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Problem related to Push-Pull or EL34?

Hej

I have compared my EL84 amp with an EL34 amp and what strikes me is that the EL34 amp is boomy. I know that my room has a problem in the bass region and it’s like the E34 amp makes this worse. So why is that? Both are Push-Pull, but my EL84 amp has got the original capacitors replaced to “ultrafast” capacitors. So this makes me wonder if there is any truth in what I've heard: 

  1. ...the Push-Pull design in itself increases the bass and makes the sound a little boomy.

  2. ...you can counteract this by replacing capacitors to “ultrafast” capacitors.

  3. ...EL34 tubes by design emphasis bass frequencies.

This makes me very frustrated because I really like this EL34 amp (LM EL34IA) except for this bass problem. The amp is in my budget range and I need the 40W it gives (which means Push-Pull).

Any thoughts?

simna

Showing 1 response by truman

truman
142 posts
 
Pleased that OP has tangentially, but nonetheless, highlighted how good E-84's can sound. One of my favorite output tubes that "doesn't get the press it deserves". And, yes, it does have nice rich bass that often warrants a "double take".
EL-34's offer a lighter style, more "finesse" like a Lafite Wine... it seems to me. -Though I know the circuit is at least as important.
See if you can't listen to an EL-84 amp sometime.
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