Okay, so here's the deal. I have a 125w amp connected to my speakers and the front passenger side speaker keeps getting blown.. I think it's because of my sony head units, and it's not very good.. But then again, i never blast my music all hardcore n stuff. This is the 4th time blowing my speaker and they have been replaced multiple times... Any input? Help is appreciated!!

Sorry if this topic is dumb, im a noob at ICE stuff...

 

any input? ANyone? It's not because i blast my music, because i don't... btw

 

Remove the amplifier and connect the speaker directly to the H/U. Have the amplifier tested for "DC offset".

 

DC offset? What's that?

 

http://en.wikipedia.org/wiki/Dc_offset
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is an offsetting of a signal from zero. The term originated in electronics, where it refers to a direct current voltage, but the concept has been extended to any representation of a waveform. DC offset is the mean amplitude of the waveform; if the mean amplitude is zero, there is no DC offset.

DC offset is usually undesirable. For example, in audio processing, a sound that has DC offset will not be at its loudest possible volume when normalized (because the offset consumes headroom), and this problem can possibly extend to the mix as a whole, since a sound with DC offset and a sound without DC offset will have DC offset when mixed. It may also cause other artifacts depending on what is being done with the signal.

DC offset can be reduced in real-time by a one-pole one-zero high-pass filter. When one already has the entire waveform, subtracting the mean amplitude from each sample will remove the offset. Often, very low frequencies are called "slowly changing DC". While not technically accurate, a highpass filter can remove such a "changing offset" better because its cutoff does not extend to as low a bandwidth as the above method.
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What I suspect is happening is the channel that's always blowing speakers has a bad filtering capacitor, and therefore allowing DC to leak into the output of the speaker. This causes a lot of heat to build up in the voice coil, and limits performance when music (AC) is present. It causes failures almost instantaneously in tweeters.

Have you swapped channels on the amplifier? Switch the inputs, and trade L outputs with the R. This will verify the bad channel, however you'll risk blowing another speaker.

I suggest you return/exchange the amplifier. What make/model is it? Did you buy it through authorized retailer? Is it still under warranty?

 

that seems like quite a diagnosis without knowing the actual specs of the amp, speakers and how it is tuned. That could very well be the problem but it could also be as simple as the source unit sending a bad signal.

If you fade and balance the sound to only that speaker is the sound clear at normal volume and at the loudest that you generally listen to it? Do you normally keep the sound centered? Does your head unit have a DSP that focuses the sound differently? What model is your head unit and amplifier and speakers?

 

The amplifier specs, speakers and how it's tuned has nothing to do with DC offset, nor why he's blowing THE SAME speaker. Define "bad signal" from the source for me...as I can't think of anything that would cause speakers to blow due to that.

It's not uncommon for amplifiers to develop DC offset.

 

by a bad signal I am saying a distorted/clipped or not the same as the other 3 speakers. Some of the sony source units have the DSO feature which manipulates the sound. I don't know the full details of it because I am not a fan of sony products but it could cause signal to be stronger. My point was that there are several things that could be wrong that should be explored before coming to the conclusion.

 

If i fade and balance the sound to that speaker, it's quieter than all the other speakers. That was before i blew it.. Now, it's even queiter.. It's almost not playing anything. And the dso feature makes the sound distorted like crazy so i don't use it. The amp is a Performance Teknique amp and it's 125x4 watts.. Would it be better if i just didn't use the amp?

 

are you using components? cuz regular speakers 6.5 will blow if theres too much power! regardless!

how do you have them wired ? speakers to the amp and rca s from amp to radio front and rear?

 

yeah, i am using components.. They are also 2-way speakers(Eclipse). The amp is connected to a little box things, i don't know what it's called but it has 2 fuses in them, and then connected to the capacitor, then the hu.

 

is the gain on the amp up too high? (past half way?)

 

and maybe get another HU...

 

yeah, i think im just gonna buy a new HU... Damn, I've never read any good reviews about sony.. And this will just add to it.

 

you said two different things. Are the front speakers components or coaxials?

 

i had alpine components previously.. then i got the eclipse which are coaxials... I think. Yeah... so i still got the components..