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Ported box help needed!!
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<blockquote data-quote="badazzDD" data-source="post: 125717" data-attributes="member: 545089"><p>Ok, i am in the process of building my box. First, i need to make sure i have all the tools needed..</p><p></p><p>MDF 3/4"</p><p></p><p>Jig Saw</p><p></p><p>Silicone</p><p></p><p>Wood Glue</p><p></p><p>Nail Gun</p><p></p><p>I am going to make a ported box for my JBL GTO1220's.. The recommended specs are 2.25 cu ft per sub with a port dimension of 4 in diamater, and 13.31 in long tuned to 30 hz.</p><p></p><p>Questions:</p><p></p><p>1. Do i need to make a 4.5 cu ft single chamber with 2 of these size ports for the 2 subs?</p><p></p><p>- if i make the box bigger and add in a 3rd, or even 4th port, will the SPL increase?</p><p></p><p>2. What is the best material to use for the circular ports?</p><p></p><p>-Would it be better/easier to make a slot ported box?</p><p></p><p>3. Do i need to secure the ports in place?</p><p></p><p>4. For the finishing touch, what other than carpet can i use? Anything spray on?</p><p></p><p>5. How do i tune the port???</p><p></p><p>Pretty much, everything i need is here: (exept the lengths of the wood)</p><p></p><p><a href="http://manuals.harman.com/JBL/CAR/Boxes%20and%20Parameters/GTO1220.pdf" target="_blank">http://manuals.harman.com/JBL/CAR/Boxes%20and%20Parameters/GTO1220.pdf</a></p><p></p><p>Thanks in advance for any help!</p></blockquote><p></p>
[QUOTE="badazzDD, post: 125717, member: 545089"] Ok, i am in the process of building my box. First, i need to make sure i have all the tools needed.. MDF 3/4" Jig Saw Silicone Wood Glue Nail Gun I am going to make a ported box for my JBL GTO1220's.. The recommended specs are 2.25 cu ft per sub with a port dimension of 4 in diamater, and 13.31 in long tuned to 30 hz. Questions: 1. Do i need to make a 4.5 cu ft single chamber with 2 of these size ports for the 2 subs? - if i make the box bigger and add in a 3rd, or even 4th port, will the SPL increase? 2. What is the best material to use for the circular ports? -Would it be better/easier to make a slot ported box? 3. Do i need to secure the ports in place? 4. For the finishing touch, what other than carpet can i use? Anything spray on? 5. How do i tune the port??? Pretty much, everything i need is here: (exept the lengths of the wood) [URL="http://manuals.harman.com/JBL/CAR/Boxes%20and%20Parameters/GTO1220.pdf"]http://manuals.harman.com/JBL/CAR/Boxes%20and%20Parameters/GTO1220.pdf[/URL] Thanks in advance for any help! [/QUOTE]
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Ported box help needed!!
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