Speaker box design help - Home Theater Forum and Systems - HomeTheaterShack.com

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post #1 of 21 Old 01-13-14, 05:59 PM Thread Starter
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Speaker box design help

Hey there I trying to design a box to go in the back of a 96 ford ranger extended cab. I'm wanting it to sit on the little 6" curb to utilize the floor space for cargo and passengers legs. I also want to be able to use the rear fold down jumper seats which leaves me with about 16" in between them in the center. The highest I want to go is 21" which is at the lower edge of the rear slider window. The sub I'm using is the JBL GTO804. I want it to have the .6 cf (it's what's recommended). With a slot port tuned to 33 hz. I want the speaker front firing and the slot on top pointing up. I have come up with some box dimensions but I want to be sure I'm on the right track. Anyone have any suggestions or criticism??
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post #2 of 21 Old 01-13-14, 06:52 PM
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Re: Speaker box design help

For that small of a box you should have plenty of room. Have you checked out our enclosure calculator?
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post #3 of 21 Old 01-13-14, 07:00 PM Thread Starter
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Thanks for the link I haven't found it yet on the mobile app version. Ya I've been using the calculators. I've been hoping someone here has some experience with these subs
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post #4 of 21 Old 01-13-14, 07:28 PM Thread Starter
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I'm also having trouble with slot port tuning. Trying to figure out slot size with min area of 10 square inches but tuned down to 33hz just doesn't seem like it's going to happen. Like the length has to be awfully long
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post #5 of 21 Old 01-13-14, 08:00 PM
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Re: Speaker box design help

Likely not here, but have you tried diymobileaudio.com?
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post #6 of 21 Old 01-13-14, 08:03 PM Thread Starter
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Re: Speaker box design help

Not yet but I will thanks Sonnie
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post #7 of 21 Old 01-13-14, 08:06 PM
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Re: Speaker box design help

You are correct, it won't work. With your box dimensions the port will take up 513 cubic inches leaving you with a net volume of .34 cu.ft.




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post #8 of 21 Old 01-13-14, 08:09 PM Thread Starter
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But if I go smaller than 10square inches of area then I will encounter port noise correct
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post #9 of 21 Old 01-13-14, 08:13 PM
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Re: Speaker box design help

What amp will you use and does it have a subsonic filter?




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post #10 of 21 Old 01-13-14, 08:15 PM Thread Starter
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By the way mike. How did you figure that so fast. I have been working on this for a while now. Maybe you can help me design a box hint hint
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