had some!!! they like the small boxes, says so in the specs, ans look at the frequency response of the sub and the "fs" in the sub specs. A p3 10 would get down low in that enclosure. I promise!I found a p3d210 on ebay for $103 shipped. Looking at the specs, how can you tell how low a sub plays?
OP ... How much lower than 22 htz you wanting to go and still be fairly loud ??I know a guy that runs BluesCarAudio. His 10s are tuned to around 22htz. That low enough ??