Everything in Music - Since 1958

Yorkville SA221S Synergy Series Dual 21" Subwoofer

  • Our Price
  • $5,349.00
  • Regular price MSRP: $7,499.00


Complete Your Synergy Series Array With The Powerful Yorkville SA221S Dual 21" Active Subwoofer

This powerful dual 21-inch subwoofer is the perfect low-end companion to the Synergy Array series, Yorkville Sound's largest and most powerful point-source system to date. The SA221S can be combined directly with an SA153 as an independent system or in combination with the SA153 and SA315S setup as a 5-way system.

  • Bass Reflex powered subwoofer: 6000 Watts (program), 17,000 Watts (peak)
    • 2 x 21-inch Neodymium woofers with 4.5-inch voice coil
  • Exceptionally high output and deep bass
    • Measured MAX SPL (C-Weighted, Max Hold): 130.6dB continuous, 142.6dB peak
  • Frequency response (Hz +/- 3db): 28Hz-100Hz
    • Crossover frequency (Hz): 50 and 100 Hz low-pass
  • Made in Canada


  • Active or Passive: Active
  • Power Rating (Watts): 6000 Watts Program (17000 Watts Peak)
  • Measured Max SPL (C-Weighted, Max Hold): 130.6 dB Cont. 142.6 dB Peak
  • Frequency Response (Hz +/- 3dB): 28 - 100Hz
  • Crossover Frequency (Hz): 50/100 lowpass
  • Cabinet Configuration: Bass Reflex
  • Driver Configuration: 2x21" LF woofer
  • LF Driver(s): 21" Neo with 4.5" Tetra Coil
  • LF Impedance (Ohms): 2 amplifiers, 4 ohms per amplifier
  • LF Protection: Excursion, Voice Coil Thermal (RMS)
  • LF Amplifier Type: Class D
  • Cooling Scheme: Convection
  • Power Cable: Removable Locking Powercon True Input and Loop Thru Output
  • Power Switch: Yes
  • Power Consumption (typ/max): 1440 VA/1920 VA
  • Inputs: 1 XLR with 2x XLR Parallel out, Impedance 35k ohms
  • Input Sensitivity (Vrms Sine): Line in 1.4 at center, 0.56 at max
  • Level Controls: Volume, -∞,0dB,8dB (Min, Top, Max)
  • EQ Controls: Thermal Limiter Advance for power consumption management
  • Limiter: Excursion, Thermal (RMS), Clipping
  • LED Indicators: Power, Excursion Limit, Thermal (RMS) Limit, Input Clip, Activity
  • Enclosure Materials: Multiply 15mm Birch Plywood
  • Stacking Feature: Rubber Feet and Cups (Side and Bottom)
  • Covering/Finish: Paint
  • Other Details: 4 x Locking Swivel Casters On Rear Of Cabinet, 2 Stand Adapters (1 Top, 1 Side)
  • Dimensions (D x W x H): 32.75" (37.75" including casters) x 29.75" x 47.5"
  • Weight (lbs/kg): 338.6/153.59

Manufacturer: Yorkville Sound
Model: SA221S
Warranty: See manufacturer website for details
SKU: I625330-N-3-B

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