Amazon.com: Pyle 8-Inch Carpeted Subwoofer Tube Speaker - 400 Watt High Powered Car Audio Sound Component Speaker Enclosure System w/ 2” Aluminum Voice Coil, 4 Ohm, 30Hz-700kHz Frequency - Pyle PLTB8,Black : Electronics
BLACK 12" SINGLE COMPETITION PORTED SUB BOX
Mackie CR8S-XBT Hi-Fi subwoofer Black 200 W 30 Hz - 250 Hz | Conrad.com
MOD: MT12-800A SUBWOOFER ATTIVO -Potenza totale 1600 W -800 W RMS- woofer RCF da 12- 4,0″ VC- risposta in frequenza 30 Hz- 250Hz- 128 db SPL Max - Worldsonic
PLAN]Measure in inches 18" Tuned 30Hz Subwoofer Bassreflex - YouTube