Skytec set coppia subwoofer passivi diffusori altoparlanti PA (2 x 1000 Watt Max totali, woofer da 18" (45 CM), Turbo Bass Reflex, 8 Ohm) : Amazon.it: Elettronica
1 WOOFER MASTER AUDIO CW400/8 altoparlante da 10,00 cm 100 mm 4" da 30 watt rms e 60 watt max con impedenza 8 ohm casa sensibilità 89 db, 1 pezzo : Amazon.it: Elettronica
woofer altoparlante 10" 4 ohm 150w - Globaltek
Hifi 4 Inch Full Range Speaker 8ohm 20W For Bookshelf Speaker Diy Full Frequency Loudspeaker Leather Edge 2pcs|Bookshelf Speakers| - AliExpress
Amazon.com: Seismic Audio - 18" Raw Subwoofers/Woofers/Speakers - PA DJ Pro Audio Replacement Sub - 750 Watts RMS - 240 oz Magnet - 8 Ohms - 4" Voice Coil : Musical Instruments