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PostPosted: 28 Feb 2009, 18:08 
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akhihar wrote:
My issue is that I haven't found an equivalent Edcor with 240V input. Could you suggest any other model? I am stuck with this tranny issue.

Any reason you are not using the Hammond?

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Projects: "Lagoon" - tube preamp with cathode follower | "retro-Oatley 6J6" - 6J6 push-pull headphone amp with OPTs | "retro-Hiraga" - Jean Hiraga Le Monster
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PostPosted: 28 Feb 2009, 18:16 
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Joined: 27 Feb 2009, 10:52
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Location: Edmonton, Canada
Mark,

I have no problem using Hammond, but 369JX rating is not enough, but I do not know any other model suitable for this purpose. There is 370CAX, which too has just 70mA. I am not sure it too is big enough. Can you suggest a suitable model number.

Thanks


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PostPosted: 28 Feb 2009, 18:31 
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akhihar wrote:
I have no problem using Hammond, but 369JX rating is not enough, but I do not know any other model suitable for this purpose. There is 370CAX, which too has just 70mA. I am not sure it too is big enough. Can you suggest a suitable model number.

The 369JX may just be a bit light on. But would probably do the job. The heaters would be more demanding than the plate current draw. The next model up should do it easy but you get a 5V winding too. Good if you want to use valve rec.Can't see any power trannies suitable from Edcor.

369JX 250-0-250 60mA 6.3v 2.5A X6 50 160.50 145.90
370CAX NEW 250-0-250 70mA 5v 2A, 6.3v 2.5A X8 50 200.50 182.30

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Projects: "Lagoon" - tube preamp with cathode follower | "retro-Oatley 6J6" - 6J6 push-pull headphone amp with OPTs | "retro-Hiraga" - Jean Hiraga Le Monster
Website: retro-thermionic


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PostPosted: 28 Feb 2009, 23:05 
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Location: Edmonton, Canada
Thanks Mark, I will go ahead with 370CAX.


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PostPosted: 01 Mar 2009, 01:03 
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akhihar wrote:
Thanks Mark, I will go ahead with 370CAX.

Its a little more than what you want but better more than less.

You should be pleased with your 6T9 I play mine most days I can't be stuffed kick-starting the big guns. With Fostex FE167E bookshelf speakers it is very good. I do litsen to mainly classical and jazz.

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Projects: "Lagoon" - tube preamp with cathode follower | "retro-Oatley 6J6" - 6J6 push-pull headphone amp with OPTs | "retro-Hiraga" - Jean Hiraga Le Monster
Website: retro-thermionic


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PostPosted: 06 Mar 2009, 16:29 
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Location: Edmonton, Canada
Mark,

How is the bass with 6T9 and Fostex speakers? I really like music with mid and upper bass. How does this combo perform in that region?


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PostPosted: 06 Mar 2009, 18:18 
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akhihar wrote:
How is the bass with 6T9 and Fostex speakers? I really like music with mid and upper bass. How does this combo perform in that region?

Is funny you mention that. I was just listening to the 6T9 Fostex combo and was quite pleased with the bass. It was articulate, full but no boominess and definitely not kick-ass. It will not put you through the wall but it is extended and tonal. I stood for 10mins listening and smiling. I know that is vague but that's how it effected me.

An amp builder friend who is into very heavy rock stuck his baddest CD in for the 6T9 to play. It had way over driven bass expecting the 6T9 to go into melt down. It played the "music" with ease and we were both impressed how loud we could play it with a real thumping bass. The 6T9 punched way above its weight.

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Projects: "Lagoon" - tube preamp with cathode follower | "retro-Oatley 6J6" - 6J6 push-pull headphone amp with OPTs | "retro-Hiraga" - Jean Hiraga Le Monster
Website: retro-thermionic


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PostPosted: 06 Mar 2009, 18:37 
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Joined: 27 Feb 2009, 10:52
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Location: Edmonton, Canada
Thanks Mark,

That is all I wanted to hear. I have ordered my stuff, so I should start working on it soon. I may pester you with some minor details, hope you do not mind.

The world seems to have run out of 6T9 tubes, so popular??????

I finally found a guy in Washigton area, who had brand new (NOS, I think) GE's, but he charged me a bit extra, $11 per piece. But, I think is it worth it.

He still has 3 pieces (one of the not yet tested, he claimed) left, so if any one is interested, I can provide the details.


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PostPosted: 06 Mar 2009, 20:20 
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I think the GEs are the best. I have RCAs which are also good. Get a pair for spare.

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Projects: "Lagoon" - tube preamp with cathode follower | "retro-Oatley 6J6" - 6J6 push-pull headphone amp with OPTs | "retro-Hiraga" - Jean Hiraga Le Monster
Website: retro-thermionic


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PostPosted: 06 Mar 2009, 22:33 
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Joined: 27 Feb 2009, 10:52
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Location: Edmonton, Canada
Mark,

One ignorant question. Does the power transformer or for that matter any part in the power supply affect the audio quality? I know the OT's play the major role in the Audio quality. But, does the power supply have any role at all, apart from hum due to bad filtering? Can there be a difference in audio quality between Full Wave rectifier and Bridge rectifier?

Thanks


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