NAD: Fortin Evil Pumpkin

[FourT6and2]

That would make sense but satan is not allowed in my house!

You have me over all the time bro

 

[Exo-metal]

You have me over all the time bro

Do I look worried, Jesus has it covered bro.

 

[mAx___]

I've been coming back to re-watch this video for the past five or six years:

 

[311boogieman]

That would make sense but satan is not allowed in my house!

Then get a Natas

 

[Exo-metal]

Then get a Natas

Nah, what I want is a 2ch triple rectifier this year.

 

[311boogieman]

Nah, what I want is a 2ch triple rectifier this year.

I was just messin' around.

Is it because you are after the Rev F tone though?

 

[Simon Dorn]

Also... most Wizards have diode clipping and look at all the people that drool over them.

Is that true? lol Which models?

 

[harddriver]

You have me over all the time bro

Do I look worried, Jesus has it covered bro.

 

[Exo-metal]

I was just messin' around.

Is it because you are after the Rev F tone though?

Not at all, no. There's no mods for 3ch but that's not the case for the 2ch, it can be tweaked.

 

[FourT6and2]

Is that true? lol Which models?

Last I checked, most of them. Maybe not the HR or 800, but the rest certainly do. I haven't seen inside the HR and I forget what's in the 800. The first Wizard models were inspired by the Silver Jubilee, which also has LED/diode clipping.

 

[Simon Dorn]

Last I checked, most of them. Maybe not the HR or 800, but the rest certainly do. I haven't seen inside the HR and I forget what's in the 800. The first Wizard models were inspired by the Silver Jubilee, which also has LED/diode clipping.

Interesting. Thanks.

 

[novosibir]

Awesome stuff! I'm excited to see the sexy gut shot of this amplifier!

Have a look onto the main board inside your computer. It looks similar

 

[novosibir]

He’s waiting for Larry to create new designs.
The Fortin “Thor’s Mallet” is in the works.

Then we'll rename him Mike Fiftin and I'll apply him a tinned nose, when I meet him someday in person

 

[novosibir]

Also don't understand why Fortin doesn't release more amps. Like at this point surely he can just hire someone to do all the work and he just QAs them.

The Chinese company, where Mike has his Sigil and EP built, make you two prototypes, after that the minimum order is 20 pcs. each.

If you don't have enough money to get 20 pcs. - because after all you have to pay 40% before the start of production, another 40% as soon as the amps are ready for shipping and the remaining 20% as soon as you have received the shipment - then they will build you another 2 prototypes, but at the high prototype price

This is how business with Chinese works

It's just too expensive for him to build these amps himself in Canada.

 

[novosibir]

Most people think it's high plate voltage that kills tubes. It's not. It's screen voltage.

A wise and true insight.
Before a plate dies due to too high voltage, the screen grid is already long history

Just as an example the power amp section of the Musicman amps, which is not wired in class A/B mode as usual, but in class B mode to get more power out of EL34 than Marshall, Hiwatt, etc.

There are 750-800 volts on the plates, but "only" 375-400 volts on the screens - and no "good" EL34 dies under these conditions.

 

[novosibir]

Power tubes don't last forever...

This statement is only partially correct.

RFT EL34 from the 60's and 70's, Mullard EL34 from the 60's and 70's and RCA 6L6GC blackplate from the late 50's and 60's have an almost infinite lifespan.

I have measured these tube types after a reliably assured rehearsal & live use of a total of up to 3,000 hours with at least 70-80% residual power.

 

[novosibir]

The Shuguang ones can't take high plate voltage. I think they are for under 400V hifi amps. They instantly died in my Wizard and I had to return them.

Swap in KT77's from Shuguang.
That's what Peter Diezel did, after having permanently trouble with the chinese EL34's

 

[FourT6and2]

Swap in KT77's from Shuguang.
That's what Peter Diezel did, after having permanently trouble with the chinese EL34's

The Shuguang BHT is a very strong tube, though. They can handle 500v+ on the screens. But they don't make them anymore.

 

[CDawg]

https://lampes-et-tubes.info/sp/sp056.php

"The objective of a 20-year life was met by the first transatlantic cable, where 306 tubes operated for 22 years without a failure. This cable was retired in Nov. 1978 for economic reasons. By that time, the 1608 tubes on the sea bottom, in seven cable systems, had given 287 million tube-hours of trouble-free service."

https://www.r-type.org/articles/art-279.htm

52,000+ hours

http://www.emissionlabs.com/Article...ifetime-of-the-45-tube/Index-lifetime-45.html

40,000+ hours

http://www.emissionlabs.com/html/guarantee/About-Lifetime.html

Company manufacturing tubes talks about what's required to have long lasting tubes.

 

[Racerxrated]

View attachment 429265

"Her last one, came out Sideways....."