Comments on: Debugging the GA-5T : I never thought I would write this… http://www.paleoelectronics.com/blog/2008/02/debugging-the-ga-5t-i-never-thought-i-would-write-this/ Clueless Idiots and High Voltage Vacuum Tubes Really Do Mix! Thu, 01 Jul 2010 22:19:08 +0000 hourly 1 http://wordpress.org/?v=3.0 By: Dilapidus http://www.paleoelectronics.com/blog/2008/02/debugging-the-ga-5t-i-never-thought-i-would-write-this/comment-page-1/#comment-73 Dilapidus Sun, 19 Jul 2009 17:29:27 +0000 http://www.paleoelectronics.com/blog/?p=48#comment-73 Hey.. sorry I didn't get back to you quicker. Can you be more precise about what happens? The tremolo is 1/2 of V2 (from the back the second to right 6EU7) You could switch the two (V1 and V2) to see if that changes anything. Or better yet, if you have another tube, swap it in. If that doesn't help, you probably would have to start looking through the discretes in there. They have a great Trem when it works. Hey.. sorry I didn’t get back to you quicker. Can you be more precise about what happens?

The tremolo is 1/2 of V2 (from the back the second to right 6EU7) You could switch the two (V1 and V2) to see if that changes anything.

Or better yet, if you have another tube, swap it in. If that doesn’t help, you probably would have to start looking through the discretes in there.

They have a great Trem when it works.

]]> By: Patrick http://www.paleoelectronics.com/blog/2008/02/debugging-the-ga-5t-i-never-thought-i-would-write-this/comment-page-1/#comment-72 Patrick Tue, 14 Jul 2009 00:27:38 +0000 http://www.paleoelectronics.com/blog/?p=48#comment-72 I have a 63 ga 5t and she looks pretty good, not beat up at all. sounds great overall but the tremolo won't work. any idea what this would be? thanks I have a 63 ga 5t and she looks pretty good, not beat up at all. sounds great overall but the tremolo won’t work. any idea what this would be? thanks

]]> By: Dilapidus http://www.paleoelectronics.com/blog/2008/02/debugging-the-ga-5t-i-never-thought-i-would-write-this/comment-page-1/#comment-69 Dilapidus Wed, 11 Mar 2009 01:28:29 +0000 http://www.paleoelectronics.com/blog/?p=48#comment-69 I got the weber 10A125 which is AlNiCo. Clear, crisp and significantly louder and it fixed the lack of definition in the lows. It sounds very good. However, I preferred the old sound. It was smoother and creamier, if I may be so bold as to put it that way. I'll likely recone and old speaker, keep an old speaker as is and then taste test all three. I have some low volume noise that my mic is picking up so I'll be back in the damn thing soon enough. I got the weber 10A125 which is AlNiCo.

Clear, crisp and significantly louder and it fixed the lack of definition in the lows. It sounds very good.

However, I preferred the old sound. It was smoother and creamier, if I may be so bold as to put it that way.

I’ll likely recone and old speaker, keep an old speaker as is and then taste test all three.

I have some low volume noise that my mic is picking up so I’ll be back in the damn thing soon enough.

]]> By: Mark http://www.paleoelectronics.com/blog/2008/02/debugging-the-ga-5t-i-never-thought-i-would-write-this/comment-page-1/#comment-68 Mark Wed, 11 Mar 2009 00:44:51 +0000 http://www.paleoelectronics.com/blog/?p=48#comment-68 I have a simlar Skylark and I love the amp. I have had some noise issues and most of my issues were resolved by installing a grounded plug. The capacitors have been replaced with a couple of Nicholsons. Not sure if the Spragues would have made it quieter. I am trying to locate some Spragues. Still some static type noise above 6 but pretty quiet below that. Tubes have made a difference, the one tube I am shy is the 6EU7 and I have ordered a new one. I am curious about your opinions of the Weber 10" ceramic speaker. I have been thinking of swapping out the stock 10" with the Weber product. Mark I have a simlar Skylark and I love the amp. I have had some noise issues and most of my issues were resolved by installing a grounded plug. The capacitors have been replaced with a couple of Nicholsons. Not sure if the Spragues would have made it quieter. I am trying to locate some Spragues. Still some static type noise above 6 but pretty quiet below that. Tubes have made a difference, the one tube I am shy is the 6EU7 and I have ordered a new one. I am curious about your opinions of the Weber 10″ ceramic speaker. I have been thinking of swapping out the stock 10″ with the Weber product.

Mark

]]> By: Dilapidus http://www.paleoelectronics.com/blog/2008/02/debugging-the-ga-5t-i-never-thought-i-would-write-this/comment-page-1/#comment-71 Dilapidus Tue, 13 Jan 2009 18:52:04 +0000 http://www.paleoelectronics.com/blog/?p=48#comment-71 I did not make any circuit changes. I brought everything to spec. I'm about to try the Weber 10A125 myself. I will write it up when I do. The volume increase is no surprise, to be sure. What don't you like about the tone? I did not make any circuit changes. I brought everything to spec.

I’m about to try the Weber 10A125 myself. I will write it up when I do. The volume increase is no surprise, to be sure.

What don’t you like about the tone?

