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Post by jlowder23 on Mar 22, 2015 8:10:07 GMT -7
The M12 has been my go to amp for quite sometime. We played a gig lastnight and did sound check earlier in the day. During sound check, the M12 sounded normal with nice big cleans and singing overdrive tones when my pedals were engaged. I noticed during the 1st set, a lot of my low end was gone and anytime I tried to use an overdrive, it sounded very crunchy and harsh. On the 1st break, I changed the ef86. That didn't help. The next break I changed the 12ax7 and power tubes. Still no change. The only tube I didn't change was the rec tube. Would this tube have any effect on it? I've never had any issues with it so I figure it must be something simple. Thanks
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Post by Deleted on Mar 22, 2015 10:37:19 GMT -7
Recto would usually be the first one I would swap.
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Post by rickc007 on Mar 22, 2015 17:35:24 GMT -7
Can't imagine the Rectifier causing that myself ....
Can/did you test another Speaker ?
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Post by jlowder23 on Mar 22, 2015 18:06:29 GMT -7
No I didn't test another speaker. The gold that's in it is not very old but I guess maybe it could still had something go wrong. I'll check that next
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Post by Jefferson on Mar 23, 2015 10:12:52 GMT -7
same thing happened to me a few weeks ago. it was a bad connection with one of my George L's on the pedalboard...
operator error on my part im sure...
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Post by thatstatuemoved on Mar 25, 2015 18:44:25 GMT -7
I use george L's and have had trouble sporadically with them. I really like them but they are not bulletproof. They can be working fine one minute and then not the next. Whenever I hear a difference in my tone, that is the first thing I check and usually it is one of the cables. This has happened to me several times. It is probably me not putting them together quite right, but I think I am doing everything right. Did you ever figure out what was wrong? Just wondering.
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Post by jlowder23 on Mar 25, 2015 21:21:00 GMT -7
I use george L's and have had trouble sporadically with them. I really like them but they are not bulletproof. They can be working fine one minute and then not the next. Whenever I hear a difference in my tone, that is the first thing I check and usually it is one of the cables. This has happened to me several times. It is probably me not putting them together quite right, but I think I am doing everything right. Did you ever figure out what was wrong? Just wondering. I still have not figured it out. Got my rig hooked up at home and everything sounds great now. Im hoping it was just a loose cable
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Post by thatstatuemoved on Mar 26, 2015 8:34:35 GMT -7
Boy stuff like that can really drive you crazy. Hope you get it figured out. Check ALL your pedalboard cables as well as your instrument cables as well. Good luck and let us know when you find the culprit.
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Post by suhrplayer on Mar 30, 2015 8:15:52 GMT -7
I've had this exact scenario happen several times and chased my tail over and over with my M12 and those George L right angle connectors...very frustrating. Sometimes it was a bad George L connector termination, sometimes the EL84's had gone bad and sometimes I get a temporary volume/tone discrepancy I just can't figure out.
In the process of soldering all my George L cables with pancake jacks as my frustration level is at it's limit.
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Post by jesslm02 on Apr 7, 2015 13:08:14 GMT -7
Don't know if you got this sorted out, but I have had bad luck with the George L's solder-less plugs. I switched to soldered connections. Also, bad power from the venue can do strange things to to tube amps. If the voltage was dipping low, that could very well cause the amp to overdrive at lower than normal volumes.
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Post by jlowder23 on Apr 7, 2015 19:51:43 GMT -7
Don't know if you got this sorted out, but I have had bad luck with the George L's solder-less plugs. I switched to soldered connections. Also, bad power from the venue can do strange things to to tube amps. If the voltage was dipping low, that could very well cause the amp to overdrive at lower than normal volumes. I'm starting to wonder if it was bad power. I got the amp home and everything worked great. I'm using it again Saturday night so we'll see what happens.
