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Post subject: What is your favorite hot rod deluxe tube combination?
Posted: Sun Sep 20, 2015 5:27 pm
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I just purchased a hrd surf green fsr. It sounds great in the store a little loud at home I have read that some 12at7 will fix that. I have also seen several other combinations. Just curious what are some of your fav tubes to use in this amp?


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Post subject: Re: What is your favorite hot rod deluxe tube combination?
Posted: Tue Sep 22, 2015 2:57 pm
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thunderfan1979 wrote:
I just purchased a hrd surf green fsr. It sounds great in the store a little loud at home I have read that some 12at7 will fix that. I have also seen several other combinations. Just curious what are some of your fav tubes to use in this amp?
Input 2 is 6db softer than input 1. As for tube replacement, I was looking to tame the beast - also to get a more "Bluesy" sound - and I went with the recommendations of the good people on this forum. Perhaps they will work for you as well.

V1, V2: Jan Philips 5751s
V3: Mullard 12AT7

HTH

Cheers!
BM

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Post subject: Re: What is your favorite hot rod deluxe tube combination?
Posted: Wed Sep 23, 2015 7:10 am
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I ordered a jj 12at7 and a sovtek 5751 to play around with.


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Post subject: Re: What is your favorite hot rod deluxe tube combination?
Posted: Wed Sep 23, 2015 7:26 am
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Dunno if changing the 12AX7 to a 12AT7 or 5751 will reduce volume that much. Should change tone. Another tube to experiment with, in the input stage, is the EH 12AY7 (6072A).


http://www.thetubestore.com/Tubes/12AY7 ... -6072-Gold


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Post subject: Re: What is your favorite hot rod deluxe tube combination?
Posted: Wed Sep 23, 2015 2:57 pm
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I use JJ gold plated 12AX7's and JJ 6L6 power tubes ordered a little hotter than the coldest. I BIAS the amp myself usually at 78-82 or so MV, a little hotter than Fender recommends. I buy my tubes from Eurotubes and they have videos on their website for BIASING instructions.

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Last edited by desertbluesman on Wed Sep 23, 2015 2:59 pm, edited 1 time in total.

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Post subject: Re: What is your favorite hot rod deluxe tube combination?
Posted: Wed Sep 23, 2015 2:59 pm
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thunderfan1979 wrote:
It sounds great in the store a little loud at home


Use the second guitar input, that tames the loud a big bunch.

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Post subject: Re: What is your favorite hot rod deluxe tube combination?
Posted: Thu Sep 24, 2015 2:50 pm
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I did a lot of tube experimentation on my Peavey Classic 50/410 and my favourite 5751 in the V1 position was a new Tung-Sol. To my ears it had much better tone and clarity than the new production JJ and Sovtek. The JAN Philips was my second favourite for V1.

Do not put a 12AT7 (or 12AU7) in a tone creation position. It is a driver tube for reverbs and phase inverters. If you want to reduce gain stick to a 5751 or 12AY7.


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Post subject: Re: What is your favorite hot rod deluxe tube combination?
Posted: Fri Sep 25, 2015 6:04 pm
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The George Benson model has a 12at7 in v1.


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Post subject: Re: What is your favorite hot rod deluxe tube combination?
Posted: Sat Sep 26, 2015 1:27 am
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Perhaps the circuit in the George Benson model was designed for a 12AT7 in V1. Whilst there will always be exceptions, a 12AT7 is generally not a good choice in a V1 that was designed for a 12AX7.


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Post subject: Re: What is your favorite hot rod deluxe tube combination?
Posted: Tue Sep 29, 2015 8:51 pm
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Having been around tubes since, oh...........1954, my grandfather repaired radios and record players for radio stations, businesses, homes, etc. My aunt worked at one of the radio stations. I learned all about structures, plates, weak ones, heaters, speakers, ohms, flux, rosin, wire gauges, etc.
I've owned, gigged with, Black face Bandmaster, 3 different Super Reverbs, two of them Black face, Black face Concert, early 70's Twin, 70's Deluxe Reverb..LATE 80's Super 60, early 70's Ampeg Gemini GV22, early 70's Ampeg V2 stack .
Clearly, everyone is an expert on pre-amp tubes here, and what physically/sonically they can do.
With my Hot Rod Deluxe III, I've experimented with most of them in V1, 2, 3 etc. Using the 12AT7 in V1 gives more headroom, warmth, and less ice picky brittleness. I've used an MXR DynaComp for 35 years for lead bending sustain, not chicken pickin'.
I swapped a 12" Fender Eminence from a 1980's London Reverb , for the JUNK Chinese Celestion, ( I have a better sounding 60's Radio Shack 12" -Jensen) Now THAT warmed it greatly. Put my holy grail stash of RCA black plate 6L6's, 2 GE 12AX7, and a Mullard 12AT7 in V1. It's a wink and a nod closer to the Fender voicing I'm used to for all these years. (damn I miss my Supers) The debate on different tube manufacturers is another smile maker for me. Russian or Chinese ? PAAAALEASE ! JJ or GT..., WOW !
And again, not everyone hears the same thing, someone not blessed to have played through all the ones I have had, would not hear what I hear. That's why there are more Squiers and Frontman products sold 100 to 1, than the mid to upper priced Fender amps and guitars.
Sadly, the day will come, not in my lifetime, that the USA made vacuum tubes will be gone. STOCK UP NOW ! There is a BIG difference.posting.php?mode=reply&f=13&t=99745#

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