The Stax Thread III

[joseph69]

  Don't panic. Now contact PJ and get that 007A. It is a great phone. My Black 2.5 sounded way behind, it is like another model (lower SQ) just plain slow and bloomy.
Keep us posted.
On warranty,. obviously no guarantee, but the 007 has been manufactured for years, so it has less risk factor. I would not worry too much.

  Congrats. Now get the 007A from PJ.

  Get the 007A from PJ.... Time's a wasting.......   

Thank you for the advise, I'll keep you posted.

 

[astrostar59]

  Thank you for the advise, I'll keep you posted.

Please do. My dealings with Kaneda were great, really quick to respond via email, item shipped as promised, arrived in a sealed Stax case. Only difference is the warranty card sticker on the box says Japan only. Having said that, I know of some where if they had an issue, PJ sorted it out regardless of location.
 
The current 007A is a bargain IMO. It i now not far behind the 009 and has shrugged off the sluggish sound it had with the older versions. These comparisons are with a Stax 717 amp and a KGSShv. Out of the 717 they still sounded great.

 

[joseph69]

  Please do. My dealings with Kaneda were great, really quick to respond via email, item shipped as promised, arrived in a sealed Stax case. Only difference is the warranty card sticker on the box says Japan only. Having said that, I know of some where if they had an issue, PJ sorted it out regardless of location.
The current 007A is a bargain IMO. It i now not far behind the 009 and has shrugged off the sluggish sound it had with the older versions. These comparisons are with a Stax 717 amp and a KGSShv. Out of the 717 they still sounded great.

Yes, I've already purchased the 009 from PJ and everything went as smooth as could be!
They are also very quick to respond to me e-mails also. I'm not worried one bit about the warranty as I do believe they would resolve any issues if needed.

 

[Hauge]

Hi!

As a new Stax electrostatic earspeaker owner, i'm sorry if i repeat a former question.

A couple of weeks ago i stumbled over a set of Lambda (normal bias/1979-84) with SRD-6/SB.
- And I'm very pleased with them. But they need to be played a little louder, than my ears want, to open up.
I'm pretty sure its down to the way the bios is generated, and the efficiency of the driver transformers.

Thus, i'we been thinking if there's some interesting diy tube projects, that are "worth going after"?
I have several tubes laying around, including 12B4, 6N6P-E, 6080 and more...

Best regards
And thank You very much for any thoughts and advises!
Tonni

 

[VGoghs earfrmsc]

have you included the DIY section with this question?

 

[bearFNF]

Hi!


As a new Stax electrostatic earspeaker owner, i'm sorry if i repeat a former question.


A couple of weeks ago i stumbled over a set of Lambda (normal bias/1979-84) with SRD-6/SB.

- And I'm very pleased with them. But they need to be played a little louder, than my ears want, to open up.

I'm pretty sure its down to the way the bios is generated, and the efficiency of the driver transformers.


Thus, i'we been thinking if there's some interesting diy tube projects, that are "worth going after"?

I have several tubes laying around, including 12B4, 6N6P-E, 6080 and more...


Best regards

And thank You very much for any thoughts and advises!

Tonni

If the earspeakers sat unused for a while it may take some time to get them charged.
When I took mine out of storage I had to run them for a few days before they started sounding like I remembered them to sound back in the 80s when I bought them. Even then it takes a while and higher volume to get them going for a listening session. I use an SRD7/SB or a Woo Wee with mine. The WEE seems to get them going faster. It may also depend on the amp you are using.

Read this thread for more info,
http://www.head-fi.org/t/588716/vintage-stax-repair-and-maintenance

 

[Hauge]

No i haven't. "VGoghs"
- As i thought this were where the specialists were...
But i surely will do...  Thanks for the tip!

 

[Hauge]

If the earspeakers sat unused for a while it may take some time to get them charged.
When I took mine out of storage I had to run them for a few days before they started sounding like I remembered them to sound back in the 80s when I bought them. Even then it takes a while and higher volume to get them going for a listening session. I use an SRD7/SB or a Woo Wee with mine. The WEE seems to get them going faster. It may also depend on the amp you are using.

