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<blockquote data-quote="Art Welter" data-source="post: 133634" data-attributes="member: 52">Re: No compromises front loaded double 18” cabJim,1) Not &quot;substantially&quot;, but measurably, if you measure correctly.2) Agreed, but the design pluses of separate chambers are not limited to just &quot;failure mode&quot;.3) I have had brand new speakers stop working from various reasons such as improper crimp connections, spade lugs falling off, wires falling out, etc.I have measured many speakers (well) over a decade old, and the TS parameters are still nearly identical to when they were first &quot;broken in&quot;.I have had many an outside dual tire fail from sidewall puncture, the inner tire fortunately allowing us to &quot;limp away&quot; where replacement could be done with power tools. My first experience with that was over 50 years ago, and my father was not about to replace the bus tire on the one lane road we were on, but did as soon as the terrain opened up.The dual tire is a poor analogy, they each have separate &quot;chambers&quot;, like many designers prefer for speaker enclosures.&nbsp;4) Some guys, like me, and the many other designers that have done A/B comparisons think the slight weight gain separate chambers provide are well worth the time and materials when possible. The WS 2x12&quot; design posted at the top of this DIY Audio would be improved slightly with dual chambers, but because of the diagonal arrangement of the speakers would be difficult to implement.Other than those 5 points (including the truck bit), we are in complete agreement ;^)Art</blockquote>

[QUOTE="Art Welter, post: 133634, member: 52"] Re: No compromises front loaded double 18” cab Jim, 1) Not "substantially", but measurably, if you measure correctly. 2) Agreed, but the design pluses of separate chambers are not limited to just "failure mode". 3) I have had brand new speakers stop working from various reasons such as improper crimp connections, spade lugs falling off, wires falling out, etc. I have measured many speakers (well) over a decade old, and the TS parameters are still nearly identical to when they were first "broken in". I have had many an outside dual tire fail from sidewall puncture, the inner tire fortunately allowing us to "limp away" where replacement could be done with power tools. My first experience with that was over 50 years ago, and my father was not about to replace the bus tire on the one lane road we were on, but did as soon as the terrain opened up. The dual tire is a poor analogy, they each have separate "chambers", like many designers prefer for speaker enclosures. 4) Some guys, like me, and the many other designers that have done A/B comparisons think the slight weight gain separate chambers provide are well worth the time and materials when possible. The WS 2x12" design posted at the top of this DIY Audio would be improved slightly with dual chambers, but because of the diagonal arrangement of the speakers would be difficult to implement. Other than those 5 points (including the truck bit), we are in complete agreement ;^) Art [/QUOTE]

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