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Ships within 48 hours · Estimated delivery Jul 13 - Jul 18
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Description
SA221SSynergy 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. Features Bass Reflex powered subwoofer: 6000 Watts (program), 17,000 Watts (peak) 2 x 21 inch Neodymium woofers
Synergy 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.
Features
- 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
Specifications
| 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 or 100 Hz lo |
| Cabinet Configuration | Bass Reflex |
| Driver Configuration | 2x21-inch LF woofer |
| LF Driver(s) | 21-inch Neo with 4.5-inch Tetra Coil |
| LF Power Rating(Watts) | 6000 Watts Program, 17000 Watts Peak |
| LF Impedance (Ohms) | 2 amplifiers, 4 ohms per amplifier |
| LF Protection | Excursion, Voice Coil Thermal (RMS) |
| LF Power Amplifier (Watts) | 6000 Watts Program, 17000 Watts Peak |
| 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 | Multi-ply 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), 2 UHMW Skid Glides On Rear |
| Dimensions (DWH xbackW, inches) | 32.750 (37.750 including casters) x 29.750 x 47.5 |
| Dimensions (DWH xbackW, cm) | 83.2 (95.8 including casters) x 75.5 x 120.6 |
| Weight (lbs/kg) | 370/168 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 1449 reviews
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Product Reviews
★★★★★ 5
he Durable, Natural Chew That Finally Gives Peace of Mind
Size: Large
Why It's a Top-Tier Chew:
Truly Safe Ingredients (Plant-Powered): This is the biggest selling point. The HonestChew is made from food-grade, plant-based cellulose, vegetable oil, and real antler bone powder—no nylon, no petroleum, and no plastic. This means I can finally relax when my dog is relentlessly gnawing, knowing the ingredients are safe.
Engineered for Safety AND Toughness: The material is specifically designed to flake rather than splinter like hard bones or crack like many synthetic chews. This makes it a much safer choice for dental health and digestive safety, even for the most aggressive chompers. It has the feel of a hard chew but with a safer breakdown.
Irresistible to Dogs: The chew is infused with real antler powder, giving it a natural, gnaw-worthy scent and flavor that keeps my dog engaged for long periods. The curved, ergonomic Infinity shape is excellent for dogs to grip securely with their paws, promoting a comfortable chewing posture.
Dental Support: The nubs and ridges on the surface aren't just for looks; they provide a gentle scraping action that helps scrub away plaque and tartar buildup on the teeth and above the gumline while the dog is happily playing.
Who Needs This?
If you have a dog that quickly destroys "indestructible" toys, swallows rawhide too fast, or causes you stress with the risk of bone splintering, the WOOF HonestChew Infinity is the perfect solution. It stands up to serious chewing and satisfies that innate gnawing instinct with confidence.
A highly recommended, long-lasting, and thoughtfully designed product that puts pet health first.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 22, 2025
★★★★★ 5
Great toy for super chewers!!
Size: Large
My dog is a super chewer and he enjoys these so much. I do too cause I feel like my money is actually getting spent well than on a plush toy he’ll destroy in two seconds. Definitely recommend these all the time for anyone who has that same issue with their pets. Very durable and perfect size for my big pit.
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Reviewed in the United States on June 2, 2026
★★★★★ 4
My dog loves this toy and she hasn’t chewed it up yet.
Size: Medium
This is a good chew toy for my aggressive chewer. I bought the large size for my medium size dog.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 5, 2026
★★★★★ 5
My Samoyed loved this!
Size: Medium
My dog’s favorite thing. This is his 4th toy and he loves it. The quality is great and it lasts very long. Definitely worth every penny you spend. It keeps my samoyed engaged every morning and every night. There is no choke hazard, so all dogs can use it
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Reviewed in the United States on May 12, 2026
★★★★★ 5
Long lasting
Size: Medium
My dogs love these and they last pretty long. I take them away when they get very small so I think they’re pretty safe.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
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