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Post subject: Hot Rod Deluxe - tube noise depends on guitar used
Posted: Sun Jan 24, 2010 8:02 pm
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I have a 1998 HRD made in Calif, and I'm very happy with it. I've been playing a Strat American Deluxe HSS on it for 2 years - no problem. - I recently bought a Gibson ES-339 and when I play it the tubes make a popping sound which increases with volume and attack. Is it the semi hollow body that causes this? It's weird because the Strat still plays great with no tube breakup. It's a mystery to me......


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Posted: Mon Jan 25, 2010 6:11 am
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The Humbuckers are probably pushing the tubes harder and are making the problem evident. Humbuckers have a lot more power than single coil pickups. Try plugging into input 2. If your amps still has the stock Groove Tubes, I'd recommend getting JJ's and checking the bias.
Edit: I just saw your other post too. Sounds like you have tube rattle too. The stock tubes in these things are horrible.


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Posted: Mon Jan 25, 2010 10:43 am
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Thanks 63supro, I have tried input 2, and only hear a minor difference. But I think I'll take your advice on swapping out for better quality tubes. Also, I've read something about a foam damper or insulator around the tube? - Mine have nothing. So if I understand it, about 100 dollars or so should get me a new tube set. Not sure how to check the bias - does a tech have to do that?


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Posted: Mon Jan 25, 2010 1:12 pm
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Treetops,
Here's a link with everything you need.

www.eurotubes.com

They sell great sounding retube kits. They only sell JJ's brand, and they also have instructional videos on biasing. JJ's are great sounding tubes. You should have that foam piece around the two small preamp tubes all the way to the right. If you don't have the foam, you can order one or kust get some tube dampers off EBay for around 10 bucks. You can retube the amp for probably around 60-65 bucks.


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Posted: Mon Jan 25, 2010 1:17 pm
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63supro wrote:
Treetops,
Here's a link with everything you need.

www.eurotubes.com

They sell great sounding retube kits. They only sell JJ's brand, and they also have instructional videos on biasing. JJ's are great sounding tubes. You should have that foam piece around the two small preamp tubes all the way to the right. If you don't have the foam, you can order one or kust get some tube dampers off EBay for around 10 bucks. You can retube the amp for probably around 60-65 bucks.



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Posted: Mon Jan 25, 2010 6:29 pm
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Thanks again 63supro - this is great info to have. I've been playing about 3 years now, and having a blast while I'm at it. It sure helps to have help like this to set me in the right direction.
I'll be checking for the tubes and the dampers.


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Posted: Mon Jan 25, 2010 7:22 pm
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No problem. Let us know how you make out.


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Posted: Wed Jan 27, 2010 2:25 pm
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With a hollow or semi-hollow body guitar you may have to back the bass down a bit. I have found it helps with my g5120 gretsch.

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Posted: Sat Feb 06, 2010 6:23 pm
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I turned the bass down a bit, and was still getting lots of complaints from the tubes..........I think they are original 1998's and they're tired.
So, I've ordered from Eurotubes the Fender HRD Gold Pin Option tube kit, and I'm anxious to hear how they sound. They should be in by next week. I'll get my hands on a multi meter and read up on how to set the bias for the new tube set.
So I guess my next post will be telling you the results of the swap!


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Post subject: Tube Swap Success
Posted: Tue Feb 23, 2010 7:54 pm
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So, I received the tube kit from Eurotubes a few days ago. 2 JJ 6L6GC's, and 3 gold pin ECC83S's. I followed the instructions on the Eurotubes site with no problem. I adjusted the bias from 64 mV to 70 mV. What a difference. It's like a different amp. So thanks for the advice. I'm back in the saddle.


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Posted: Tue Feb 23, 2010 8:02 pm
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I'd push the bias up a bit more. It'll get really sweet. I ran mine at around 82 mv. Take it up to 75mv and see how you like it. :wink:


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Post subject: Re: Hot Rod Deluxe - tube noise depends on guitar used
Posted: Thu Aug 04, 2011 2:49 am
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Treetops wrote:
I have a 1998 HRD made in Calif, and I'm very happy with it. I play guitar a Strat American Deluxe HSS on it for 2 years - no problem. - I recently bought a Gibson ES-339 and when I play it the tubes make a popping sound which increases with volume and attack. Is it the semi hollow body that causes this? It's weird because the Strat still plays great with no tube breakup. It's a mystery to me......


63supro did answer and gave a lot of info in this case. Just wanna add that the usual cause is a loose connection, and usually at the jack. I'm not familiar with the amp, but I was able to fix mine with a bit of electrical tape.


Last edited by pauldrake on Sat Aug 06, 2011 10:16 pm, edited 1 time in total.

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Post subject: Re:
Posted: Thu Aug 04, 2011 2:49 pm
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63supro wrote:
Treetops,
Here's a link with everything you need.

http://www.eurotubes.com

They sell great sounding retube kits. They only sell JJ's brand, and they also have instructional videos on biasing. JJ's are great sounding tubes. You should have that foam piece around the two small preamp tubes all the way to the right. If you don't have the foam, you can order one or kust get some tube dampers off EBay for around 10 bucks. You can retube the amp for probably around 60-65 bucks.


+1

Also friendly customer service and happily answer questions in email. I had a tube giving me trouble and they told me how to tap it with a pencil to see if it was microphonic.


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