Putting 6L6 in a Bogner Ultra Uber EL34 amp?

[stratjacket]

There are several mega threads on the Bigger Ultra Uber and the various power tubes options. I’ve read them all but didn’t get a direct declaration from them. So I thought I’d ask directly.

I have an Ultra Uber with EL34’s. I would like to have 6L6’s instead.

Other amps I own (KSR for example) can take either, just have to adjust the bias, no problem.

Can I do this in the Ultra Uber with just a bias change?
Or what would I need to do in order to put 6L6’s in it?
Or am I just shit outta luck and the only way is to get the UU that comes with 6L6’s?

Thanks

 

[peterc52]

I don’t know. But I’ve read elsewhere that the EL34 version takes KT88 also

 

[stratjacket]

I don’t know. But I’ve read elsewhere that the EL34 version takes KT88 also

I’d try that if it’s a straight deal and bias adjustment too

 

[RedB4Black]

I’d try that if it’s a straight deal and bias adjustment too

You can put KT88s in it. It’s in the manual. I ran KT88s in mine for awhile.

 

[tonedog]

You need a different transformer for 6L6s. NOT INTERCHANGEABLE according to the manual.

 

[stratjacket]

You can put KT88s in it. It’s in the manual. I ran KT88s in mine for awhile.

You are correct sir…damn I haven’t been hit with an RTFM in years, ha

 

[stratjacket]

You need a different transformer for 6L6s. NOT INTERCHANGEABLE according to the manual.

Yep, thanks to Mr R4B I just read through…that stinks

 

[stratjacket]

Ok, fuck it, I just ordered a set of KT88’s…$299 for a quad set of Gold Lions. Let’s hope they’re reliable…

 

[John4021]

Ok, fuck it, I just ordered a set of KT88’s…$299 for a quad set of Gold Lions. Let’s hope they’re reliable…

Gold Lions are durable and tonefull
Talked to Bogner about it and he gave the Thumbs up to running KT88's ad EL 34's

 

[HellraiserJohnny]

There are several mega threads on the Bigger Ultra Uber and the various power tubes options. I’ve read them all but didn’t get a direct declaration from them. So I thought I’d ask directly.

I have an Ultra Uber with EL34’s. I would like to have 6L6’s instead.

Other amps I own (KSR for example) can take either, just have to adjust the bias, no problem.

Can I do this in the Ultra Uber with just a bias change?
Or what would I need to do in order to put 6L6’s in it?
Or am I just shit outta luck and the only way is to get the UU that comes with 6L6’s?

Thanks

Hoping you know WHY you want KT88s. My guy in Russia (Myasnikov) explained to me the difference between 6L6 AND EL34 power tubes when he built my custom 50/50 tube amp. The EL34 will break up sooner gving you more power tube break up earlier than the 6L6. I had him put the EL34s in because I just don't play loud like I did 20 years ago and I like the little bit of power tube break up I get. The 6L6's have to be pushed really hard before they start to break up. I've played loud enough in my years to appreciate power tube break up (not really distortion). My Syn 50/50 has 4 x 6L6's and I have to blow the paint off the walls to get a touch of power tube break up. It's just not practical (without an attenuator) and the Syn 50/50 amp can't be re-biased - KT88 are never going to give you power tube break up unless you push the amp to the wall. I can only assume that's what you are going for?

 

[stratjacket]

Hoping you know WHY you want KT88s. My guy in Russia (Myasnikov) explained to me the difference between 6L6 AND EL34 power tubes when he built my custom 50/50 tube amp. The EL34 will break up sooner gving you more power tube break up earlier than the 6L6. I had him put the EL34s in because I just don't play loud like I did 20 years ago and I like the little bit of power tube break up I get. The 6L6's have to be pushed really hard before they start to break up. I've played loud enough in my years to appreciate power tube break up (not really distortion). My Syn 50/50 has 4 x 6L6's and I have to blow the paint off the walls to get a touch of power tube break up. It's just not practical (without an attenuator) and the Syn 50/50 amp can't be re-biased - KT88 are never going to give you power tube break up unless you push the amp to the wall. I can only assume that's what you are going for?

That sounds about right for me. There are many variables, but over the years I seem to get along with 6L6’s better. I play through a Redseven EVO Reactive Load so I do have the amps cranked to around 10 o’clock, it’d blow my ear drums if playing that loud through a cabinet.

I’ve had amps with KT88’s before and loved them. I had a Shiva 20th with KT88’s and loved it for a long time, traded it, then got another one with EL34’s and didn’t like it nearly the same so sold it. I don’t think I’m an EL34 lover. But will report back once I get them swapped.

I have the Uber Synergy module I play through a KSR power amp with 6L6’s and enjoy it more than my Ultra Uber. The UU has way more sound variety in it so I’m hoping a change of the EL34’s will do the trick. It’s fun trying shit anyway

 

[HellraiserJohnny]

That sounds about right for me. There are many variables, but over the years I seem to get along with 6L6’s better. I play through a Redseven EVO Reactive Load so I do have the amps cranked to around 10 o’clock, it’d blow my ear drums if playing that loud through a cabinet.

I’ve had amps with KT88’s before and loved them. I had a Shiva 20th with KT88’s and loved it for a long time, traded it, then got another one with EL34’s and didn’t like it nearly the same so sold it. I don’t think I’m an EL34 lover. But will report back once I get them swapped.

I have the Uber Synergy module I play through a KSR power amp with 6L6’s and enjoy it more than my Ultra Uber. The UU has way more sound variety in it so I’m hoping a change of the EL34’s will do the trick. It’s fun trying shit anyway

Yeah, me too. I have stacks and boxes of both pre and power tubes. My guitarist partner in crime has a couple MESA heads and we play the tube swap game all the time. I'm really looking forward to using my attenuator and cranking the Syn 50/50 and cutting some tracks with it again sometime soon.