Weber tremolux chassis questions

[dragonbat13]

I've been eyeing this chassis awhile

https://www.tedweber.com/5e7tch/

I am wondering about the transformer situation.

Does anybody know if this 5E9 chassis will accept 5E9 iron? Am I stuck with 5E7 iron?

Weber doesn't really indicate if the chassis would have to have cutouts modified, if they are 5E9, or if there are no cutouts at all? Personally I would prefer nothing at all vs the wrong transformer cutouts. I've never used a Weber chassis before.

EDIT: have since found that they are simply 5E7 Bandmaster chassis with Tremolux silkscreen. Bandmaster iron cutouts as stated below by colossal.

Anyone built on this particular chassis?

Are there any other 5E9 chassis out there?

[sluckey]

The 5E7 is a 6L6 amp and the 5E9 is a 6V6 amp. I would expect the 5E7 power transformer to be larger. The Hammond replacement transformers agree. The 5E9 uses a 290BX with a bolt pattern of 2.25" x 2.831". The larger 5E7 uses the 290D2X with a bolt pattern of 2.75" x 3.438".

https://www.hammfg.com/files/parts/pdf/ ... 1697661948

https://www.hammfg.com/files/parts/pdf/ ... 1697661948

Contact Weber. They can tell you what the PT bolt pattern dimensions are.

[Colossal]

DB,

I have this exact chassis, waiting in the wings for a Tremolux-type build. I say "Tremolux-type" because the circuit will be similar but with a few mods. Indeed the PT chassis cutout for the Weber chassis is for Bandmaster iron, so be advised. I selected a lower B+ Bandmaster PT, so the (tube) rectified voltage should be close to the 5G9A specified voltages. I opted for an oversized Deluxe Reverb A-frame OT (6k3 primary) so I can run 6L6GC, 5881, or 6V6 in cathode bias.

Hope that helps.

[dragonbat13]

Thanks for the clarification.

Colossal, who's PT did you decide to use. I like your ideas on that setup.

In all honesty, I kinda want to get a bit more power out of the amp anyway.

I think a pair of 5881's would be nice. Always liked that tube.

[Colossal]

Thanks for the clarification.

Colossal, who's PT did you decide to use. I like your ideas on that setup.

In all honesty, I kinda want to get a bit more power out of the amp anyway.

I think a pair of 5881's would be nice. Always liked that tube.

I used a set of Mercury transformers.

[dragonbat13]

Finally got mine.

They have some blems on sale too. For around half price. I bought a non blem.

Really nice piece. Definitely worth the 100 dollars.