Honest review of MM6501 and Polk in general
The MM6501's are my 3rd set of component speakers from Polk. My first set were the db series and were great. My second set died for no apparent reason and was replaced under warranty, the replacement set died in the exact same fashion with the woofer not responding unless you put pressure on the center of the cone. There are other instances of this if you google. This would be my last go for Polk car audio. I purchased the MM6501's and I was disappointed, not for quality of output but for build. I ran these off the same amp I have used for all the other Polk sets, an Alpine PDX 150.2 which has a regulated power supply for 4ohm or 2ohm speakers so the same amount of power is received. I hooked these up and had the gain at 0 that's ZERO and my head unit at about 31 out of 40 on volume. The crossovers got so hot that they literally melted, there are no shorts, or metal contact issues what so ever. If you swap out the crossover with another, no issues. I told myself if there were any issues after this, I wouldn't buy Polk any longer. Sound quality has always been awesome from this company, build quality is not. I suppose, JL, Focal, or other higher end companies will get my business. It was never about the cost, honestly, I always was a fan of the SQ that came out of their car audio line/home audio. I normally do not review items except the ones I feel are of great quality/value or that just suck so bad that I lose sleep. 3/4 sets of polk speakers were bad, no more
Pros: Great sound quality, "claimed" high power handling.
Cons: Build quality, crossover started smoking literally, and melted the plastic.