SUNN Sonaro Head

[bessee]

I just got a SUNN Sonaro head with a 215 cabinet. In looking through all the archives I can find I only see reference to the Sonaro Combo Amps rather than the Sonaro stand alone head.

Does anybody have any idea;
1.) what the proper tube set was for this amp?
2.) where the serial number and inspection sticker may be?
3.) what vintage this head might be? I'm guessing 1969...???

[drlowlow]

check this out

http://www.dezirae.com/dezzie/sunn/sonaro.gif

schematic says 1967 so that is a rough guide.

tube line up is 12ax7, 7199, EL34, GZ34

I don't know much about Sunn, some manufactures changed designs alot between the years under the same name. It might be significant or not but at least this is a rough idea.
http://www.dezirae.com/dezzie/sunn/

There is also some other information and a chassis photo of the Sonaro. might want to compare what you have to that. sorry I couldn't give a more comprehensive answer. Good luck.

[azure]

Originally Posted by drlowlow

check this out

http://www.dezirae.com/dezzie/sunn/sonaro.gif

schematic says 1967 so that is a rough guide.

tube line up is 12ax7, 7199, EL34, GZ34

I don't know much about Sunn, some manufactures changed designs alot between the years under the same name. It might be significant or not but at least this is a rough idea.
http://www.dezirae.com/dezzie/sunn/

There is also some other information and a chassis photo of the Sonaro. might want to compare what you have to that. sorry I couldn't give a more comprehensive answer. Good luck.

Anyone have a mirror site for the url above? I wanted to try to find a schematic for my Sonaro with EL34's.
Thanks for any help or info,
Ben

[loudthud]

This schematic is pretty close. The Sonaro started as a 40W combo in 67 and 68. In 69 it was split as a head/speaker but still 40W. In 1970 it was upgraded to 60W, a pair of 6550's with a 6AN8A in place of the 7199. Sunn schematics frequently have mistakes and normal production dictates small changes. An example is the schematic shows the 16 and 8 ohm taps being used but your amp may use the 8 and 4 depending on what speaker it was sold with.

[azure]

Excellent,
Thank you very much for both the schematic and the words of wisdom.