{"product_id":"wharfedale-pro-wla-121sub-21in-141db-high-output-flyable-subwoofer","title":"Wharfedale Pro WLA-121SUB | 21in - 141dB | High Output Flyable Subwoofer","description":"\u003ch2\u003ePassive Flyable Subwoofer\u003c\/h2\u003e\r\n\u003cp\u003e\u003cstrong\u003eWharfedale Pro WLA-121SUB\u003c\/strong\u003e is a 21-inch hybrid curvature array subwoofer designed to deliver powerful and controlled low-frequency performance for large-scale touring and installation systems. Built for flexibility, it supports both flown and ground-stacked deployment alongside WLA-1 full-range elements.\u003c\/p\u003e\r\n\u003ch2\u003eWharfedale Pro WLA-121SUB Competitive Differences\u003c\/h2\u003e\r\n\u003cul\u003e\r\n  \u003cli\u003e21-inch Beyma driver with 4-inch voice coil for high output and efficiency\u003c\/li\u003e\r\n  \u003cli\u003e1600W continuous power handling with up to 6400W peak capacity\u003c\/li\u003e\r\n  \u003cli\u003eMaximum SPL of 141dB for extreme low-frequency performance\u003c\/li\u003e\r\n  \u003cli\u003eFlyable design with integrated rigging for flexible deployment\u003c\/li\u003e\r\n  \u003cli\u003eBass-reflex enclosure for deep, controlled sub-bass response\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003ch2\u003eWharfedale Pro WLA-121SUB Description\u003c\/h2\u003e\r\n\u003cp\u003eThe \u003cstrong\u003eWharfedale Pro WLA-121SUB\u003c\/strong\u003e is engineered to provide the low-frequency foundation for high-performance WLA-1 systems. Featuring a 21-inch Beyma driver with a 4-inch Quattro voice coil, it delivers exceptional output while maintaining stability and thermal efficiency under demanding conditions.\u003c\/p\u003e\r\n\u003cp\u003eWith 1600W continuous power handling and the ability to reach up to 141dB SPL, the WLA-121SUB produces deep, impactful bass that remains tight and articulate even at high volume levels. Its bass-reflex design enhances low-frequency extension, making it suitable for large venues, festivals, and installed sound systems.\u003c\/p\u003e\r\n\u003cp\u003eThe enclosure is constructed from durable birch plywood and finished in black Tough-Tone coating, with a powder-coated steel grille for protection. Integrated rigging and multiple handles support both flown and ground-stacked configurations, while the M20 pole mount adds additional deployment flexibility.\u003c\/p\u003e\r\n\u003ch3\u003eWLA-121SUB Features\u003c\/h3\u003e\r\n\u003cul\u003e\r\n  \u003cli\u003e21-inch passive subwoofer for WLA-1 system\u003c\/li\u003e\r\n  \u003cli\u003eBass-reflex enclosure design\u003c\/li\u003e\r\n  \u003cli\u003e1600W continuous, 3200W program, 6400W peak power handling\u003c\/li\u003e\r\n  \u003cli\u003e141dB maximum SPL (half space)\u003c\/li\u003e\r\n  \u003cli\u003eBeyma LF driver with 4-inch voice coil\u003c\/li\u003e\r\n  \u003cli\u003eIntegrated rigging with 3 mounting points\u003c\/li\u003e\r\n  \u003cli\u003eSupports flying and ground-stacked deployment\u003c\/li\u003e\r\n  \u003cli\u003eM20 pole mount for system expansion\u003c\/li\u003e\r\n  \u003cli\u003eBirch plywood cabinet with durable finish\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003ch3\u003eWLA-121SUB Specifications\u003c\/h3\u003e\r\n\u003cul\u003e\r\n  \u003cli\u003eActive or Passive: Passive\u003c\/li\u003e\r\n  \u003cli\u003eSystem Type: Subwoofer\u003c\/li\u003e\r\n  \u003cli\u003eConfiguration: Bass-reflex\u003c\/li\u003e\r\n  \u003cli\u003eSystem Continuous Power: 1600W\u003c\/li\u003e\r\n  \u003cli\u003eSystem Program Power: 3200W\u003c\/li\u003e\r\n  \u003cli\u003eSystem Peak Power: 6400W\u003c\/li\u003e\r\n  \u003cli\u003eMax SPL: 141dB (half space)\u003c\/li\u003e\r\n  \u003cli\u003eFrequency Response: 25 Hz - 100 Hz (+\/-3 dB)\u003c\/li\u003e\r\n  \u003cli\u003eFrequency Range: 18 Hz - 125 Hz (-10 dB)\u003c\/li\u003e\r\n  \u003cli\u003eDriver Brand: Beyma\u003c\/li\u003e\r\n  \u003cli\u003eLF Driver Size: 21 in\u003c\/li\u003e\r\n  \u003cli\u003eLF Magnet Material: Ferrite\u003c\/li\u003e\r\n  \u003cli\u003eLF Frame Material: Aluminum\u003c\/li\u003e\r\n  \u003cli\u003eLF Voice Coil Size: 4 in\u003c\/li\u003e\r\n  \u003cli\u003eInput Connectors: 2 x 4-pole speaker connectors\u003c\/li\u003e\r\n  \u003cli\u003eCabinet Type: Rectangle\u003c\/li\u003e\r\n  \u003cli\u003eEnclosure Material: Birch plywood\u003c\/li\u003e\r\n  \u003cli\u003eGrille: Powder-coated perforated steel\u003c\/li\u003e\r\n  \u003cli\u003eFinish: Black Tough-Tone\u003c\/li\u003e\r\n  \u003cli\u003eHandles: 2 side (4 pcs) + 2 (top\/bottom)\u003c\/li\u003e\r\n  \u003cli\u003eDeployment: Flying, ground\u003c\/li\u003e\r\n  \u003cli\u003ePole Mount: M20\u003c\/li\u003e\r\n  \u003cli\u003eRigging: Integrated 3-point rigging\u003c\/li\u003e\r\n  \u003cli\u003eSensitivity: 103dB (2.83V \/ 1m)\u003c\/li\u003e\r\n  \u003cli\u003eSystem Rated Impedance: 4 ohms\u003c\/li\u003e\r\n  \u003cli\u003eRecommended HPF: 20 Hz, BW 18 dB\/oct\u003c\/li\u003e\r\n  \u003cli\u003eDimensions: 32.3 x 22.3 x 29.9 in (820 x 566 x 760 mm)\u003c\/li\u003e\r\n  \u003cli\u003eWeight: 155.4 lb (70.5 kg)\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003ch3\u003eWhat's In The Box\u003c\/h3\u003e\r\n\u003cul\u003e\r\n  \u003cli\u003eWharfedale Pro WLA-121SUB subwoofer\u003c\/li\u003e\r\n  \u003cli\u003eUser manual\u003c\/li\u003e\r\n\u003c\/ul\u003e","brand":"Wharfedale Pro","offers":[{"title":"Default Title","offer_id":52139114725658,"sku":"117170","price":2839.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/2714\/9082\/files\/wharfedale-pro-wla-121sub--21in---141db--high-output-flyable-subwoofer_8e7ae046-8544-4127-83a6-501926ddf805.webp?v=1777395052","url":"https:\/\/squarecable.com\/products\/wharfedale-pro-wla-121sub-21in-141db-high-output-flyable-subwoofer","provider":"SquareCable","version":"1.0","type":"link"}