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I am curious why for example... In winISD I take 2 12's in 5 cubes ported and 100 inches of port it gives me X amount of port velocity . Now explain this. If I do 8 12's in a unichamber that is 20 cubes ported with 400 inches of port. So everything exactly 4 times so should hold the same port velocity.... The big unichamber box has a hair less than half of the port velocity . Now I know WinISD won't be 100 percent accurate on the port velocity BUT it has to be following some theory that I am not aware of (never really got into uniboxes)to show that it doesn't match the same velocity but exact same multiples of everything else. I even tried 4 100 inch ports in the unichamber box and still shows less than half as opposed to the smaller box with 2 12's. Any input.
-------------------- KING KONG aint got **** on me. WOW have been gone a long time. But I am back baby. Former 2003 meca MR5 world record holder. UGLY 1991 brown explorer, BUT was able to do 151 on cert. lin x at the head rest at 42hz!(with cheap audiobahn 15s with about 60 percent of the power allowed that year. lol) Posts: 1123 | From: Indianapolis, In, USA | Registered: Jul 2001
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PS Seems like back in the day I heard there was odd things on using multiple woofers in one box. And it kinda does honestly. I want to up my velocity some
-------------------- KING KONG aint got **** on me. WOW have been gone a long time. But I am back baby. Former 2003 meca MR5 world record holder. UGLY 1991 brown explorer, BUT was able to do 151 on cert. lin x at the head rest at 42hz!(with cheap audiobahn 15s with about 60 percent of the power allowed that year. lol) Posts: 1123 | From: Indianapolis, In, USA | Registered: Jul 2001
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wtf? this forum use to be full of information. surely somebody can tell me
-------------------- KING KONG aint got **** on me. WOW have been gone a long time. But I am back baby. Former 2003 meca MR5 world record holder. UGLY 1991 brown explorer, BUT was able to do 151 on cert. lin x at the head rest at 42hz!(with cheap audiobahn 15s with about 60 percent of the power allowed that year. lol) Posts: 1123 | From: Indianapolis, In, USA | Registered: Jul 2001
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Have you changed the power input to the system?
-------------------- That was nothing. But, that's how it always begins . . . very small. Posts: 74 | From: Houghton, MI | Registered: Jun 2006
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You don't need to. you keep it the same. 4 times the subs and box equals 4 times the output even with same power. That is why if you double power and subs you gain 6db (4times). I discovered also in a given box if you double power it only increases port velocity a little less than half. i am sure both of these concepts are using the same theory. Just would like to knwo what it is
-------------------- KING KONG aint got **** on me. WOW have been gone a long time. But I am back baby. Former 2003 meca MR5 world record holder. UGLY 1991 brown explorer, BUT was able to do 151 on cert. lin x at the head rest at 42hz!(with cheap audiobahn 15s with about 60 percent of the power allowed that year. lol) Posts: 1123 | From: Indianapolis, In, USA | Registered: Jul 2001
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mathematically, through logarithm, doubling the energy in a system should yield a 3.01dB increase. In the real spl world, doubling power will get you 1.7-2.4dB
-------------------- World Record-Loudest SPL in my driveway Team Powermaster/XS-Power Hifonics Amps, Kicker subs-The way it should be....all were Stolen from me...boo hoo Zensky....World Domination at It's Finest www.zensky.com Posts: 3767 | From: Columbus, OH - formerly FL | Registered: Oct 2003
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