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6L6 to KT88's in RD-100 ?


Geoffrey Jacob (geoffj)
Username: geoffj

Registered: 02-2011
Posted on Tuesday, February 01, 2011 - 08:13 am:   

Does a bias resistor or any other component(s) have to be swapped out as well ?

If so, which ones, and what values ?

Mike Kaus (mm210)
Username: mm210

Registered: 05-2006
Posted on Sunday, February 06, 2011 - 03:51 am:   

Really wish I could but never tried them.
Mike Kaus (mm210)
Username: mm210

Registered: 05-2006
Posted on Sunday, February 06, 2011 - 01:20 pm:   

One thing you also need to consider is the amount of current draw that they have. Some of the new prod kt88's pull a boatload of current to power the heaters. Probably more than the MM transformer can handle. Just something to consider. Mike.,
Bill Traylor (bozzy369)
Username: bozzy369

Registered: 02-2008
Posted on Thursday, February 10, 2011 - 07:06 am:   

well,kool a subject I can pipe in on,lol.I have kt88's in mine (might be were you heard of it on here.before I did it I did check the draw for the ones I installed and they were right in line with a 6L6,so that never concerned me,my only concern was the pin layout was abit different,but being the adventurous type i tried it anyway .thats been a long time ago and they sound great .had to change the way they hang ,took out the 6L6 clamps and used the kt88 spring type.now the ones I installed are the electo-harmonix ones got a great deal,and would have to recomend them .I can't say I have checked to see if the more expensive kt's have a bigger draw.one thing though they will change the sound of a 100 rd ,you lose a ton of fender sounding tone .made mine sound more marshall/mesa like ,but I did a few other mods too so that may be not all tubes.?I guess all I wanted to say is I had a great experience , but any mod is a try at your own risk sort of thing .
Dubby Dub Dub

KT88 in sixty five

My tech believes amps with the highest plate voltage respond best to KT88. I've got an RP 65 and a sixty five and decided to mod the sixty five because it's plate voltage is at 780volts! I think that's a bit over spec, but all the readings ran true to form so I took the plunge. Not had a proper go on it yet but will report back.

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