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Singlepower tube rolling thread - Page 3

post #31 of 334
I guess my contribution to this thread will be a pointer to a back-issue of Vacuum Tube Valley magazine. The Sping 1999 issue, issue #11, has 6SN7s as the primary cover story, with a multipage article on their history and development, harmonic distortion ratings for most/all of the NOS variants, and a page of listening notes. 7 pages of text and photos in the article.

It is about $15 plus shipping.

http://www.vacuumtube.com/
post #32 of 334
Quote:
Originally posted by bobjew
First off, forget about the Sovtek 6NS7's as they sound really lousy. I was at the electronics store for something else and they just happened to have a stock of them for 5.00 each and thought I'd give them a try. The sound was flaccid and weak compared to any of the others. Weak Bass and very little HF air.
Hi Bob,

Did you try Sovteks as drivers with an EH as the gain tube? I was going to buy them to try this, but I'll skip them if they don't have the goods.
post #33 of 334
Thread Starter 
Quote:
Originally posted by Rob N
Are the CBS-Hytron tubes made by Sylvania as the internal construction looks almost identical?
Many tubes were made by one manufacturer for another. I've got a set of 1951 Hytrons that not only look like Sylvania's, but have a Sylvania-style date code on the base. I'd be shocked if Sylvania wasn't the manufacturer. I'll have to look at the CBS Hytrons I've got, but I suspect the same may apply (although I've seen some CBS 6SN7GTB's that look like the offspring of an illicit affair between a Sylvania and a GE )
post #34 of 334
Carlos:

I did try those combinations and didn't like them. (Sovteks) If you are interested, I can send you my set and you can have them for postage.

Bob
post #35 of 334
The more my amp and EHs break in the more happy I am with the stock sound. How did using the Sovtek drivers alter the sonic signature from the all EH setup?
post #36 of 334
Carlos, its been awhile, here's what I can recall. The lack of Bass makes them sound weak and kind of coolish by themselves and in combination with the EH's makes everything thin sounding.

Off topic:
From Mikhail today in response to an email about IC's.:

Many of your customers have found that the Nordts Black
Nights are very good with the MPX3 in the under $200 range.
Cardas Neutral Reference is also a good choice but more
expensive. The Virtual Dynamics interconnects are actually
preferred for the high-end cables, but these are much more
expensive than the other types on the market. Another low
cost option would be the modern audio design flat cables,
these available for about $60 for 1.5 meters.

Just received a set of used VD Reference yesterday and they are settling in magnificently. Hastily written as Mikhail seems quite busy these days. I think he meant "Many of our customers..."
post #37 of 334
The Nordost Black Night is highly recommended to me by another fellow MPX3 owner. I think I will give those a try because they are pretty affordable. Originally I had my heart set on the HGA Silver Lace because I wanted to try silver ICs.
post #38 of 334
Quote:
Originally posted by Habib
The Nordost Black Night is highly recommended to me
They are very good, and not just with the MPX3. I've also had good results with the MagWires.
post #39 of 334
I came across some Sylvania tubes with gold/yellow lettering. Anyone has experience with those? Or I should just stick with the classics?
post #40 of 334
Thread Starter 
Quote:
Originally posted by Habib
I came across some Sylvania tubes with gold/yellow lettering. Anyone has experience with those? Or I should just stick with the classics?
I've seen the Gold lettering on the Syl 6SN7GTB. It's a tube that has good tonal balance, but IMO doesn't reach the same level of detail as the 6SN7GT.
post #41 of 334
Anyone know anything about these Sylvania JAN 6SN7WGTA tubes?

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&category=3284&item=30484152 45
post #42 of 334
Thread Starter 
Quote:
Originally posted by Rob N
Anyone know anything about these Sylvania JAN 6SN7WGTA tubes?

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&category=3284&item=30484152 45
I've tried the 6SN7WGTA. They tend to have a very dry sound. Midrange is lean. Extension at highs and lows is pretty good. The exact sound may depend on year of manufacture. I had a set from 1952 that I used regularly when I had the ZOTL, but later years exacerbated the issue with dryness of the sound. I heard the same dryness with the Supra, and didn't explore these tubes much further. They can be a decent tube, and might work well as output tubes if a tube with a full midrange was used as the gain tube.
post #43 of 334
What about Ken Rad VT231 black glass 1940's tubes,are they better as driver or output tubes?
post #44 of 334
Thread Starter 
Quote:
Originally posted by Rob N
What about Ken Rad VT231 black glass 1940's tubes,are they better as driver or output tubes?
I use them as a trio (see the first post of this thread). I've only tried using them with another tube once. They did well as an output tube, but the Sylvania's seem to combine better with other tubes. This is based on very little data, so my opinion is very open to change as I try other tubes.
post #45 of 334
Hirsch,I was thinking of trying a Ken Rad as input + Hytrons as output.
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