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Vintage Stax repair and maintenance - Page 2

post #16 of 168

A SB box only provides bias when the music is playing (since it leaches AC off the music signal to drive the bias circuit) so for this stuff a AC powered box is a better option. 

post #17 of 168
Thread Starter 

Is there something I can do/check for the coating and corrosion problem in the drivers ? Like opening and cleaning them...

Same question for the SRD-7 ? I'd like to get them in top shape... And honestly, I'm a little curious to look inside ;-)

post #18 of 168
234 234

Forgot about these,they arrived from Osaka,Japan to Brampton,Canada in 12 days (today).
Had no idea these pads are installed with double sided adhesive rings.
Obviously,not like the originals,which have cloth underneath if the leather has worn off...
post #19 of 168

5aces I'm not so sure that's a bad thing. In the sign biz we use tapes and some of them are really expensive, some are very high bond; commonly called VHB. Many are re-positionable and only setup after an hour. I suspect this is not the case with yours and they are instant bond. I think I'd read that many of the lambda format also used this tape for the pads.

post #20 of 168
Thread Starter 

Bad caps in the SRD-7 : What's the effect ?

 

From this,

http://www.analogrules.com/badcaps.html

 

I understand that there's two bad caps in my SRD-7.

 

Should I change them ? Could it be the reason SQ and bass is lacking from my SR-X Mk3 ?

 

Thank you,

post #21 of 168


I have an srd-4 if you'd like to borrow it? I bought it at auction along with the sr30, the headphones had a channel imbalance. I got a refund and the seller asked me to "toss" them, I never tested the energizer, I could. Black model not silver and black.
 

 

post #22 of 168

I have a pair of Stax Sigma Pros that hasn't worked correctly.  I opened up the right driver box and saw that the plastic covering to the driver unit was ripped and that there were are these particles/dirt/sand etc on it.  When working, the right ear box seemed lower in volume that the left.  I got some air in a can and blew out the particles and tried to use some thin plastic to replace the original ripped plastic.  I also cleaned and re soldered the wire connections in that ear box.  It did not work as well.  The unit lies in my closet just accumulating dust.  I have given up on it.  Any suggestions? 

post #23 of 168
Thread Starter 

Thanks for your offer ri-toast. Maybe I'm mistaken, but I tought the SRD-4 was made for electret only...

 

I'm already shopping for a new adapter and I'll change the caps on my SRD-7 anyway. So we'll see...

post #24 of 168

sorry i thought you had the 6 pin non-pro version SR-X Mk3

post #25 of 168
Thread Starter 

There's a recent comment in the Stax thread on how to re coat them. I don't know what's the problem, but you seem to have nothing to loose...
 

Quote:
Originally Posted by Scottsmrnyc View Post

I have a pair of Stax Sigma Pros that hasn't worked correctly.  I opened up the right driver box and saw that the plastic covering to the driver unit was ripped and that there were are these particles/dirt/sand etc on it.  When working, the right ear box seemed lower in volume that the left.  I got some air in a can and blew out the particles and tried to use some thin plastic to replace the original ripped plastic.  I also cleaned and re soldered the wire connections in that ear box.  It did not work as well.  The unit lies in my closet just accumulating dust.  I have given up on it.  Any suggestions? 



 

post #26 of 168
Thread Starter 

Finally, I took the plunge and replaced the two blue caps in the SRD-7. I'm not sure if it was an improvement, so it's a minor effect at best. I also replaced the SR-X/Mk3 earpads with something better than my homemade prototypes... Night and day ! Now I can stop messing with my old timers and start listening seriously. These SR-X are mean. You can hear everything, especially what shouldn't be there... I like it that way !
 

Quote:
Originally Posted by Headdie View Post

Bad caps in the SRD-7 : What's the effect ?

 

From this,

http://www.analogrules.com/badcaps.html

 

I understand that there's two bad caps in my SRD-7.

 

Should I change them ? Could it be the reason SQ and bass is lacking from my SR-X Mk3 ?

 

Thank you,



 

post #27 of 168
Thread Starter 

How to properly wash Lambda earpseakers ?

 

I've recently got the original SR-Lambda normal bias. They sound wonderful, but smell bad. It looks like they lived in a smoking environment...

 

So I began to wash them part by part. Everything turn yellow when I wipe the dirt. Now, what can I do with the earpads ?

 

It looks like leather, but could also be synthetic... Should I use a leather cleaner, a magical product like 303 or something else...

 

Your suggestions are more than welcome.

 

Thanks in advance,

post #28 of 168

Buy new earpads.

post #29 of 168
Thread Starter 

Later maybe. For now, I've cleaned the pads with a special leather cleaner. Then I applied some 303. The finish is very good so far.

Next step, I hope that baking soda is gonna get rid of the smell...
 

Quote:
Originally Posted by livewire View Post

Buy new earpads.



 

post #30 of 168
Thread Starter 

One month later, the smell is almost gone with baking soda in the cabinet.

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