Features

Dual 4Ω Voice Coils: The dual 4Ω voice coils offer wiring flexibility; when wired in parallel the woofer presents a 2Ω load, when wired in series the woofer presents an 8Ω load.

Compression Terminals: The L2-D410 features two sets of spring post terminals; they accommodate single banana plugs, dual banana plugs (standard 3/4" width), and bare speaker wire up to 10 gauge.

Trim Ring: To improve the cosmetic look, a decorative trim ring is included that mounts over the flange of the woofer. When using the trim ring the woofer is first mounted with four screws, then the ring is placed on top of the woofer, aligning the final four holes of the woofer with the ring. The other four screws are used for these holes to mount the ring and woofer to the enclosure. Without the trim ring the mounting height of the woofer is just over 1/2", with the trim ring it's approximately 1-1/8". The diameter of the trim ring is approximately 11".

Sealed Box: Lightning Audio recommends a sealed enclosure with an optimum internal volume of 0.65 ft³ (from 0.5 to 0.75 ft³ is acceptable). Sealed enclosures provide the most control over a woofer, will handle a lot of power, and provide accurate sonic reproduction, making them suitable for all types of music.

Ported Box: The optimum ported enclosure volume is 1.48 ft³ with one 3" diameter x 9.4" long port; this yields a tuning frequency of 38 Hz. Ported (or vented) enclosures typically provide better overall efficiency than sealed, so they are suitable for use with smaller amplifiers, giving you more bass output from less power. However, this efficiency comes at the expense of very low frequency output (below 34 Hz).