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Jadis JA-80: Tubes and speakers.

I am sorry to have to raise old issues here but I am looking for some updated information. 
I just bought Jadis JA80 circa 2000. It came with the GE 6550 but I changed the tubes for KT-120 (authorized by Jadis).
The ECC83 and ECC82 are Telefunken.  
Still, I don't feel in audio heaven. (preamp is JPL). 
I was thinking of trying other tubes like JJ EL34L. I was wondering if anybody compared the El34 variety to the KT variety on the JA80. 
The speakers I have are ESP Bohdran (92 db) but I feel the match is not perfect. (I also have Luxman M900U which sounds much better with the ESP, although it lacks that 'tube magic').
The main complaint I have is in the mid-bass (too bloated), and not enough dynamics.  
So any suggestions for tubes and speakers for the JA-80? 
Thanks.  
taviran

Showing 2 responses by daveyf

daveyf's avatar
daveyf
3,012 posts
 
@mozartfan Don’t get confused that the JA80 and the JA80Mk2 are the same amp! They are not. The JA80Mk2 is designed for the KT150 tube..the original JA80 is not. Same applies for your Defy7. The Defy 7 is NOT designed to utilize the KT150 tube. Check with Jadis first before trying the KT150, otherwise a blown transformer may be the result.
I have posted on several forums that swapping in KT150’s into amps that are not designed for this tube is asking for trouble...seems like the word is not spreading!
daveyf's avatar
daveyf
3,012 posts
 
Interesting that Jadis authorized the use of the KT120 in your amp, I would not have thought they would do that...
Nonetheless, I think the sound you are laying at the amps door is probably not the amps fault. As Jond stated above, it sounds like you have a classic mismatch of amp to speaker. So many folks just buy amps and plunk them down in front of their speakers without considering the all important synergy between the two. Unfortunately, this hobby doesn’t reward mismatches...and you are experiencing an amp/ speaker mismatch, imho. I guess you didn’t have the opportunity or desire to listen to this pairing before acquiring the Jadis.
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