This product is sold brand new. A manufacturer warranty applies only when the manufacturer provides one for this item.
Return requests must be submitted within 14 days of delivery and approved by our RMA department before the item is shipped back. Non-defective returns may be subject to a minimum 25% restocking fee and return shipping charges. Unauthorized returns are not eligible for credit or refund. Read the full return policy.
21QLEX1600Fe QLEX Series 21" Subwoofer 8 OhmWith its powerful 1,600 W AES rating and high 98 dB sensitivity, the 21QLEX1600Fe achieves substantial output while maintaining efficiency. The 4″ QUATTRO in/out copper voice coil contributes to strong motor force and effective heat dissipation, and the Maltcross® cooling system further supports extended high‑power performance. The ±13 mm Xmax and 60 mm peak‑to‑peak travel provide the physical capability for deep, controlled bass motions without distortion. The weather‑treated cone and double silicone spider add durable reliability for both indoor and outdoor systems. Featuring an FEA‑optimized ceramic magnet with aluminum demodulating ring, the driver maintains linearity and reduces harmonic distortion. Designed for subwoofer use across a 30–1000 Hz band and optimized for a 170‑liter bass‑reflex enclosure tuned around 38 Hz, the 21QLEX1600Fe is a solid choice for professional bass‑heavy sound systems.
Solid Line: On Axis Dotted Line: 45° Off Axis
At Beyma, the challenge of heat dissipation is met with a clear objective: ensuring our speakers consistently deliver optimal performance within the system, maximizing total sound pressure level (SPL) and maintaining stability.
It's widely recognized that a system's overall SPL decreases over time due to power compression effects in the speakers. Typically, larger voice coil diameters correlate with higher power capacity; however, this also necessitates bigger motor structures to achieve high total output from the transducer.
Beyma's Maltcross cooling technology presents multiple solutions to achieve this goal. It enables the woofer to handle higher power levels with a given coil diameter, allowing for designs with smaller coils and motor structures. This reduction in size decreases weight, increases sensitivity, and maintains adequate power handling for specific applications, resulting in a total SPL comparable to that of drivers with larger motor structures.
Maltcross technology incorporates a forced convection circuit within the driver's core, effectively lowering the coil's operating temperature. Additionally, it functions as a demodulation ring, linearizing the transducer's inductance.
This product is sold brand new. A manufacturer warranty applies only when the manufacturer provides one for this item.
Return requests must be submitted within 14 days of delivery and approved by our RMA department before the item is shipped back. Non-defective returns may be subject to a minimum 25% restocking fee and return shipping charges. Unauthorized returns are not eligible for credit or refund. Read the full return policy.