Probably harmonic distortion, likely low even orders. (2nd, 4th order and so on)  This is a type of distortion that is more common to softer and more flexible diaphragms of a curved design.  Also common to lower end drive motors with non symmetrical flux fields.   This type of distortion isn't...

If anyone with a set of Momentum cans wants to try these ebay cables, contact me and I'll send you a set free.  I have 2 of the short ones and 1 of the long one.  All have a 3.5mm jack with a 1/4" adapter.   I have two of the short ones because seller sent an extra after I claimed the first...

Small update.  I see why these ebay cables aren't working.  The push and turn pin locations are not allowing the plug to be pushed in all the way, and as a result the contacts aren't touching the right areas on the plug.   I have a picture but my new account status won't allow me to upload it...

Hey all, first post here.   Does anyone know if a cable described as being for the Momentum series will work with the 5X8 series?  I have a 558.   I picked up a shorter cable with a 1/8" stereo jack to be used with my 558 cans.  They "appear" to be similar, with what looks like the proper...