[greenarrow]

OT here. I'v problem with opening up the bottom panel of the 336SE. I have loosen all the bottom screws and still cannot lift it up. Looks like there're some hidden screws which I've missed.

 

[BIG POPPA]

What about the screws under the stickers?

 

[greenarrow]

Quote:

Originally Posted by BIG POPPA /img/forum/go_quote.gif What about the screws under the stickers?

sheessh ... missed that

Thanks. I'm going to change the power switch and led and that's why I need to open the casing.

 

[shiaokun]

this week...

Svetlana 6H13C
Sylvania 6SN7 GTB E6B (on top)
black base, green text: Sylvania/Made in U.S.A.
mystery (again to me) code:
96
83
19

very neutral as pataburd pointed out, this Sylvania + Svetlana combo.

 

[Oskari]

Quote:

Originally Posted by shiaokun /img/forum/go_quote.gif mystery (again to me) code: 96 83 19

This could be

981 manufacturer code
639 date code

but the 981 is a dead end.

Are you sure about those numbers? Photo?

 

[shiaokun]

Oskari,

please check out the attached pictures...

the first one shows the numbers.

the second and the third are from differernt angle to show the inner works of the tube. hopefully that will help decoding this Sylvania.

 

[Oskari]

Quote:

Originally Posted by shiaokun /img/forum/go_quote.gif hopefully that will help decoding

Nope. Sorry.

 

[FloydCouncil]

Say fellas, I've found the "RCA 6SN7GT 6SN7 GT Amp Radio Vacuum Tube GREY GLASS '57" on eBay. I assume this will work with the DV 336? I know the DV takes all variants of the 6SN7, I just wanted to make sure that this is it.

Shall I pull the trigger?

I've ordered the 6H13C/6AS7G Svetlana tubes for the back.

 

[BIG POPPA]

I just bought these from ebay

I say buy the tubes. This is the fun part. Trying out different tubes. I have the Svetlana and like it. Like the RCA 6080 more. Don't know about the RCA 6sn7's though. Never listened to a RCA I didn't like. Loved them on my Figaro

 

[pataburd]

Quote:

Originally Posted by FloydCouncil /img/forum/go_quote.gif Say fellas, I've found the "RCA 6SN7GT 6SN7 GT Amp Radio Vacuum Tube GREY GLASS '57" on eBay. I assume this will work with the DV 336? I know the DV takes all variants of the 6SN7, I just wanted to make sure that this is it. Shall I pull the trigger? I've ordered the 6H13C/6AS7G Svetlana tubes for the back.

These tubes sound very good with the Darkvoice 336. : )

 

[HeadphoneAddict]

I found the grey glass RCA to sound very good, similar to the Sylvania VT-231.

 

[shiaokun]

another "mystery" Sylvania 6SN7 GTB this week...still paired with Svetlana 6H13C.

not even numbers but codes. looks like "jd" or "id" and "BGB". it'd be nice to know what these mean...

like the previous Sylvania, this combo has a "clean" sound.

 

[AS1]

Quote:

Originally Posted by shiaokun /img/forum/go_quote.gif another "mystery" Sylvania 6SN7 GTB this week...still paired with Svetlana 6H13C. not even numbers but codes. looks like "jd" or "id" and "BGB". it'd be nice to know what these mean... like the previous Sylvania, this combo has a "clean" sound.

a lot of those are actually the same as a Sylvania 6SN7 GTB

 

[FloydCouncil]

Quote:

Originally Posted by pataburd /img/forum/go_quote.gif These tubes sound very good with the Darkvoice 336. : )

Yes, I made my decision based on recommendations in this thread. Now I just hope the ebay sellers send my shipments quickly. I paid on the 25th and I'm awaiting confirmation of shipping!

 

[Oskari]

Quote:

Originally Posted by shiaokun /img/forum/go_quote.gif another "mystery" Sylvania 6SN7 GTB this week...still paired with Svetlana 6H13C. not even numbers but codes. looks like "jd" or "id" and "BGB". it'd be nice to know what these mean... like the previous Sylvania, this combo has a "clean" sound.

This is a later version of your previous specimen (in fact, the 639 could still be a date code for week 39 in 1956, even with that weird manufacturer code). I haven't seen these letter codes explained but you won't be far off guessing 1960s. I've got some Sylvania 6SN7GTBs which are very similar. These have green print on the glass and codes like ANU. They are probably even later than your red-print tube. I agree with the "clean" description. They are also perfectly quiet in the 336SE.