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Inspire by Dennis Had Enjoying Vacuum Tube Audio

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  #2061  
Old 08-21-2016, 11:44 AM
Comzee Comzee is offline
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Quote:
Originally Posted by FloridaBoy View Post
Which mesh tubes are you considering?
I'm thinking about the EML 5U4 or 274B for the rectifier.

I can't find any mesh alternatives to the output/input tubes, I wonder if any exist?
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  #2062  
Old 08-21-2016, 01:21 PM
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BearCityUSA BearCityUSA is offline
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Anyone here with experience with a 6N8S? I ordered 1 today to try as a driver tube. I hope it is worth the $.
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  #2063  
Old 08-21-2016, 03:39 PM
Bombadil Bombadil is offline
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How much did you pay for it? I've seen the Russian ones going for $2 each. I know the older, metal base ones are pricey.
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  #2064  
Old 08-21-2016, 03:44 PM
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BearCityUSA BearCityUSA is offline
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Quote:
Originally Posted by Bombadil View Post
How much did you pay for it? I've seen the Russian ones going for $2 each. I know the older, metal base ones are pricey.
Metal base, round holes in plates, quoted as NOS,... $75+shipping.
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  #2065  
Old 08-21-2016, 04:31 PM
FloridaBoy FloridaBoy is offline
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Quote:
Originally Posted by Comzee View Post
I'm thinking about the EML 5U4 or 274B for the rectifier.

I can't find any mesh alternatives to the output/input tubes, I wonder if any exist?
From another forum:

I have a pair of EML 5U4G tubes and use them from time to time. I also use NOS Brimar, GEC, Marconi 5U4G tubes. I find the EML 5U4G´s just as good as the NOS tubes, nice glow due to mesh. The only down side is their size, they are BIG!

Me? I'll pass. However, I have considered them.

EML does have mesh plate triodes. There are no mesh plate pentodes or any other mesh power tube that will work in these amps.
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  #2066  
Old 08-21-2016, 07:03 PM
CoGT3 CoGT3 is offline
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Quote:
Originally Posted by FloridaBoy View Post
I too like the Psvane tubes. The KT66z works well for me.

I have these CV181's: clear glass UK series, Psvane CV181-T Mark II bronze base and Shuguang Treasure CV181-Z white ceramic base. Not a dog in the bunch. I've had good luck with seller hsalience and Ice Lake Audio on the auction site. Be sure that you are getting premium series tubes.

Which mesh tubes are you considering? I bought 5 Full Music 274A, a 4 pin version, perforated plate rectifiers for a great price. There some posts here about the Sophia and EML tubes.
FB,
Could this be the same people?
amazon.com/sp?_encoding=UTF8&asin=B01E57OA72&isAmazonFulfille d=0&isCBA=&marketplaceID=ATVPDKIKX0DER&orderID=&se ller=AT9HPTJQR9BRT&tab=&vasStoreID

Looked on the auction site and found a previous seller that went by Salience HiFi but no recent activity. Quick google search turned up the Amazon web store. Looks like they may have moved there business from the auction site.

If so, I am gonna order one of the UK CV181 to try on my 45 SET.

PS: Still in FL? Im over on the Treasure Coast myself.

Last edited by jdandy; 08-21-2016 at 08:10 PM. Reason: active link to non-sponsor seller against forum rules
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  #2067  
Old 08-21-2016, 07:47 PM
Bombadil Bombadil is offline
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I can (I think) hear differences when I switch between 5Y3, 5V4, 5U4G/274B, 5U4GB (I think I hear a tiny difference between this and 5U4G, but wouldn't bet money on it in a blind comparison), and GZ34. But within rectifier tube types, say a vintage Sylvania 5U4G vs a vintage RCA 5U4G vs Tubestore Preferred 274B, I am not convinced I can hear any differences. Many tube amp owners say the same. So I've decided to not spend a lot of money on rectifier tubes. Dennis has told me that he considers the low cost JJ GZ34 to be very good.
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  #2068  
Old 08-21-2016, 07:56 PM
Bombadil Bombadil is offline
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However in my comparisons of 6SN7 tubes, I did consistently hear differences. I have 7 of them, and each one sounds a bit different, a couple of them a lot different. A couple have brash upper midranges which can be pretty aggressive. Another one is both recessed on highs and flabby/loose in the bass. The difference is immediate.

