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Rectifier tube for CSP2? (Read 22020 times)
Rivieraranch
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Re: Rectifier tube for CSP2?
Reply #15 - 08/10/10 at 03:01:04
 
I had a TABOO/CSP2/MG944 combination at home for a while and I had no problems with the bass. I used Sylvania 5U4GB rectifiers in both units.
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Hondo
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Re: Rectifier tube for CSP2?
Reply #16 - 11/10/10 at 15:55:13
 
I would like to thank jdm for his excellent information on CSP2 rectifier tubes.  I found the 5Y3GT Tung Sol JAN VT197A to be as described.  I listen primarily to classical music and liked its treble.  I puchased spare NOS and thought that it would be my standard tube.

I then tried a Sylvania 5Y3GT JAN VT197A. I prefer the treble response of the Sylvania.  So much, that I have purchased a lifetime supply+ of NOS Sylvanias.
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jdm
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Re: Rectifier tube for CSP2?
Reply #17 - 11/21/10 at 03:53:21
 
For a horse of a different color, you might try the very affordable 5R4GY or 5R4GYB.  I provides more punch than the 5Y3GT, but loses some of the airiness.  It has the punch and bass of the 5AR4 but more balanced.  Depending on your other tubes and headphones, they could be a viable option.
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drumsgreg
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Re: Rectifier tube for CSP2?
Reply #18 - 12/07/10 at 22:35:10
 
I use in both the CSP2 and the Taboo a Bendix 6106. It's sounds the best to me with my horns and cube .
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« Last Edit: 12/07/10 at 22:35:55 by drumsgreg »  
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Damien
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Re: Rectifier tube for CSP2?
Reply #19 - 09/16/11 at 20:17:09
 
I have a Taboo and a CSP2+. I currently have the two stock 5U4G tubes that came with the units and I have a pair of Silvertone 5Y3GT from the mid 1950's. the combination I prefer, with these tubes, is the 5U4G in the CSP2+ and a 5Y3GT in the Taboo.

In the CSP2+ I thought the 5Y3 had too much mids/high range emphasis. I didn't have a sub at the time. Just today I connected a sub to the mono port on my CSP2+ so I may have to revisit the 5Y3 in the preamp
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Lord Soth
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Re: Rectifier tube for CSP2?
Reply #20 - 10/16/11 at 11:15:06
 
Has anyone compared the Bendix 6106 vs a Tung Sol 5Y3G series?

I am looking for a "balanced" tube able to handle all types of music, e.g. Classical, modern Pop and Jazz. Anything except heavy metal. Smiley
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kingpin
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Re: Rectifier tube for CSP2?
Reply #21 - 01/30/12 at 15:32:20
 
I swapped in a Bendix 6106 to compare to the Amperex/Mullard GZ34 and it made a very nice improvement.  I figured the GZ34 would likely be the best, but there's a lot better treble and still very strong bass with the 6106.
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Lord Soth
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Re: Rectifier tube for CSP2?
Reply #22 - 01/31/12 at 13:20:39
 
Dear Kingpin,

Thanks for sharing that bit of info.

I did managed to get hold of the Bendix 6106 and Tung Sol 5Y3GT at the same time.

I am still burning in and enjoying the use of the Bendix 6106 at the moment. Yes, the bass is pretty good.

To make a fair comparison, I have decided to let both rectifiers be burned-in and utilised for at least 200hrs of playtime on the CSP2+.

I shall report back on my findings as soon as I hit the 200hrs mark for both rectifiers.

Regards,

Soth
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s1
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Re: Rectifier tube for CSP2?
Reply #23 - 05/10/12 at 05:26:13
 
Dear Lord Soth,

Any findings and which of the two did you prefer ?

Thank you.

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Lord Soth
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Re: Rectifier tube for CSP2?
Reply #24 - 05/11/12 at 14:52:29
 
Dear S1,

My take is that you won't regret using either one in your amp. Both are very good sonically.

The short answer is that I had to give up with this experiment due to the great number of variables involved.

After I found the design notes from Steve, http://www.decware.com/paper56.htm

I realised that it is not so easy to provide an objective review of rectifiers in the CSP2+.
Both the Bendix 6106 and Tung Sol 5Y3GT belong to the same 5Y3 family but the Bendix is indirectly heated and also causes a greater voltage drop.

