What a load of BS! And a tremendous waste of energy and material.
The woofer cone's mass is almost a pound? And it's milled from a 66lb. billet? That makes no sense.
Some of the statements made by the company are just plain lies.
Listen, I get the bit about making the cabinets as acoustically inert as possible.
Just so you know, that bit about eliminating standing waves in the sub cabinet is also BS. You can't have a standing wave inside a sub cabinet unless that sub cabinet is the size of a room. For a cabinet this size, you can have standing waves around 500Hz or so, but not in in the frequencies around 50Hz or below. It's too small... that's the just elementary physics of sound waves
The ideal subwoofer has huge radiating surfaces that have no mass and unlimited, linear excursion and it weighs next to nothing. Of course, that's not possible so dealing with what is possible with a "hyper-sub" in the real world, one of the best designs is Paradigm's Persona Sub.
The Persona has 6 eight inch drivers, almost 2kW of power, the cabinet is designed to be vibration canceling and it has ARC room correction. It's flat to 19Hz and with room gain can extend to 12Hz. Those 8" drivers have a fraction of the moving mass of this YG monstrosity so their ability to start and stop is a magnitude or more greater than a 1lb., 21 inch sub driver.
DSP is great, but it can't solve the problems that a 1lb. sub driver brings to a design.
Also, each of these subs weighs almost 250lbs. So, to make the stacked super-sub, you need a forklift or a crane. Or 4 people that are in awesome shape and hope that they don't drop your $55K top sub cab.
This design is as absurd and imbecilic as that Wilson Chronosonic debacle.
So you want killer sub-bass in you system and don't want to spend $220K? Two suggestions:
• Six Paradigm Persona Subs - two stacked in each front corner and one in each rear corner. You'll have about the same woofer radiating area as a pair of these stacked YG behemoths, have automated room correction, much smoother bass coverage due to the fact that you are spacing your woofers throughout the room and you can install them with just 2 average, but fit people... no cranes or forklifts needed. The subs are 110lbs. each. Total cost: $39K. Total RMS system power: 10.2kW
• Want to spend even less money? Get a dozen Rythmik Audio L12 servo subs. They offer no room correction, but, owning 4 of them and using a pair under each KEF LS50 in my stereo, I can attest that these things are killer. Are the cabinets super inert? No, but they are pretty good and, the more of these little wonders you add to your system, the less each one needs to work. And, then, the less each cabinet will vibrate. The big benefit they bring is the servo control of the low mass sub driver. It works and works incredibly well. Hell, let's go nuts and put 4 stacked in each room corner so we have sixteen 12" servo subs. The bass extension is dependent upon the subs settings, but you can easily get to 18Hz with a ton of headroom and the bass is incredibly defined with no lag or overhang/ringing. Total cost: $560 each x 16 = $6,960. Each sub weighs a bit over 50lbs. so installation is a easily done by one average person. Total RMS power: 4.8 kW.
Both of these systems I described will offer more clean bass than any person with even a large listening room can use. As described, the Paradigms would offer the equivalent radiating surface of six 18" sub drivers. The Rythmik system would give you the radiating area of eight 18" drivers.
There is nothing lust-worthy about the Wilson Chronosonic or this idiotic YG sub system. They are designed for people with more money than brains.
It's a shame you are giving this product any press at all.
