Dayton Reference suitability...

loudnclear · 9th August 2008, 04:16 PM

Is the Dayton Reference HF 12" 4ohm subwoofer driver suitable for a downward firing configuration in a sealed box?

How much Xmax would I lose?

I have just about settled on this particular driver for my DIY sub.

Thanks in advance.

Wildcard26 · 10th August 2008, 01:30 AM

Hey there. I don't think the Dayton Ref. HF driver is good for down firing. You can use this here to find out for yourself:

http://www.partsexpress.com/resource...nt-up-down.cfm

mbutzkies · 10th August 2008, 02:49 AM

I do not recommend downfiring for a high quality woofer like the RS315HF. Downfiring adds a bias to the suspension which will add to distortion. It is very importance that BL, Kms, and Le are as symmetric as possible.

Plus, who doesn't like to see their woofers hit the low notes.

If the driver already puts out significant high order distortion, downfiring might help mitigate that.

loudnclear · 10th August 2008, 02:57 AM

Thank you for the replys. I will use the driver in a front facing design for the forementioned, recommended reasons. BTW, my calculations for a downfiring situation came out to about 3.5% sag (a little under 1/2mm) for the mentioned Dayton HF.

9th August 2008, 04:16 PM	#1
loudnclear diyAudio Member Join Date: Mar 2005 Location: Southeast	Dayton Reference suitability... Is the Dayton Reference HF 12" 4ohm subwoofer driver suitable for a downward firing configuration in a sealed box? How much Xmax would I lose? I have just about settled on this particular driver for my DIY sub. Thanks in advance.

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10th August 2008, 01:30 AM	#2
Wildcard26 diyAudio Member Join Date: May 2006	Hey there. I don't think the Dayton Ref. HF driver is good for down firing. You can use this here to find out for yourself: http://www.partsexpress.com/resource...nt-up-down.cfm

10th August 2008, 02:49 AM	#3
mbutzkies diyAudio Member Join Date: Sep 2004 Location: earth	I do not recommend downfiring for a high quality woofer like the RS315HF. Downfiring adds a bias to the suspension which will add to distortion. It is very importance that BL, Kms, and Le are as symmetric as possible. Plus, who doesn't like to see their woofers hit the low notes. If the driver already puts out significant high order distortion, downfiring might help mitigate that.

10th August 2008, 02:57 AM	#4
loudnclear diyAudio Member Join Date: Mar 2005 Location: Southeast	Thank you for the replys. I will use the driver in a front facing design for the forementioned, recommended reasons. BTW, my calculations for a downfiring situation came out to about 3.5% sag (a little under 1/2mm) for the mentioned Dayton HF.

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