Creative Sound Solutions SDX 10" Ported with Bash 300 - diyAudio
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Old 4th March 2012, 01:21 AM   #1
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Default Creative Sound Solutions SDX 10" Ported with Bash 300

This is my first DIY sub, and first post on the forum. After 3 weeks of messing around in the garage I came up with a decent result. Output so far seems great, but I may need some adjusment on the HPF. When testing the sub using the opening explosion in Hurt Locker and opening scene in War of the Worlds it bottomed out a few times. Not prolonged, but audible.

I think I need some guidance at this point. I modeled this using Unibox. Here are the particulars:

2.5L
Tuned to 22hz +/-
4" x 25.25" port flared on both ends
F3 of 20 hz or so

According to the modeling this will hit XMAX around 19hz. The Bash 300 comes with a stock 17.7 HPF that I thought would be sufficient to avoid XMAX. But maybe not......I was not sure if I created the HPF circuit using Bagely's circuit designer program correctly, when I imported it into Unibox. I am using the LFE input and have it crossed over at 80hz on my Marantz reciever. Here are my questions:

1. Does the LFE input bypass the 17.7 HPF on the Bash 300? If so I guess I need to used the Line Level Inputs in order to use the HPF.
2. If it does not, then it sounds as if I may need to raise the HPF. Right?

I welcome all thoughts and advice. Thanks in advance...
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Old 4th March 2012, 03:48 AM   #2
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Do you really mean that the enclosure is just "2.5 L" ????
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Old 4th March 2012, 05:09 AM   #3
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it cant be with a 4" x 25" port...unless the port is external...2.5 cu ft maybe?
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Old 4th March 2012, 08:49 AM   #4
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Yeah, 2.5cuft seems more likely.

Pictures!

Chris
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Old 4th March 2012, 10:13 AM   #5
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I 4th order 17.7Hz HP-filter should keep it from bottom out, according to WinISD Pro.
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Old 4th March 2012, 10:48 AM   #6
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Default oops

Not sure what I was thinking or not-

The enclosure is 2.5 cubic ft or about 72 Liters.
Thanks for the responses thus far.
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Old 4th March 2012, 10:52 AM   #7
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Quote:
Originally Posted by Rullknufs View Post
I 4th order 17.7Hz HP-filter should keep it from bottom out, according to WinISD Pro.
Hmmm. I thought so. Does the LFE bypass the HPF then I wonder on the Bash 300?

I'll post a some pics when I hit 5 posts and my restrictions are lifted.
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Old 4th March 2012, 10:56 AM   #8
just another
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Hi cptnjosh, you should be able to post pics whilst still under moderation. Just click the Go Advanced button, and you should be able to upload pics

Tony.
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Any intelligence I may appear to have is purely artificial!
Some of my photos
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Old 4th March 2012, 12:02 PM   #9
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Default PICS

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The finished is rolled on. If I could do it again I probably would have put some vinyl on it. The grill is a JL Audio Grill that was slightly modified to fit. No fasteners, just friction. I had to add an extra plate on the back for the Bash, as PE lists the wrong cutout dimensions on there website.
Overall I am pleased with my first project.

Last edited by cptnjosh; 4th March 2012 at 12:31 PM. Reason: PICS
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Old 4th March 2012, 02:17 PM   #10
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Yes, they look funny. They are in 16:9 aspect.
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