Read this thread for more info,
http://www.head-fi.org/t/588716/vintage-stax-repair-and-maintenance

The Lambda's had been playing for around tree full days, night and day. But the problem remains the same "BearFNF". But also my ears are very sensitive and starts to hurt around 95 - 98 dB SPL. Therefore a setup with a active amp seemed to be a great solution...
I have tried both a Leak Stereo 20 and a Kenwood 7090 driving the SRD-6/SB. And thou liking the sound, it became to loud before opening. Today i were given a SRD-7 (mains powered), and probably will have it in the mail at the end of the week. Maybe that will do the trick? Else ill go the direct tube driven way.

But thank You wery much for the link to the maintenance thread. I surely will have a look at it!

By the way. The system its going to work with consist of:
Thorens 320 / Goldring 1022 / DaliRIAA
Thorens 124 / Ortofon AS212 / AT-OC9 / diy ARC PH-3
Nad S100
Marantz CD 63 SE / LClock / AD op-amps
Leak Stereo 20
And Snell E/III, AN/J or Lowther PM6A in SuperACE horns.

Not High-end but i like it a lot!!!

 

 

[JimL11]

  Hi!

As a new Stax electrostatic earspeaker owner, i'm sorry if i repeat a former question.

A couple of weeks ago i stumbled over a set of Lambda (normal bias/1979-84) with SRD-6/SB.
- And I'm very pleased with them. But they need to be played a little louder, than my ears want, to open up.
I'm pretty sure its down to the way the bios is generated, and the efficiency of the driver transformers.

Thus, i'we been thinking if there's some interesting diy tube projects, that are "worth going after"?
I have several tubes laying around, including 12B4, 6N6P-E, 6080 and more...

Best regards
And thank You very much for any thoughts and advises!
Tonni

As it turns out, I just published a DIY tube project in AudioXpress Nov and Dec 2015.  It is a modification/updating of the Stax SRX DIY electrostatic headphone amp originally published in the 70s, adding solid state current sinks and loads to improve balance and efficiency.  It uses 12AT7 and 6SN7GTA/B tubes.  You can do a Google search for AudioXpress Nov 2015 or Dec 2015 for more details, or "SRX revisited."
 
One person who built it felt it was comparable in sonic quality to other DIY amps he built like the Gilmore KGSSHV and Gilmore Megatron, and superior to the DIY Egmont.

 

[Judgment]

Would it be possible to convert the Japanese Stax SRM-727II 100 Volt model to operate on 230 Volt mains outlet? Not scared of doing soldering. Does the frequency difference 50/60hz make any difference?

 

[wuwhere]

  Would it be possible to convert the Japanese Stax SRM-727II 100 Volt model to operate on 230 Volt mains outlet? Not scared of doing soldering. Does the frequency difference 50/60hz make any difference?

 
Why not just use a transformer?

 

[Judgment]

That might actually be a good idea. Saves a lot of trouble.. but I still wonder if the mains frequency makes any difference.
 
Transformers aren't too expensive either: http://www.ebay.com/itm/300W-AC-AC-Power-Converter-300-Watt-220V-230V-240V-Step-Down-100V-110V-120V/261293848245?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20131003132420%26meid%3Db4a23e7c962f4bcf8e4f7b25622bbdc0%26pid%3D100005%26rk%3D5%26rkt%3D6%26sd%3D271284293340

 

[wuwhere]

That's just the voltage carrier frequency which most transformers can handle unless you have a motor that only works at a certain frequency.

 

[Hauge]

Above. Except in cases where the transformers are really marginal, and thus runs wery hot, it can be a theoretical problem to go from 60 to 50 Hz.
The other way around no worry...

 

[Hauge]

 
As it turns out, I just published a DIY tube project in AudioXpress Nov and Dec 2015.  It is a modification/updating of the Stax SRX DIY electrostatic headphone amp originally published in the 70s, adding solid state current sinks and loads to improve balance and efficiency.  It uses 12AT7 and 6SN7GTA/B tubes.  You can do a Google search for AudioXpress Nov 2015 or Dec 2015 for more details, or "SRX revisited."
 
One person who built it felt it was comparable in sonic quality to other DIY amps he built like the Gilmore KGSSHV and Gilmore Megatron, and superior to the DIY Egmont.

Thanks JimL11!

Ill se if i can find a place here in Denmark, where they sell audioXpress! - As the holidays are just a month away, its not time for a subscription right now...