Dennis Had Inspire Amps

[Comzee]

Originally Posted by Beatlebum

Getting close on my Inspire Fire Bottle PSE with Blue Alps volume control.

You building it yourself?
Does Dennis give out his schematics to builders that want to DIY his amps?

Also, what does "PSE" stand for, and how does it differ from the "Fire-Bottle SE HO" model?

[o]

Originally Posted by Comzee

You building it yourself?
Does Dennis give out his schematics to builders that want to DIY his amps?

Also, what does "PSE" stand for, and how does it differ from the "Fire-Bottle SE HO" model?

Dennis is building it for him.

PSE = parallel single ended; more power and lower output impedance.

[BearCityUSA]

Originally Posted by Comzee

You building it yourself? Does Dennis give out his schematics to builders that want to DIY his amps? Also, what does "PSE" stand for, and how does it differ from the "Fire-Bottle SE HO" model?

Dennis is pretty secretive about his circuits. No DH diy schematics coming forth that I foresee.

As posted PSE is parallel single ended. The Inspire runs 4 output tubes pse, basically doubling the output power providing much more usable wattage before even subtle breakup. It seems tricky to pull off well. The typical fire-bottle has 2 output tubes. Some of the sweetest 6-12 watts you will hear,... at least in the price range.

[Analog Addict]

Originally Posted by BearCityUSA

Dennis is pretty secretive about his circuits. No DH diy schematics coming forth that I foresee.

As posted PSE is parallel single ended. The Inspire runs 4 output tubes pse, basically doubling the output power providing much more usable wattage before even subtle breakup. It seems tricky to pull off well. The typical fire-bottle has 2 output tubes. Some of the sweetest 6-12 watts you will hear,... at least in the price range.

Scott - you need to drive down here and listen for yourself to a PSE set up. BTW, where can I shoot you a response to that question you asked me? I can't reply to the visitor comment....

[FloridaBoy]

Originally Posted by Beatlebum

Getting close on my Inspire Fire Bottle PSE with Blue Alps volume control.

Attachment 49878

Attachment 49879

Excellent! It looks lonely. What it needs is a LP27A preamp to play with.

[straitwire]

Originally Posted by Analog Addict

Well, not exactly. Here's the PS schematic to the PSE 45 I recently finished. Please pardon the large gun oil stain. Apparently I can't resist laying down my papers on top of oily rags.



Anyway, that amp is a standard single rectifier with multiple filtering stages and a final voltage regulated stage that uses 3 VR tubes instead of Zener diodes.

OTOH, Tony has sent two chassis off to the powder coater that I believe will feature VR tubes as well...



He may know what the plans are for these, but I know Dennis has accumulated a supply of VR tubes for something......

The chassis in the back was the push-pull 12V6 C.G.Conn organ amp you had in the trunk of your car Analog, with the modified layout I used on my C.G.Conn when Dennis and I rebuilt it as a 6CA7 PSE with 0A3 VR's in High Gloss Black (will post pics), and the chassis in the front uses the same sorta layout with expanded spacing for larger tubes and our power trans as well as mounting holes for all of our current output iron with extra mounting holes for multiple filament trans and/or extra chokes (I went a little overboard with this one)...both of these will be Copper, can't wait to build them!!!

[Bombadil]

Originally Posted by Bombadil

...
Svetlana made some very good tubes, including the famous Winged C EL34. But they closed in 2012. As mentioned earlier, EI closed around 2003.

A followup on my earlier post. Svetlana did indeed close in 2012, however New Sensor bought their name. Just like they bought Mullard, Tung-sol, Genalex and more names.

So there are current production tubes being made which are branded as Svetlana, being manufactured at the Xpo-pul (the old Reflektor) factory. Who knows if these are any different than a Sovtek, or Mullard, or Tung-sol branded tube?

This gets confusing when one is attempting to purchase a Svetlana 6550 which was made in the St Petersburg Svetlana factory in 2010 or so, vs buying a current production Svetlana 6550. They are not the same tube.

[Beatlebum]

Oh boy! Getting really excited to hear this in my system!








PSE.jpg

PSE 2.jpg

PSE 3.jpg

[BearCityUSA]

Originally Posted by Beatlebum

Oh boy! Getting really excited to hear this in my system!

Attachment 49894

Awesome! Black on Black. No Logo? No on/off indicator? Totally BADASS!!

[Formerly YB-2]

Originally Posted by Beatlebum

Oh boy! Getting really excited to hear this in my system!

Great looking piece. Is that a 2-channel PP amp?