Now, rolling the front tube already has a dramatic effect on the sound of the CSP2+.
So any scientific review would mean that I have to

1. Hold the input tube steady and change the rectifiers
We are basically comparing the sonics of the same input tube based on running it at different voltages.

Not everyone runs the same input tube so any input I provide would not be objective.

2. Change the Input tube and hold the rectifiers steady
The idea here is that I would have to try to isolate the differences in sonics due to the use of different input tubes vs the sonics caused by the use of the rectifiers.

BTW, if anyone out there actually made it so far in this post of mine  ;D, my conclusion is that both rectifiers are very good sonically!

I bought the Tung Sol 5Y3GT based on an earlier review made in this forum. That was before I found Steve's design notes mentioned above BTW.

I ended up using my Bendix 6106 in another tube amp because it worked very well there.

As for the Tung Sol 5Y3GT, it seemed to work very well sonically with whatever genre of music and input tubes I threw at it in the CSP2+!
So I decided to just leave it there.
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Lon
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Re: Rectifier tube for CSP2?
Reply #25 - 05/11/12 at 15:05:01
 
Very good observations Lord.

I am fixated on the use of 6N1P tubes in the CSP2 and the amps. I really love that tube and what it does with my music collection. I've used RCA 5Y3GT and 5U4GB rectifiers in the CSP2 and have come to truly appreciate the 5Y3GT, it seems to drive the 6N1P more accurately and with better dynamic contrast. It's a bit crisper, which is not necessarily a plus, but it provides a nice balance of detail and tonality.
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s1
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Re: Rectifier tube for CSP2?
Reply #26 - 05/11/12 at 17:46:36
 
Again many thanks Lord Soth,  for your invaluable inputs which I will most certainly follow. Smiley
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jameskk
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Re: Rectifier tube for CSP2?
Reply #27 - 06/01/12 at 11:21:12
 
I'd like to make one comment on this . do all the tube rolling you want . then go back to the tubes Steve put in the amp/preamp. you'll probably find you spent alot of money on backup tubes.........not nessessarily better tubes..............
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Lon
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Re: Rectifier tube for CSP2?
Reply #28 - 06/01/12 at 12:16:06
 
That's a good point. I run my CSP2 with all stock tubes, except for the rectifier (stock type, but RCA NOS) and that my 6N1P tubes are cryo'd. And my Torii with all stock tube types, with the exception that the input tubes are cryo'd, and the rectifiers are RCA NOS.

I've certainly done a LOT of tube-rolling, but have held steady with these for some time.
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« Last Edit: 06/01/12 at 12:24:40 by Lon »  

Decware:ERR,HR-1,ZP3,CSP2+(2),Torii Mk III, PS Audio PWT+PWD MkII,PowerBases,PPP,AC-12 pcs, Denon DBP-A100, Denon DCD-A100, Rega RP3 +TTPSU,white belt+Exact2, VooDoo Cable IC: Evo and UL, Mapleshade:Double Heiix Samsonv2+v3 and 4"platforms,Herbie's IsoCups+Tendft
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Lord Soth
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Re: Rectifier tube for CSP2?
Reply #29 - 06/02/12 at 17:43:30
 
I agree that Decware amps are built such that they sound very good even with stock tubes.

Yes, tube rolling means that one will end up with "backups" and "backups of backups" and so on....

But part of the fun (at least for me) of owning a tube amp is watching the little bulbs get tube-conditioned and then they blossom sonically after burn-in. To me, it is analogous to watching your little plants grow up and mature. It is also no different from parents watching their little "ones" grow up.

Even though I have spent enough $$$ to have had bought a couple of Decware amps instead, I don't regret it at all.
Maybe if my other half found out about the actual cost of owning a tube amp, I might actually regret it though! LOL

Each tube has different sonic characteristics. Tube-rolling allows one to get really familiar with the different pros and cons of each type of tube. A tube-roller will be able to tweak their audio system to get what they prefer should they ever get a new amp or change any part of their audio chain.

It's just plain FUN. As per the Mastercard commercials, the experience that comes from tube rolling is priceless. Smiley
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