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Dsavitsk/Beezar Torpedo Build Thread - Page 17

post #241 of 639
Thread Starter 

I understand.  However, the whole point of the Torpedo was to produce a true transformer-coupled, high-voltage tube amp that was based completely on a single PCB.  Such an animal still does not exist, even now - except for the Torpedo.

 

The links I gave you are Dsavitsk's experience in designing the predecessors to the Torpedo - which are all point-to-point. smily_headphones1.gif


Edited by tomb - 10/13/12 at 4:02pm
post #242 of 639

Why do we need a PCB for this.  The design for Grados is incredible,  but if one can't p-p such a simple amp they probably shouldn't be messing with HV in the first place ?

 

If you really want to do the DIY community a favor,  get a group buy or somehow make permalloy headphone size parafeed output transformers available.   Thats what we need,  thats the hole in the market.  Not a PCB.  Most would pay triple what E-Print would charge to wind them,  just need to order enough lamination and find the right wind.

post #243 of 639
Thread Starter 

troll ...

post #244 of 639
Quote:
Originally Posted by catfish View Post

 

If you really want to do the DIY community a favor,  get a group buy or somehow make permalloy headphone size parafeed output transformers available.   Thats what we need...

c'mon tomb... this is what we really need.

post #245 of 639
Thread Starter 
Quote:
Originally Posted by vixr View Post

c'mon tomb... this is what we really need.

I hope you're kidding, vixr.

post #246 of 639
Quote:
Originally Posted by tomb View Post

I hope you're kidding, vixr.

I am kidding...sometimes I cant resist feeding the trolls.

post #247 of 639
Quote:
Originally Posted by vixr View Post

I am kidding...sometimes I cant resist feeding the trolls.

 

Actuarial

post #248 of 639

I'm not really sure that he is trolling.*

 

It is worth noting that if its not on a PCB basically nobody on head-fi builds it**, so whats the point in starting a thread? Doug has many very cool designs on his site, nobody builds them, but there they are... 

 

 

* Whats wrong with the other "super-aloy" transformers that are available from Sowter, magnequest, Lundahl, etc? There are quite a few realllly nice transformers available already. 

 

**the MHSS is an exception. 


Edited by nikongod - 10/31/12 at 11:25am
post #249 of 639
Thread Starter 
Quote:
Originally Posted by nikongod View Post

I'm not really sure that he is trolling.*

 

It is worth noting that if its not on a PCB basically nobody on head-fi builds it**, so whats the point in starting a thread? Doug has many very cool designs on his site, nobody builds them, but there they are... 

 

 

* Whats wrong with the other "super-aloy" transformers that are available from Sowter, magnequest, Lundahl, etc? There are quite a few realllly nice transformers available already. 

 

**the MHSS is an exception. 

I agree with your assessment on PCB's, but that's the arena here and one that I'm in, too.  I also agree with your point that Doug has many very cool designs on his site.  Seriously, the intent was to bring high-voltage, tube amp quality sound to a PCB that was fairly idiot-proof and inexpensive to the masses.  Heck, it's the first high-voltage amp I've built and now I've built several of them.  I'm not sure I'm ready to try a point-to-point, even now.  It was one of the reasons I talked him into designing it - because I wanted to build his L'esspresivo without fear. wink.gif

 

You'll have to ask him about the transformers, but I suspect all the other ones you mentioned are too expensive for the idea involved, here.  He is also busy at work with a "Super-Torpedo," but it's not going to be anywhere near as inexpensive or use $2 tubes.

post #250 of 639

Tom,

 

For clarity;

If I order a kit now, which version do I get?

The topedo website and the Beezar website make no mention of the toroid.

Andy

post #251 of 639
Thread Starter 
Quote:
Originally Posted by UKToecutter View Post

Tom,

 

For clarity;

If I order a kit now, which version do I get?

The topedo website and the Beezar website make no mention of the toroid.

Andy

That's true.  It's not available yet and to tell the truth, the toroid has little or no effect in the standard Torpedo.  In fact, it may be worse.  It also costs significantly more.  If Dsavitsk is able to solve the toroid's problem with the mfr, then we may offer it as standard with the Super-Torpedo.  (I think Dsavitsk hates that name, but I don't have a better one at the moment.)  That's assuming it becomes an improvement.  There are some other mods that he's discovered that may actually address the hum in the standard Torpedo.  I haven't tested them yet, but I've actually been running a standard Torpedo that's as quiet as the Super-Torpedo and is quite acceptable as my primary amp with Grados.  It uses the 5844 tubes and includes a choke, but there are no other mods beyond that.

 

Dsavitsk currently has three different versions of the Torpedo, along with several different transformers, and is still busy running every test in the book.  He's discovered some interesting things, but we'll have to wait until he's ready to discuss them.  

post #252 of 639

Tom,

 

Thanks for the confirmation.

I've placed my order.

I look forward to hearing about the latest 'discoverys' and hope they'll be published before I build.

 

Thanks

 

Andy

post #253 of 639

TomB

 

Everything arrived this morning.

I have to say, your packing is impeccable.

Many Thanks

 

Now to sort out my Mouser order..........

post #254 of 639
Thread Starter 
Quote:
Originally Posted by UKToecutter View Post

TomB

 

Everything arrived this morning.

I have to say, your packing is impeccable.

Many Thanks

 

Now to sort out my Mouser order..........

Many thanks on the compliment!  Good luck on your build!

 

P.S. If you're still ordering - be sure to get the choke, if you can.  It will be quieter that way.

post #255 of 639

Tom,

 

Choke on order from Mouser.

 

BTW, the 1N5820 specified in the BOM is no longer available at Mouser.

I have sustituted 863-1N5820G which seems to be the identical spec.

 

Andy

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