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Topic Review (Newest First)
01-31-2010 10:21 AM
Dremin2flyhi Some Clarity on SENSITIVITY-- is rated dba (decibel A-rated/weighted) output that a speaker can deliver given usually a 1KHZ tone at 1 watt at 1 meter distance from the measuring source-- usually a Spectrum analyzer or Sound meter . So the higher the number is-- the sound output is louder .. But keep in mind-- you probably will not be able to tell a difference in speaker that is 84.5 or 87-- but you can tell a difference usually above 5 dbs or more.. Then a speaker rated at 91 or 92 dba will be louder at the given input wattage compared to the 84.5 or 87 speaker.
01-30-2010 07:26 PM
Coyote_94YJ
Quote:
Originally Posted by KawiTJ View Post
I would definitly say you did your homework.... I oughta work on that one
Thanks. That's why I run infinity. But the thing to remember is each manufacturer has different classes of speaker so just because the Infinity Kappa beats all the rest in that speaker size doesn't mean all Infinity's are best. You'll just have to compare the numbers and see what's what. Now you'll know what the numbers mean on the back of the boxes.
01-30-2010 07:10 PM
KawiTJ
Quote:
Originally Posted by coyote_94yj View Post
Ya, I know. It makes the manufacturers feel better about themselves.

Sensitivity is the clarity of the speaker. It is how manufactures quantify how crisp and clear a speaker sounds.
I would definitly say you did your homework.... I oughta work on that one
01-09-2010 01:06 PM
Coyote_94YJ
Quote:
Originally Posted by 02 Apex View Post
Wow. You really did your homework. Glad you stated power in means if RMS and not the misleading, "Peak". I still don't get the high frequency ratings on speakers, considering most human ears can't hear past 20Khz. I have to confess, I don't know what sensitivity means. I understand dBa, so, is that spec for a max dB, or something?

Thanks.


PS - When all's said and done, it's what's satisfying to your ear that counts.
Ya, I know. It makes the manufacturers feel better about themselves.

Sensitivity is the clarity of the speaker. It is how manufactures quantify how crisp and clear a speaker sounds.
01-09-2010 11:28 AM
02 Apex
Quote:
Originally Posted by coyote_94yj View Post
Well lets see what the numbers say. These are based off of the best 4x6 speaker that will fit the Jeep dash from each manufacturer. I threw in a few other brands just for fun.

Boston Acoustics S75
- Frequency Range: 70Hz-20KHz
- Sensitivity: 92dB
- Power(RMS): 35W

JL Audio Evolution C2 400x
- Frequency Range: 71Hz-22KHz
- Sensitivity: 84.5dB
- Power(RMS): 35W

Infinity Kappa 462.9CFP
- Frequency Range: 75Hz-25KHz
- Sensitivity: 94dB
- Power(RMS): 60W

Alpine SPS-406
- Frequency Range: 93Hz-22KHz
- Sensitivity: 87dB
- Power(RMS): 45W

Pioneer TS-A4672R
- Frequency Range: 45Hz-30KHz
- Sensitivity: 90dB
- Power(RMS): 20W

Sony XS-V4642A
- Frequency Range: 25Hz-33KHz
- Sensitivity: 89dB
- Power(RMS): 30W

You can see JL Audio gets schooled. Boston Acoustics has the same frequency range just at a lower level but the sensitivity doesn't measure up to the Infinity. The Pioneer and Sony ones surprisingly have the best frequency range by far but they don't have the sensitivity to match. Infinity also has the highest RMS power rating out of all of them.
Wow. You really did your homework. Glad you stated power in means if RMS and not the misleading, "Peak". I still don't get the high frequency ratings on speakers, considering most human ears can't hear past 20Khz. I have to confess, I don't know what sensitivity means. I understand dBa, so, is that spec for a max dB, or something?

Thanks.


