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Stax Sigma Low Bais and Stax Sigma Pros - Page 23

post #331 of 472
Quote:
Originally Posted by John Buchanan View Post
I presume "wired out of phase" means that they were both wired with the same inverted absolute phase, which considering that they are firing from the opposite side of the transducer (compared with the Lambda), the two inversions should cancel. I'm kinda hoping that they didn't wire them out of phase with each other!!
That's exactly what I meant. Stax did play with this a bit as some of the SR-# line was wired with inverted phase, presumably to bounce sounds off the baffle.
post #332 of 472
Quote:
Originally Posted by spritzer View Post
That's exactly what I meant. Stax did play with this a bit as some of the SR-# line was wired with inverted phase, presumably to bounce sounds off the baffle.
I need to remember this. Very interesting information. I never thought about phase at all.
post #333 of 472
Quote:
Originally Posted by Faust2D View Post
I need to remember this. Very interesting information. I never thought about phase at all.
Noob!!!
post #334 of 472
Quote:
Originally Posted by spritzer View Post
Noob!!!
I need to get Sigma Pro and Omega to overcome my n00b status
post #335 of 472
Keep the posts coming!
I am really interested in reading about your Sigma (Pro, 404, ..) impressions. Especially since I have never heard one myself...
post #336 of 472
Quote:
Originally Posted by Faust2D View Post
I need to get Sigma Pro and Omega to overcome my n00b status
Well duh!! Two Omegas are better then one though and so on...
post #337 of 472
So we have two phase inversions - the driver back to front (compared with a lambda) and the phase inversion as the sound is reflected off the damping material. Why did they feel the need to invert the wiring phase as well?
post #338 of 472
Quote:
Originally Posted by John Buchanan View Post
So we have two phase inversions - the driver back to front (compared with a lambda) and the phase inversion as the sound is reflected off the damping material. Why did they feel the need to invert the wiring phase as well?
The drivers are indeed front to back compared to a Lambda but that doesn't matter as they are dipoles and the sides are identical. That's why Stax wired them just like a Lambda which in this case inverts the phase.
post #339 of 472
Thanks Birgir. I understand it now.
post #340 of 472
To further expand on the SR-Sigma drivers, they are indeed very simple beasts. I should know as I've had the unfortunate pleasure of restoring one which split open. The diaphragm is mounted to two brass rings and the stators (perforated copper) are encased in a plastic mold which it then glued to the brass rings on either side. Add spacers for the dust covers and the metal protection grill and the drivers are complete.
post #341 of 472
I am using this info in the Sigma section of the wiki
post #342 of 472
Quote:
Originally Posted by Faust2D View Post
I am using this info in the Sigma section of the wiki
I was going to put it there anyway...
post #343 of 472
Thread Starter 
Hi everyone. It's been a while. Does anyone know anything about the stax SRM X Pro Portable amp/driver? How does it compare to the SRD X Pro Amp/Driver? Any information will be greatly appreciated?
Scottsmrnyc
post #344 of 472
Quote:
Originally Posted by Scottsmrnyc View Post
Hi everyone. It's been a while. Does anyone know anything about the stax SRM X Pro Portable amp/driver? How does it compare to the SRD X Pro Amp/Driver? Any information will be greatly appreciated?
Scottsmrnyc
The SRM-X was the precursor to the SRM-Xh which I had. Not a very good amp and will never push the Sigma's.
post #345 of 472
Thread Starter 
Thanks for responding. Scottsmrnyc
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