Any interest in seeing some Dumble Tweed Deluxe photos?

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Charlie Wilson
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Re: Any interest in seeing some Dumble Tweed Deluxe photos?

Post by Charlie Wilson »

Hello, it doesn't look like the pots have a ground. They should share a ground with the 33uf preamp filter and the PI cathode bypass cap.
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mhartman
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Re: Any interest in seeing some Dumble Tweed Deluxe photos?

Post by mhartman »

Charlie Wilson wrote:Hello, it doesn't look like the pots have a ground. They should share a ground with the 33uf preamp filter and the PI cathode bypass cap.
Good catch Charlie! I'll update according.
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talbany
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Re: Any interest in seeing some Dumble Tweed Deluxe photos?

Post by talbany »

Personally I would ground the Plate and Screen PS caps further upstream from the preamp..The ideal spot would be at the transformer bolts..I don't care how Dumble did it.

Tony
Last edited by talbany on Fri Jun 20, 2014 1:36 am, edited 3 times in total.
" The psychics on my bench is the same as Dumble'"
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ToneMerc
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Re: Any interest in seeing some Dumble Tweed Deluxe photos?

Post by ToneMerc »

talbany wrote:Personally I would ground the Plate and Screen PS caps further upstream from the preamp..An ideal spot would be at the transformer bolts.. I don't really care how Dumble did it..

Tony
I agree, I set my board up with segregated grounds.

TM
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jelle
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Re: Any interest in seeing some Dumble Tweed Deluxe photos?

Post by jelle »

I separated grounds in this one too. Made quite a difference. Sounds great and is very quiet. :-)
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Colossal
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Re: Any interest in seeing some Dumble Tweed Deluxe photos?

Post by Colossal »

jelle wrote:I separated grounds in this one too. Made quite a difference. Sounds great and is very quiet. :-)
Very nice! What PT/voltages did you use Jelle?
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jelle
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Re: Any interest in seeing some Dumble Tweed Deluxe photos?

Post by jelle »

The one in the pic has a Weber chassis and PT. From memory, I believe 380v.
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Colossal
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Re: Any interest in seeing some Dumble Tweed Deluxe photos?

Post by Colossal »

jelle wrote:The one in the pic has a Weber chassis and PT. From memory, I believe 380v.
Nice. You running a 5Y3GT so far? I have a 5E3 build in progress with a 380VAC PT as well that started as a modded circuit, but now I'm thinking about building out into a Tweedle D. I haven't built the board yet so the door is still open.
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jelle
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Re: Any interest in seeing some Dumble Tweed Deluxe photos?

Post by jelle »

Thanks for the nice comments! Yes, that is the rectifier I used.

Also, the one I posted is another Tweed Deluxe mod, not the Tweedly-D.
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Colossal
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Re: Any interest in seeing some Dumble Tweed Deluxe photos?

Post by Colossal »

jelle wrote:Thanks for the nice comments! Yes, that is the rectifier I used.

Also, the one I posted is another Tweed Deluxe mod, not the Tweedly-D.
Yeah, I figured it was different as the PI and a few other things look different. Great looking amp though, very clean (as usual) 8)
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M Fowler
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Re: Any interest in seeing some Dumble Tweed Deluxe photos?

Post by M Fowler »

Thanks to Charlie and all the guys for the information.

Got my board built and populated. chassis components mounted. Had a Classictone OT but no PT so will get that ordered.

Need to get a 10k trimmer too.

Mark
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rogb
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Re: Any interest in seeing some Dumble Tweed Deluxe photos?

Post by rogb »

ToneMerc wrote:
rogb wrote:Board layout from TM and Charlie's work - 2nd draft so please check
V1 cathode caps should have the ground node in the center of both caps with the cathode leads exiting north and south,

TM
Thanks - now corrected
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mhartman
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Re: Any interest in seeing some Dumble Tweed Deluxe photos?

Post by mhartman »

Layout updated/cleaned up. Posted on page 9
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M Fowler
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Re: Any interest in seeing some Dumble Tweed Deluxe photos?

Post by M Fowler »

Nice looking layout.

Is this layout showing a brass plate for grounding?

I'm not going that route so my grounding will be different.
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cbass
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Re: Any interest in seeing some Dumble Tweed Deluxe photos?

Post by cbass »

I gots some trannies guess I need too bend up a tweed chassis.I wanna be cool like you guys :)
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