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<blockquote data-quote="Papermaker85" data-source="post: 8592100" data-attributes="member: 572595"><img src="http://i.imgur.com/wkHzzHU.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /><img src="http://i.imgur.com/9wTidar.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />The first driver was built strictly to sound good and have a ton of linear displacement that was able to do mid 140s at one ohm with a 3500 and high 140s with double the power. Still one of the best sounding woofers i&#039;ve ever heard. Very realistic. Very transiant, very natural. Only downfall is that design was lower sensitivity that&#039;s normally measured at 1khz although it was extremely sensitive below 40 Hertz I still managed to do nearly the same number at both 38 Hertz and 50 hertz so there was no lack of top-end just a lack and overall efficiency. that&#039;s what happens when you get wide bandwidth and low distortion. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif at least untill i build the prequal to this driver which will improve the sensitivity without sacrificing anything but it&#039;s going to be extremely costly and tricky.This particular coil is about 75% as long and slightly thicker. Xmax falls from 34mm to 22mm. This is still within Target in intended application&nbsp; and it still uses 10in Progressive spiders&nbsp; so it Still Remains a very linear driver .At this point i focused on lowering the mass increasing cone area while increasing the current carrying capability of the coil.This gave me 2db higher 1w1m sensitivity rating and will give slightly less power compession at tuning and near the xover..</blockquote>

[QUOTE="Papermaker85, post: 8592100, member: 572595"] [IMG]http://i.imgur.com/wkHzzHU.jpg[/IMG] [IMG]http://i.imgur.com/9wTidar.jpg[/IMG] The first driver was built strictly to sound good and have a ton of linear displacement that was able to do mid 140s at one ohm with a 3500 and high 140s with double the power. Still one of the best sounding woofers i've ever heard. Very realistic. Very transiant, very natural. Only downfall is that design was lower sensitivity that's normally measured at 1khz although it was extremely sensitive below 40 Hertz I still managed to do nearly the same number at both 38 Hertz and 50 hertz so there was no lack of top-end just a lack and overall efficiency. that's what happens when you get wide bandwidth and low distortion. [IMG]//content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif[/IMG] at least untill i build the prequal to this driver which will improve the sensitivity without sacrificing anything but it's going to be extremely costly and tricky. This particular coil is about 75% as long and slightly thicker. Xmax falls from 34mm to 22mm. This is still within Target in intended application and it still uses 10in Progressive spiders so it Still Remains a very linear driver .At this point i focused on lowering the mass increasing cone area while increasing the current carrying capability of the coil. This gave me 2db higher 1w1m sensitivity rating and will give slightly less power compession at tuning and near the xover.. [/QUOTE]

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