badansdill
Junior Member
- Joined
- Jun 1, 2009
- Messages
- 13
- Reaction score
- 0
Hey gearheads, newb here. I just got a 1959 or 1960
66-J amp, appears to be 100% original. Missing leather
handle and jewel cover/retainer nut.
I am fixing it up, any comments or suggestions appreciated.
Tremolo only works on last third of knob travel, on both speed
and strength controls. It is deep and thick, but hard to adjust
for slow and mild trem. incredible rich sound, sweet & vibey.
I replaced the strength knob (500K) but no help.
The amp hummed bad, I replace all the electrolytic filter caps
and several 25uf caps within the circuit. I put (2) 32uf caps
and (2) 20uf sprague atoms in there, that reduced some of the
hum; later I went back and replaced the first 32uf with a 40uf
sprague. That reduced the hum even more, but still a bit more hum
than I would like. replaced the 2 conductor with a
grounded 3 condutor power cable, and removed death cap.
I would like to lower the hum more if possible, it is tolerable but...
Tubes were original near as I can tell, the 6v6's tested good,
amazing for 50 year old tubes. replaced the preamp tubes with
raytheon usa 12AX7's, no noise or microphonics. The 5y3 recto
tube tested kind of flakey, replaced it. I tried some groove tubes
in their, 6v6's, but the original RCA's sounded way better.
Nice amp, sweet sounding for jazz. No distortion until the amp
is dimed, suits me. I play in a jazz combo and church band and
this looks like it will work great for both. All guitars I have tried
thru it sound really nice.
here is a gut shot
http://s240.photobucket.com/albums/ff13 ... CF0005.jpg
I will take some more pics and post if anyone wants to see them.
Pretty clean little amp, I dig the tone.
peace,
chris dansdill
66-J amp, appears to be 100% original. Missing leather
handle and jewel cover/retainer nut.
I am fixing it up, any comments or suggestions appreciated.
Tremolo only works on last third of knob travel, on both speed
and strength controls. It is deep and thick, but hard to adjust
for slow and mild trem. incredible rich sound, sweet & vibey.
I replaced the strength knob (500K) but no help.
The amp hummed bad, I replace all the electrolytic filter caps
and several 25uf caps within the circuit. I put (2) 32uf caps
and (2) 20uf sprague atoms in there, that reduced some of the
hum; later I went back and replaced the first 32uf with a 40uf
sprague. That reduced the hum even more, but still a bit more hum
than I would like. replaced the 2 conductor with a
grounded 3 condutor power cable, and removed death cap.
I would like to lower the hum more if possible, it is tolerable but...
Tubes were original near as I can tell, the 6v6's tested good,
amazing for 50 year old tubes. replaced the preamp tubes with
raytheon usa 12AX7's, no noise or microphonics. The 5y3 recto
tube tested kind of flakey, replaced it. I tried some groove tubes
in their, 6v6's, but the original RCA's sounded way better.
Nice amp, sweet sounding for jazz. No distortion until the amp
is dimed, suits me. I play in a jazz combo and church band and
this looks like it will work great for both. All guitars I have tried
thru it sound really nice.
here is a gut shot
http://s240.photobucket.com/albums/ff13 ... CF0005.jpg
I will take some more pics and post if anyone wants to see them.
Pretty clean little amp, I dig the tone.
peace,
chris dansdill