Dayton Audio's New 15" & 18" PA Drivers - B&C Copies?

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O

OscarS

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Joined 2010
wg_ski said:
The Dayton looks more like the RCF basket and motor. They actually model a little better than the TBWs as a good fit for a large horn stack. But what we all are dying to find out is what the power compression is like. If you lose 3dB of output you might as well double the price of the driver - putting the B&C back on top. An inside/outside wound coil seriously increases the heat radiating area.
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Fixed it for you. ;)
 
NEO Dan

NEO Dan

Member
Joined 2008
The B&C split coil design is both inside out and the outer coil is also split at the top plate to smooth the BL curve.

I've also run the 18SW115-4 to the limits of the amp I have >360V P-P. Though I'd not recommend it for something like bass guitar, as a sub it's pretty happy as long as you observe some caution WRT prolonged clipping.
 
djk

djk

R.I.P
Joined 2001
"These are PA drivers"

With their large x-max no one would even thing of using these to reproduce midrange frequencies, the FMD would be horrible. 5mm peak excursion gives rise to 3% FMD when the driver covers one decade (100hz~1Khz. It makes vocalists sound like they are gargling.
 
4

454Casull

Member
Joined 2004
djk said:
"These are PA drivers"

With their large x-max no one would even thing of using these to reproduce midrange frequencies, the FMD would be horrible. 5mm peak excursion gives rise to 3% FMD when the driver covers one decade (100hz~1Khz. It makes vocalists sound like they are gargling.
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Just because they have relatively high Xmax doesn't mean that it needs to be used.

Does your contention not also cast down all the WG+woofer systems that are now the rage?

EDIT: Never mind. I see now that the product page liberally uses the word "subwoofer".
 
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djk

djk

R.I.P
Joined 2001
"high Xmax doesn't mean that it needs to be used"

Actually, it does.

Take the JBL 2226 used as a midbass-midrange driver, 80hz~1Khz. The cone will not pump enough air through the structure to cool the driver and it will burn the ends of the coil with way less than rated power.



Note the copper color in the middle, and the charred ends (not near the gap).
 
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badman

badman

Member
Joined 2003
pothaudio.com
djk said:
"high Xmax doesn't mean that it needs to be used"

Actually, it does.

Take the JBL 2226 used as a midbass-midrange driver, 80hz~1Khz. The cone will not pump enough air through the structure to cool the driver and it will burn the ends of the coil with way less than rated power.



Note the copper color in the middle, and the charred ends (not near the gap).
Click to expand...

Interesting, though I don't think it's an issue at home use levels. My cones never visibly move, but I use 12"s and 15"s in modest rooms. They are not high-passed, but thermal handling is never an issue.
 
J

jbell

Member
Joined 2003
yep
 

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J

jbell

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Joined 2003
I can tell you they sim really well. -- going in a flat to 30hz TH 1.5 sheets. (the 1.5 sheets gets TH and place to hold a 12+1 top, so I only have to bolt a single cabinet to the wall to hold bass plus mid/high)

A pair of them will be installed this coming week in a high school commons area, that gets used for dances. Will try to get some measurements in room. Don't have time for a full outdoor measurement on this go round.
 
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