Panasonic LOAA17A00003 6-inch subwoofer driver for sale. This driver came from an older Panasonic SA-HT720 home theatre sound system (SB-WA720 base unit). The diameter is 17cm (6.7-inch) measured from outer edges of metal basket, and the depth is 10.6cm (4.2-inch). The impedance is 6-ohms (6.7 Ω measured) and the sound pressure level (SPL) is 80 dB/W @ 1.0 meters. The recommended frequency response range is between 32 Hz and 220 Hz (-16 dB). Used, but in good working order