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  #13  
Old 07-14-2009, 07:59 AM
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Re: Boston Acoustic speakers

Under powering a speaker cannot harm it. Clipping a speaker can. If the OP is cranking the volume (amplifier) past clipping then that could be the issue. But, one would have to assume that the BA driver is a more efficient driver, therefore needing less power than the base model to achieve similar "loudness." I think the issue is with the receiver. If the problem only occurs when you are playing a CD and not any other sources (i.e. radio, sat, etc), then all roads lead to the receiver.
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Old 07-14-2009, 07:28 PM
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Re: Boston Acoustic speakers

It happens with all sources. Radio, external sirius, cd. It defintley is because i do not have the amp.
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Old 07-14-2009, 09:18 PM
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Re: Boston Acoustic speakers

The BA speakers are definitely more effecient drivers with a higher rms power rating. If there is still only 66 watts of total power coming from the RAQ headunit the speakers are definitely being underpowered. It will not harm them as Matt said but with the higher rms power rating, the drivers require more power to effeciently reproduce sound. For example, say you have an amp with a rms power rating of 500 watts running a subwoofer with a rms power rating of 500 watts. Say you switch that subwoofer out for a one with a rms power rating of 1000 watts. The second sub may not be as effecient as the first setup due to the second subwoofer requiring more power to to effeciently move the cone of the woofer. This will result in more distortion. That is what the power ratings are for. A speaker should always be matched with an amp that has equilevant power rating for the best sound quality reproduction.
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  #16  
Old 07-15-2009, 01:13 AM
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Re: Boston Acoustic speakers

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Originally Posted by Lifted_up View Post
The BA speakers are definitely more effecient drivers with a higher rms power rating.
A higher RMS power rating does not mean a driver is more efficient than another. At all (not even close!).

Quote:
Originally Posted by Lifted_up View Post
If there is still only 66 watts of total power coming from the RAQ headunit the speakers are definitely being underpowered. It will not harm them as Matt said but with the higher rms power rating, the drivers require more power to effeciently reproduce sound.
False. Clipping may be happening, but this is not the result of a driver being underpowered. A driver + being underpowered + no clipping = no problem!

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Originally Posted by Lifted_up View Post
For example, say you have an amp with a rms power rating of 500 watts running a subwoofer with a rms power rating of 500 watts. Say you switch that subwoofer out for a one with a rms power rating of 1000 watts. The second sub may not be as effecient as the first setup due to the second subwoofer requiring more power to to effeciently move the cone of the woofer. This will result in more distortion. That is what the power ratings are for. A speaker should always be matched with an amp that has equilevant power rating for the best sound quality reproduction.
If sub A had an efficiency of 91.5 db and sub B had an efficiency of 81.5 (assuming sub A had an RMS rating of 500w and sub B had an RMS rating of 1000 watts), I would take sub A all day over B based on efficiency (RMS power is the most overrated thing in car electronics BTW).

I know I sound like a dick, but honestly, all that you have said is false. I spent over a year reading/researching about this. It is never necessary for a driver to be matched with an equivalent amount of power... this is just what the industry and marketing experts want you to think. Again, I apologize if I came across as an ass, but I would want someone to correct me if I was not giving them the best available info, that was my only intention.
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Old 07-15-2009, 08:38 AM
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Cool Re: Boston Acoustic speakers

First of all I didn't start on here to argue with Matt. I was helping a fellow jeeper...I didn't say it is more effecient with a higher power rating. There alot of things that go into factoring if it is more effecient. Construction of the speaker, sensitivity, power handling, and more.

What I said was if it is matched with a proper amp that has the same ratings, the setup will be more effecient. Just think of this....and these are ridiculous numbers, but this will get my point across....If you have a speaker that can handle 2000 watts rms and you have one that can handle 75 watts rms. Both of them have the same specs and construction all except for the power ratings. You hook up an amp with 50 watts rms.....which one do you think will perform better? The speaker with 75 watts rms will perform better because it is matched better with the amp. If you were to hook up the speaker with the 2000 watt rms power rating to the amp, of course you're going to get sound but it's not going to be the most effecient sound that the speaker can reproduce because it is not properly matched. And with the same specs all except for the power ratings, the larger speaker is going to require more power to drive the speaker so there is possibly going to be less output. I only speaking from experience also.....I have been installing audio equipment for quite a while now for myself and for a company. I am only speaking from experience and have had many different setup's.
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Old 07-15-2009, 09:49 AM
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Re: Boston Acoustic speakers

