Yamaha YST-SW315 10-Inch Digital Pro Series Subwoofer Review

Yamaha YST-SW315With today’s technology in music, movies and other media, optimum sound is not just a ‘nice to have’ feature; it’s a requirement. In order to get the most of your sound effects from the latest movies, games and music, you need a subwoofer that can handle the power of creating great sound and giving you the performance you’re looking for.

Yamaha understands that consumers want superior performance, sound and quality. That’s why they designed the Yamaha YST-SW315 10-Inch Digital Pro Series Subwoofer. Advanced YST technology allows this subwoofer to work with your speakers to create the perfect sound every time. With 250 watts that are high efficiency, you have enough power to deliver amazing bass effects that will make you think you’re in a movie theater.


Yamaha YST-SW315 Key Features


  • Frequencies
  • Low-Power Consumption
  • QD-Bass Technology
  • User-Friendly




In order to fully enjoy and appreciate the technologies of Dolby Digital and DTS surround sound, you need deep, clear bass. This is especially true of the ‘5.1’ and ‘6.1’ because the ‘.1’ is the channel that is dedicated to the bass frequencies. What that means is that you need a powerful subwoofer that is capable of handling extremely low frequencies. The Yamaha YST-SW315 subwoofer boasts a 20 to 160 Hz frequency response. It is able to deliver high power output at deep bass frequencies, with low power consumption and excellent stability.


Low-Power Consumption


The Yamaha YST-SW315 is equipped with a highly efficient pulse-wave modulation (PWM) digital-drive amplifier. The amplifier minimizes power loss from the transistors, resulting in superior conversion efficiency. It delivers steady and stable audio power and minimizes the heat production and AC power consumption. It does not require an output filter coil, resulting in a sound that is quiet and distortion-free.


QD-Bass Technology


This technology involves using a down-firing driver that is equipped with pyramid-shaped, square reflective plates to emit sound perfectly in four horizontal directions. These reflective plates negate the effects that might be caused by the floor’s surface, and reduces resonance between the sound waves that are reflected from the floor and the speaker itself. No other brand uses these reflective plates in their down-firing subwoofers. Many other brands use cones that are circular; however, by emitting sound in all four directions, the unit avoids firing the sound into the legs of the cabinet. This also lets you have greater freedom of placement, since the sound will be equally effective in all directions.




The Yamaha YST-SW315 is easy to use and very user-friendly. You can easily adjust the high-cut filter which is continuously variable and will set the highest frequency that the subwoofer will deliver. It can be set from 40 to 140 Hz. As an example, if the filter is set at 80 Hz, the subwoofer will only deliver frequencies that are 80 Hz or below. This results in a seamless presentation of acoustics.

The rotary volume control allows the ideal matching of the subwoofer’s output to the total volume of the system. The YST-315 is equipped with a signal-sensing circuit. When it detects an audio signal, it will turn the power on; when it doesn’t sense an audio signal for several minutes, it will shut itself off.

With the touch of a simple switch, the BASS (An acronym for: Bass Action Selector Switch) will tailor the unit’s output for music or video. The sub will accept either speaker-level inputs or line-level inputs. There is also a switch labeled phase normal/reverse that makes it a cinch to phase the unit with other speakers in your overall system.




The Yamaha YST-SW315 weighs approximately 42 pounds, with dimensions of 13.75” x 17” x 15.1” (Width x Height x Depth)

The shipping weight is 46 pounds. Currently, it is only available for purchase and shipping in the United States.




  • Advanced YST technology ensures that the amplifier and speaker work together harmoniously to create a perfectly linear speaker motion
  • 10” driver is equipped with a 250 watt, high-efficiency, digital amplifier
  • QD-Bass technology allows bass to radiate in all directions, creating a greater impact
  • Bass Action Selector Switch (BASS) tailors the output for music or video with just the simple touch
  • Comes in black only




There are many accessories that are available with the Yamaha YST-SW315. Popular items include interconnect cables, 2-way center channel speakers, gold-plated subwoofer cables and digital sound projectors. Other speakers are also popular, to compliment your overall system.

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There are many advantages to purchasing the Yamaha YST-315 subwoofer. It produces exceptional bass sound, even at the lowest frequencies. The low power consumption offers low AC power output, while giving quiet and distortion-free sound. The QD-Bass technology allows the bass to radiate in four directions, giving an equal sound no matter where the speaker is placed. The unit comes with a one year warranty, which covers parts and labor.




The power switch is located at the back of the unit, which can be difficult to reach, depending on where you place the unit.

Some consumers have said that the Yamaha manuals can be difficult and confusing to read. These same buyers have also said that the unit is fairly simple to set up, so the manual isn’t needed for in-depth knowledge.


Consumer Reviews for the Yamaha YST-SW315


Most consumers from sites like Amazon and Overstock are giving this unit excellent reviews.

They love the advanced technology, and when used in conjunction with other speakers, they are able to create a comprehensive system that gives the same quality performance of a movie theater.




At the time of this review, the Yamaha YST-SW315 is available at the price range of $270 to $300, plus shipping. It is only available in the U.S. at the moment. They are also available at other retailers, both online and offline; prices will vary according to the store and location.




Overall, the Yamaha YST-SW315 subwoofer is a good value for the price. Advanced technology features make this unit give a superior sound and the four-way sound remittance ensures the same quality sound regardless of where the unit is placed in the room.

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