Need help finding a schematic for a phono amp for a conversion for a friend

[jh45gun]

Got a friend who wants to convert a RCA Phono amp into a tube amp like I am with my Zenith. The chassis number is RS-171 and is a RCA the model number of the phono is SHP-7 The tube layout tag he took a pic of and sent to me and it has 2 6V6's and a 5Y3 Rectifier and 3 6CG7's. He said it has 3 transformers on it one large and two small? also the turntable had a switch that said mono or stereo yet the 2 12's and the two tweeters were all hooked together not separate like a stereo amp would be so that has me confused unless they had some simulated stereo function? Any one know where we can download a free copy of the schematic for this chassis? The amp does have all the volume tone controls so it is just not a power amp as it has the preamp section built in. Could the other tranformer be some sort of coupling transformer for a additional tuner that the tag said you could add on?

[Jaybird03]

http://www.samswebsite.com/photofact/pf_search.asp?MOD=rs171&TYPE=LIKE&Search=Search
Try this site. Good luck.

[jh45gun]

Hey Jaybird replyed to your other post at the Tele site. I am going to check the library today to see if they have any Sams on hand. I was aware of Sams just hopeing we could find a schematic on line like you found for my Zenith. WIll post back if I find one at the library or not. Jim.

[vibroverbus]

Got a friend who wants to convert a RCA Phono amp into a tube amp like I am with my Zenith. The chassis number is RS-171 and is a RCA the model number of the phono is SHP-7 The tube layout tag he took a pic of and sent to me and it has 2 6V6's and a 5Y3 Rectifier and 3 6CG7's. He said it has 3 transformers on it one large and two small? also the turntable had a switch that said mono or stereo yet the 2 12's and the two tweeters were all hooked together not separate like a stereo amp would be so that has me confused unless they had some simulated stereo function? Any one know where we can download a free copy of the schematic for this chassis? The amp does have all the volume tone controls so it is just not a power amp as it has the preamp section built in. Could the other tranformer be some sort of coupling transformer for a additional tuner that the tag said you could add on?

possibilities...

- 2 transformers are for stereo?
- 1 'transformer' is actually a choke?
- all speakers 'hooked together' to a common ground but really driven separately for stereo?

[jh45gun]

Yea if you look at the other post I posted it is a stereo amp and the two trannies are both output trannies. I should have posted that here that he found a schematic that is very close as his is a RC-171 and the Schematic is a 171A