[Acapella11]

Quote:

 
So for the 6BE6/5750, use EF95 setting with no 2-7 strap for optimal performance?

Yes.
 
1) EF95: Most balanced setting. Very nice bass, good treble extension. (Leaves grid 3 floating, no issues on my system. Fixed one of the two tubes humming.)
2) EF91/92: Most "analog" setting. Brighter than the above, less bass weight
3) EF95 + 2/7 strap: Very bass heavy and rolled off treble, sounds somewhat dynamic compressed to me.

 

[mab1376]

Awesome!, Thanks for the info.
 
As of this moment I FINALLY did the pin 2-7 strap for the Tung Sol 6AH6WA with USAF markings on it.
 
So far my impressions are WOW, from the Raytheon 6GX6 tubes I was using.
 
I'll report back later once they're burned in, also waiting on TS 6BE6 tubes and have some untested GE 6AU6WA tubes on hand as well.

 

[MIKELAP]

Quote:

Awesome!, Thanks for the info.
 
As of this moment I FINALLY did the pin 2-7 strap for the Tung Sol 6AH6WA with USAF markings on it.
 
So far my impressions are WOW, from the Raytheon 6GX6 tubes I was using.
 
I'll report back later once they're burned in, also waiting on TS 6BE6 tubes and have some untested GE 6AU6WA tubes on hand as well.

 
Actually i am listening to those also same seller i guess USAF TS 6AH6WA  got those this morning sound pretty good i listened before to the 6AU6A  they sound equally as good .

 

[mordy]

I have the Tung Sol JTL 6AH6WA tubes from 1962/63 which are very good. Did anybody have a chance to compare these to the Tung Sol 6485?
Is there any difference?

 

[mab1376]

Quote:

 
Actually i am listening to those also same seller i guess USAF TS 6AH6WA  got those this morning sound pretty good i listened before to the 6AU6A  they sound equally as good .

 
Which power tubes are you running? currently I'm using the 6N6P-IR, i also plan on testing with the EH 6H30P-PI. Also I'm on an MK IV SE if that makes much of a difference. I honestly never compared it to the III, it was in my budget so I splurged on the higher tier model.

 

[hypnos1]

mab 1376.
 
If you can stretch your budget even further (or beg/steal/borrow!), go for the 6H(N)30P-DRs - it appears all owners of these could never go back...me included. It just hurts a bit to think they were listed less than 10 years ago at 18$ !! - would have been a marvellous investment...
 
IF you do, beware the later ones (eg. '91), at a lower than average cost - they are not much different to the (much cheaper) 6H30Pis. They look darned near identical - the (better) earlier ones (eg early 80s) have an inner coating that extends a good bit further down the tube, and has a slight bronze tint . Certainly worth the extra...
 
 
All.
 
Another 10 hours on the Sylvania GB 5750s(6BE6) - about 35 in all - on the EF95 setting (easy for me as this MKiv se is hardwired just for same) and the bass is now doing what A11 described, along with everything else. MAGICAL. Thanks A11...

 

[mab1376]

Quote:

mab 1376.
 
If you can stretch your budget even further (or beg/steal/borrow!), go for the 6H(N)30P-DRs - it appears all owners of these could never go back...me included. It just hurts a bit to think they were listed less than 10 years ago at 18$ !! - would have been a marvellous investment...
 
IF you do, beware the later ones (eg. '91), at a lower than average cost - they are not much different to the (much cheaper) 6H30Pis. They look darned near identical - the (better) earlier ones (eg early 80s) have an inner coating that extends a good bit further down the tube, and have a slight bronze tint . Certainly worth the extra...
 
 
All.
 
Another 10 hours on the Sylvania GB 5750s(6BE6) - about 35 in all - on the EF95 setting (easy for me as this MKiv se is hardwired just for same) and the bass is now doing what A11 described, along with everything else. MAGICAL. Thanks A11...

 
I've had these in my sights since I bought the amp, hopefully one day soon!
 
http://www.ebay.com/itm/6N30P-DR-Matched-Pair-Reflector-Supertube-NOS-Lot-of-2-tubes-1982-/281113624022?pt=Vintage_Electronics_R2&hash=item4173ad7dd6

 

[MIKELAP]

Quote:

 
Which power tubes are you running? currently I'm using the 6N6P-IR, i also plan on testing with the EH 6H30P-PI. Also I'm on an MK IV SE if that makes much of a difference. I honestly never compared it to the III, it was in my budget so I splurged on the higher tier model.

I am using 6H30PI gold pin power tubes i have revision 2.0 mk3

 

[MIKELAP]

Regarding the sockets it seems they did not send me the right ones they sent the B models and we need the A model there picture 

 

[mab1376]

I got the same email, for now i got my 2-7 strap working and I'm not touching it until i get the right adapter.

 

[MIKELAP]

Quote:

I got the same email, for now i got my 2-7 strap working and I'm not touching it until i get the right adapter.

Same here meanwhile those 6ah6wa are pretty nice really detailed how about you similar .

 

[BGRoberts]

Quote:

Regarding the sockets it seems they did not send me the right ones they sent the B models and we need the A model there picture 

 
Did they send everyone the wrong one's?
Interesting.
I've requested they send me the A type.

 

[MIKELAP]

Quote:

 
Did they send everyone the wrong one's?
Interesting.
I've requested they send me the A type.

Me to ,if B doesnt work only choice left is A that the extent of my knowledge but if A doesnt work maybe  a more technical approach in the phrasing department from the more knowledgeable guys on this forum would help them understand what we mean by strapping 2 and 7. we will see in a couple of weeks when we get the other sockets.

 

[inphu510n]

When they asked the A vs B question I replied by sending them the image AFB took of the 2-7 pin jumper in post #876.
Somehow, I think they misunderstood what we were asking for because the A and B diagrams they sent do not make sense to me. It's as if they thought we wanted to tie pins 2/7 together and have them routed into either pin 7's socket or pin 2's socket.

 

[Acapella11]

Quote:

 
Which power tubes are you running? currently I'm using the 6N6P-IR, i also plan on testing with the EH 6H30P-PI. Also I'm on an MK IV SE if that makes much of a difference. I honestly never compared it to the III, it was in my budget so I splurged on the higher tier model.

Hi mab1376, I use the 6N6P-IR as well and have also a Sovtek 6H30P-EV. The latter was only from 2011, so may not reflect a pre-1985 6H30P-EV but comparing those, I assume that only the 6H30P-DR would be a sensible upgrade from 6N6P-IR.