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<blockquote data-quote="Papermaker85" data-source="post: 8483166" data-attributes="member: 572595">it could be alot of reasons. measuring peak output over a small range/bandwitdh isn&#039;t really hard. getting a flat in phase and ideal sound-stage at those levels is hard..hence my old setup you &quot;wasn&#039;t impressed with&quot; didn&#039;t meter into the high 150s because i tweaked and tuned it to be as flat as possible with as wide a bandwidth as possible. not to peak at the trucks resonance.in the old days with the older drivers, they used to be typically under motored and have very low MMS and farily non-linear stiff suspensions and did very well typically in 7-8 cubes for a 15. it was quite common to use 8 cubes for an 18 and 5 cubes for a 15.times have changes, suspensions are MUCH better and speakers in general are much better built and more linear and require smaller boxes.typically a SPL woofer is designed to take advantage of the HUGE efficiency gains of larger boxes and ports to beable to have VERY low QTC. the down fall is its typically only 5-10hz of usable bandwidth.10 years ago what was high-end is midrange technology wise.</blockquote>

[QUOTE="Papermaker85, post: 8483166, member: 572595"] it could be alot of reasons. measuring peak output over a small range/bandwitdh isn't really hard. getting a flat in phase and ideal sound-stage at those levels is hard..hence my old setup you "wasn't impressed with" didn't meter into the high 150s because i tweaked and tuned it to be as flat as possible with as wide a bandwidth as possible. not to peak at the trucks resonance. in the old days with the older drivers, they used to be typically under motored and have very low MMS and farily non-linear stiff suspensions and did very well typically in 7-8 cubes for a 15. it was quite common to use 8 cubes for an 18 and 5 cubes for a 15. times have changes, suspensions are MUCH better and speakers in general are much better built and more linear and require smaller boxes. typically a SPL woofer is designed to take advantage of the HUGE efficiency gains of larger boxes and ports to beable to have VERY low QTC. the down fall is its typically only 5-10hz of usable bandwidth. 10 years ago what was high-end is midrange technology wise. [/QUOTE]

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