Page 29 of Digital Home Theater General Catalog by Yamaha Audio & Video

digital home theater speakers subwoofers subwoofers a must for home theater full audio enjoyment of digital music and movie sources requires deep clear bass response yamaha subwoofers use sophisticated technologies such as qd-bass down-firing drivers that radiate the sound in four directions and advanced yst to ensure the highest levels of sound pressure and overall performance yst-sw1500 advanced yst and qd-bass subwoofer yst-sw515 advanced yst ii and qd-bass subwoofer yst-sw315 advanced yst and qd-bass subwoofer yst-sw325 advanced yst ii and qd-bass subwoofer yst-sw225 advanced yst ii and qd-bass subwoofer yst-sw215 advanced yst and qd-bass subwoofer yst-sw015 advanced yst and qd-bass subwoofer yst-fsw100 advanced yst ii and fd-bass subwoofer the yst-sw1500 yst-sw515 yst-sw325 and yst-sw225 are designed to acoustically match the speakers in the hx series 525 a-pmd series 325 a-pmd series and 225 pmd series see pg 25/26 and are recommended to be sold together with them subwoofers advanced yst qd-bass technology high-efficiency power amplifier linear port drivers magnetic shielding phase control normal or reverse auto standby bass bass action selector system output power dynamic power frequency response dimensions w xhxd weight yst-sw515 advanced yst ii yes yes yes 30 cm extra-long stroke 25 cm cone yes yes yes yes yes yes yes yes 1,000 w 5 ohms 250 w 5 ohms 1,000 w 270 w 16­160 hz 20­160 hz 420 x 511 x 448 mm 350 x 430 x 382 mm 29 kg 19 kg yst-sw1500 yes yes yes yst-sw325 advanced yst ii yes yes yes 20 cm cone 20 cm cone yes yes yes yes yes yes yes yes 250 w 5 ohms 150 w 5 ohms 270 w 170 w 20­160 hz 25­180 hz 350 x 430 x 382 mm 315 x 380 x 374 mm 19 kg 13 kg yst-sw315 yes yes yes yst-sw225 advanced yst ii yes yes yes 20 cm cone yes yes yes yes 120 w 5 ohms 150 w 28­200 hz 290 x 350 x 349 mm 11.5 kg yst-sw215 yes yes yst-sw015 yes yes yst-fsw100 advanced yst ii fd-bass technology half pipe port 16 cm cone yes yes yes yes 75 w 5 ohms 130 w 30­200 hz 400 x 375 x 157 mm 9 kg 20 cm cone yes yes yes yes 120 w 5 ohms 150 w 28­200 hz 290 x 360 x 322 mm 11.5 kg 16 cm cone yes yes yes yes 70 w 5 ohms 120 w 30­200 hz 280 x 325 x 320 mm 9.2 kg qd-bass technology qd-bass quatre dispersion bass technology uses down-firing drivers with square pyramid-shaped reflective plates to radiate the sound efficiently in four horizontal directions the reflective plates negate any effects caused by the floor surface and reduce resonance between sound waves reflected from the floor and the unit advanced yst advanced yamaha active servo technology advanced yst is a unique system in which the speaker and amplifier work together to cancel out impedance so the speaker unit has a perfectly linear motion advanced yst helps to ensure the highest levels of sound pressure and overall performance advanced yst ii yst-sw515 yst-sw325 yst-sw225 and yst-fsw100 in advanced yst ii an advanced negative impedance converter enables the speaker cone to be driven with even tighter control the result is more stable and accurate low range response as well as higher sound pressure levels for more natural and energetic bass reproduction bass the bass bass action selector system function lets you switch between movie and music modes providing the optimum frequency response in each case linear port yst-sw515 yst-sw325 and yst-sw225 the linear port provides smooth bass response during playback and minimizing extraneous noise half pipe port yst-fsw100 the subwoofer also employs a new design feature called the half pipe port which further smoothes bass response and minimizes extraneous noise 29

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