Yamaha

This compact subwoofer for keyboards incorporates a number of advanced, high performance, exclusive bass technologies from Yamaha, including a Twisted Flare Port and the Advanced YST II (Yamaha Active Servo Technology II). This results in one surprisingly clean bass response that adds really so much to your musical experience, whether you are playing or listening. The brand new Twisted Flare Port takes advantage of the extensive subwoofer development technology. There flared and delicately flared spreads the vortex air generated around the edge of the door, creating a regular air flow. This reduces extraneous non-noise present in the original input signal and provides a sharp and precise bass reproduction. Come on special effects sounds in movies to the atmosphere of a live place, feel the bass that is sharp, tense and realistic. Developed exclusively by Yamaha, the Advanced YST II (Yamaha Active Servo Technology II) combines the principles negative impedance and constant current per drive the speaker cone...