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Showing content with the highest reputation on 04/01/2010 in all areas

  1. 2 points
    Here's what TermPak has to say about it: "When designing a vent, you should try to keep the vent air velocity value as low as possible. Otherwise, vent turbulence and other audible artifacts may be heard. Ideally, you would use a vent with a very large surface area to keep the vent air velocity low. This would work because vent air velocity is directly related to the area of the vent being used. Unfortunately, the larger the vent area, the longer the vent length needs to be for a given tuning frequency. In reality, large area vents usually need to be so long that they’re just not practical. Because of this, many designers are forced to trade-off vent air velocity for vent length. Typically, audiophiles recommend keeping the vent air velocity below 5% of the speed of sound. This is not very realistic in autosound installations where enclosure volumes are usually pretty small. At Wayne Harris Enterprises, we have determined that a vent air velocity as high as 12% is acceptable for most installations. With an Aeroport, the vent air velocity can be as high as 20% without running into significant problems." I hope this may help to explain it.
  2. 1 point
    Ouch, really? I think you should ponder doing something different with the install if you need to exaggerate everything that much...
  3. 1 point
    I agree, just sell it and go buy a second battery or a better alternator, caps just strain your alternator.
  4. -1 points
    the q is not an """"SQL"""" subwoofer, it is a sq subwoofer. it was not at all intended to get loud. to the o.p. get the bl, tune low and build a good box inside fi's recommendations shut up idiot. it aint a true sq sub you dumbass...... when have you ever heard of a true sq woofer with an rms rating of 1000. get real. dont correct me.
  5. -1 points
    fyi when have you heard a sub off of 1000 watts that didnt get loud. just because you whore this forum doesnt mean you know shit.....
  6. -1 points
    Already had this one in WinISD so... Even with 2.25 cu ft @ 32Hz, there's a 3dB peak centered at 65Hz...that'll take some serious EQ to get rid of unless you want the super peaky response. Devote that same space to a 2.5 sealed, and you're at the same F3 and a decent Qtc. A 10 cu ft ported box makes a dead flat curve, so this is not a small- or even medium-box sub, which is why I passed on it. I was considering one or two (or the PWE version) for IB, though
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