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DVC385 Vented Sub

post #1 of 5
5/8/12 at 5:50pm
Thread Starter 
Somehow find myself addicted to WinISD. I don't know how many hours I have spent playing around in there.

So.. the DVC385 is on sale at PE..

I'm gonna need it for the F-20, but I thought it might be fun to design something myself just for kicks.

Can you guys see if I have done this correctly and give me your thoughts? Keep in mind this is my first try, thanks!

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post #2 of 5
5/8/12 at 8:05pm
What are you using for power? It's always best to try and model with whatever high pass filter you will have in use. I think you're good otherwise.
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post #3 of 5
5/9/12 at 3:47am
Thread Starter 
Thanks, Jay. I'm not sure about power, but I was thinking the NU1000DSP might would work well. It would provide 430w at 8 ohms bridged.

I didn't realize the highpass would effect the output. What should I use to determine the highpass? Just somewhere above the point where the excursion exceeds xmax?

Thanks again,
Tim
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post #4 of 5
5/9/12 at 11:28am
Quote:
Originally Posted by Mr.Tim View Post

Thanks, Jay. I'm not sure about power, but I was thinking the NU1000DSP might would work well. It would provide 430w at 8 ohms bridged.

I didn't realize the highpass would effect the output. What should I use to determine the highpass? Just somewhere above the point where the excursion exceeds xmax?

Thanks again,
Tim

The DVC is dual 8ohm, so you would have either a 4ohm or 16ohm load from it. The RMS power handling is only 350 watts, so be careful if you have things cranked for extended periods with a high power amp. I think the lowest HPF you can set on the NU DSP amps is 20hz? The goal with a HPF is to keep cone excursion below tune in check, and you also want to see if your air velocity will drop a bit, 17ms is what you want to shoot for.

The Bash 300 watt and SA250 amps are good matches for the DVC. They booth have HPF's at about 18hz. A single channel from the NU1000 should also work well.
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post #5 of 5
5/9/12 at 4:26pm
Thread Starter 
Ok, cool. The plan is to run a pair of F-20s if I ever get the theater done, so I had originally thought to go that route. The bash at 18Hz would be a better choice, I think.

Specs say the iNuke will do 320w at 4 ohms, which is a nice fit. WinISD says over 109db @ 20hz with the high pass at 20Hz.

Specs for the iNuke says response is from 20Hz, but I can't seem to find out if you can actually set the high pass lower than 20Hz (and if it will actually play that low).

Appreciate all your help. I realize these are some basic questions.

Tim
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