started here at the old forum:
https://diy.midwestaudio.club/discussion/3040/subwoofer-build
Now finished, but yet untested:
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Like the grill! The screws don’t detract imo. No rattles!
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That just looks like a beast. Looking back over the thread on the old forum, that’s a nicely over-braced box! Can’t imagine a cabinet gets much deader than that.
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Good looking build. I am a fan of matte black, that would fit right in my room.
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I managed to do some rudimentary testing today.
The grill has a strong resonance at 40Hz! I’m going to have to add silicone or glue or something to the slot where the metal grill sits in the wooden frame.
The Dayton GUI for the SPA500DSP works intuitively well.
Below is the closest thing I’m going to get to anechoic measurements.
HD taken at 12 inches:
Unequalized FR at 1 inch:
Equalized FR at 1 inch:
I meant to also post; damn thing weighs 64lbs!
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That looks great! Yeah I’m impressed with the software of the Dayton DSP sub amps, I have the 250 watt version I’m driving a CSS SDX10 sealed with.
Is that all? 64 isn’t light, but subs get heavy fast.
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I built a pair of 2 x 18 pro-sound subs that had curved grills. I was hoping the tension from the curve would be enough to keep them quiet, but I still had to add .75” wide weatherstripping between the grills and cabinets.
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If I’m not mistaken, the JBL bass bins I had the grills were set with the same soft rubber that modern windshields are set with. No buzzing even at very high volumes.
We used that stuff all the time in the installer industry. It holds really well and never dries. We always called it “spoo”. We would often put it between metal parts that were buzzing and it worked wonders.
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I’ve referred to it as dum dum. Good stuff to have around!
Is that like the stuff PE used to include with drivers?
I just use speaker gasket for the metal grills- doesn’t stick like gummy rubbery stuff and provides a good barrier.