I posted a thread a week ago about an audio upgrade and after some responses, decide to get some nice components. Friend got me a hook up for some infinity kappa 60.9cs component speakers for ($130, is that good price?) and a Pioneer Premier DEH-P410UB ($130 also). Question is, I am looking to most probably amp these speakers. I been looking at some amps. The specs on the 60.9cs sas 270W max and 90W RMS at 2 ohm. I am looking at these to amps.


http://www.bestbuy.com/site/olspage.jsp?sk...d=1199494646190

or

http://www.newegg.com/Product/Product.aspx...N82E16882117279

I will be able to get either for about the same price.

The big thing I don't understand is that the pioneer is 600W amp and the alpine is a 200W amp. But they both have similar RMS output (75W RMS at 2 ohms). How does this work out? Which of these two are the better setup for the speakers. I do want to keep the door open for some rear speakers hence the 4 channel or even just using it for a low power sub. I am also to other suggestions but do keep in mind I am on a budget.

 

There's no such thing as the perfect amp but, between the two, I give a slight edge to the Alpine based on the specs in the links you provided. My reasons are:

1. The Pioneer produces 25% more power from 4 to 2 ohms (60 watts at 4 ohms vs 75 watts at 2 ohms) while the Alpine produces 50% more (50 watts at 4 ohms vs. 75 at 2). These numbers indicate that the Alpine will do a better job supplying current as impedance changes. Speakers can have rapid impedance changes as a function of which frequencies they are reproducing.

2. It is irresponsible and misleading for Pioneer to quote maximum wattage; I commend Alpine for their more conservative marketing. The maximum wattage is irrelevant for how you are going to actually use the amplifier.

3. The Alpine is smaller so it will be easier to install

 

is the different between the 90W rms speakers and 75W RMS amp too much of a difference that it will damage my speakers or are they an acceptable match.

 

Do you have a link to some information about the speakers? It's unusual for components to run at 2 ohms so, before answering your question, I should probably look at the specs.

 

http://www.crutchfield.com/p_108609CS/Infi...9cs.html?tp=106

 

Thanks to agate for the link.

The answer to the question is no. Pairing an amp that only delivers 75 watts with speakers that can handle 90 watts is not a problem if you set the amplifier gain properly.

Going by Crutchfield's information, these particular speakers will make an amp work harder. 4 ohms is more typical. Since both of the amps you are looking are rated to operate at 2 ohms stereo, you should be OK with either amp.

In addition, I noticed the sensitivity of these speakers is 93 DB. That is well above average and suggests they will get very loud on very little wattage.

 

with the entire post.

 

with "the dude" agreeing with the entire post.