Despite their reputation as frequently being noisy tubes, I haven't found that to be the case with mine. I turned up the volume a long way with no signal and could not hear any hissing, pops, noise at all. And this is through Focal speakers with their detailed tweeters. No humming either.

I have found that I can "tailor" my sound a bit via my selection of 6SN7 tube.
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  #2069  
Old 08-21-2016, 09:05 PM
Bombadil Bombadil is offline
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Mistaken post. Please ignore.

Last edited by Bombadil; 08-21-2016 at 09:19 PM.
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  #2070  
Old 08-22-2016, 01:36 AM
Musica Amantem Musica Amantem is offline
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In my rig:

Inspire KT-88 SET amp with 20 Watt trannies and DACT step attenuator; LP-27a Inspire preamp with DACT Step attenuator; Yggdrasil DAC; Tekton Lore 2.0; Velodyne DLS 3500 R Subwoofer

Preferred combinations:

No. 1 (Best sound):

Decware Zbit (Balanced; No preamp);

Amp:
Super Radiotron 6SN7 GTA; Sophia Electric 274-B Mesh Plate; Russian 6P3S-E

No. 2:

Preamp:
GE 6BX7 GT, RCA Radiotron 80, Silvertone RCA 27*

Amp;
Super Radiotron 6SN7 GTA; Sophia Elecric 274-B Mesh Plate ; Russian 6P3S-E

No. 3

Preamp:
GE 6BX7 GT; RCA Radiotron 80; Silvertone RCA 27*

Amp:
Super Radiotron 6SN7 GTA; Sophia Electric 274-B Mesh Plate; Genalex GL KT88

No. 4

Preamp:
GE 6BX7 GT; RCA Radiotron 80; Silvertone RCA 27*

Amp:
Phillips JAN 6SL7 WGT; Sylvania 80 (Green); RCA 6V6 G ST

*Most of the time, the Silvertone Balloon-type RCA 56's in lieu of the equivalent 27's, produce the same results!

YMMV

Just for your reference, these are all the tube candidates at hand:

NOS Russian 6P3S-E
NOS RCA 6V6 G ST
NOS RCA 6V6 GT
NOS TungSol 6AR6WA w/Adptr
GENALEX Gold Lion KT-88
NOS Philco Globe-Type 27
NOS Philco 27
NOS RCA 27
NOS Sylvertone Globe-Type 56
NOS RCA-Radiotron 56
NOS Silvertone RCA 27
TungSol 6V6 GT

Sophia Electric 274-B, Octal
NOS RCA Radiotron 80
NOS Sylvania 80
NOS RCA Victor 80
NOS RCA Cunningham 80
NOS JAN Sylvania 80
NOS RAD-TEL 5Z3 (4-Pin)
NOS RCA 5Z3 (4-Pin)
NOS Brimar 5Z4 GY (Octal)
NOS Westinghouse-Holland 5AR4

NOS RCA 6SN7 GT
NOS Sylvania 6SN7 G/B
NOS Sylvania 6SN7 GTA
NOS Super Radiotron 6SN7 GTA
NOS GE 6SL7 GT
Tung-Sol 6SL7 GT
NOS Sylvania 6SL7 GT
NOS Phillips JAN 6SL7 WGT
NOS Tung-Sol 6SL7 GT
NOS GE 6BX7 GT (Preamp)
NOS JAN Phillips 5691
NOS 6N8PJ (Chinese)

Last edited by Musica Amantem; 08-22-2016 at 02:17 AM.
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