PS - When all's said and done, it's what's satisfying to your ear that counts.
01-09-2010 06:25 AM
Coyote_94YJ
Quote:
Originally Posted by Tazman2 View Post
do not go with infinity, if you want a decant sounding sound system go with something like JL audio. I had infinity their crap. ether way you look at it if you want high performance sound from using upgraded speakers using stock equipment you will need some type of amp to boost the frequency of the speakers. and if you want a little more bass use tweeters. we just got done with my buddies 09 JK and it sounds awesome. He did the whole system for under $300. I know its not cheap but If your looking for high quality it will cost you. we re fabed his sound bar so the tweeters and amp fit so nothings on the floor and you don't have to worry about it getting smashed. unless you roll just my 2cents.
I'm sorry. I just now read all of your post and there are a few bits of misinformation.
First, amps DO NOT boost the frequency. They boost the power thereby making what ever frequency coming out louder. The frequency will be based on the weakest components. For example a head unit that has a range of 35-30K with an amp that has a range of 60-32K and a set of speakers that has a range of 55-36k. The sound you hear will have a range of 60-30k because the head unit has the lowest high range and the amp has the highest low range. The amp will only make that sound louder.

Second, tweeters don't make more bass. They don't make bass at all, but I do understand what you're getting at. What you meant to say is to use component speakers where the tweeter is separate and the woofer is unobstructed.
01-09-2010 05:23 AM
Coyote_94YJ Well lets see what the numbers say. These are based off of the best 4x6 speaker that will fit the Jeep dash from each manufacturer. I threw in a few other brands just for fun.

Boston Acoustics S75
- Frequency Range: 70Hz-20KHz
- Sensitivity: 92dB
- Power(RMS): 35W

JL Audio Evolution C2 400x
- Frequency Range: 71Hz-22KHz
- Sensitivity: 84.5dB
- Power(RMS): 35W

Infinity Kappa 462.9CFP
- Frequency Range: 75Hz-25KHz
- Sensitivity: 94dB
- Power(RMS): 60W

Alpine SPS-406
- Frequency Range: 93Hz-22KHz
- Sensitivity: 87dB
- Power(RMS): 45W

Pioneer TS-A4672R
- Frequency Range: 45Hz-30KHz
- Sensitivity: 90dB
- Power(RMS): 20W

Sony XS-V4642A
- Frequency Range: 25Hz-33KHz
- Sensitivity: 89dB
- Power(RMS): 30W

You can see JL Audio gets schooled. Boston Acoustics has the same frequency range just at a lower level but the sensitivity doesn't measure up to the Infinity. The Pioneer and Sony ones surprisingly have the best frequency range by far but they don't have the sensitivity to match. Infinity also has the highest RMS power rating out of all of them.
01-09-2010 12:46 AM
02 Apex I would throw that junk away and go with Boston Acoustics. Hard to beat for natural, flat response. Their dealer network is for the shite, but you can find good deals on fleabay. Just make sure you have some true, quality watts to drive them.
01-09-2010 12:11 AM
Tazman2 do not go with infinity, if you want a decant sounding sound system go with something like JL audio. I had infinity their crap. ether way you look at it if you want high performance sound from using upgraded speakers using stock equipment you will need some type of amp to boost the frequency of the speakers. and if you want a little more bass use tweeters. we just got done with my buddies 09 JK and it sounds awesome. He did the whole system for under $300. I know its not cheap but If your looking for high quality it will cost you. we re fabed his sound bar so the tweeters and amp fit so nothings on the floor and you don't have to worry about it getting smashed. unless you roll just my 2cents.
01-08-2010 10:34 PM
KawiTJ thanks alot... i thought the infinity did sound clearer... ill just let the boss in for now... would like to fix the rigged wireing that was done by the previous owner, but its a little cold out for that. heres a pic of the infinity speaker i have
01-08-2010 12:45 PM
Coyote_94YJ Infinity for sure. The wattage doesn't mean crap when it comes to sound quality. Frequency response and sensitivity are the things your going to want to compare. You'll have to get the model number off the back of the speakers and look up the specs on each set of and compare them.

Frequency response - the wider the range the better
Sensitivity - the higher the number the better

But I'm sure the Infinity set will have some better numbers than the Boss set will.
01-08-2010 12:05 PM
mrcarcrazy Problably the Infinity. but having a look at the specs should speak volumes.

the majority of the weight should be the magnet stuck to the bottom.

I've really never seen the need for a maximum watt rating other than as a 1/2 false use for advertisement. as the vast majority of people under drive speakers...thus blowing them out with distortion when they try to crank it up.
01-07-2010 09:42 PM
KawiTJ
infinity vs boss speakers

I have a set of infinity 4x6 speakers that are 145 watt I think and a set of boss 4x6 speakers that are 200 watt... anyone have an idea which are better? The infinity has a plastic base and the speaker overall weighs way more. The boss has a metal base.

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