I had Some pioneer speakers with the blue cones and they were pretty bassy.
So I bought a set of Alpine Type R 6 x 9's and installed them in the same location that my pioneers used to be. First thing I noticed is they were very quiet compared to the Pioneers, could hardly hear them at all. So I had to turn up the gain on my amp (Alpine V12) for the rears to hear them.
On the songs where there should be bass you can see the cones moving but you really cant hear bass. I thought they could be wired out of phase so I tried wiring them the other way but still hardly any bass.
Cones have no rips or anything.
If they havent been used before, do they need to be run in as in used for a while before they begin producing better bass?
Any other ideas?
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Somebody else said "Your amp is only 40 watts rms per channel and those speakers are 100w rms each so thats why your getting no bass" - Is this true?
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look at the specs of the speakers, they have a sensitivity of Sensitivity: 89dB / W(1m) which isnt insanely low but isnt high by any means. This is probably relating to why you had to turn up the gain on your amp. remember its a log scale so if you old speakers were 91 thats a noticeable difference.
secondly look at the frequency response on the speakers (60Hz - 27kHz). I am assuming this is +/- 3 dB but it is not stated. 60 Hz isnt very low and your pioneers may be able to dig a little deeper into the lower frequencies. It is possible that after 60 Hz the response just totally dies off meaning no sound for the same input power.
Compare specs or give me the name of the old pioneer speakers, that can give us more info since they were run off the same amp and source.
Frequency response specs are all over the board for evert company- alpine might be using the -3db downpoints, where other less common companies will use lower points- making the less common brands seem better...
If you are really looking for bass, get a sub. 6x9's are a poor substitute.
But I agree that switching one of the speakers terminals should correct the problem.
Also, make sure that the speakers terminals are not wired backwards- check polarity on both. I had a set of 6x9's that pulled the voice coils apart because both speakers were connected backwards.