Originally Posted by chomowski
What's the benefit of having more than one rca output on a headunit? Like, what else would I be connecting to it?
I should also get some dynamats, yeah?
More RCAs allow you to feed more amps. Most decent decks have 3 sets of outputs: front, rear and subwoofer - with some kind of built in crossover and/or sub level control.
Dynamat? Yes its worth the $$ if you install it right. You need to strip out most of your interior, thus its a major project. In most installs I do at least the doors and the trunk, the rest of the car is deaden from the factory somewhat.
Originally Posted by cubdenno
Thanks for the insight on those Polks JMII. Because of your past responses, I have recommended them to a couple of my son's friends. Solid performers. They sound good!
They are a little bright at first but warm up once they break in, especially if set to the -3dB tweeter level on the crossover. Given their small magnets (slim mount) they actually have decent mid-bass output with the advantage of fitting in tight places. My only complaint with them is the lack of angle/swivel tweeter brackets and despite being "marine certified" the passive crossovers are not epoxy coated. They are a 3 ohm design with really high sensitively so they get insanely loud without much juice, yet seem to be able to handle more power if you've got it. I ran the 6.5" at around 75 watts and 80Hz high pass. They sound better then Infinity Reference speakers in my truck with the same power.
I haven't messed with Polk's DX (bottom) or SR (top) line, only the middle-of-the-road MM line and have been very impressed. In fact I use (and recommend) the MM subs as well: they work great in small, sealed enclosures. And once again they get plenty loud without being power hungry like the Kicker L-series square subs I've got in my truck. The MM subs are very smooth, deep and mellow, more of an SQ sub along the lines of Image Dynamics, not peaky and boomy like Kicker's stuff.