Hi everyone,
I'm very happy to have found this thread.
I recently bought($125) a no-name Canadian made tube amp.
I'm trying to find its brand name and the year it was made. It's in pretty good shape, no rust on the chassis, the speaker cone is in very good shape and it sound pretty good with a little bit of hum.
I think it was probably made in the 60's or 70's. If anyone has some ideas on brand or year,please let me know!!!
After bringing it home I opened it and found out that it was a a line-operated transformerless amp. (Arrrgh)
The tube lineup consists of 1 rectifier tube(35W4), 1 preamplifier tube(12AX7) and 1 power output tube(50C5).
The OT is located on the chassis.
It has an ON/Off switch knob combined with a volume control, a bass/treble tone control and 3 instrument jacks.
There is also a 2 amp fuse holder and an indicator light(probably neon).
For obvious electrical safety reasons(thanks to this thread) I will also as per chrisb install an isolation transformer(Triad N-68X).
I will also:
- measure all resistors and replace them if they are out of tolerance.
- replace some capacitors but I need your help for identifying which ones.
I will definitely replace all electrolytics(e.g: # 4 and 6 on the photo)
Can you please tell me what types of capacitors are # 1, 2, 3, and 5 on the photo?
Do I need to replace them?
Thanks!
Tube amp TOP_FRONT_VIEW
Tube amp TOP_BACK_VIEW
Tube amp BOTTOM_BACK_INSIDE_VIEW
Tube amp ELECTRONICS_VIEW