[78-L] RCA dealers' phono?

[Robert M. Bratcher Jr.]

Slight correction here (& yes I'm way off topic for 78-L) the Heathkit tuners I 
had back then were a separate pair of AM only & FM only tuners. Oh & the old 
WA-1 Heathkit amps put out about 30 watts each. The preamps were a pair of 
WA-P2's & they had several curves including one for early 78's.




________________________________
From: Robert M. Bratcher Jr. <rbratcherjr at yahoo.com>
To: 78-L Mail List <78-l at klickitat.78online.com>
Sent: Thu, March 10, 2011 9:47:08 PM
Subject: Re: [78-L] RCA dealers' phono?

And the 6L6 family (such as the 6L6G, 6L6WGB & similer) make nice transmitting 
tubes in ham radio service. But then the 6V6 family will work too at lower power 

than what you get using a 6L6 tube. Good audio tubes yes but great transmitting 
tubes!! On the other hand I've used the 807 series (like the 5933/807W) for both 

a pair of Heathkit audio amplifiers years ago as well as one or two transmitting 

tube projects. I even built a morse code transmitter out of a pair of 50C5's 
once & it was fun to play with.

The Heathkit amps were from a garage sale & were missing the 807's although the 
other tubes werre there. A Heathkit stereo tube preamp was there as well as a 
mono Heathkit AM/FM tuner. Bought it all, took it home, added four 807W's from 
my junk box & that became my first compoment stereo system with the FM tuner 
section converted to stereo (by me) a couple months later. Not bad audio for a 
teenager in the early 1970's.....




________________________________
From: Steven C. Barr <stevenc at interlinks.net>
To: 78-L Mail List <78-l at klickitat.78online.com>
Sent: Thu, March 10, 2011 9:06:45 PM
Subject: Re: [78-L] RCA dealers' phono?

From: "Robert M. Bratcher Jr." <rbratcherjr at yahoo.com>
> Now that I think about it I'm pretty sure that your right about the 
> circuit.
> What do you think those 6K6's put out to the speaker? About 10 watts 
> perhaps? Or
> less like maybe 5 or 6 watts?
>
IIRC about 5 watts; there were a number of 6*6 "beam power" tubes.
The 6L6 was the most powerful; and there were a number of these
rated at 5 watts per P-P pair. Most common was the 6V6.

Steven C. Barr 

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