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Electro-Voice 400-watt 12-inch high excursion subwoofer, low-pass filter, Neutrik Speakon connectors, flying and sSB122 is quite possibly the smallest, most powerful subwoofer on the planet. Packing 400-watt continuous power handling (1600-watt peak) into a 33 lb (15 kg) package, the SB122 incredible performance for its size.Axial Sensitivity: (SPL, 1 W @ 1 m) 99 dB Half SpaceChassis Size: 304.8 mm (12")Coverage: (Nominal -6 dB) Essentially OmniInput Connections: 2 four-pin SpeakonNominal Impedance: 8Speaker Type: SubsFrequency Response (-10 dB): 43 - 200 HzInternal Crossover: YesRecommended High-Pass Frequency: 40 Hz 12 dB/octaveSensitivity: 1 W/1 m 99 dBMax. SPL/1m (calc): 131 dB Half SpaceSystem Power Handling (Continuous/Program/Peak): 400//1600 WattsLF Transducer: 12-inch EVS12SBCrossover Frequency: 160 HzMinimum Impedance: 6Flying: OptionalHeight: 586 mm (23.07")Width: 429 mm (16.89")Depth: 312 mm (12.28")Weight Net: 14.6 kg (32.19 lbs)Features:Sb122 performance with enhanced weather-resistanceLow-pass filter for parallel connection without added ampLarge vent for enhanced LF outputCast-frame EVS12SB long-excursion wooferPower handling: 400 W continuous, 1600 W peakParallel Neutrik Speakon high current input connectorsStrong, composite trapezoidal enclosurePole mount on top for pairing with Zx1
Used Electro-Voice SB-122 subwoofers typically trade in a USD124–718 range on the recent market, with a median of USD142 across comparable listings. At USD879 for an unknown-condition unit, this asking price lands well above the 75th percentile—ambitious at best, potentially a pass unless it's pristine or bundled with extras.
Buyers should verify the driver excursion remains intact (these high-excursion cones tear over time from heavy bass abuse) and test for amp overheating or port noise, common in powered 400W models pushed hard. Confirm if the original grille, feet, and power cable are included, as missing bits tank resale value.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
# Electro-Voice
Electro-Voice was founded in 1927 by Al Kahn and Lou Burroughs in South Bend, Indiana, initially as Radio Engineers before incorporating under its now-iconic name in 1930. The company's name originated from Notre Dame football coach Knute Rockne, who dubbed an early public address system his "electric voice"—a system designed to help him communicate across multiple practice fields. This humble basement startup evolved into a cornerstone of American audio engineering, relocating to Buchanan, Michigan in 1946 to expand its manufacturing and research capabilities.
The brand built its reputation primarily on professional audio equipment, particularly microphones, loudspeakers, and horn drivers. Electro-Voice pioneered numerous innovations including the hum-bucking coil for microphones, the Compound Diffraction Horn, stereo magnetic phono cartridges, and constant-directivity horn technology. From the 1940s through the 1970s, EV stood alongside industry titans like Altec Lansing, JBL, and Klipsch, with systems widely deployed in cinemas, concert halls, and broadcast facilities.
Today, Electro-Voice occupies a unique position straddling professional audio and high-end consumer markets. The brand is respected among both vintage audio collectors and contemporary sound engineers for its engineering rigor, high-efficiency designs, and naturally dynamic sound character. While primarily known for pro audio applications, EV's historical consumer loudspeaker lines and continued innovation maintain its relevance among discerning audiophiles seeking honest, efficient reproduction over marketing-driven aesthetics.
See all Electro Voice listings on RADAR.
