I was going to build an Ambassador - looks like a cool design.
Anyone know if it uses a Fender style 4K OT or a more of a Vox oversized OT . Looking at the 4 6V6's sharing a 150R Rk I'm not sure if it's in class A or not.
Plan was to use a 295-0-295 pt for an AC 30
Will using a Bassman 50w OT be the right choice to soak up the class A heat ?
Chopus Immoblius
Top Hat Ambassador What spec for OT?
Moderators: pompeiisneaks, Colossal
Top Hat Ambassador What spec for OT?
Heavens, an unused PI input !
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JamesHealey
- Posts: 477
- Joined: Thu Aug 28, 2008 5:34 pm
- Location: Leeds, UK
Re: Top Hat Ambassador What spec for OT?
I'd go with a vox over sized my self but that's just me
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Darkbluemurder
- Posts: 584
- Joined: Tue Jan 03, 2006 7:28 pm
Re: Top Hat Ambassador What spec for OT?
Fender used to run its 6V6 pairs with a 250R cathode resistor so 150R for a quartet would actually be cooler - provided the plate voltage was the same in both amps.
PT choice is fine with me. With an SS rectifier you should get 380-400VDC which is fine for 6V6s. Heater current would also be in spec.
Any OT with a 4k primary and a power handling capacity of 40W would be fine, e.g. both the Bassman iron and the oversized Vox iron would work well.
Actually I am considering a 4x6V6 build at the moment with a tranny set for an AC30 - PT has 290-0-290 and 275-0-275 HV windings, OT has a 3.8k primary and is suggested for 4 EL84 or 2 EL34 tubes.
Cheers Stephan
PT choice is fine with me. With an SS rectifier you should get 380-400VDC which is fine for 6V6s. Heater current would also be in spec.
Any OT with a 4k primary and a power handling capacity of 40W would be fine, e.g. both the Bassman iron and the oversized Vox iron would work well.
Actually I am considering a 4x6V6 build at the moment with a tranny set for an AC30 - PT has 290-0-290 and 275-0-275 HV windings, OT has a 3.8k primary and is suggested for 4 EL84 or 2 EL34 tubes.
Cheers Stephan