Yamaha YST-SW012 100W 8-Inch Front-Firing Subwoofer

Yamaha YST-SW012 100W 8-Inch Front-Firing Subwoofer

A good-cosmetic-condition Yamaha YST-SW012 active subwoofer with a freshly replaced woofer driver — a compact, front-firing 8-inch powered sub featuring Yamaha’s Advanced YST II (Active Servo Technology II) and QD-Bass technology, ideal as a subtle, room-friendly bass reinforcement for a small-room music or home-theatre system.

The YST-SW012 is built around Yamaha’s Advanced Yamaha Active Servo Technology II, a closed-loop feedback design that pairs a high-current amplifier with an optimised driver / port system to extract genuine low-frequency extension from a remarkably compact cabinet. The result is rated frequency response down to 28 Hz from a sub that occupies just 11.4 inches on a side — useful for music, dialogue reinforcement, and the lower end of film effects in apartments, condos, dens, and small-to-medium living rooms where a larger sub simply will not fit.

The 8-inch front-firing magnetically shielded cone driver is paired with Yamaha’s Linear Port for clean, low-distortion port output, and the front-firing design gives the sub flexibility for placement against a wall or under a console. Power output is 50 watts continuous / 100 watts dynamic, with a variable level control on the rear panel. Connectivity is straightforward via a single RCA LFE input — clean and simple, and fully compatible with the dedicated subwoofer output of any modern AVR, integrated amp, or active-speaker setup.

The most important thing about this particular unit: the 8-inch woofer driver has been replaced and the sub has been bench-tested as fully working and sounding great. The driver is the part of any used subwoofer most subject to age-related failure (foam surround rot, voice-coil rub, suspension fatigue), so a fresh driver materially extends the practical service life of the unit and removes the single biggest reliability risk that buyers worry about when shopping used subs.

Please note that the original front grille is not included with this unit. The driver is fully functional and visually presentable, but buyers with young children, pets, or high-traffic placement should plan for that. The price has been set with the missing grille fully accounted for.

Cosmetically, the cabinet presents in good condition, with the typical light handling marks consistent with careful use and no significant blemishes to the cabinet or rear panel.

This Yamaha YST-SW012 has undergone our Level One service and testing which should ensure many more years of reliable performance ahead.

Product highlights:

8-inch front-firing active subwoofer

Advanced Yamaha Active Servo Technology II (Advanced YST II)

QD-Bass front-firing port technology

Magnetically shielded driver — safe placement near CRT displays

50 W continuous / 100 W dynamic amplifier output

Variable level control

RCA LFE / line input

Compact cabinet — easy placement in small rooms

Freshly replaced woofer driver

Specifications:

Type: Active front-firing subwoofer with Advanced YST II and QD-Bass

Driver: 8-inch (200 mm) magnetically shielded cone

Continuous output: 50 W

Dynamic power: 100 W into 5 ohms

Frequency response: 28 Hz – 200 Hz

Input sensitivity: 50 mV (50 Hz, 50 W / 5 Ω)

Inputs: RCA LFE / line

Front grille: Not included

Condition: Good cosmetic, fresh replacement woofer

Dimensions (W x H x D): 11.4 x 11.4 x 12.9 inches (290 x 290 x 328 mm)

Weight: 18.7 lbs (8.5 kg)

A good-cosmetic-condition Yamaha YST-SW012 active subwoofer with a freshly replaced 8-inch woofer driver — a compact, room-friendly powered sub that adds welcome low-end reinforcement to any small-room music or home-theatre system, with the practical service life of a much newer unit thanks to the fresh driver.

Backed by Radique Audio’s 90-day warranty and our perpetual trade-back policy, you can purchase with confidence.