Input needed!! February 24, 2006, 01:15:56 PM Hello, I just got the new Alpine CDA-9856 headunit put into my Cougar along with the Alpine Type-S 6x8s in the rear, and the Type-S 6.5s in the doors. I have all four speakers running off of the head unit's 18wx4 RMS amp. The speakers are rated up to 40w RMS. I find that whenever I turn it up to around level 30 out of 35, I get a decent amount of distortion from the speakers. I don't have any subs/other amps put in yet. I know that a lot the distortion came from the low end, so I turned down the bass a bit, but I still get a good amount of distortion in the mids at that volume level. The highs as always are crystal clear. I'm running with stock 16 AWG wire right now. My question is, if I say buy the MRP-240 amp (4x40w) to power the four speakers, will it clean up my sound with cleaner power, or will it in turn make my speakers distort even more by pumping more power to them? Thanks for any help! Quote Selected
Input needed!! Reply #1 – February 24, 2006, 06:50:45 PM does the head unit have a mid/high pass filter on it. my pioneer has a sepperate sub output/controle and the other 4 chanels have different filters i can apply to them. it cuts the low base out of them for me. more clean power should tighten them up though. i wouldnt expect earth shattering bass out of them though. Quote Selected
Input needed!! Reply #2 – February 24, 2006, 07:43:14 PM Yeah, I have set the low pass filters and it did make a good difference. I don't plan on getting any real bass out of them since I do plan on adding an Audiobahn 12" bass tube soon. But, you're saying that putting an amp on the speakers will clean up the sound without blowing up my speakers? Quote Selected
Input needed!! Reply #3 – February 24, 2006, 08:29:45 PM High pass not low pass...im sure you have it right though if it sounds better. it should take the low base out of the speakers. low pass is the signal you want to give your sub. a quality amp within the nominal rating of the speakers should tighten/clean them up, make them more clear with more volume without hurting them. keep it RMS to RMS power and you will be alright. watch out for cheep amps though. they can do more harm than good sometimes as well as compromise the sound quality. Quote Selected
Input needed!! Reply #4 – February 25, 2006, 03:10:54 PM Contrary to popular beliefe speakers more commonly distort from lack of power. That is most likely your problem. I have some Kenwood 5 1/4's up from that are rated close to what my deck puts out, then I have some Infinity Kappa 6x9's in back that are soo underpowered it's not even funny, I think they are rated for like 140w RMS, which sounds a little high, so that might be peak. But I'm pretty sure you could solve most of your problems by powering them through an amp. Quote Selected
Input needed!! Reply #5 – February 25, 2006, 06:39:41 PM Thank you very much for the info! I didn't know that, so now I'm gonna look into getting the amp for the door/dash speakers. Quote Selected
1988 Thunderbird Sport, Former 4.6 DOHC T56 conversion project. 
Topic: Input needed!! (Read 1745 times)
previous topic - next topic
