sierrax
+1y
I never said anything about price but you always get what you pay for. To hit 141 with a single driver is not that uncommon anymore. There are alot of factors that come into play when you are talking about DB not just the driver, but I know what you are getting at. When you throw SQ out the window and just want to hit it for cheap then this is what you can use.
Pioneer TS-W3004SPL Car Subwoofer for $121. This subwoofer will definatly hit over 141 DB. Did a T-Bird with one of these using a new PG amp, 2 batteries and a cap in a ported box. In a week the dude broke most of the welds behind his rear seat and started to rip the hinges off his trunk.
Image Dynamics IDQ12 D4 V.2 Car Subwoofer. An old sub which you can get on ebay for $150 will most definatly hit the 141 mark.
With any sub no matter what it is you have to have the rest of the system to back it. So you can spend $10 on a sub or $1000 on a sub but its only going to be as good as the rest of your system.