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Competition Newbie build help
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<blockquote data-quote="THATpurpleKUSH" data-source="post: 8738935" data-attributes="member: 615398"><p>30hz is too low for spl, you want the ports tuned to around your vehicle's resonant frequency which is the note that you will burp. A geo metro will prob peak in the upper 40s to low 50s. </p><p></p><p>Ports need a hard surface to load off, fire the ports to the side or rear</p><p></p><p>Multiple small ports are less efficient than a single port.</p><p></p><p>If you are serious about competing then use a single 6 or 8 inch port.</p><p></p><p>Lastly, buy an SPL meter if you dont already own one.</p><p></p><p>You need to do lots of testing, without owning a meter you are pretty much dead in the water.</p></blockquote><p></p>
[QUOTE="THATpurpleKUSH, post: 8738935, member: 615398"] 30hz is too low for spl, you want the ports tuned to around your vehicle's resonant frequency which is the note that you will burp. A geo metro will prob peak in the upper 40s to low 50s. Ports need a hard surface to load off, fire the ports to the side or rear Multiple small ports are less efficient than a single port. If you are serious about competing then use a single 6 or 8 inch port. Lastly, buy an SPL meter if you dont already own one. You need to do lots of testing, without owning a meter you are pretty much dead in the water. [/QUOTE]
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