Ok....I'm done....anybody want to have a drink? lol Matt?
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  #19  
Old 07-15-2009, 09:55 AM
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Re: Boston Acoustic speakers

Quote:
Originally Posted by Lifted_up View Post
First of all I didn't start on here to argue with Matt. I was helping a fellow jeeper...
Again, I apologize if I came across as a dick, my only intention was to get the info correct for the OP.

Quote:
Originally Posted by Lifted_up View Post
I didn't say it is more effecient with a higher power rating.
I mean, look above, that's exactly what you said...

Quote:
Originally Posted by Lifted_up View Post
There alot of things that go into factoring if it is more effecient. Construction of the speaker, sensitivity, power handling, and more.
Sensitivity = efficiency

Quote:
Originally Posted by Lifted_up View Post
What I said was if it is matched with a proper amp that has the same ratings, the setup will be more effecient. Just think of this....and these are ridiculous numbers, but this will get my point across....If you have a speaker that can handle 2000 watts rms and you have one that can handle 75 watts rms. Both of them have the same specs and construction all except for the power ratings. You hook up an amp with 50 watts rms.....which one do you think will perform better? The speaker with 75 watts rms will perform better because it is matched better with the amp. If you were to hook up the speaker with the 2000 watt rms power rating to the amp, of course you're going to get sound but it's not going to be the most effecient sound that the speaker can reproduce because it is not properly matched. And with the same specs all except for the power ratings, the larger speaker is going to require more power to drive the speaker so there is possibly going to be less output. I only speaking from experience also.....I have been installing audio equipment for quite a while now for myself and for a company. I am only speaking from experience and have had many different setup's.
Again, go to a real car audio site (i.e. DIYMA) and you will find that RMS ratings are grossly overrated. When you see a drivers spec sheet saying 1,000 watts RMS, that is in no way a power requirement; it doesn't mean that it will take 1,000 watts to for the driver to play at its full potential, at all. A drivers RMS rating simply tells you how much A.C. power can be dissapated in the speakers voice coil without damaging the speaker (mechanical failure). Again, it is in absoultely no way a power requirement in any way. Plenty of guys over on that site run 1,000 watt woofers with a measly 200 watts being fed to them and they couldn't be happier.


Sorry to be the asshole (it's a role I don't like to play), but it's hard for me to sit back and not correct ya know. I certainly don't consider myself a know-it-all by any means, but I do try to offer what I do know to JG.

---------- Post added at 10:55 AM ---------- Previous post was at 10:50 AM ----------

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Ok....I'm done....anybody want to have a drink? lol Matt?
haha, cheers!

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  #20  
Old 07-15-2009, 10:49 AM
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Re: Boston Acoustic speakers

Quote:
Originally Posted by Lifted_up View Post
The BA speakers are definitely more effecient drivers with a higher rms power rating. If there is still only 66 watts of total power coming from the RAQ headunit the speakers are definitely being underpowered. It will not harm them as Matt said but with the higher rms power rating, the drivers require more power to effeciently reproduce sound. For example, say you have an amp with a rms power rating of 500 watts running a subwoofer with a rms power rating of 500 watts. Say you switch that subwoofer out for a one with a rms power rating of 1000 watts. The second sub may not be as effecient as the first setup due to the second subwoofer requiring more power to to effeciently move the cone of the woofer. This will result in more distortion. That is what the power ratings are for. A speaker should always be matched with an amp that has equilevant power rating for the best sound quality reproduction.
I know what got you to think that now.....I was meaning that the driver it self is a more effecient driver plus it has a higher rms rating. Maybe that's what you're talking about. Hope that clears it up.
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  #21  
Old 06-04-2012, 08:02 AM
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Re: Boston Acoustic speakers

bump= did anyone ever install bass blockers on the front tweeters?

looking for a inexpensive fix at the moment for the distortion, rather than replace everything with kicker. i considered replacing the speakers with another set of BA dash speakers, but im not 100% sure theyre blown as opposed to just being distorted.
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