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STAX input voltage question

This is my very first thread posting, so please be tolerant if I sound stupid (but I really AM! lol). I acquired a STAX SRM-1/MK-2 and before turning it on, I want to make sure that the voltage is set to 117V. There is no jack in the back of the unit where voltage is switched between 100V, 117V, 220V, 240V. And, there is a sticker on the back that says "AC 100V Only". Can I obtain a jack to switch to 117V or am I already there or should I get a new hobby? I will likely have lots of dumb Stax questions but this one is paramount at this point. Thank you in advance for any advice.
ill
spritzer
8 posts
 
There are many different versions of the SRM-1 Mk2 and some have a voltage selector and some do not. It could even be hidden inside but you can never know with Stax. Since it says 100v only on the back then the amp is Japan spec and probably configured for 100v only. Pictures of the inside of the amp will help, especially of the bottom of the main PCB.

If you want to talk more about Stax then I suggest you hop over to www.head-fi.org as there are quite a few of us Stax-o-philes there.
ill OP
5 posts
 
Thanks so much Spritzer for the info and advice. You are my VERY FIRST thread/blog/forum (whatever you call this thing) contact/friend/advisor! I just signed up with head-fi. Yes, I will likely have more questions, as I seem to have been re-bitten by the STAX bug, after it lie dormant for over two decades.
spritzer
8 posts
 
Glad to help or bring you deeper into the headphone madness. I've got it pretty bad with more the 40 electrostatic headphones, some 7 amps and 20+ adapters.

I'll see you in the Stax thread on head-fi
ill OP
5 posts
 
Thanks much Spritzer. I hope I figured a way to better articulate my question.
I have two STAX SRM-1 Mk2 units. One is 100V for Japan and the other 117V for USA. The serial numbers are surprisingly close and the voltage selectors themselves look identical (but are wired slightly differently). The 100V unit has no jack in the voltage selector on the back. The 117V unit has the voltage selector jack in place and pointing to 117V. The 117V unit will not power up without the jack in place. I don't like the idea of trying to power up the 110V unit with the other jack inserted in it pointing to 117V. When I look inside, I see that there is a slight difference in the color coded wiring schemes (btw: these 2 units are amazingly close in serial number). Can the 110V unit be wired to the same color coding scheme as the 117V unit with expectations of it working (at 117V assuming that I find and insert another jack)? Or, are their other internal differences?
Another idea would be to permanently wire it for 117V without having to find another jack (IF there are no other internal differences)?
Can you tell that I am not a 'techi'?
My wife has a technical question for you also: "Will I get SHOCKED?" lol
Thanks much!
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