Name: Yamaha NS-SW300 10" 250W Subwoofer
Brand: Yamaha
Price: 579.0 AUD
Availability: InStock
Rating: 4.9 (69 reviews)

4.9

Rated 4.9 out of 5 stars

69 Reviews

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An active 10-inch subwoofer from Yamaha with a 250 W built-in amplifier, a Twisted Flare Port and Advanced YST II. Yamaha lists a frequency response of 20-160 Hz.

Yamaha describes the NS-SW300 as a design combining superior operability and beauty, and introduces its new Twisted Flare Port for clear and tight bass.

Woofer

25 cm (10") cone

Amplifier

250 W

Response

20-160 Hz

Standby

0.3 W

Weight

18 kg

Port

Twisted Flare Port

Yamaha explains the Twisted Flare Port

Why you will love it

Twisted Flare Port

Yamaha says the flared, gently twisting port shape diffuses the vortex of air around the edge of the port, creating a smooth flow of air. It says this reduces extraneous noise and gives clear, accurate low frequency reproduction.

Yamaha NS-SW300 subwoofer in black, angled view showing the side port

Yamaha NS-SW300 10-inch subwoofer in black

PWM digital drive amplifier

The built-in power amplifier delivers 250 W, per Yamaha, with high efficiency and minimal power consumption and heat. Yamaha says it needs no output filter coil, which results in extremely low noise and distortion, and that a dual feedback circuit reduces distortion by applying feedback twice.

Advanced YST II

Yamaha developed Advanced YST II (Yamaha Active Servo Technology II), which combines negative-impedance and constant-current principles to drive the cone with tighter control than the previous version. Yamaha says its ANIC circuits dynamically optimise effective speaker impedance to maintain linearity.

25 cm woofer with square wire voice coil

A 25 cm (10 inch) woofer is used in a front-firing configuration. Yamaha says the square wire voice coil can be wound more densely for higher magnetic flux density, giving high drive force for tight and deep bass.

Design

Yamaha says the rounded front and side-panel accents are meant to match a wide range of speakers and interiors.

Front controls and auto standby

The power and volume controls are on a front panel angled at 45 degrees, with an LED indicator above the power button.

A system control terminal can be linked to the amplifier's power. Auto Standby switches the subwoofer to standby when no signal is received for a fixed period and wakes it when a signal returns, says Yamaha.

Is it right for you?

A great fit if you…

Want to add a subwoofer to a stereo or home theatre system
Have an amplifier or receiver with a subwoofer output
Want controls on the front of the cabinet

Worth knowing

It is an active subwoofer and needs a subwoofer output from an amplifier or receiver
Yamaha says it has a sensitivity selector and phase control (normal or reverse) and a B.A.S.S. switch
It weighs 18 kg and measures 350 mm wide, 366 mm high and 420 mm deep, so check your space

Build your system

The NS-SW300 connects to the subwoofer output of an amplifier or receiver.

Stereo: Use the subwoofer output of a Yamaha A-S501 or another stereo amplifier.
Home theatre: Connect it to an AV receiver.
Speakers: Match it with Yamaha NS-555 floorstanding speakers or other floor-standing speakers.
Smaller option: See the Yamaha NS-SW200, or browse subwoofers.

Specifications

Subwoofer

Driver	25 cm (10") cone
Output power	250 W
Frequency response	20-160 Hz
Advanced YST	Yes
High-efficiency power amplifier	Yes
Twisted Flare Port	Yes
BASS (Bass Action Selector System)	Yes
Auto standby	Yes
Standby power consumption	0.3 W
System connector	Yes

General

Dimensions (W × H × D)	350 × 366 × 420 mm
Weight	18 kg

Specifications from Yamaha Australia's NS-SW300 specification page, checked November 2026.

Questions people ask

Is it active or passive?

Active. It has a built-in 250 W amplifier.

What does the Twisted Flare Port do?

Yamaha says its flared, twisting shape smooths the air flow at the port and reduces extraneous noise.

Does it switch itself on and off?

Yamaha lists Auto Standby and a system control terminal that can follow the amplifier's power.

What is the frequency response?

Yamaha lists 20-160 Hz.

4.9

Rated 4.9 out of 5 stars

Based on 69 reviews

97%would recommend this product

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AT
Adam T.
Verified Buyer
I recommend this product
Rated 5 out of 5 stars
1 month ago
Great product, great price, great experience
In market for new subwoofer to replace in my 5.1 surround system and found great Yamaha at Todds Hifi website. They were running sale and the Yamaha was perfect for what I needed. Easy to buy safely online and Todds shipped to Sydney with no fees. Unit arrived safely and on time. Can’t fault Todds Hifi and won’t think twice to use them again.
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CG
Chris G.
Verified Buyer
I recommend this product
Rated 5 out of 5 stars
2 months ago
BIG DOG
Sound is so much richer now, with a bottom end that is felt as well as heard. Great price and super timely delivery two states away. Ankylosaur is for scale only.
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VL
Vince l.
Verified Buyer
I recommend this product
Rated 5 out of 5 stars
3 months ago
Works great!
I’m very happy with this subwoofer, it works perfectly. The sound is great
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DW
Duncan W.
Verified Buyer
I recommend this product
Rated 5 out of 5 stars
6 months ago
Great speakers
These are really nice speakers. The sound is good. They arrived quite quickly and were really easy to install. I can totally recommend Todd 's products and service
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JM
Joshua M.
Verified Buyer
I recommend this product
Rated 5 out of 5 stars
10 months ago
Great tight sound that can shake when it needs to
After realizing I set this up wrong I was able to get a lot more from it than I thought possible. First I needed to boost bass from my av receiver first. I put the subwoofer at 25% volume then calibrated the av receiver. This stopped the clipping and blowout. Next I moved the sub next to my back wall and slightly angled. This made a HUGE difference. I have absolutely no issues now and have more bass than I need while having it tight and controlled. Seriously amazing value.
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