crystal cmpx2 15"s - any info?

[2010HHRUMADBRUH 10+ year member]

Guy has these up for trade on local craigslist

What are they worth, what's the actual RMS on each and what will they actually handle, what's the lowest wattage these will sound good on (I have about 1700w rms for both, will that be enough if they are 1600w rms each?)

Are they a SQ sub?

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[denim 5,000+ posts]

Those are one of my old fav's. If in good shape, it's worth a decent amount. An early "super sub" in a way. Meaning, great sounding sub that can take some power and get loud if called upon.