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Sisterray

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Everything posted by Sisterray

  1. Sisterray

    The Headcase Stax thread

    It is, indeed, a matter of value. Then it comes down to whether an amp that is nearly 25 years old is worth updating. I am concerned about components failing that I am not qualified to troubleshoot & replace. Recapping & rebiasing are things I can do, but I think a new amp is in order. Thnaks for putting things into perspective.
  2. Sisterray

    The Headcase Stax thread

    I’m in a quandary over the next amplifier step. My SRM-1/Mk2 is no younger than 24 years, because I believe production was ended in 1995. (It has two probias sockets, if that helps dating.) It hasn’t hasn’t been recapped & rebiased. I’m considering a 47-step Goldpoint for it & new RCA jackets. If I have the work done, it’ll be over $500. The SRM came out of a studio & cost around $450. It sounds great & has been very reliable for the six months I’ve had it. It drives SR-207 & SR-507 stats. The three options are: 1) Refurb the SRM-1/Mk2; 2) Buy a new SRM-353X; and, 3) Buy a transformer box, buy a Class D Audio brand Mini Amp board (which I’ve used), and use my Goldpoint attenuator. 2) seems more reasonable over 1) since the 353X is new- production. Which sounds better? I would have put about $1000 USD into an amp that is at least 24 years old while a new SRM-353X is about $1000 itself. 3) is attractive since I’d be customizing the rig from the ground-up. I would buy one of Spritzer’s SRD-7 boxes. This rig would cost me about $800 to $900. Importantly, I don’t listen to speakers anymore, so the Class D amp would be used exclusively for the Stax. What direction should I pursue?
  3. Sisterray

    The Headcase Stax thread

    How would the SRM-1/Mk2 likely compare to the Stax & Moljinir transformer boxes when driven by current Class D amps?
  4. Sisterray

    The Headcase Stax thread

    Why a difference?
  5. Sisterray

    The Headcase Stax thread

    Is there a problem with plugging stats into a live amp or unplugging from a live amp, as opposed to plugging into & unplugging from an unpowered amp? I have made those mistakes a couple of times.
  6. Sisterray

    The Headcase Stax thread

    Is an acrylic omega-style stand for my Stax SR-207 earspeakers a no-no because of static buildup? I just bought it but haven’t received it yet. I would use a dust over.
  7. Sisterray

    The Headcase Stax thread

    Talking about the pads: Given the price for Stax earspeakers, I was shocked to learn that the pads are affixed using adhesive sheets. I expected something more “mechanical” than adhesion. One pad is already peeling away a little bit.
  8. Sisterray

    The Headcase Stax thread

    I came across a video on YouTube on fitting very different, muff-style pads to the 207, using adhesive sheets & printed adaptor plates. Worthwhile? I would expect the sound to be quite different after that mod. On my 207 pair, the pad profile appears to be angled. I’m considering using 507 pads because they are leather. Those seems to be flat. Would I alter the sound significantly by using the 507 pads? Those adaptor plates feature ports. Do they really make a difference in the bass response? I’m very satisfied with bass reproduction as they are. Does it become muddy or boomy due to the ports? I don’t understand how they work since the drivers are completely “open”. What’s being vented?
  9. Sisterray

    The Headcase Stax thread

    The SRM-1/Mk-2 has been played everyday for two weeks, and I am very pleased with it. Definitely a more solid sound than that of the SRM-252S. I need to get ready to do the recapping. I am considering replacing that weird & frustrating volume control with a Goldpoint 47-position attenuator, however, I do not know whether it will fit.
  10. The title says it all. My SRM-252S seems to be failing, indicated by hum. (It’s the 120V version.) I’ve been discussing it on the Stax thread in Headphones. While I lack the expertise & all of the tools to troubleshoot the amp, I do possess the tools & enough skill to refurb a working SRM-1/Mk-2, a unit I’d get from eBay. I understand the primary work is to replace the caps. Any experience?
  11. Sisterray

