Subwoofer driver from around 20Hz to 200Hz (single 12" or dual 10" per ch)

[LineSource]

Attached ported 120 liter WinISD plot for 12" Dayton RSS315HFA woofer in 4-ohm and 8-ohm.

--Extensively vented motor eliminates power compression and allows quiet excursion
--Lighter weight black anodized aluminum cone minimizes moving mass
--2 layer coil for reduced back EMF
--Triple shorting ring motor for ultra low distortion

You know speaker physics: without active equalization you can only optimize 2 of 3 design goals
small size;
deep bass;
high efficiency.

 

[cspieker]

For what it's worth, I'm using that dayton 12" hf up to 500hz, and I love it. Measure great too, although I've never done distortion measurements. With a very steep xo though. I have some expensive 10" woofers sitting on the shelf, can't recall the model. They should have been better, but didn't sound nearly as good to my ears. My theory is that the very stiff cone and massive motor are a better match to the aluminum dome compression driver they are crossed to.

 

[analyze_it]

Thanks for your thoughts, inspiration and time!
I think that this topic is really interesting for me and many others!