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Guides & Technologies
Advanced YSTQD - Bass

Yamaha YST-SW315 Subwoofer Details

The YST-SW315 is designed to match Yamaha Home Theatre Speaker Systems. It features Advanced YST, QD-Bass technology, a PWM Digital Drive High Efficiency Amplifier, and BASS (Bass Action Selector System) switch.

Powerful Bass Response
In addition to a powerful amplifier, this subwoofer uses two exclusive Yamaha technologies that deliver outstanding bass response. Advanced YST has been used in many Yamaha speakers and has proven to be an efficient and reliable system. It decreases impedance so the speaker has a more linear motion, which results in optimum sound pressure levels. QD-Bass is a newer technology that uses down-firing drivers to radiate the bass sound more efficiently. It was originally developed for our top-line subwoofers.

High Power Amplification
The YST-SW315 features a PWM Digital Drive power system that is extremely efficient and stable. It allows the subwoofer to output a huge 270W of dynamic power, while maintaining low distortion.

Easy Operation
The YST-SW315 has controls conveniently positioned on the front panel, so you don’t have to reach around the back or the side. Front panel controls include a BASS switch, a Standby mode on/off switch, the main volume and the adjustable high cut filter. There are also two LEDs, red for power on and green for standby mode.

Environmentally Friendly
Internal parts and circuit boards do not contain lead, which is often used in other subwoofer brands, and is harmful to the environment. It also has a low-power standby mode, in which power
consumption is only 0.5W.

Yamaha YST-SW315 Subwoofer Specifications

Main Features

  • QD-Bass (Quatre Dispersion Bass) Technology
  • Advanced Yamaha Active Servo Technology
  • A/V ready, magnetically shielded for video use


  • Built-in 270 Watt high power amplifier

Driver Size

  • 10" down-firing driver

Other Features

  • Auto power on/off
  • Line level and speaker level connections
  • 40Hz to 140Hz continuously variable high-cut filter
  • High cut slope:-24dB/octave
  • Volume control
  • Phase normal/reverse switch
  • BASS selector switch


  • Frequency Response: 20Hz-160Hz
  • Dimensions (W x H X D): 13-3/8" x 17" x 14-9/16"
  • Weight: 37.4 lbs.

Yamaha YST-SW315 Subwoofer Reviews

41  (1 Review) 100% of reviewers would recommend this product to a friend.
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0 of 1 customers found this review helpful
  Quality Sub
2/1/2007 - Posted By Sam from NY, NY
  • Durable
  • High Quality
  • Good Value
Bottom Line: Yes, I would recommend this to a friend  
Product Review: I have had this for over a year. Have never had any problems with it and the performance has been very good. Was this review helpful to you? Yes/No
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Product Q & A

Yamaha YST-SW315 Subwoofer Contents

  • 1 YST-SW315 Subwoofer
  • 4 Nonskid pads
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The full manufacturer's warranty from Yamaha is only valid when the Yamaha YST-SW315 Subwoofer is purchased from an Internet Authorized Dealer. We will match any Internet Authorized Dealer's best price on the Yamaha YST-SW315 Subwoofer. The Yamaha YST-SW315 Subwoofer may be referred to by the following terms: YSTSW315.

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