Pre-war amp, not sure of make

[thelonious_crunk]

Thank you. So what would be modern ones for the 12 film caps that are paper and 600v .01uf? Are they polystyrene?

So far in or on the cabinet and in amp chassis i have not located any badge or schematic. Will keep an eye out

[thelonious_crunk]

Could you post the tube lineup? I have Rider's PA manual and it's probably in there if you find any name on it.

5Z3 is one coke bottle no tint, the other coke bottle has no number and is black tinted. 6L6 is glass black tinted. Smaller metallic tubes are 6C5, 6SF5. No badge or schematic in there. Probably weathered away

[mozz]

Sometimes the sockets were imprinted with the tube number. Post the entire lineup. 6l6 looks to be metal, the tall tube. How many pins on the glass tube with no markings?

[vintagekiki]

https://worldradiohistory.com/Rider-Manual.htm
Rider's Perpetual Troubleshooter's Manual - 1930 to 1952 - Complete Collection

1)
http://prewaramps.org/

http://prewaramps.org/schematics.htm

2)
http://highgate.comm.sfu.ca/oldradio/index.html
Rider's Radio Service Manuals In PDF Format

[mozz]

If the 5z3 (like a 5u4)is original, i'm guessing the output tubes are a pair of 6l6. That is, if the tube with no numbers next to the rectifier is a octal. Someone swapped a metal 6l6 or a glass tube. Looking closer, the unknown tube is almost touching the speaker, so chances are it was a metal 6l6 also. Now, if the rectifier was metal, it would be a 5z4, which would be equivalent to a 5y3. So you really don't see 5y3's with push pull 6l6's, but yet there are a few in the PA book like that . I'm guessing they didn't put out all that many watts so current was under the 5y3 limit, which is 100-125ma. I'm sticking with 5z3, 6l6, 6l6, and pre amp tubes. Could be a Masco with that many inputs, also listed under Mark Simpson Co, (MASCO).

Here is "The book" for prewar PA amps, phonos and other things. You can get this on cd (which i also have) for $10 but i wanted the hard copy, not easy to find.

[Jazz P Bass]

Here is a preamp circuit that I found that uses the 6SF5 and a 6J5 .

[thelonious_crunk]

If the 5z3 (like a 5u4)is original, i'm guessing the output tubes are a pair of 6l6. That is, if the tube with no numbers next to the rectifier is a octal. Someone swapped a metal 6l6 or a glass tube. Looking closer, the unknown tube is almost touching the speaker, so chances are it was a metal 6l6 also. Now, if the rectifier was metal, it would be a 5z4, which would be equivalent to a 5y3. So you really don't see 5y3's with push pull 6l6's, but yet there are a few in the PA book like that . I'm guessing they didn't put out all that many watts so current was under the 5y3 limit, which is 100-125ma. I'm sticking with 5z3, 6l6, 6l6, and pre amp tubes. Could be a Masco with that many inputs, also listed under Mark Simpson Co, (MASCO).

Here is "The book" for prewar PA amps, phonos and other things. You can get this on cd (which i also have) for $10 but i wanted the hard copy, not easy to find.

The unknown has 7 pins and is Sylvania. It is tinted. I don't see anything written on the chassis like a Hammond amp would. Im gonna remove the rust to see if anything is imprinted now. I was thinking Masco but doesnt look quite exact. The sylvania is easily the new one as the rest are really old RCA and General Electric.

[vintagekiki]

May be

https://web.archive.org/web/20160825102154/http://theused.com/wp-content/uploads/resource/aca_mike_mixer.pdf

[mozz]

The tube has 7 pins or the socket has 7 pins?

[thelonious_crunk]

The tube has 7 pins or the socket has 7 pins?

The tube does. I think you are right it is also probably a 6l6. What exactly do you mean to post the tube lineup? Bird's eye shot? Or side pic?

[mozz]

Write the total number of tubes, and what each one is.

[thelonious_crunk]

Write the total number of tubes, and what each one is.

9 tubes total, one 5Z3 coke bottle no tint, one 6L6 is glass black tinted. Smaller metallic: one 6C5, five 6SF5. And then the 2nd coke bottle unknown believed to be 6L6

[mozz]

What's the tall metal tube? You are making this very drawn out and confusing.

[vintagekiki]

9 tubes total, one 5Z3 coke bottle no tint, one 6L6 is glass black tinted. Smaller metallic: one 6C5, five 6SF5. And then the 2nd coke bottle unknown believed to be 6L6

http://tdsl.duncanamps.com/show.php?des=6SF5

http://tdsl.duncanamps.com/show.php?des=6C5

http://tdsl.duncanamps.com/show.php?des=6L6

http://tdsl.duncanamps.com/show.php?des=5Z3

[Helmholtz]

What is written on the metal can tube?

If you only have one 6L6, it might be a single ended amp. Seems the OT is mounted to the speaker. See how many primary wires/terminals it has. Two means single ended, PP requires three. Secondary terminals connecting to speaker.