Bottlehead Forum

Bottlehead Kits => Stereomour II => Topic started by: DPetrini on July 08, 2023, 09:29:46 PM

Title: Limitation on 2a3 tubes
Post by: DPetrini on July 08, 2023, 09:29:46 PM

Hi all, can the stereomour II use all types of 2a3 like RCA grey or black plates ?Just to be sure before try.thanxs

Title: Re: Limitation on 2a3 tubes
Post by: Paul Birkeland on July 09, 2023, 04:46:28 AM

Yes.

Title: Re: Limitation on 2a3 tubes
Post by: Tom-s on July 09, 2023, 06:55:36 AM

Should be mentioned that early 1935-1936 "monoplate" 2A3 can be used in Stereomour and I wouldn't recommend using them in a stock SII. I wanted I'd recommend dropping the B+ voltage/limit the cathode dissipation and use a slow heater start up for longevity (maybe with the DC heater upgrade from Bottlehead?).

Title: Re: Limitation on 2a3 tubes
Post by: DPetrini on July 09, 2023, 09:53:56 AM

Thanxs, which tubes i can use in stereomour II without modify It , that sounds Better than psvane 2a3c ?

Title: Re: Limitation on 2a3 tubes
Post by: Paul Birkeland on July 09, 2023, 10:25:22 AM

Try a pair of RCA bi-plates.