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Analog Squared Paper Discussion and Appreciation Thread. - Page 167

post #2491 of 3317
yes. and what a pitty if the amp would sound better than with my other 154 tubes!
post #2492 of 3317
I somehow think the tubes will beat solid state in this application as it has been designed for tubes after all, but who knows!

Oh, and just realized this was my 4000th post! So glad it was on the ASP thread!
Edited by ianmedium - 10/19/13 at 8:22pm
post #2493 of 3317

Am I bidding against somebody on this thread?

http://www.ebay.co.uk/itm/5-of-1T4-DF91-tubes-for-battery-operation-/310769303322?&maxbid=20.5&autorefresh=true

I can back off, at the request of a fellow A2P user...

post #2494 of 3317
Quote:
Originally Posted by Sam Edwards View Post

Am I bidding against somebody on this thread?



http://www.ebay.co.uk/itm/5-of-1T4-DF91-tubes-for-battery-operation-/310769303322?&maxbid=20.5&autorefresh=true



I can back off, at the request of a fellow A2P user...

 



this is the seller i bought mine. i had the same problem that when i wanted to order the rt df91, only tube sets to bid for were available. but you can do what i did: i sent an ebay email to the seller, nice guy, and then he will place just what you want as new offer so you can order your tubes with the quantity you requested.

edit - sorry, it is not the seller i bought mine, but here you also can buy them, you know the seller:

http://www.ebay.com/itm/4-PIECES-OF-DF91-DF-91-1T4-1-T4-NOS-NEW-OWN-BOX-/370903783715?pt=DE_TV_Video_Audio_Elektronenr%C3%B6hren_Valves&hash=item565b969923
Edited by GermanGuy - 10/20/13 at 6:16am
post #2495 of 3317

Hey GG,

How do you identify the pins to Jumper on the DF97? Are there markings to identify them? And what did you use, a little wire and solder? 

I put the same questions under the photo...

BTW Are there any more tube cleaning kits available in the US?


Edited by Sam Edwards - 10/20/13 at 1:35pm
post #2496 of 3317
Sam, just shot you a PM re-GG's cleaning kit.
post #2497 of 3317
Quote:
Originally Posted by Sam Edwards View Post

Hey GG,



How do you identify the pins to Jumper on the DF97? Are there markings to identify them? And what did you use, a little wire and solder? 



I put the same questions under the photo...



BTW Are there any more tube cleaning kits available in the US?


 



woodcans takes care of the us distribution.
post #2498 of 3317

You're the man, Ian.

post #2499 of 3317

Processed By eBay with ImageMagick, z1.1.0. ||B2

 

Here is a picture of df97 tubes pin 4 and 5 conected:

 

 

The pins are numbered and counted clockwise looking at the tube pins the gap and the tube placed just as in the picture above:

 

 

as you can see here, in the case of the standard df91, pin 4 is not used, but the 3rd grid is internally connectecd to pin 1, where the 3rd grid of the df97 is connected to pin 4, so pin 4 and 5 have to be connected.


Edited by GermanGuy - 10/20/13 at 3:23pm
post #2500 of 3317

Hello, after a silent period, I am back... :-)

 

And I ( finally) found the time today to do my mod:  

 

- 4 pins-XLR Headphone plug fitted in a short chassis (very cramped inside !)

- Damping material fixed in several strategic locations inside & outside.

 

Thanks GG for the pictures that you posted in August, there were helpfull...

 

NOTE : Originally I disabled the front 1/8 jack to have the Left and right Grounds NON connected together (through the 1/8 jack), but after comparing with the R & L grounds connected / disconnected... I really could't hear ANY difference what so ever !  So... I reconnected the front 1/8 jack, and now the XLR at the back AND the 1/8 jack at the front are booth operationals :-)

 

  

 

 

 

 

 

 

AND for the Damping material:

 

  

 

   


Edited by bmichels - 10/20/13 at 5:05pm
post #2501 of 3317

Nice work Bmichels!

post #2502 of 3317
congratulations! as can be seen you even managed to keep the power jack on the rear side!

btw, i see the rft df97 - philco 1s4 combo plugged in, would be very interested in your opinion how this combo sounds!
post #2503 of 3317
Quote:
Originally Posted by GermanGuy View Post

congratulations! as can be seen you even managed to keep the power jack on the rear side!

btw, i see the rft df97 - philco 1s4 combo plugged in, would be very interested in your opinion how this combo sounds!

 

I am still testing the  Rft df97 - philco 1s4 combo, but I believe I may prefer the  Rft df97 - Philips DL92  combo.   Will swap back in few days to compare.

 

And I need to find the BINARD 1T4 (red print) to try with the Philips ;-)

post #2504 of 3317
BRIMAR DF91?
post #2505 of 3317

Thanks for the clarification, GG. 

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