. May have  some resister values wrong. Thanks for answering PRR.

Title: Re: Has anyone had any expereince with the Supro 1624 10 watt transformers?
Post by: silat on January 05, 2017, 04:48:35 pm

Here are some pics.

Title: Re: Has anyone had any expereince with the Supro 1624 10 watt transformers?
Post by: silat on January 05, 2017, 04:50:42 pm

Some more...

Title: Re: Has anyone had any expereince with the Supro 1624 10 watt transformers?
Post by: kagliostro on January 06, 2017, 04:35:28 am

Is this the schematic you used ?

(http://www.dougcircuits.com/supro1624T.png)

Did you used the expensive 6973 as power tubes ?

Franco

Title: Re: Has anyone had any expereince with the Supro 1624 10 watt transformers?
Post by: silat on January 06, 2017, 09:42:48 am

Yes Franco, I did use those as power tubes. Is there a problem with them? Is there an alternative if so and I can use the same transformers?

Title: Re: Has anyone had any expereince with the Supro 1624 10 watt transformers?
Post by: kagliostro on January 06, 2017, 01:07:34 pm

I was asking because who is able to help you is eased on doing it knowing the exact schematic you used

That because I've seen a 6v6 version here

https://www.thegearpage.net/board/index.php?threads/amp-build-thread-supro-1624t-type.1758490/ (https://www.thegearpage.net/board/index.php?threads/amp-build-thread-supro-1624t-type.1758490/)

(http://i270.photobucket.com/albums/jj91/Mattbedrock/Supro%201624t/null_zpsotuxd146.jpg)

Franco

Title: Re: Has anyone had any expereince with the Supro 1624 10 watt transformers?
Post by: silat on January 06, 2017, 02:24:41 pm

  Thank you for that. That is interesting... I will compare the two and see if I can make out what the differences are besides the obvious 6V6's in place of the 6973's....

Title: Re: Has anyone had any expereince with the Supro 1624 10 watt transformers?
Post by: silat on January 07, 2017, 07:57:18 pm

I have it playing strong and loud now on the first channel. It was a grounding issue. :BangHead: The other channel I am going to work with and make it a little cleaner and stronger.