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2359glenn | studio - Page 61

post #901 of 10168

Glenn,

 

The Cavalli is a Hybrid amp a very pricey one. It sounds wonderful with the HE-6 headphones. However I heard that the next morning someone decided to “classify” the amp and blew out a channel.  What I was trying to say that this test unit was designed with two set of sockets that can use either octals that have 6SN7 basing or novals that have 12AU7 basing. Only one set can be used at a time and the sockets are arranged in a way that you cannot put four tubes in it at once. It has 6/12v switch and a high voltage switch of 200v or 330v which is half at the tubes.  Part of this is somewhat like you did with the rosgr63 amp.

Your idea of trying the 01A tube is good and the tubes are easy to get.

post #902 of 10168

The new amp looks great Glenn, I know rosgr63 will be ecstatic.  Wasn't it originally going to be a two-chassis unit though?

 

I've read the 01A is a good tube if you can find one that isn't microphonic.  Along those lines maybe the 71A would make a good driver too assuming the lower gain pairs well with the output tubes being used?  They're pretty cheap too.

post #903 of 10168

The 71A tube, are you serious!biggrin.gif

To add a bit of color what about the ARCTURUS BLUE???blink.gif

post #904 of 10168

I am lost for words. Thanks Glenn, you made a dream come true.

 

These Marconi Italiana look like Prima Donnas.

post #905 of 10168
Quote:
Originally Posted by rosgr63 View Post

I am lost for words. Thanks Glenn, you made a dream come true.

 

These Marconi Italiana look like Prima Donnas.

You are one of the few people that even have a supply of those tubes! Good luck and the long wait and the journey will soon to be complete and the adventure will continue!darthsmile.gif

post #906 of 10168
Quote:
Originally Posted by Xcalibur255 View Post

The new amp looks great Glenn, I know rosgr63 will be ecstatic.  Wasn't it originally going to be a two-chassis unit though?

 

I've read the 01A is a good tube if you can find one that isn't microphonic.  Along those lines maybe the 71A would make a good driver too assuming the lower gain pairs well with the output tubes being used?  They're pretty cheap too.

 

The two chassis unit was discussed but Glenn was able to fit all in a single box using a custom made transformer.

 

The two chassis concept will be implemented in the next project.

 

I feel like a 5 year old waiting for Santa Claus.........

post #907 of 10168
Thread Starter 
Quote:
Originally Posted by rosgr63 View Post

I am lost for words. Thanks Glenn, you made a dream come true.

 

These Marconi Italiana look like Prima Donnas.

 

To you & Glenn!

beerchug.gif

 

Of course, now, SO is gonna want some action...frown.gif

post #908 of 10168
Thread Starter 
Quote:
Originally Posted by 2359glenn View Post

rosgr63s amp with P250 direct heated triodes as drivers RCA 6AS7s and RCA 3DG4.

 

 

rosgr63 amp with 6SN7 as driver RCA 6AS7s and RCA 3DG4

just remove the P250s or LP2s and put in a 6SN7 or 12SN7

has 6 volt or 12 volt switch.

 

 

Well done Glenn, well done!

post #909 of 10168
Quote:
Originally Posted by john57 View Post

You are one of the few people that even have a supply of those tubes! Good luck and the long wait and the journey will soon to be complete and the adventure will continue!darthsmile.gif

 

 

It was worth it.

Parts had to be specially made for this amp as it's a 230V unit.

Glenn had to place special orders overseas as they could not be obtained in the US/EU.

 

It's been a pleasure talking to Glenn and friends about this project, learning along the way

My Italian friend Fabio has a nice stock, the only stock of some 80-100 of these tubes so I could pick another pair or two.

 

If I don't like them my humble 6SN7 and 12SN7 will serve me well.

 

Glenn was very clever and added this 6SN7/12SN7 option, it never crossed my mind.

post #910 of 10168
Quote:
Originally Posted by Silent One View Post

 

To you & Glenn!

beerchug.gif

 

Of course, now, SO is gonna want some action...frown.gif

 

 

Thanks SO, ready to help.

post #911 of 10168

You can also use 7N7 and the 14N7 with adpaters if you like. Many choices!

post #912 of 10168
Thread Starter 
Quote:
Originally Posted by rosgr63 View Post

Quote:
Originally Posted by Silent One View Post

 

To you & Glenn!

beerchug.gif

 

Of course, now, SO is gonna want some action...frown.gif

 

 

Thanks SO, ready to help.

 

Your build :thumb: provides us with a rare glimpse inside the studio...wonder if Glenn does Panoramas. popcorn.gif

post #913 of 10168

Indeed.

 

Also 2C51, 12AV7, 7AF7.

 

I know you like the 7N7 family.

I have never tried the 14N7.

post #914 of 10168
Quote:
Originally Posted by Silent One View Post

 

Your build :thumb: provides us with a rare glimpse inside the studio...wonder if Glenn does Panoramas. popcorn.gif

 

Now you are bad, very bad SO!!!!!!!!!!

post #915 of 10168
Thread Starter 
Quote:
Originally Posted by rosgr63 View Post

Quote:
Originally Posted by Silent One View Post

 

Your build :thumb: provides us with a rare glimpse inside the studio...wonder if Glenn does Panoramas. popcorn.gif

 

Now you are bad, very bad SO!!!!!!!!!!

 

Wait...and that ain't all! I wonder if Glenn will start with your custom, limited edition build and stamp the amp; Brass plaque the amp. I think this would be a nice tradition if he were to start. We'd throw in a few more $$$, of course! 

 

I'm workin', john57...biggrin.gif

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