SUB 650 driver
At the heart of this powerful subwoofer is a long-throw super driver, capable of moving large amounts of air with incredible speed and precise control. The 12in driver is equipped with a Ø 50mm/2in, four-layer voice coil. The heavy magnet systems feature a vented pole piece in order to avoid over/under pressure behind the dust cap (mechanical damping) when the cone is moving. This unit is an important part of the reason why the subwoofer offer top specifications and peak performance.

Variable Boundary Gain Compensation
This product has been implemented with Boundary Gain Compensation, not as a switch/input but as a variable adjustment. This makes it possible to fine tune the in-room bass response. The boundary gain compensation helps deliver a very linear in-room bass response. It compensates for the room influence at low frequencies, as any room amplifies the lowest frequencies. The magnitude of the room’s amplification depends on the room and where you are positioned – normally it increases the closer you get to a wall. This can result in too high bass level from approx. 60 Hz and increasing downwards. In the range between 20-30Hz it peaks up to 5-10dB in an average room. At first impression this could sound really impressive, but especially when listening to music the sound can be “boomy” and rather annoying.

BASH Amplifier
This subwoofer features the highly efficient BASH® amplifier technology, which combines the musical quality of class A/B amplifiers with the efficiency of class D amplifiers. BASH® technology translates into more efficient, yet more powerful amplification without the heat associated with conventional amplifiers.
This subwoofer also feature a convenient on/auto/off switch and built-in limiter, which means that sound reproduction will always be clean and as well defined as intended.

Level-, Phase- and Cut-off controls
Continuously variable level, phase and cut-off frequency controls make it easy to tune the subwoofer to suit virtually any speaker on the market as well as different placements and personal preferences.