Pre-amp tube shootout this weekend.

Discussion - HT Venue amplifiers. Inspiration from Studio to Stage.
apw100
Posts: 44
Joined: Mon Jan 03, 2011 1:00 am
Location: Jacksonville, FL USA
Contact:

Thu Feb 03, 2011 5:35 am

I will be doing a comparison of a few different 12AX7 preamp tubes this weekend. The contenders will be the stock ones, Tung-sols, JJ's, Electro-Harmonix and Grove Tubes(if I can get them by then). I will also do a comparison between the stock 12AU7 and an Electro-Harmonix one.

Here is a photo of the tubes that will be tested...
Image
Left side: ECC82/12AU7- TAD(stock), JJ, Elecro-Harmonix
Right side: ECC83/12AX7- Sovtek(stock), JJ, Tung-sol, Electro-Harmonix


Any suggestions as to the method I should use to test?

I will probably record a few samples directly from my guitar into my audio interface, feed those into the HT-60 Stage and record the result with an SM57. I think this would be the best way to do an accurate comparison.

After this is done I will install a set of WGS Veteran 30's into the amp and do an A-B comparison between those and the stock Celestions.
Last edited by apw100 on Thu Feb 03, 2011 8:49 pm, edited 1 time in total.

KKND
Posts: 770
Joined: Sat May 01, 2010 12:00 am
Location: Oman

Thu Feb 03, 2011 12:44 pm

I am about o place the order for my WGS...i will eagerly wait for your comparison clips.......

KKND
Posts: 770
Joined: Sat May 01, 2010 12:00 am
Location: Oman

Sat Feb 05, 2011 11:37 am

Still waiting..... :P

ozzyjim
Posts: 13
Joined: Fri Aug 20, 2010 12:00 am

Sat Feb 05, 2011 3:00 pm

Your making a great effort there mate, good stuff. You should film it too as I'm sure it would be a big hit on YouTube etc.. I have ht20 and I've already changed the pre amp tubes to jj's and wow it sounded much much better, I'm getting the power tubes changed/biased as I type so hopefully that makes it even better.
Can't wait to hear your results!

Cheers
Jim

apw100
Posts: 44
Joined: Mon Jan 03, 2011 1:00 am
Location: Jacksonville, FL USA
Contact:

Sat Feb 05, 2011 4:44 pm

I'm off to buy a Groove Tubes 12AX7 now to round out the test group. I will start testing this afternoon or tomorrow morning. :)

Iwan
Posts: 40
Joined: Sun Nov 14, 2010 1:00 am
Location: Netherlands

Sat Feb 05, 2011 9:45 pm

I'm curious as well. Tubes I tested were JJ's, TungSol V1's and GE NOS 5751. After several months and several swaps I currently am stuck on a TungSol V1 in both V1 and V2 in my HT-40. Tomorrow I'm replacing the 70-80 with a Classic Lead speaker, and I'm considering making it a (half) open back instead of closed.

KKND
Posts: 770
Joined: Sat May 01, 2010 12:00 am
Location: Oman

Tue Feb 08, 2011 7:59 am

Hey man, sorry to bother you but how did it go with the Veteran 30s :lol: i am really eager to place an order, i just need that little push, want to hear how much difference would it make.

Thanks

johnrobbfl
Posts: 9
Joined: Tue Jan 11, 2011 1:00 am

Sun Feb 13, 2011 5:22 pm

Hey guys,

I'm somewhat if a newbie but wanted to give you my experience.

I have a Soloist HT-60 and replaced the stock tubes with Mesa Boogies. The difference is incredible. My friend just bought a Stage 60 and we did a direct comparison using an A/B foot-switch. My Soloist with the single 12" had deeper bass, smoother, clearer and more distortion at nearly every volume level and the clean channel was more open and quieter than his Stage with 2 x 12".

I also can't believe how loud the Soloist plays, but don't know if the tubes had anything to do with that or the design.


Trikke64
Posts: 18
Joined: Sat Dec 18, 2010 1:00 am

Mon Feb 14, 2011 6:27 pm

I installed a set of Electro Harmonix tubes 3 months ago, and already one of the tubes is gone ( RIP last weekend :( ...)
OK, possiblly it was a bad tube.. I admit I didn't rebias the amp ... So, I put back the original tubes

I'm curious for the result of your test -especially for the Tung-Sol ( don't forget that the tubes need to be burned in before giving their real sound)

Is it possible for you to post some mp-3 files or YouTube stuff ?









KKND
Posts: 770
Joined: Sat May 01, 2010 12:00 am
Location: Oman

Tue Feb 15, 2011 6:45 am

Trikke64 wrote:I installed a set of Electro Harmonix tubes 3 months ago, and already one of the tubes is gone ( RIP last weekend :( ...)
OK, possiblly it was a bad tube.. I admit I didn't rebias the amp ... So, I put back the original tubes

I'm curious for the result of your test -especially for the Tung-Sol ( don't forget that the tubes need to be burned in before giving their real sound)

Is it possible for you to post some mp-3 files or YouTube stuff ?







sounds like you put a set of EHX power tubes, the OP is testing pre amp tubes.

Thanks

Post Reply
  • Information
  • Who is online

    Users browsing this forum: No registered users and 10 guests