Did some heavier abuse testing yesterday.
Ended up breaking the solder joint from the tinsel lead wires to voice coil lead at the neck joint on one side -- but did not actually break the neck joint or thermal the coil. Had it up around 550-700 watts clamped at the point of my testing before that failure occurred.
These samples have tied-on leads and actually the "floating" leads would have prevented this type of failure as it was a result of excessive forward stroke tugging the tied lead out of the hole it passed through -- and of course I was doing 550-700 free air on a 300-watt rated driver anyway so I can't say I am disappointing
Either way I have some Rev.2 prototypes in the works to address the high Qts and a few other minor things I want to improve. I have been spending alot of time as well making sure I can still offer them for the $60-70 range or VERY close to it