Installation is abetted by the polarized, nickel-plated terminals on the PCB terminal board, which ensure simple yet secure wire connections. And though the marine certification makes the speakers a particularly good choice for seafaring listeners, the speakers also fit comfortably in cars, trucks, and other vehicles.

Listeners with finely tuned ears will dig the speakers' high- and low-pass crossovers, which deliver clearer, more accurate midrange frequencies and glare-free highs. The crossovers give the DB 570s more natural imaging than other speakers in this class, most of which use single-stage, high-pass-only filters.

Other features include a pole-plate heat sink that promotes better heat dissipation for superior power handling and reliability; a flat spider that enables faster and longer excursions; flexible woven leads sewn directly into the spider for greater dependability; and rock-solid, acoustically inert stamped steel baskets with a rustproof gunmetal gray finish.

The DB 570s, which offer a frequency response of 52 Hz to 22 kHz and a peak power handling of 180 watts, require a mounting cut