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Goliath vs. iGoliath

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Posted on January 12, 2017 at 12:17:45
Tube747
Audiophile

Posts: 419
Joined: May 11, 2004
 Which one you prefer? And why??

http://www.triodedick.com/goliath/goliath_versterker.GIF

http://www.audio-creative.nl/wp-content/uploads/iGoliath-211-schema1.jpg

 

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RE: Goliath vs. iGoliath, posted on January 12, 2017 at 13:39:27
rage
Audiophile

Posts: 793
Joined: December 17, 2010
 I'd go with the transformer coupled version personally.

I like the simpler design and cathode feedback.

 

RE: Goliath vs. iGoliath, posted on January 12, 2017 at 13:51:04
Tube747
Audiophile

Posts: 419
Joined: May 11, 2004
 Is cathode feedback any good??

 

RE: Goliath vs. iGoliath, posted on January 12, 2017 at 15:49:00
Triode_Kingdom
Audiophile

Posts: 10049
Location: Central Texas
Joined: September 24, 2006
 Cathode feedback can be good, but it's use in SETs isn't common or well documented. Personally, I don't care for either of those circuits. ITs can cause considerable phase shift, so I'd pick the first one if I absolutely had to.

 

RE: Goliath vs. iGoliath, posted on January 12, 2017 at 17:53:22
drlowmu
Manufacturer

Posts: 9730
Location: East of Kansas City
Joined: January 10, 2005
 I'd do the simpler second one. I don't like all the grid stopper values in the first one at all, and there is a simplicity to the second one that appeals to me. I would use a nice Lundahl interstage, and a LSES power supply.

Have fun !!

Jeff

 

RE: Goliath vs. iGoliath, posted on January 13, 2017 at 13:11:11
rage
Audiophile

Posts: 793
Joined: December 17, 2010
 I'm not sure how well the LSES supply would go with 950 volts on tap!

Thinking it over and the nature of the question - I'd say neither of the above. Start with something easier to build and less dangerous to work with.

 

RE: Goliath vs. iGoliath, posted on January 13, 2017 at 14:23:48
megasat16
Audiophile

Posts: 207
Location: SoCal
Joined: April 15, 2015
 Really depends on the IT you have. Some IT are awesome. Some are not so awesome with severe phase shift and too bumpy FR.

I would build the IT circuit for simplicity and good sounding amp.

211 is an easier tube to drive than 845 so either one of these circuit should sounds good.
.
.
.Thou shall not stand where I type for I carry a bottle of Certified Audiophile Air and a Pure Silver Whip.

 

RE: Goliath vs. iGoliath, posted on January 13, 2017 at 15:06:12
SteveBrown
Audiophile

Posts: 2454
Location: Portland, OR
Joined: November 14, 2002
 I've always wanted to play with 845's and 211's but I'd agree, 950v is a lot of spark. Lots change above 400 or 500v, like the needed wire insulation, choke ratings, obviously cap values, etc. Not sure why LSES is an issue; kind of both a philosophy and a tactical implementation, maybe I'm missing something there.

 

RE: Goliath vs. iGoliath, posted on January 13, 2017 at 15:10:24
drlowmu
Manufacturer

Posts: 9730
Location: East of Kansas City
Joined: January 10, 2005
 I would think the Lundahl IT will do the job nicely. A safe choice.

I only do two stage direct coupled 2A3 amps, but if I had to use a IT, I'd source something from Kevin in all likely hood.

Regards,

Jeff Medwin

 

RE: Goliath vs. iGoliath, posted on January 13, 2017 at 18:43:13
vinnie2
Audiophile

Posts: 4481
Location: North Carolina
Joined: September 28, 2013
 So build a low voltage one instead. My 813 SET amp started out using 845's. B+ is only 350vdc. Great sound.

 

Either will be fine if you use the right wire, posted on January 16, 2017 at 03:45:07
PakProtector
Audiophile

Posts: 12366
Joined: May 14, 2002
 Or you can go and learn a bit about how to judge a circuit yourself. Discover what limits OPT performance for instance, or look into active plate loads...it is all out there, waiting for you to pick it up and free yourself from meaningless opinions...:)
cheers,
Douglas
Friend, I would not hurt thee for the world...but thou art standing where I am about to shoot.

 

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