    Refurbing a Stax SRM-1/Mk-2

    I did buy an SRM-1/Mk-2 through eBay a few days ago. I’ve subsequently come across a recapping procedure, so I plan on doing that in the near future. It’s a Model C, and it came out of a studio. It has two pro bias sockets.
  12. Sisterray

    The Headcase Stax thread

    I just bought that unit I mentioned earlier. $400. I expect to do work on it, especially recapping.
  13. Sisterray

    The Headcase Stax thread

    I opened it up, and everything looked clean. I was hoping to see something obviously wrong, but there wasn’t anything that looked scorched or singed. I lack the expertise to go probing. I’m a kit builder & modder, not a troubleshooter.
  14. Sisterray

    The Headcase Stax thread

    The wall wart says 120V. I presume the screws are beneath the rubber feet. They are stuck-on with tough adhesive. That SRM-1/Mk-2 is again looking attractive.
  15. Sisterray

    The Headcase Stax thread

    The saga continues... All seemed fine today until I turned off the amp & pulled the plug from the jack. The hum rose quickly in level & changed in timbre. It then disappeared as the plug left the jack. I could not hear any residual hum in the earspeakers after that. It seems to be an amp issue, for sure. Is it failing?
  16. Sisterray

    The Headcase Stax thread

    More on a better amp: Would moving from an SRS-252S to an STM-1/Mk-2 be an improvement, since the 252S is a much newer amp?
  17. Sisterray

    The Headcase Stax thread

    I tried my Onkyo with the stats this afternoon. The hum developed, but weakly, and then disappeared. I couldn’t hear it when I switched back to the Sony changer. A mystery.
  18. Sisterray

    The Headcase Stax thread

    I’ll do that tonight. I’m not sure a 25-year-plus amp is worth the cost of purchase & refurbishment. That could end-up being $700-$800, if professionally done. I can get an SRM-353X for around $1K, made for North American line voltage, from Elusive Disc.
  19. Sisterray

    The Headcase Stax thread

    It’s an eBay listing. He wants $479, plus $20 for shipping. That combo is too expensive for me.
  20. Sisterray

    The Headcase Stax thread

    Is $400 a good deal on a “C” model SRM-1/Mk-2 with dual pro bias sockets? It was pulled from a studio. I don’t know its age. If my offer is refused, How high should I go?
  21. Sisterray

    The Headcase Stax thread

    Beautiful work! Your clone reminds me that I’m looking for some DIY approach to replacing the “headgear” of my 207 earspeakers. Outstanding transducers, cheap-looking execution. I often fear I’m going to break something by simply handling them. I don’t want to change the transducer housings, just everything else. The pads will be changed to the leather 507 pads in a couple of months.
  22. Sisterray

    The Headcase Stax thread

    That’s interesting. I might hold out for a T1. There isn’t one on eBay right now that’s in North America. I’ve seen the listing for the Stax amp service. It does seem mandatory after so many years. Getting back to the original problem... I noticed the hum only after switching from an Onkyo C-7030 single-disc player to a Sony jukebox. The Sony has a plastic cowling or cover on the back, presumably with the power supply inside. (I haven’t popped the covers, yet.) I had my cables draped over it when I noticed the hum. So after rearranging the amp & cables, the hum has lessened, but it’s still there. About two-and-half feet separate the amp from the power supply section of the Sony now.
  23. Sisterray

    The Headcase Stax thread

    Good SRM-1/Mk-2 units pop up on eBay frequently.
  24. Sisterray

    The Headcase Stax thread

    I’ll have to check whether the unit can be grounded. I have rearranged the amp & cables, so we’ll see this afternoon. Regarding a new amp: Would an SRM -1/MK-2 be a good choice? How about a T1?
  25. Sisterray

    The Headcase Stax thread

    No fluorescent lighting, but there might an issue with the power supply of the Sony (a 400 disc changer) affecting the amp. It sits on top of the changer, and the various cables run parallel to each other. I’ll have to rearrange them & move the amp. However, I don’t think that would explain the change in the loudness of the hum as I move my head.
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