January 25, 201114 yr Author Heard the black ones have more cooling, and a slightly larger gap for more power handiling.
January 26, 201114 yr Heard the black ones have more cooling, and a slightly larger gap for more power handiling.That cooling philosophy is backwards, you want a tight gap to increase air velocity.
January 26, 201114 yr a loose gap is to accommodate for daily scenarios so the coil has some room to wiggle when the subwoofer becomes non linear.
January 26, 201114 yr Author Yeah that makes sense cause I read somewhere the black ones where built for daily. Hence the better cooling and wider gap. Just trying to find out if anyone knows for sure. Seems like no one has even really heard of the black ones.
January 30, 201114 yr I've always wondered this myself.I know the chrome are the original design, and the black ones came after US Amps bought RE.
January 31, 201114 yr Black motors had the gap enlarged by less than .25 mm to help with coil scrub. And that was only on the T-Yoke. The MT will still take mega power and is now daily usable. We are currently working on a new 4 inch coil MT.
February 14, 201114 yr Author Black motors had the gap enlarged by less than .25 mm to help with coil scrub. And that was only on the T-Yoke. The MT will still take mega power and is now daily usable. We are currently working on a new 4 inch coil MT.Thanks for the reply. I am waiting on my recone from David at PSI right now, then my builder is going to build me a MT/PSI Hybrid 12D1.4 to run off my AP18001D in this:Can't fuckin wait!
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