SEAS Lotus RM120 - L0021-04S Midrange woofer

The Lotus Reference RM120 from SEAS is a meticulously engineered midband woofer designed to deliver clean, accurate midrange reproduction in compact loudspeaker systems. As part of the prestigious Lotus series, this driver excels in applications where precise vocal and instrumental clarity is paramount, making it an ideal choice for high-fidelity two-way designs or as a dedicated midrange unit in multi-way configurations. Its compact 114.3mm nominal diameter and shallow 61.5mm depth allow integration into slim enclosures without compromising acoustic performance.

Technically, the RM120 boasts a sensitivity of 90.5 dB SPL at 1 metre with 2.83V input, ensuring efficient power handling. The total Q factor of 0.35, derived from a mechanical Q of 2.95 and an electromagnetic Q of 0.4, indicates a well-damped response suitable for sealed or ported alignments. A low voice coil inductance of 0.25 mH and a DC resistance of 3 ohms contribute to controlled impedance behaviour. The rubber surround guarantees long-term durability and controlled cone excursion, while the 99 mm cut-out diameter and six mounting holes facilitate straightforward installation. With a depth of just 61.5 mm and an overall frame size of 120.4 mm, this driver combines refined engineering with practical versatility, offering audiophiles and designers a reliable foundation for exceptional sound quality.