[78-L] RCA dealers' phono?

[Robert M. Bratcher Jr.]

Well the 5Y3-GT was the rectifier. I don't know what they used the 6J5 for 
(anybody know?) & either the 6K6-GT's or the 6SQ7's were the final amplifier 
tubes in push pull I'm fairly sure. What the other pair of tubes (either 6K6-GT 
or 6SQ7) were for I have no idea without looking at the schematic for this amp. 
If anybody knows more about this amp & how it works please let us know......




________________________________
From: DanKj <MLK402 at verizon.net>
To: 78-L Mail List <78-l at klickitat.78online.com>
Sent: Wed, March 9, 2011 7:37:00 PM
Subject: [78-L] RCA dealers' phono?

The logo on the speaker grille (burlap?) and ad wording on the cabinet's edge 
make this a store demo model, yes?

http://tinyurl.com/48b995u


I'm wondering: Was it just for playing records, or did it represent an actual 
model for sale?  And was a 6-tube amp normal 

for a crystal pickup, or were they just to drive the 12inch speaker & impress 
the customers ?