Menu
Forum
General Car Audio
Subwoofers
Speakers
Amplifiers
Head Units
Car Audio Build Logs
Wiring, Electrical and Installation
Enclosure Design & Construction
Car Audio Classifieds
Home Audio
Off-topic Discussion
The Lounge
What's new
Search forums
Gallery
New media
New comments
Search media
Members
Registered members
Current visitors
Classifieds Member Feedback
SHOP
Shop Head Units
Shop Amplifiers
Shop Speakers
Shop Subwoofers
Shop eBay Car Audio
Log in / Register
Forum
Search
Search titles and first posts only
Search titles only
Search titles and first posts only
Search titles only
Log in / Join
What’s new
Search
Search titles and first posts only
Search titles only
Search titles and first posts only
Search titles only
General Car Audio
Subwoofers
Speakers
Amplifiers
Head Units
Car Audio Build Logs
Wiring, Electrical and Installation
Enclosure Design & Construction
Car Audio Classifieds
Home Audio
Off-topic Discussion
The Lounge
What's new
Search forums
Menu
Reply to thread
Forum
Car Audio Discussion
Subwoofers
what should I tune to
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Message
<blockquote data-quote="lord baccus" data-source="post: 6405863" data-attributes="member: 575878"><p>This new number is much easier to work around and would be very practical for a</p><p></p><p>full-size pickup (extended cab of course) or SUV with rear seats removed. The beauty</p><p></p><p>of this equation is that it works well in either direction. Say you have measured the area</p><p></p><p>to be sacrifice for the enclosure, then measure the distance from the woofer location1 to</p><p></p><p>the microphone position, this distance will help you find your target frequency. For</p><p></p><p>example if the distance is 5 feet, multiply the distance by 4 (to find full wave distance)</p><p></p><p>and then divide this number into the speed of sound (1131fps)</p><p></p><p>5 x 4 = 20 ft</p><p></p><p>1131/20 = 56.55 Hz</p><p></p><p>Once you have determined your wavelength distance and target frequency tune your</p><p></p><p>enclosure 5 – 10 Hz lower to take advantage of peak output. This margin may need</p><p></p><p>adjustment depending on the woofers ability to interact with the enclosure. It’s important</p><p></p><p>to keep in mind that this equation is for front firing enclosures as in the illustration.</p><p></p><p>Another event to observe in this illustration is how the output from the backside of the</p><p></p><p>woofer (red) will travel through the vent (yellow), begin reinforcing the output from the</p><p></p><p>front side of the woofer (orange) and finally the acoustical output will be at full potential</p><p></p><p>at the microphone (dark red). When your system is setup is correct, you will experience</p><p></p><p>similar results.</p><p></p><p>The only obstacles left are deadening the interior, sealing the vehicle’s leaks, and</p><p></p><p>proving enough current and voltage for the amplifiers2.</p></blockquote><p></p>
[QUOTE="lord baccus, post: 6405863, member: 575878"] This new number is much easier to work around and would be very practical for a full-size pickup (extended cab of course) or SUV with rear seats removed. The beauty of this equation is that it works well in either direction. Say you have measured the area to be sacrifice for the enclosure, then measure the distance from the woofer location1 to the microphone position, this distance will help you find your target frequency. For example if the distance is 5 feet, multiply the distance by 4 (to find full wave distance) and then divide this number into the speed of sound (1131fps) 5 x 4 = 20 ft 1131/20 = 56.55 Hz Once you have determined your wavelength distance and target frequency tune your enclosure 5 – 10 Hz lower to take advantage of peak output. This margin may need adjustment depending on the woofers ability to interact with the enclosure. It’s important to keep in mind that this equation is for front firing enclosures as in the illustration. Another event to observe in this illustration is how the output from the backside of the woofer (red) will travel through the vent (yellow), begin reinforcing the output from the front side of the woofer (orange) and finally the acoustical output will be at full potential at the microphone (dark red). When your system is setup is correct, you will experience similar results. The only obstacles left are deadening the interior, sealing the vehicle’s leaks, and proving enough current and voltage for the amplifiers2. [/QUOTE]
Insert quotes…
Verification
Post reply
Forum
Car Audio Discussion
Subwoofers
what should I tune to
Top
Menu
What's new
Forum list
