04-26-2016, 07:33 AM
Well, I got a bit carried away with the cleaning... the yellow stuff (nicotine?) takes a bit of getting rid of... and rust remover and a cotton bud is the easiest way I've found (phosphoric acid)... I went through about 100 cotton buds cleaning and derusting this... took a good few hours. So much for a quick turnaround resto...
[Image: http://i241.photobucket.com/albums/ff222...ycapcf.jpg]
But bench testing proved that its working nicely... and a seat-of-my-pants alignment showed it was well off... and its quite a good performer now.
[Image: http://i241.photobucket.com/albums/ff222...vd0szi.jpg]
So a quick clean of the knobs in the ultrasonic cleaner while screwing the speaker baffle back in with the new speaker attached and bolting the chassis down... then all back together and powered up for the first time in a few years I would imagine.
[Image: http://i241.photobucket.com/albums/ff222...chxx9p.jpg]
The speaker that was in it was very scratchy and distorted... I think it needs cleaned and the cone realigned. The speaker from the other one sounded pretty good considering it only had about 1/3 of its cone... so I might try making a new cone for that one at some point. Anyway, I have a spare 8" Rola speaker that fits perfectly for now so thats what it got.
[Image: http://i241.photobucket.com/albums/ff222...eimuvc.jpg]
I'm really stoked with it... It needs a few polishing details and it has an instability problem - there is a shield on the EF6 IF amp, and without it all you get is motorboating... and even with it sometimes it breaks. I may try another valve if I can find one... otherwise it is what it is. I also think its got the wrong rectifier in it - Its got an EZ2 and I suspect it should be an EZ3 as the EZ2 is an automotive tube and most circuits I found with a similar lineup use the EZ3... still, it works and the voltages are about right.
[Image: http://i241.photobucket.com/albums/ff222...ltiyy1.jpg]
Yes, I need to clean the valves - forgot to do it in my haste to get this 1-day project finished (in about 4 days... not bad!
)
And the dial looks great if you don't notice the bit of grill cloth fur hanging down in front of it
[Image: http://i241.photobucket.com/albums/ff222...7iyyfd.jpg]
[Image: http://i241.photobucket.com/albums/ff222...ycapcf.jpg]
But bench testing proved that its working nicely... and a seat-of-my-pants alignment showed it was well off... and its quite a good performer now.
[Image: http://i241.photobucket.com/albums/ff222...vd0szi.jpg]
So a quick clean of the knobs in the ultrasonic cleaner while screwing the speaker baffle back in with the new speaker attached and bolting the chassis down... then all back together and powered up for the first time in a few years I would imagine.
[Image: http://i241.photobucket.com/albums/ff222...chxx9p.jpg]
The speaker that was in it was very scratchy and distorted... I think it needs cleaned and the cone realigned. The speaker from the other one sounded pretty good considering it only had about 1/3 of its cone... so I might try making a new cone for that one at some point. Anyway, I have a spare 8" Rola speaker that fits perfectly for now so thats what it got.
[Image: http://i241.photobucket.com/albums/ff222...eimuvc.jpg]
I'm really stoked with it... It needs a few polishing details and it has an instability problem - there is a shield on the EF6 IF amp, and without it all you get is motorboating... and even with it sometimes it breaks. I may try another valve if I can find one... otherwise it is what it is. I also think its got the wrong rectifier in it - Its got an EZ2 and I suspect it should be an EZ3 as the EZ2 is an automotive tube and most circuits I found with a similar lineup use the EZ3... still, it works and the voltages are about right.
[Image: http://i241.photobucket.com/albums/ff222...ltiyy1.jpg]
Yes, I need to clean the valves - forgot to do it in my haste to get this 1-day project finished (in about 4 days... not bad!
)And the dial looks great if you don't notice the bit of grill cloth fur hanging down in front of it
[Image: http://i241.photobucket.com/albums/ff222...7iyyfd.jpg]
There are no personal problems that can't be overcome with the liberal application of high explosives
