Harmony Accessory Master Silverado dual | sku-290579421

Harmony Accessory Master Restored Automotive kit, SKU sku-290579421, UPC 650785164383, includes 1 sealed dual 10" enclosure and 2 Harmony Audio HA-F104 Flatline Series 10" subwoofers, each with a single 4 Ohm impedance. The enclosure fits under the seat of a 2014-2018 Chevy Silverado Double Cab, with the subwoofers firing downward.

It measures 55-1/4" long, 14-3/4" wide and 9-3/4" high, has a 5-1/2" mounting depth and provides 0.55 cubic feet of sealed air space per subwoofer. It is made from MDF with black carpet and has a twist-knob banana-plug terminal cup accepting bare wire up to 10GA. Each subwoofer handles 700 watts peak and 350 watts RMS, with 87.1 dB sensitivity and a stated frequency response of 25Hz-1.5Hz.

Subwoofer mounting depth is 4 1/16", and cutout diameter is 9 1/16". Recommended box volumes are 0.40 to 2.03 cubic feet sealed or 1.1 to 1.81 cubic feet vented. Each driver has an injection-molded polypropylene cone, aluminum cone cap, butyl rubber surround, tinsel leads woven into the spider, a 2" copper voice coil, steel basket, ferrite magnet and Kapton former.

The kit is described as ready to install and factory compatible. The source title identifies the sub box as new and specifies 2 Ohm; the single 4 Ohm rating applies to each included subwoofer.