Old Boston Pro 10.5lf sub


Junior Member
Sep 13, 2016
Guys, I have 1 of these old Boston Pro 10.5lfs.  The 2 ohm.  It's in a small-about 0.4 cu ft sealed custom fiberglass enclosure for my dodge ram under the rear driver's side seat.  It's been running off of one side of a Rockford Punch 500s so getting 250W, according to the amp specs.  I don't have the certificate to know for sure what the actual wattage is.  The manual on these just says: Recommended Amplifier Power: 50-1100 watts.  That's a pretty wide spread but it seems it should be able to handle a lot more than the 250W.  It doesn't list max power.  The site speakerboxlite site says the max power is 2200 watts.  So I don't really know what the best RMS power would be to run this most efficiently.

 Anyone here have any suggestions or real-life experience?  I bought a new Alpine PDR-M65 Amp, rated at 650 RMS into 2 ohms, the certificate says actual output is 796 watts into 2 ohms.  It seems that would do the trick pretty well, but before I take the plunge and switch out my amp, I thought I'd check here and see if anyone had some input.  Much Thanks.  



Gunz That Turn on Nunz
Feb 5, 2013
South Coast Metro, CA
throw the biggest amp on there and set the gains for XXX amounts of watts.  Just because you have thousands of watts doesnt mean you need to use all of it. just check dustcap or coil temperatures.