Yorkville Dual 21" Powered Subwoofer (17,000 watts)

Yorkville SA221S part of their Synergy Array series. It is a dual 21" powered subwoofer designed to deliver an incredibly high output and deep bass for large-scale events and concerts.

Here is a detailed breakdown of its key features:

Core Concept & Sound

• Massive Power Output: The SA221S is a powerhouse, boasting a peak power rating of 17,000 watts and a program rating of 6,000 watts. This massive amount of Class-D power is essential for driving the huge drivers and producing a truly thunderous bass response.

• Dual 21-inch Woofers: The subwoofer is equipped with two 21-inch neodymium woofers. Neodymium magnets are lighter than traditional ceramic magnets, which helps manage the overall weight of this massive cabinet. These drivers feature 4.5-inch voice coils, allowing them to handle the extreme power levels and long excursions required for deep bass.

• Bass Reflex Design: The cabinet utilizes a bass reflex design, which uses a port to enhance the low-frequency output and efficiency of the speaker. This design is crucial for delivering the exceptionally high output and deep bass the SA221S is known for.

• High SPL and Deep Frequency Response: The SA221S delivers a maximum SPL of 142.6 dB peak (130.6 dB continuous), making it one of the loudest subwoofers in its class. Its frequency response extends down to 28 Hz, providing a truly impactful and felt low-end that is crucial for genres like EDM, hip-hop, and for large venue sound reinforcement.

Build Quality & Functionality

• Rugged Construction: The cabinet is made from multi-ply 15mm birch plywood, a premium material known for its strength and acoustic properties. It is finished with a durable, scratch-resistant paint and features a powdered coated perforated steel grille to protect the drivers.

• Optimized for Synergy Array: While it can be used with any system, the SA221S is designed to be the perfect low-end companion for Yorkville's Synergy Array series full-range speakers (like the SA153).

• Professional Connectivity: It features a single XLR input with two parallel XLR outputs for daisy-chaining to additional SA221S subwoofers or other speakers. It also has a locking Powercon True input and loop thru output for power.

• Built for Portability (Relatively): Despite its massive size and weight (around 370 lbs), the SA221S is designed with mobility in mind. It has four locking swivel casters on the rear and numerous bar handles on the top and sides, making it manageable for a crew to move and stack. It also has a pole mount adapter on the top and side for mounting a full-range speaker on top of it.

• Advanced DSP: The subwoofer's onboard DSP includes thermal limiters to manage power consumption and protect the components from over-excursion, thermal issues, and clipping, ensuring reliable performance even under extreme conditions.

Overall Impression

The Yorkville SA221S is a serious, professional-grade subwoofer built for demanding live sound applications. It is not designed for casual use but for those who need a no-compromise solution for large venues, outdoor festivals, and concerts where a powerful and deep bass presence is a necessity.