who digs KT77s in their JMP?...

[shooto]

this guy!

nice change from the vanilla EL34...don't get me wrong though, EL34s have their thing...maybe I just listen to to much of them...so it is very...vanilla-

77s are a little less output, a little rougher/grainy-er (think superlead/plexi) and a whole lot more 3D-ish

what a nice different flavor

....they and my transformers are doing fine too

win

 

[paul-e-mann]

Got them in my DSL for a win! My observation is they lower the compression accentuating the mids and add a bigger bottom end.

 

[chuckharmonjr]

Im running them in all 3 heads now. I love the added sparkle and chime. In the JMD, I can dial in a twin reverb with ease now.

 

[shooto]

yep and yep!

 

[mott555]

Can an EL34 amp run KT77s without modifications? If so I may have to try them sometime. I like Plexi sounds (especially early VH), and the more Plexi-like my DSL can get, the happier I'll be.

 

[chuckharmonjr]

Mott it is a direct replacement, just re-bias and rock out

 

[charveldan]

I wondered about this, got any clips/video ?

My tech said to switch from 34's to 77's just for the sake of doing it isn't really pragmatic.

 

[shooto]

I wondered about this, got any clips/video ?

My tech said to switch from 34's to 77's just for the sake of doing it isn't really pragmatic.

I've thought about making a recording...but I don't know if it would come across well....it is not a terribly drastic change, like going from a 12ax7 to a 5751 or something, but it is definitely noticeable and pleasing...less compression, more open and accentuated lows and highs...but still have that EL34 growl

 

[big dooley]

I wondered about this, got any clips/video ?

My tech said to switch from 34's to 77's just for the sake of doing it isn't really pragmatic.

dan, if you look for something between a 6550 and an EL34, these are your ticket... glassy and powerful like a 6550, rich and harmonical like an EL34
some people think they're too sterile, but they've never drove the shit out of them... i know you will

these tubes sound at their best with fairly high plate voltage, imo...

 

[big dooley]

well this is how they sound like, when you drive them real hard...
please note, that one of the valves is dying here... this was because i was using an attenuator at the time, that totally f#cked up the overall impedance, eventually resulting in screen overdissipation... this is my JVM 410H running in clean green with all controls maxed out...
first part is with the attenuator, second part without it

[ame=http://www.youtube.com/watch?v=4lH0uflkGs8]KT77 at the verge of death - YouTube[/ame]

 

[shooto]

well this is how they sound like, when you drive them real hard...
please note, that one of the valves is dying here... this was because i was using an attenuator at the time, that totally f#cked up the overall impedance, eventually resulting in screen overdissipation... this is my JVM 410H running in clean green with all controls maxed out...
first part is with the attenuator, second part without it

KT77 at the verge of death - YouTube

yep- that's what they sound like...great crunch with clean....glorious with gain

 

[charveldan]

My 34's midrange turns to butta the more you crank it.

Plenty of headroom, gain, volume & whomp......think i'll stay where im at.

 

[paul-e-mann]

I wondered about this, got any clips/video ?

My tech said to switch from 34's to 77's just for the sake of doing it isn't really pragmatic.

Heres a tone comparison of E34L and KT77 made by David Corrales

JJ E34L vs JJ KT77 by davidcorrales on SoundCloud - Hear the world

It was this clip and conversation with David that convinced me to try them. No regrets.

 

[rocknblues]

Got them in my DSL for a win! My observation is they lower the compression accentuating the mids and add a bigger bottom end.

I second Pedecamp's post.

Pedecamp, I know that you know that I know that 77's are good.

 

[paul-e-mann]

Yes they are!