The push-pull configuration has been shown to reduce distortion, incorporated by very well respected people like Dr. Linkwitz, EAW, etc. Any mechanical engineer will confirm that the heat exchanger provides much better cooling than air venting alone. This, combined with the fact that I went to great efforts to make the cooling plug design compatible with the LABhorn makes your discounting of these things particularly irresponsible, in my opinion. It has been shown to be very effective, and I think your going to such great lengths to discount it is purely ego driven. The fact is that lots of people have suffered from LAB12 failures that immediately stopped once they installed cooling plugs.
On a personal level, I'm about sick of this crap from you, Tom. You're a smart guy, and have done a lot of good work. So why you've acted this way is beyond me. You often describe yourself and the companies you work with as "Davids" set upon by industry "Goliaths". But where you and I have been involved, you're the one that has been the predatory "Goliath" and I think you should look at that.
Look at the history - A few years back, I ran a little DIY business that sprung out of my passion for audio, and you were the main guy at ServoDrive. We really operated on two different levels. You sold commercial products. I provided free loudspeaker plans and discussed them with hobbyists.
I had several good speakers with plans available at that time, and I still do. My speakers were popular, sounded good and people were satisfied. I still have those same speakers available, and people still love them.
You and Seaton started promoting the Unity over on my forum, and barraged us with several posts about it. I haven't followed your progress with the Unity since then, but frankly, that version sucked. It had a huge 15dB spiked dip, obviously a crossover anomaly about an octave above the crossover frequency. Summing was bad, and I said so. You attacked other loudspeakers, but your own loudspeaker sucked. The design probably had potential, and you were proud and all, that's fine. But the implementation sucked and you shouldn't have attacked people when your own product was that poor.
You similarly championed the LABhorn, sort of forcing it down people's throats. Most of the guys you were talking to ran tiny power tube amps. They didn't need or want something like the LABhorn. But you railroaded that thing and some people took offense. Frankly, the most vocal opponents to the LABhorn were Edgarhorn supporters, not Pi Speakers enthusiasts.
Seems you've never let go of those controversies. I've tried to move on and treat you like a gentleman, but you seem bent on keeping a fight going. It is so bad that you criticize things you know better, things that you know work well. The push-pull configuration reduces distortion and you know it. But instead of saying that, you criticize it because you are still hanging on to sour grapes. That does a disservice to all those that look up to you.
And the worse thing is how you've discounted the cooling plug. On that matter, I'm not sure if you know it works and just discount it out of spite, or if you really don't understand heat transfer. You're a smart guy, but you're not a mechanical engineer. It is possible that you don't know how much effect black body radiation has on the heat transfer inside the motor. It's not really your field of expertise, and even if you get a patent on something, that doesn't make you expert in the field. It just means you've done something (for right or wrong) that no one else paid the PTO to register as being novel. But whether or not you understand the significance of this, you could have tested it and your discounting it without testing is extremely irresponsible.
Next time you post something about the cooling plug, consider running it by a degreed mechanical engineer. People look up to you here, and you've promoted yourself as a "Myth Buster". So I'd appreciate it if you'd stop spreading so many myths of your own.