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Stax Sigma Low Bais and Stax Sigma Pros - Page 13

post #181 of 472
Happy holidays to you too Scottsmrnyc and everyone else
post #182 of 472
I've barely even used my SR-X III (only owned for a few days), but since the topic has come up I would be curious to know how the pad mod is done. How are the original pads removed -- do you just need to pull on the silver ring and work it carefully out of the plastic outer housing? Do you remove the parts that mount the speaker to the headband first?

Does anyone have a link to a description of how to mount the new pads (I couldn't find it)? If not, Smeggy, would you mind expounding a little?
post #183 of 472
Quote:
Originally Posted by pdennis View Post
I've barely even used my SR-X III (only owned for a few days), but since the topic has come up I would be curious to know how the pad mod is done. How are the original pads removed -- do you just need to pull on the silver ring and work it carefully out of the plastic outer housing? Do you remove the parts that mount the speaker to the headband first?

Does anyone have a link to a description of how to mount the new pads (I couldn't find it)? If not, Smeggy, would you mind expounding a little?
The original pads are stuck onto the silver metal cover by adhesive to they just pull off. You remove the silver bit by removing the headband and unscrewing the two supports on each cup. Don't do it often or they will start to strip.

The way I mounted the pads was by cutting a piece of 3mm plywood in the right dimensions and stuck it to the silver bit with double sided adhesive, similar to the one Stax used to mount the drivers. You have to completely seal this junction or it will sound like crap. Then I put the SR-007 pads on the plywood. There were pictures of them in the Gallery but it hasn't been resurrected since the crash.
post #184 of 472
For my O2 pads, I undid the original headband mounting pin screws that hold the silver cups/pads in place and pulled them off as one piece leaving only the black plastic housing.

Cut some thin plywood into a donut with a 74mm inside diameter, 100mm outside diameter and press the ring onto the housing until flush with the driver housing end and seal with tape or whatever else you have. This minimizes the distance difference with the new pads.

I'll post more with pics later as I have to go out now.

EDIT:

Ok, I usually model things out before making them so here are some basic renders as I'd have to dismantle the phones to get descriptive photos.



post #185 of 472
Oh, and if done this way you can't use the original headband. I use the Gamma band and drilled holes at the back of the housings as you can see in the renders and this photo:



Hope this helps.
post #186 of 472
Terrific! Thanks so much for going through the trouble to post these. For the moment I'm having a great time learning to listen to the stock SR-X III, but I'll come back to this, I'm sure.
post #187 of 472
Thanks for the tip smeggy and spritzer.
I am looking into mounting SR-007 pads on one of my SR-X/MK3 pairs, and needed some directions on where to start.

SHould be fun!
post #188 of 472
Cool, I think the descriptions of my mod and Spritzers may help explain the disparity in sound. It reads like Spritzers were mounted on the end of the silver cups whereas mine are mounted around the casing putting Spritzers pads 3-4mm or so further out than mine and maybe less totally sealed as a result, the silver caps aren't airtight themselves being slip-on. If I read that correctly they would indeed sound different as mine fit very close to the original in that my ears are in contact with the driver mount.

If I misunderstood Spritzers description it'll just be a difference in sound preference. Either way, I really love the mod and my K1000s haven't had a listen since I did it.

As a MkII version I've designed a new adapter ring that I'll be sending off as a CAD file to a Rapid Prototype shop to get made from ABS which will fit and work better as the donut is offset and tapered to mount better and align the driver centrally inside the pad opening.



post #189 of 472
That's a clever idea -- would you consider having them do a run?
post #190 of 472
Quote:
Originally Posted by pdennis View Post
That's a clever idea -- would you consider having them do a run?
I still need to find the right place and see how much they want to charge, if it's not too expensive I may also do a full headband design just for the SR-X so it is both great sounding and very comfortable for those without gamma bands or who don't want to drill the housing. Never designed a full headband before but it should be fun.

If it works well I can put the CAD files up as a download so people can sent it to any RP house they prefer in their own state or country.
post #191 of 472
Quote:
Originally Posted by smeggy View Post
Cool, I think the descriptions of my mod and Spritzers may help explain the disparity in sound. It reads like Spritzers were mounted on the end of the silver cups whereas mine are mounted around the casing putting Spritzers pads 3-4mm or so further out than mine and maybe less totally sealed as a result, the silver caps aren't airtight themselves being slip-on. If I read that correctly they would indeed sound different as mine fit very close to the original in that my ears are in contact with the driver mount.

If I misunderstood Spritzers description it'll just be a difference in sound preference. Either way, I really love the mod and my K1000s haven't had a listen since I did it.
That could very well be it now that I've thought about it. Since I'm under a lot of pressure to continue my work on SR-X Mk3 Pro's I might as well make it a total transformation with new pads for extra comfort.

If you do get some ABS units made I'd love to get some. Cost isn't an issue...
post #192 of 472
I am all in for two ABS adapter rings for the SR-X/MK3 as well.
post #193 of 472
Thanks for the feedback guys. I'll probably get one set made, see how it works, adjust and then see how many people want them and get a batch made.

Do you think it may be worth posting this in the main Stax thread to see if there's any interest as I imagine bigger batches are more cost effective.
post #194 of 472
Quote:
Originally Posted by smeggy View Post
Thanks for the feedback guys. I'll probably get one set made, see how it works, adjust and then see how many people want them and get a batch made.

Do you think it may be worth posting this in the main Stax thread to see if there's any interest as I imagine bigger batches are more cost effective.
It's certainly worth a shot. The main problem are the Gamma headbands but a SR-202 unit should work.
post #195 of 472
I sent the file off to the prototyping shop for quotes, just have to wait and see what they say.
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