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Post by doctorice on Apr 8, 2015 7:59:08 GMT -7
Don't know if you got this sorted out, but I have had bad luck with the George L's solder-less plugs. I switched to soldered connections. Also, bad power from the venue can do strange things to to tube amps. If the voltage was dipping low, that could very well cause the amp to overdrive at lower than normal volumes. I'm starting to wonder if it was bad power. I got the amp home and everything worked great. I'm using it again Saturday night so we'll see what happens. Certainly a possibility. I was playing a gig, the venue decided to bring the lights down a bit and -- I was right in the middle of a solo -- amp faded and died. I was plugged into an outlet that was on a dimmer switch .
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Post by Deleted on Apr 8, 2015 8:00:15 GMT -7
I'm starting to wonder if it was bad power. I got the amp home and everything worked great. I'm using it again Saturday night so we'll see what happens. Certainly a possibility. I was playing a gig, the venue decided to bring the lights down a bit and -- I was right in the middle of a solo -- amp faded and died. I was plugged into an outlet that was on a dimmer switch . Yeeooowch!
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Post by jesslm02 on Apr 8, 2015 8:22:34 GMT -7
I'm starting to wonder if it was bad power. I got the amp home and everything worked great. I'm using it again Saturday night so we'll see what happens. Certainly a possibility. I was playing a gig, the venue decided to bring the lights down a bit and -- I was right in the middle of a solo -- amp faded and died. I was plugged into an outlet that was on a dimmer switch . Wow! That's a new one, lol!
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Post by jesslm02 on Apr 9, 2015 7:54:15 GMT -7
I'm starting to wonder if it was bad power. I got the amp home and everything worked great. I'm using it again Saturday night so we'll see what happens. Certainly a possibility. I was playing a gig, the venue decided to bring the lights down a bit and -- I was right in the middle of a solo -- amp faded and died. I was plugged into an outlet that was on a dimmer switch . Hey they had a built-in variac right there! LOL! Just in case you aren't familiar with a variac: www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=variacYa'll can probably elaborate on this more than me, but they have been used with amps to drop the incoming mains power for quicker amp OD and different feel. And commonly used for testing purposes and troubleshooting amps.
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Post by doctorice on Apr 9, 2015 12:24:48 GMT -7
^^^
I've got a couple of 'em so I can drop the 125+v Con Ed pumps in these days back to 110v to 117v for older amps.
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Post by jlowder23 on Apr 11, 2015 21:47:47 GMT -7
I've come to a conclusion that the ef86 is my problem. I ordered 2 nos telefunken a week ago. Blew both of them tonight. It sounded like a b3 organ when they went. I just so happen to have an extra winged C. I put it in and so far so good. Why would I blow 2 ef86 in 1 night? I'm playing on the low setting with volume at 3.
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Post by jesslm02 on Apr 12, 2015 7:40:28 GMT -7
I've come to a conclusion that the ef86 is my problem. I ordered 2 nos telefunken a week ago. Blew both of them tonight. It sounded like a b3 organ when they went. I just so happen to have an extra winged C. I put it in and so far so good. Why would I blow 2 ef86 in 1 night? I'm playing on the low setting with volume at 3. That's just tubes for you. And ef86's in general. I've had some lasted several years and other times a new amp would show up with a microphonic ef86 - probably caused by shipping.
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Post by Jefferson on Apr 13, 2015 13:05:26 GMT -7
Had the same problem. doc recommended a Dario Mini-Watt EF86 and its been going great for a good long while now.
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Post by jlowder23 on Apr 13, 2015 14:57:25 GMT -7
Had the same problem. doc recommended a Dario Mini-Watt EF86 and its been going great for a good long while now. where did you get the mini watt? I haven't had any luck.
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Post by jesslm02 on Apr 16, 2015 13:28:52 GMT -7
If you can't find a miniwatt, the Tesla EF806 is good too. And are still relatively cheap for NOS.
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Post by bnads on Apr 28, 2015 18:26:57 GMT -7
I've gone through a few NOS Teslas - nice warm tone, but lots of noise. I'm gonna try a RFT based on the suggestion of Jon at the tube store.
I've tried finding a Dario - not many around.
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