local guy i do business with started carrying new line ( Concept Audio ) . I waited for a few months to see what kind of problems they had what kind of feedback he got ,seemed to be all good > so i'm going to try and do 4- 15" PT series woofers(650rms, 2x2ohm voice coils) , only thing i'm skeptical about is air space for them PORTED is only 1.7-2.0 cu. ft. per woofer; he said it was all in the design of the woofer . so i guess i'm gonna go ahead n try it out , also> for now going to try and push each pair by one HCCA 250g4>> mono@1/2 stable i'm not sure about though gonna give it a try though will get some pics up this weekend probably

 

good luck with it, report on how it sounds! 4 15" 650 RMS subs? Tt's GOTTA be loud as ***** if you power it sufficiently. How many watts are you going to give them from the amp (RMS)?

PJ

 

orion hcca 250g4 = rated at 800wattsx1 (at 1 ohm) @12v
my old system i had the same two amps on their own hcca 12" my volts stayed about 12.8v-13v with two caps... but um?? i dunno .5 ohm mono = 1600watts x 1?? i guess i'll find out, hoping amp has the ***** to push it ;]

 

and really bad pic of amp

 

look like very weill built subs.. hopefully they'll sound as good as they look!