Phantom

It seems like a well engineered and interesting product and probably serves the target audience well enough (if you want 20Hz hifi at anything like a reasonable volume and impact in a package that small there aren't many options, let alone ones that will look nice on a pedestal in a posh living room).

I'd have more time for it if they didn't use such disengenuous marketing. It's not put up with at the low end (companies like Skytec and co with their 3000w PMPO carpet boxes), I think the only reason it's accepted at the high end is because generally the product is actually quite decent underneath all the fluff, due to the high end components, but the tactics aren't much different.

Actually. There's two versions. One with 750W peak and one with 3000W peak. Or so they say. They list the peak dB as 99dB and 105dB respectively. Seriously? No power compression at all from doubling power into the same speakers twice over? And lets just ignore the fact that 2x 7" woofers (not sure they're 7" but seems reasonable when considering the dimensions and deducing the woofer size from that) would have move about 30mm p-p for 99dB at 20hz. Doable maybe but the same drivers doing 105dB at 20hz. Not likely. At least not more than once as the old saying goes: "x-max can be several meters but only once".

Now, they also claim 750W or 3000W output. However, I don't really see any heat sink or substantial power supply which they say is built-in that could make that possible without overheating within minutes as even with class D output stages and SMPS you'd have somewhere about 300W of waste heat at 1500W RMS if we assume overall efficiency is second to none at 80% from AC plug to speaker terminals.

Btw, 99dB peak at 750W also means sensitivity is about 70dB/W/m.

I don't understand why they don't just give the real specs. Seems like a fairly decent product although I have no idea who could possibly have any use for 20Hz extension as few residential homes have large enough rooms that it is even possible to hear a 20Hz wave in.