That measurement was quite in error. Scan Speak has always set the standard in our industry for publishing dead-accurate specs for their products - so much so that guys use their tweeter output curves as a reference from which to calibrate the sensitivity settings on their analyzers. Here are Scan Speak's curves for the Shearwater woofer:
View attachment 7882
You can see that in order to get down to 84.5dB something like 4 or 5dB would have needed to go missing. Since the entire low pass filter consists of a single 14 ga. 1.25mH inductor that simply ain't possible. Even so, that inductor would have gotten awfully hot trying to dissipate more than half of the power coming in at the terminals.
Let's just say that the guy taking those measurements should have heard a loud "alarm bell" going off in his head.
As I recall, in that same issue the same guy "discovered" that one of Jim Thiel's new babies had about 3 or 4dB MORE sensitivity than Jim had claimed. Well - Jim, may that sweet man rest in peace, was a brilliant engineer; it was simply not possible that he had built a speaker that could actually do twice as much with a volt as he thought it could. Not even remotely possible.
So.....let's just say that the guy taking those measurements should have heard a loud "alarm bell" going off in his head.
I'll say it again: reviews are for entertainment not for information. I also recall that the edited version of that review had barely a trace of the enthusiasm contained in the original draft. Hmmmm. Let's just say that, to this day, Shearwaters are at the heart of that writer's system.
Early HOTROD Shearwaters were hooked up with Cardas litz. Later ones bore Tara RSC.
The HOTROD series came about because our retailers were demanding it. And because our customers kept asking for special builds using their pet parts - some were good, others not so much, and a few were just awful. So we decided to standardize. Of course it killed sales of the basic units - which was just fine with us. At the beginning I thought we needed to hit lower price points, but that proved not to be the case, guys were willing to pay a little more for the step up in quality. It did create an unwieldy situation for a while, our later efforts were all built to the HR standard.
Speaker cable? I'm not a good source for the current dope on cable. I used to just get heavy Cardas and call it a day.