Quote Originally Posted by curtis265 View Post
sry to steal ur thread, but i'm soon looking at getting a sub for my car - i've currently got an aftermarket head unit installed, and i think all the speakers have been changed (pretty good 6x9's at the back)

Anywya i'm looking for some bass punch - should i get a proper amp or just a monoblock? What sort of power ratings should i be looking at?

or could my 6x9's be underpowered? (they do pack quite a bit of bass if i ahve the volume high, but the treble kills my ears to get that bass)
That's alright mate, just steal it
It would be awesome if you tell us what HU and what speakers you've got. Are the front coaxes or compos? (I reckon they're coaxes, otherwise you'd mention it). Also, what car does it go in? How much space do you want to sacrifice? All that sort of stuff...
Whatever they are, they're almost certainly underpowered, as ANY HU produces 4x15Watt RMS at most. And yes, forget about 4x50 what you read on the package, that's max peak power, has nothing to do with "real world", sorry.
So, imho you should get yourself a sub and an amp to match. Amp should be a 4 channel. Channels 1+2 will power up your front speakers, channels 3+4 will in bridged mode power up your sub. Most amps will in bridged mode accept only 4 ohm load, so your sub should be a 4 ohm sub. Dont worry if amp produces "too much power (RMS)" for the given sub, thats better then having not enough power fed to it.
As for your rear 6x9's, best thing is to sell them on ebay or alike, and invest the money in the amp and sub. But if you have to have them, they can run off the HU, but set them up not too loud. Remember, you want to hear music in front of you, not behind you!
Another VERY important thing if you want to have a half way good sound is SOUND DEADENING at least your doors and your boot!!!!! This can't be repeated too often, as it's CRUCIAL for a good sound in your car!!!!! Remember also this: All the music you hear when standing next to your car, IS MISSING INSIDE!!!
Wish you luck, if you need more info, or have questions, just ask, I'll help where I can