Dayton Audio DMA45-PR 1-1/2" DMA Series Passive Radiator - Walmart.com
Spectral DMA-50 Amplifier - Made in the USA
Hf-007 Hifi Speakers 10 Inch Sub Woofer Speakers Kit D10.8+dma-a+q1r+dn-dc2.5f Speaker Driver Unit - China Wholesale Speaker,hifi,10 Inch $465 from Dongguan Qin Huai Audio Technology Co. Ltd | Globalsources.com