I built a RT*6 clone.
375-0-375 PT
JTM45 6.6k UL OT
I'm considering gutting out and building a KT66 wreck type.  My question is can I use this tranny I don't want to buy another one.  I have a 30v zener to drop B+ and am using a GZ34 rect tube.  any advice, thanks
			
			
									
									
						What to do with 375vac PT
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Re: What to do with 375vac PT
Rattler,
Are you thinking about a Rocket or an Express type of Wreck?
I am also curious how much current the secondaries will carry?
Here is something I did with KT-66's in a Rocket style amp - https://tubeamparchive.com/viewtopic.ph ... light=kt66
375 volts is pretty hot - I would estimate it at over 525 volts with the bare tranny & 485 with the zener diode. I think the KT-66's would take this and it's likely that you would end up with a very loud and clean amp.
Using the same info on an Express build there are others more qualified to say what you might expect.
In either case I think the 6.6K tranny would probably work well assuming it can handle everything a set of hot KT-66's are throwing out.
I hope you'll share what you learn if you do build.
rj
			
			
									
									Are you thinking about a Rocket or an Express type of Wreck?
I am also curious how much current the secondaries will carry?
Here is something I did with KT-66's in a Rocket style amp - https://tubeamparchive.com/viewtopic.ph ... light=kt66
375 volts is pretty hot - I would estimate it at over 525 volts with the bare tranny & 485 with the zener diode. I think the KT-66's would take this and it's likely that you would end up with a very loud and clean amp.
Using the same info on an Express build there are others more qualified to say what you might expect.
In either case I think the 6.6K tranny would probably work well assuming it can handle everything a set of hot KT-66's are throwing out.
I hope you'll share what you learn if you do build.
rj
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Re: What to do with 375vac PT
Thanks RJ, yeah the rockster was along the lines of what i'm looking for.  i do want more grind, so loud and clean is probably not how i want to go. Is there anything that can get me there even if very loud (i built an airbrake), I just want something that can bite.  i can add a MV if needed, the higher B+ should enable great cleans also, right?
again my parts:
2xkt66
375-0-375vac
gz34
Heyboer JTM45 o-tranny 8,9,6.6k UL
thanks again
			
			
									
									
						again my parts:
2xkt66
375-0-375vac
gz34
Heyboer JTM45 o-tranny 8,9,6.6k UL
thanks again
Re: What to do with 375vac PT
Check my ad for a power tranny with 560VCT. It has a 117V primary, so it's prolly closer to 600VCT. Shameless plug, I know.
			
			
									
									
						Re: What to do with 375vac PT
thanks dynaman, i just ordered stuff for another build so I'll have to pass right now, but i'll keep in mind
			
			
									
									
						