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Post by thatstatuemoved on May 12, 2023 8:50:14 GMT -7
Are the newer jetta combo's free of the tube rattle problem or do they need the mod? Just wondering--Jester
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Post by frankie on May 12, 2023 12:32:53 GMT -7
Are the newer jetta combo's free of the tube rattle problem or do they need the mod? Just wondering--Jester All of our large bottle tube amps come with the same modification of the tube base that is in that video. Also, the bias change for the Jetta has been in all amps since roughly early 2021.
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Post by hosscartwheel14 on May 13, 2023 16:44:28 GMT -7
Are the newer jetta combo's free of the tube rattle problem or do they need the mod? Just wondering--Jester All of our large bottle tube amps come with the same modification of the tube base that is in that video. Also, the bias change for the Jetta has been in all amps since roughly early 2021.
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Post by hosscartwheel14 on May 13, 2023 16:48:00 GMT -7
My Jetta head has a date of 8-20 and it has the mod on it.
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Post by DRZ on May 14, 2023 5:11:26 GMT -7
My Jetta head has a date of 8-20 and it has the mod on it. Did you buy it new ? It may have been mod'd by previous owner possibly. Which Output tubes are in your amp, Tung-Sol or JJ ? The set is near 3 years old maybe a new set is needed.
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Post by hosscartwheel14 on May 14, 2023 9:53:30 GMT -7
My Jetta head has a date of 8-20 and it has the mod on it. Did you buy it new ? It may have been mod'd by previous owner possibly. Which Output tubes are in your amp, Tung-Sol or JJ ? The set is near 3 years old maybe a new set is needed. I bought it at Sweetwater. It had tung sol output tubes in it. I changed them to JJs.
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Post by hosscartwheel14 on May 14, 2023 10:05:01 GMT -7
I should mention that the Jetta head I bought from Sweetwater was sold to me as a ‘demo’ model. I was told that a customer ordered the amp and it got some scratches on the back corner pieces during shipping so he returned it and they had to sell it as a demo model..they knocked off a little over 200 bux off the price but still gave me the 2 year warranty on it. When I changed the tubes do to some distorted noise, I notices the tube retainers and the rings on the output tubes and they were Tung-Sol tubes. I replaced them with JJs. The tube change took care of the distorted issue..I was surprised that it had the mod on it for the date it was built.. Hoss
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Post by thatstatuemoved on May 14, 2023 10:06:47 GMT -7
Can anyone tell me the size of the tube dampners needed for the mod? I have a few that fit el-84's. but are these too small for the mod? Thanks for any advice. Also what kind of glue is used to secure the ring to the tope of the spring retainer? Thanks!
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Post by hosscartwheel14 on May 14, 2023 10:52:04 GMT -7
Can anyone tell me the size of the tube dampners needed for the mod? I have a few that fir el-84's. but are these too small for the mod? Thanks for any advice. Also what kind of glue is used to secure the ring to the tope of the spring retainer? Thanks! My dampeners are not glued to the retainer. The pressure from the spring holds them in place. Hoss
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Post by frankie on May 15, 2023 9:41:43 GMT -7
Can anyone tell me the size of the tube dampners needed for the mod? I have a few that fit el-84's. but are these too small for the mod? Thanks for any advice. Also what kind of glue is used to secure the ring to the tope of the spring retainer? Thanks! Parts are linked in the video description: Dr. Z suggested silicon glue in the video, however, QA does not glue them when they leave the shop, they are help in place by spring pressure so no need for glue.
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