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<blockquote data-quote="Mario Pollio" data-source="post: 43888" data-attributes="member: 1262">Re: JBL PRX618S-XLF vs. JBL SRX718sThanks guys. Yeah I&#039;ve noticed the SRX spec threads. You do a google search and there are endless threads over many different forums about it, just with no certain/accurate answers. I do like the XLF&#039;s, I think they sound quite good for what they are. I think I&#039;ll just end up adding an addition 2 (total of 4) for larger rooms/parties. If my math is right, you get a 6db increase in max output when coupling subs, and I was planning on having 2 coupled on each side. So 133 plus 6 would be 139. Another 139 on the other side would be like having 2 dual 18&#039;s so 139 plus 3 would be 142db max output for the subs. One more thing I was wondering. Do the benefits of coupling end just with the SPL increase? I&#039;ve noticed dual 18&#039;s like the SRX728 not only get that 6db bump in spl, but also go lower in their frequency response. Would coupling also give you that lower frequency response as well?</blockquote>

[QUOTE="Mario Pollio, post: 43888, member: 1262"] Re: JBL PRX618S-XLF vs. JBL SRX718s Thanks guys. Yeah I've noticed the SRX spec threads. You do a google search and there are endless threads over many different forums about it, just with no certain/accurate answers. I do like the XLF's, I think they sound quite good for what they are. I think I'll just end up adding an addition 2 (total of 4) for larger rooms/parties. If my math is right, you get a 6db increase in max output when coupling subs, and I was planning on having 2 coupled on each side. So 133 plus 6 would be 139. Another 139 on the other side would be like having 2 dual 18's so 139 plus 3 would be 142db max output for the subs. One more thing I was wondering. Do the benefits of coupling end just with the SPL increase? I've noticed dual 18's like the SRX728 not only get that 6db bump in spl, but also go lower in their frequency response. Would coupling also give you that lower frequency response as well? [/QUOTE]

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