How much of a factor is the dB rating?

Question:
Say for instance could a sub with a dB rating of 91 and 400 watts rms ...sound similair or better than a sub at 86 dB with about 600 watts rms? would there be any cancellation between high rms and low dB rating?!!

I am putting new rear speakers in my 2005 Chevy Silverado (4 door). Any tricks to removing the door panel?

Considering everything is tuned to optimim and maximum sound!!

Answers:

Hey who is good with KENWOOD stereo?

Sensativity ratings are Very important. Most off-brand manufacturers lie about the sensativity ratings to make their product seem 'louder' with the same power. It's true, but it's really up to box-design that matters. You could put a crappy sub in a box that was designed for it and it will sound much much better and louder than a bad-a** sub in a crappy (or, prebuilt) box.
Please, buy your sub-amp, then buy the sub with an rms rating that is right under the rms rating of the amp, then have someone (if not yourself) build a study box with dimensions provided buy the sub manufacturer. To overpower a speaker is okay. Now, pushing distorted (clipped) signals to a sub (any speaker in that case) will blow it eventually.

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I have pioneer premier PRS-D3000SPL amp with (2)TS-W1207D4 subwoofers could I run this in 2 ohm safely?

it just depends on the sub, that shows how efficient it is, the 400 rms sub at 91db means it is creating 91db with 1 watt at 1 meter away

Im looking into buying a new car audio?

so it really is up to the freq. response, how clean the power from the amp is, the box, placement of box, there are so many factors to consider, if u gave me 2 different subs i can tell you what i personally think sound better in general, but it is up to the installation of it, and the person listening to it. hit me up if u have more q's

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What kind of amp do i need for these subs?

it is a factor if ur competing

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