Bottlehead Forum

Bottlehead Kits => Legacy Kit Products => Stereomour => Topic started by: balancedtriode on July 28, 2012, 01:38:30 AM

Title: Shunt reg. for Stereomour?
Post by: balancedtriode on July 28, 2012, 01:38:30 AM

I was reading topics on the old forum and came across one where PJ talked about a shunt reg mod for the stereomour, that he was hopping to get around to doing some day when the eros and stereomour were done and released. Is this still a future possibility or has it gone by the wayside? I am just very interested in making my stereomour the best it can be!
thanks
-coltrane

Title: Re: Shunt reg. for Stereomour?
Post by: Paul Joppa on July 29, 2012, 11:47:39 AM

Wow, I totally forgot that! The issue is there is no spare tube for a hybrid regulator. Might be possible to fit a couple gas tubes under the hood - I think that's what I was thinking. Either that or a compactron triple triode, which would require drilling out the center tube socket.

Title: Re: Shunt reg. for Stereomour?
Post by: grufti on July 29, 2012, 01:12:46 PM

Many Compactrons are nice and cheap.

Title: Re: Shunt reg. for Stereomour?
Post by: balancedtriode on July 29, 2012, 02:45:52 PM

to be honest I would love this as an upgrade and I bet there are many bottlehead's who would like that as an upgrade aswell, even if it requires a drilling a hole.

Title: Re: Shunt reg. for Stereomour?
Post by: Jim R. on July 30, 2012, 03:43:11 PM

So, taking this even one step further -- is there enough juice in that transformer for a fully shunt regulated 2a3 monoblock?

Sorry, had to ask :-).

-- Jim

Title: Re: Shunt reg. for Stereomour?
Post by: Paul Joppa on July 31, 2012, 10:14:55 AM

Quote from: Jim R. on July 30, 2012, 03:43:11 PM

So, taking this even one step further -- is there enough juice in that transformer for a fully shunt regulated 2a3 monoblock?

Sorry, had to ask :-).

-- Jim

Probably. The voltage would drop with the reg, so it would go back to the RCA operating pit (250v/60mA/2500 ohms)

I did work up a possible DC filament supply but haven't built one yet. Our recent experiments call BS on the "AC only" crowd...

Title: Re: Shunt reg. for Stereomour?
Post by: Jim R. on July 31, 2012, 10:54:43 AM

Sounds interesting on the DC filaments -- I've been an AC filament kind of guy but that is based just on what I've heard so far, but willing to keep an open mind.

-- Jim

Title: Re: Shunt reg. for Stereomour?
Post by: balancedtriode on October 31, 2012, 05:17:01 AM

hey Paul,
do you want a guinea pig for the DC filament  supply?  ;)
-Coltrane