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<blockquote data-quote="BroncoHound" data-source="post: 3541131" data-attributes="member: 575190">Alright guys, so the woofers in my Boston Acoustics Pro60 components stopped worked a while ago.&nbsp; I initially thought the amplifier had gone out because, while I was still getting sound out of my tweeters, the sound was not very powerful (read: wouldn&#039;t get very loud).&nbsp; So, I had the backseat out of my truck and was testing the amplifier by replacing it with one from my other truck (which resulted in no change, BTW) when I noticed that the woofer section of my crossovers are melted through.&nbsp; Obviously this is why my woofers are not working any longer, as it has happened to both sets of crossovers.&nbsp; Now, aside from ordering new crossovers, I am trying to figure out WHY this happened so I don&#039;t melt the new crossovers that I am replacing these with.So here is how everything is set up.&nbsp; First off, for reference sake, here is the back of my amplifier, a JL Audio 300/4.<img src="http://img.photobucket.com/albums/v457/BroncoHound/13204.png" alt="" class="fr-fic fr-dii fr-draggable " style="" />Okay, so I am just powering the Pro60 set off this amplifier.&nbsp; My rear door speakers are stock and are powered off the head unit; not amplified.&nbsp; So, i have one set of RCA&#039;s coming back to the 300/4 which are then hooked to splitters and connected to both the front and rear imputs on the amplifier.&nbsp; The front speaker outputs are connected in a bridged manner and run to the input on the passenger side crossover, which is then wired individually to the tweeter and woofer on the passenger side.&nbsp; The rear speaker outputs are connected in a bridged manner and run to the input on the driver side crossover, which is then wired individually to the tweeter and woofer on the driver side.&nbsp; The amplifier is in 4 channel input mode, both front and rear input voltage is set to &quot;low,&quot; both front and rear frequency range is set to &quot;1x,&quot; both front and rear filter slope is set to &quot;12db,&quot; and both the front and rear filter mode is set to &quot;off.&quot;&nbsp; The filter frequency of both front and rear channels is set to around 60hZ and the input sensitivity is about half way up on both front and rear.With the way it is set up, the only thing I can see that I don&#039;t like (the guy that initially installed the system did the settings for the amplifier and I never got around to changing them around since it sounded good) is that I think the filter mode should be set to &quot;HP&quot; to filter the lowest frequencies which should go to the subwoofers instead of the components, correct?&nbsp; Could not having that filter mode selected right have caused the melting of the crossovers?&nbsp; I can&#039;t see how it would, but I don&#039;t know for sure which is why I am asking here.&nbsp; I REALLY don&#039;t want to install a set of new crossovers without figuring out why these ones burned up and I can&#039;t do that without you guys.&nbsp; Please help!Thanks,Bud</blockquote>

[QUOTE="BroncoHound, post: 3541131, member: 575190"] Alright guys, so the woofers in my Boston Acoustics Pro60 components stopped worked a while ago. I initially thought the amplifier had gone out because, while I was still getting sound out of my tweeters, the sound was not very powerful (read: wouldn't get very loud). So, I had the backseat out of my truck and was testing the amplifier by replacing it with one from my other truck (which resulted in no change, BTW) when I noticed that the woofer section of my crossovers are melted through. Obviously this is why my woofers are not working any longer, as it has happened to both sets of crossovers. Now, aside from ordering new crossovers, I am trying to figure out WHY this happened so I don't melt the new crossovers that I am replacing these with. So here is how everything is set up. First off, for reference sake, here is the back of my amplifier, a JL Audio 300/4. [IMG]http://img.photobucket.com/albums/v457/BroncoHound/13204.png[/IMG] Okay, so I am just powering the Pro60 set off this amplifier. My rear door speakers are stock and are powered off the head unit; not amplified. So, i have one set of RCA's coming back to the 300/4 which are then hooked to splitters and connected to both the front and rear imputs on the amplifier. The front speaker outputs are connected in a bridged manner and run to the input on the passenger side crossover, which is then wired individually to the tweeter and woofer on the passenger side. The rear speaker outputs are connected in a bridged manner and run to the input on the driver side crossover, which is then wired individually to the tweeter and woofer on the driver side. The amplifier is in 4 channel input mode, both front and rear input voltage is set to "low," both front and rear frequency range is set to "1x," both front and rear filter slope is set to "12db," and both the front and rear filter mode is set to "off." The filter frequency of both front and rear channels is set to around 60hZ and the input sensitivity is about half way up on both front and rear. With the way it is set up, the only thing I can see that I don't like (the guy that initially installed the system did the settings for the amplifier and I never got around to changing them around since it sounded good) is that I think the filter mode should be set to "HP" to filter the lowest frequencies which should go to the subwoofers instead of the components, correct? Could not having that filter mode selected right have caused the melting of the crossovers? I can't see how it would, but I don't know for sure which is why I am asking here. I REALLY don't want to install a set of new crossovers without figuring out why these ones burned up and I can't do that without you guys. Please help! Thanks, Bud [/QUOTE]

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