]]> By: Sunnydaze http://www.paleoelectronics.com/blog/2008/02/debugging-the-ga-5t-i-never-thought-i-would-write-this/comment-page-1/#comment-70 Sunnydaze Tue, 13 Jan 2009 07:00:20 +0000 http://www.paleoelectronics.com/blog/?p=48#comment-70 I recently got an Epiphone EA50 (same circuit as Gibson GA5 Crestline). I also got a 1970 Fender Bronco (Vibrochamp) about the same time. Have done a cap job in both and replaced some tubes, both sound pretty good. I put a Weber 10" alnico (10a100t) vintage series in the Epi and it really increased the volume. I actually like the tone a little better on the stock speaker, but it's not very loud and already starting to tear on the cone a little. The Weber gave this a more open sound and a bit more bottom. It's still really bright though. Can work around the brightness with tone control on a TS808. I guess I like the sound of the Epi better than the Fender, but in fairness I haven't tried the Fender with a decent 4ohm speaker. Question:As you know the EA50 has no tone controls - did you make any mods to the resistor or cap values on the volume control that tamed the treble or improved the tone? thanks I recently got an Epiphone EA50 (same circuit as Gibson GA5 Crestline). I also got a 1970 Fender Bronco (Vibrochamp) about the same time. Have done a cap job in both and replaced some tubes, both sound pretty good. I put a Weber 10″ alnico (10a100t) vintage series in the Epi and it really increased the volume. I actually like the tone a little better on the stock speaker, but it’s not very loud and already starting to tear on the cone a little. The Weber gave this a more open sound and a bit more bottom. It’s still really bright though. Can work around the brightness with tone control on a TS808. I guess I like the sound of the Epi better than the Fender, but in fairness I haven’t tried the Fender with a decent 4ohm speaker.

Question:As you know the EA50 has no tone controls – did you make any mods to the resistor or cap values on the volume control that tamed the treble or improved the tone?

thanks

]]> By: Epimacus http://www.paleoelectronics.com/blog/2008/02/debugging-the-ga-5t-i-never-thought-i-would-write-this/comment-page-1/#comment-67 Epimacus Sun, 24 Feb 2008 06:32:10 +0000 http://www.paleoelectronics.com/blog/?p=48#comment-67 I've put in an order for a Weber CVC10. I know it's not alnico, but i think it should do the job just fine. Don't want to sink too much money into this just yet :) I’ve put in an order for a Weber CVC10. I know it’s not alnico, but i think it should do the job just fine. Don’t want to sink too much money into this just yet :)

]]> By: Dilapidus http://www.paleoelectronics.com/blog/2008/02/debugging-the-ga-5t-i-never-thought-i-would-write-this/comment-page-1/#comment-66 Dilapidus Fri, 22 Feb 2008 03:18:59 +0000 http://www.paleoelectronics.com/blog/?p=48#comment-66 The EA-50T is a virtual clone of the Crestline Skylark GA-5T which is 8 ohm. The MSM doesn't show rating for the EA-50 (GA-5) but the power circuit is identical so you can be sure that 8 ohms is right. The EA-50T is a virtual clone of the Crestline Skylark GA-5T which is 8 ohm. The MSM doesn’t show rating for the EA-50 (GA-5) but the power circuit is identical so you can be sure that 8 ohms is right.

]]> By: Dilapidus http://www.paleoelectronics.com/blog/2008/02/debugging-the-ga-5t-i-never-thought-i-would-write-this/comment-page-1/#comment-65 Dilapidus Thu, 21 Feb 2008 23:44:00 +0000 http://www.paleoelectronics.com/blog/?p=48#comment-65 No but I'm looking forward to your results, as I think my speaker is blown on one of the skylarks. No but I’m looking forward to your results, as I think my speaker is blown on one of the skylarks.

]]> By: Epimacus http://www.paleoelectronics.com/blog/2008/02/debugging-the-ga-5t-i-never-thought-i-would-write-this/comment-page-1/#comment-64 Epimacus Thu, 21 Feb 2008 23:22:51 +0000 http://www.paleoelectronics.com/blog/?p=48#comment-64 I'm just becoming more familiar with Weber recently and intend on using one of their speakers in my Skylark Crestline. Any experience with the Chicago Vintage Series? Anyway, I have heard the stories about how responsive Weber is and it sounds like they run a fine operation- quality at a reasonable price with good service. I'm working with a professional that mostly services old radios for getting this Skylark up and running, as I am new to this and have a healthy fear of death by electrocution. I am a novice and he has been kind enough to take the time and show me a few things. Thanks for your info help and advise re: a second opinion- it is much appreciated. I'll let you know how things progress. I’m just becoming more familiar with Weber recently and intend on using one of their speakers in my Skylark Crestline. Any experience with the Chicago Vintage Series? Anyway, I have heard the stories about how responsive Weber is and it sounds like they run a fine operation- quality at a reasonable price with good service.

I’m working with a professional that mostly services old radios for getting this Skylark up and running, as I am new to this and have a healthy fear of death by electrocution. I am a novice and he has been kind enough to take the time and show me a few things.

Thanks for your info help and advise re: a second opinion- it is much appreciated. I’ll let you know how things progress.

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