Search found 7 matches

by imaradiostar
Fri Oct 12, 2012 9:14 pm
Forum: Technical Discussion
Topic: Dr Z Route 66 (VVR3 Works)
Replies: 28
Views: 9729

Re: Dr Z Route 66 (VVR3 Works)

So to be clear- you scaled the whole amp?

Very interesting. It sounds great!

jamie
by imaradiostar
Fri Apr 27, 2012 4:59 am
Forum: Technical Discussion
Topic: anyone know the KT45 output primary impedance?
Replies: 8
Views: 2197

Re: anyone know the KT45 output primary impedance?

I love my 7591 ultralinear version!! It's been my main amp for years.

jamie
by imaradiostar
Tue Feb 08, 2011 5:09 am
Forum: Technical Discussion
Topic: anyone know the KT45 output primary impedance?
Replies: 8
Views: 2197

Re: anyone know the KT45 output primary impedance?

It's the old debate. Sure, it'll make sound and probably not blow up anywhere from 3k to 7k (given big enough screen resistors) but I'm wondering if transformer impedance is part of what makes one of these things special. Maybe I need a special output transformer wound by experienced hands on ancien...
by imaradiostar
Tue Feb 08, 2011 4:50 am
Forum: Technical Discussion
Topic: anyone know the KT45 output primary impedance?
Replies: 8
Views: 2197

Re: anyone know the KT45 output primary impedance?

If you don't want to hurt Mr. Z's feelings then buy one of his amps and measure the impedances yourself! ...but I don't know of any places in the Philadelphia area that are open this late and stock Z amps! You're right though. That would be the best way. Most people are here to learn and that's wha...
by imaradiostar
Tue Feb 08, 2011 4:23 am
Forum: Technical Discussion
Topic: anyone know the KT45 output primary impedance?
Replies: 8
Views: 2197

anyone know the KT45 output primary impedance?

I don't wanna hurt Dr. Z's business, I'm just curious for comparison sake. Feel free to message me privately if you know but don't want to admit it.

thanks,

jamie
by imaradiostar
Fri Apr 16, 2010 1:52 am
Forum: Technical Discussion
Topic: What's the mojo to the Hiwatt design?
Replies: 14
Views: 7321

Re: What's the mojo to the Hiwatt design?

depending on the version of Hiwatt you're referring to that triode carries signal. On the earlier ones it's a level shifted cathode follower that establishes DC bias for the PI and couples the signal to the PI. I don't know if I've ever posted here before...odd. Sorry if I'm jumping in out of turn! ...
by imaradiostar
Fri Feb 13, 2009 2:22 am
Forum: Technical Discussion
Topic: Where to get circuit board meterial?
Replies: 32
Views: 7359

Re: Where to get circuit board meterial?

I've built with turrets in lexan...it melts and makes a mess and the turrets pull through the plastic. It works, but not as well as garolite.

jamie