Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: mike9 on September 20, 2011, 01:46:15 am

Title: TungSol KT66's in a Loose Change modded '77 Super Reverb head
Post by: mike9 on September 20, 2011, 01:46:15 am

Dan was gracious enough to modify this amp for me and what a stellar job he did at that.  Since that time I've replaced the main caps - thank your Mr. Hoffman for prompt service - everything went well with the upgrade from original.  Lately I had to flesh out an order to get free shipping from an AMAZON vendor so I got some TungSol KT66's as they draw the same filament current as a 6L6CG.  OK I removed the clam shells as advertised then installed the spring retainers, tubes and biasd to 35MA @ 500P/V.  Damn this thing sounds good - much more harmonic complexity coming from the high end and I actually had to turn the bass up a tad on both channels. 

Overall it was the upgrade with the biggest effect I've done to the amp since modding it in the first place!!!!11

Title: Re: TungSol KT66's in a Loose Change modded '77 Super Reverb head
Post by: tubeswell on September 20, 2011, 02:29:22 am

Yep a fresh set of output tubes can do wonders

Title: Re: TungSol KT66's in a Loose Change modded '77 Super Reverb head
Post by: LooseChange on September 20, 2011, 05:07:18 am

Hi Mike.
What took you so long to jump on this forum? I've got a set of KT66's in my Super Reverb too. They sound great, especially when I set the volume up around 6.
Glad you are still liking the amp. It's been a while.

Title: Re: TungSol KT66's in a Loose Change modded '77 Super Reverb head
Post by: firemedic on September 20, 2011, 09:17:40 pm

I tried JJ 6L6GCs, TS 5881s, and Sovtek 6L6WXT+s in my TOS before landing on the TS KT66s- what a difference.
Where does one find the hardware to mount them in upside-down Fender chassis? I'm dying to try them in my Vibroverb......

Title: Re: TungSol KT66's in a Loose Change modded '77 Super Reverb head
Post by: sluckey on September 20, 2011, 09:32:25 pm

This may work...

http://www.tubesandmore.com/scripts/foxweb.dll/moreinfo@d:/dfs/elevclients/cemirror/ELEVATOR.FXP?item=S-H143 (http://www.tubesandmore.com/scripts/foxweb.dll/moreinfo@d:/dfs/elevclients/cemirror/ELEVATOR.FXP?item=S-H143)

Title: Re: TungSol KT66's in a Loose Change modded '77 Super Reverb head
Post by: firemedic on September 25, 2011, 09:11:32 pm

Thx sluckey, good site. The price is right anyway...