amp and speaker combination question

[Raceit]

I'm going to replace all my speakers and subs in my Explorer. I have 2 12" no-name subs (one of which is blown) and then the standard 4 speakers that you would find in a 2dr model.

I'm sure these are easy questions...My amp puts out 125x2. So does that mean when I buy 2 subs, they each need to be as close to 125w as possible? Also the same question, my CD player puts out 40x4. So each front and rear speaker needs to be close to 40w as possible? I'm not combining any outputs of the stero or amp to get more punch either. Also since I'm asking, is there any danger getting a speaker with a higher wattage then what will be going to it?
Thanks.

 

[mrsteve]

Okay first, the wattage you need to look at is the RMS output not the peak. Your headunit puts out 40x4 in peak power not RMS. I'm not sure about your amp is the 125watts is RMS or peak, but RMS is the wattage you wanna go by. When you buy a sub it would be nice to send the recomended amout of watts to it. In other words if your amp puts out 125 watts RMS don't buy subs that can only take 70 watts, but also don't buy subs that are gonna need 500 watts. Anything in the 100-150 range for RMS watts will do.
For the speakers it doesn't matter as much because the only way you could damage them by underpowering them is by playing your music too loud and have the signal "clip" Clipping will destroy your speakers, especially tweeters because of their small size.

Steve

 

[SpiderGear]

can you bridge the amp to like 1*250 ?

that would help alot, cheap speaker don't buy you anything, back in the older days i had 3*12" (cheapos) in an toyota, i one day decided to replace them with just 1 15" earthquake and the windows almost came out of the car. the earthquake gave about 3* as much sound pressure then those 3 12" combined.

an 12" earthquake will definatly make your teeth rattle, they cost about 180 bucks but then you would need an new amp to go with it too , somehwere in the range of 6-800peak watts mono on 4ohm.

in most cases if you just want it too sound DECENT , you can devide the woofer peak by 2 and then you get the amp you need on peak 4ohm's, in 99.9% of the cases this will sound decent and most likely you would have even turn the amp down a bit...

btw there are great differances in amp too....see i got 2 15" earthquakes...they are rated at 1000 watt rms and 1500 peak...my amp is an phoenix-gold series compettion amp that gives out 180 watts mono rms , but this is an class A amp, most cheaper amps are class B wich means if they got wrote on is 2*500 watts they will give something like 1/3 of that.....so that would be in the range of 2*150 true wattage...beware of that too


i can only suggest you hunt on e-bay, you can get some great deal on amp and subs....