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Old 06-11-2003, 03:21 PM   #1
DEE-REX
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Question Rear door speaker upgrade (03 wrx sedan)

I put in infinity 4002i coax in the rear doors. I can hardly hear them, because my front infinity 605cs conmponents are way too powerful. The problem became even worse, when I upgraded my AMP. I upgraded from alpine mrpf-240 (40wx4) to mrvf-340 (55wx4). The rear speakers are rated only for 35w rms.

Any suggestions, on whats going to fit, and whats more powerful than 35w....something in the 50-60w range? Any special install instructions for these?

I really like good sound coming from the back...miss my eclipse gs-t...had great speakers in the back, and placed very optimally too!
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Old 06-12-2003, 03:10 PM   #2
DEE-REX
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Unhappy

looks like nobody knows....I did some research thro the forum, info is still not clear...but seems like kappa 42.5 have been successfully used in the rear doors...they are also 50w rms.....Somebody please help me out...are there any 5.25'' brands that might fit there?
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Old 06-12-2003, 05:55 PM   #3
armand1
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Why bother with the rear speakers at all, unless you are planning on carrying important rear-seat passengers? If the fronts are good, and that's all you can hear, what's the problem?
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Old 06-12-2003, 08:17 PM   #4
DEE-REX
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I'd like to hear sound from the back. It just feels "full". Its tough to explain...check out a mitsu eclipse 2nd generation...you will know what I'm saying
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Old 06-12-2003, 09:04 PM   #5
lgkahn
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I don't understant having a speaker that handles more watts typically means it is less efficient and thus will not be as loud as the current speakers.

I have 6" polks in the front and 5 1/4" kenwood in the rear.

I had to cut the rear door panel to fit the coaxials in as there is no speaker to panel clearance.

I looked for speakers for both the front and rear that had the same relative efficiency ratings to avoid this problem

ie 92 db at 1 watt/1 meter..

that means supplying them with 1 watt of power and listening from 1 meter away they should put out 92 decibels of volume

search on crutchfield.com they have ratings for all their speakers.

hope this helps..
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Old 06-12-2003, 09:43 PM   #6
WORWRX
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Adjust the gain to the rear and front channels; if your amp allows you to do that; if not buy a crossover or an equalizer to give you more control.
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Old 06-13-2003, 05:14 PM   #7
DEE-REX
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thanks guys....I see what you are saying, but if the speakers had the same efficiency, but if one had more wattage than the other...then assuming that you had an amp with enough power to drive them....wont it make the speaker sound louder.
If i increased the gains, I'm scared, I might blow up the speaker....
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Old 06-13-2003, 05:35 PM   #8
WORWRX
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you won't blow the speakers if they can handle the wattage; but it sounds like you need a crossover...double check your install also and make sure the polarity on the speake wires are correct.
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Old 06-13-2003, 07:34 PM   #9
DEE-REX
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the speakers come with a built in cross over, my amp also has a cross over, and it is adjusted to pass everything over 80 HZ. The speakers are rated 35 watts, but the Amp is putting out 55 W!
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Old 06-14-2003, 10:06 PM   #10
DEE-REX
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Default what about subs?

gave up the idea of upgrading to a better 4'' rear speaker...I'll live with infinity 4002i for now, probably having a good sub can move the sound field a little to the rear.
So I was thinking of an Alpine 200w rms amp with a type-s or infinity reference 12'' or..
an infinity basslink. What are your thoughts?
I dont want distorted bass in the car so that the boom can be heard by my neighbour...but I want my car to sound like a "hip-hop club" inside with loud clear bass...
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