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Old 01-18-2006
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Amp Questions for future reference

I recently purchased 4 5x7 Alpine Type S speakers. In a few months i plan on getting an amp for them. I went to crutchfield and read their guides...but just not getting it. I want to amp all 4, so that means i would need a 4-channel, correct?
now how much power would I need? The speaker settings say: 2-40 watts RMS, peak power 200 watts. Not a clue as to what that means. How much power should i send to them. I read its best to overpower then to underpower, but should i be looking at the peak power or the 2-40 RMS?
thanks for any help.
-Jutty
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Old 01-18-2006
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get a 4 channel full range amp. something from 75x4 to 150x4 would be fine.
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Old 01-18-2006
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sweet, thanks man
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Old 01-18-2006
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wow 150 W rms (per channel) amp recommended for a 40 W RMS speaker? Sounds about 4 times too high if you ask me.

For best results, try to match RMS levels. If each speaker is rated for 40 watts RMS, then look for something around 40 watt RMS X 4 Amp. (It'll be much cheaper, and you won't have to sacrifice quality or brand name to get the power you want) With an alpine Type -S you may be able to do roughly twice the power without much worries. I was putting 75 watts RMS to a 60 watt Polk 6x8 and never looked back. I also have used the same speakers for almost 3 years, and still felt it worth while to keep even after selling my truck.

Doubling the power may give you 3 dB, but at an eventual cost of longevity. Just depends on what trade off you want to make.

p.s. A perfect match for your speakers:
http://iweb.alpine-usa.com/pls/admn/...=120&p_main=10
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Old 01-19-2006
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lol, i dont know what i was doing when i posted that response earlier.. i dont know how i came up with the numbers now tht i look at it. (maybe thinkin 150/4.. but the rest doesnt make sense.. i dunno..)

pay attention to the first half of my post, lol.. then look at michaels for the rest
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Old 01-19-2006
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Heh

Yeah, that would be definately over powering it. To be honest with you, I had my speakers in my old car amped for awhile with a two channel amp. Had no problem, Im sure I could have pulled it off with a mono channel amp too. Just made sure I had the frequency high and I was set. And the old amp was just some crunch 500Watt amp that my neighbors gave me. But yeah. Two above me has the right idea.
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Old 01-19-2006
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cool, now to save up, thanks for the info again!
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