Dayton Audio 21" Pro driver - Page 3 - AVS Forum | Home Theater Discussions And Reviews
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post #61 of 65 Old 06-26-2020, 07:24 PM
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Yep, I need to order a pair of these.







Or 4.
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post #62 of 65 Old 06-28-2020, 08:55 PM
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modeling

Did some modeling with other speakers.
Green-New Dayton 21 inch 9 cubic feet tuned to 26Hz
Blue-Dayton sealed
Red-Lavoce San214.50 in a vented 2.5 cubic feet tuned to 33 Hz
Black-B&C 21DS115 8 ohm in a 2.275 cubic foot box tuned to 30 Hz.
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If bad sound were Faital, good sound would be almost impossible
Killed two Mach5 21s and three UM-18s (and counting?)
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post #63 of 65 Old 06-29-2020, 12:25 AM
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Quote:
Originally Posted by bebb View Post
Did some modeling with other speakers.

Blue-Dayton sealed
.
What size box? And how much power?
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post #64 of 65 Old 06-30-2020, 10:26 AM
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I sent an e-mail to the Dayton Audio team regarding the Xmech of the PSS555-8.


I received an e-mail back this morning stating the Xmech of the driver is 24mm.


I have asked to confirm this is one-way Xmech, with a total peak-to-peak of 48mm, but I am fairly confident from my free air testing that 24mm one-way Xmech is true. I cannot see a 12mm one-way Xmech being the case since 70% BL is 11mm.



That means that even though the 70% BL spec'd Xmax is 11mm, you don't actually run out of mechanical excursion until more than twice that value. Depending on the travel limitations imposed by the spider and surround, this may actually be a bottomless design, which is perfect for my intentions. Even if the coil is able to impact the back plate, unless you are pumping WAY too much power through it, I don't see it having enough motor force at the limits of Xmech to have an appetite for destruction. You'd more than likely melt the coil before mechanical damage would happen.



This driver just keeps looking better and better.


I will keep you posted when I receive the confirmation e-mail that it is 24mm one-way.
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post #65 of 65 Old 07-01-2020, 10:19 AM
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Confirmed 24mm one-way Xmech, 48mm peak to peak!
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