SET Shootout China VS The USA

@jond 

 

well what we are all finding out is that there are such amplifiers as 

 

~~~DHT PUsh Pull~~~

Ner heard such a  design.

All I knew about is SETSETSET.

A SET on a  xover type speaker does not work, I tried it, its  a complete failure. Either high end horn or FR (or Concentric if that floats your boat, Tannoy.

My next experiement is to find out if the KT88 ,,,lets say, how dif in  nuances /midrange is the voicing on a  KT88 vs  a  KT90.

This is my next experiement.

I'm holding out hope for my PP amp.

What can a  KT90 offer paired up witha    dual FR.

The 88's were just a  bit too midrange heavy to work with dual FR.

Its like midrange X's 3.

From what I remember of the EI90's in the JOR, there was magic in the soundstage.

= more recessed midrange.

I think everyine goes for the 88's as their xover/low sens speakers needs all the  voice they can get in midrange.

 

This is why they choose 88's. 

The 90 has been completely totally thrown under the  bus.

Google kt90 on audiogon,,, haha, maybe 5 posts on that tube past 10 years. vs 88's, 100's of posts. 

Its all which 88  is best.

Audiokarma, DIY, all sites, 888888888888.

If I can sell my cayin  cd17 I can get the 90 tubes,,,no bites 3 days,,,,,, priced rock bottom  w mundorfs.

 

 

I have no experience with the KT series other than the KT77 which I think is a great tube. But you are doing it again you're not listening to tubes you're listening to tube amps. So whatever tube it is you do listen to next make sure it's in a good amp.

@mozartfan 

SET on a  xover type speaker does not work, I tried it, its  a complete failure

Perhaps in your one instance,  the complete opposite experience for me. My 3 way 5 driver speakers were built from the ground up to be very compatible with SET amplifiers.  Same brand (Coincident) built by the same person (Israel Blume). Granted the crossover is a minimalist 1st order design (One  tweeter capacitor). I'm referring to the Coincident Total Eclipse II,  94 db sensitivity and a 14 ohm impedance load. 

It pairs exceedingly well with the Frankenstein MK II 300b SET mono blocks. 8 watts of pure music listening joy. It replaced my very good 100 watt mono blocks (6550 or KT 88). So once again it  most definitely depends on what specific amplifier (All 300bs aren't created equally) and what specific multi driver speaker (They aren't all the same). This is my sublime experience the past 12 years. 

Charles 

@jond 

But you are doing it again you're not listening to tubes you're listening to tube amps. So whatever tube it is you do listen to next make sure it's in a good amp.

100% correct👍

Charles 

BTW the 307 tube is not a DHT but is in a fact a pentode tube.

There are a couple of ways to turn it into a ’virtual triode’ with rather attractive plate curves.the equal of many a ’native’ DHT.. ie when configured in this fashion it can effectively be considered a DHT.

Triode strapped 6AV5 didplay remarkably similar plate curves to the 2A3, but are insirectly heated.