Question about Lanzar Car Audio & Video
Lanzar 200 watt rms sub. Should i go with a ported box and dimensions should a rectangular box be.
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Posted on Jan 02, 2017
Any kind of enclosure that will hold four 15 lanzar in the back of my 1999 GMC S15 SUV.I would like to have the big tom drops for SPL.Also i will be playing some music form time to time and still i need the big (BOOM) for the SPL.I have one amp going to my sub just for my subwoofer it's a 3000 crunch mono amp.Lanzar say there woofer works bets with ports in the box. I just trying to fine out what is the best way to go for the big boom.
Posted on Jan 28, 2008
SOURCE: High x-max vs. high sensitivity
Sensitivity is a representation of efficiency. The higher the efficiency, the better the sound quality.
Xmax is a measure of the "throw of the cone peak to peak. This is a direct representation of the volume of air the subwoofer will displace..
A High X.Max subwoofer will displace more air - and therefore produce more SPL in a vented enclosure.
Sensitivity on these subs aren't crucial, because the customer is looking for LOUD and will purchase a large class D Mono amplifier to power it - characteristically low in sensitivity as well due to the way the power is inverted. Highly efficient, yet low sensitiviy.
I am definately a basshead! My show car has (4) 15" Cerwin Vega Stroker PROs. (one of the most highly EFFICIENT high xmax subs available) (86dB). (36-44mm Xmax (adjustable for SQ or SPL)
If you are looking for SPL, High XMax, Low sensitivity, and lots of power is the way to go. Generally, to increas SPL by 3dB, yuo must either increase surface area of driver 2x or double the input power. Slot ports, aeroports, and loaded horn ports can also increase your dB level by up to 3dB as well.
Properly constructed enclosures have an effect as well. Instead of wasting some of your power on vibrating the enclosure, it should be braced properly to reduce the wasted energy.
All of these tips will add tou your satisfaction of the product. You can make a $100 sub sound phenomenal in a proper enclosure, and a $400 sub sound like $hit in a prefab or poorly constructed one.
Your original question - with all things equal except the subwoofer, the subwoofer with the higher Xmax should yield the most SPL - due only to the fact of air displacement.
If you have additional questions or need clarification dont hesitate to ask.
Posted on Jan 15, 2009
Subwoofers differ in only one way. You get an "Open Air" and a "Closed air" subwoofer, That being said, you'll have to check on your magnet which one you have to make the boxes for that sub. If it is an "Open air" Subwoofer, you should see a "wire mesh" or "grid" in the centre, at the back of the magnet. If it is a "Closed air", the magnet will be solid with no hole whatsoever.
If it is a "Open air" sub, your boxes should be sealed with silicone, and no ports are to be cut in your box.
With "Closed air" subs, you should have 2 ports below your sub and the port sizes should be around 50mm in diameter. You should start with a 100mm long piece in the one box and add 50mm increments to "tune" the port up to 250mm, depending on the frequency of bass you require.
On a 15 inch subwoofer ranging between 80Hz and 120Hz, the box size required should be around 27 liters, meaning that you will end up with a box of 16 inches high, x 16 inches wide, x 16 inches deep. Or 320mm high, x 320mm wide, x 320mm deep.
Posted on Dec 02, 2009
Length (L) = 31.9 cm =
12.6 inches (approximately 12 1/2 inches)
Width (W) = 51.5 cm = 20.3 inches (approximately 20 1/4 inches)
Depth (D) = 19.7 cm = 7.76 inches (approximately 7 3/4 inches)
Posted on May 04, 2010
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