tunning a ported box

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09-08-2005, 12:53 AM

#41

BigBubba

500 Watt CAFz'r

Join Date: Apr 2005

Posts: 758

see I have used the same box in my car and hit a 145 even and then tossed it into a civic and hit a 141.8 .... then we tested a bunch ot diff freq..... and then tossed in an 80hz note and got the same freg response and then it was close to it.... a 143.7 it is definitely a vehicle specific idea that needs to be thought out...... and not just calculated

09-10-2005, 08:44 AM

#42

Dave MacKinnon

Guest

Posts: n/a

I think Loud Brown summed it up - similar in design or not, everything varies. Worse, I'd suggest that the speakers you are using vary from sample to sample more than you think.

So, you could theoretically build two seeming identical systems in two seemingly identical vehicles with drastically different results.

09-10-2005, 08:32 PM

#43

King Dynasty

500 Watt CAFz'r

iTrader: (-1)

Join Date: Oct 2004

Posts: 809

every panel in your car will make all the difference in your results , even if u left a old rag in the corner it can make u lose tenths . my Air freshner smells good but some times 10 of them will make me increse spl

good luck

09-14-2005, 01:18 PM

#44

Justin LaRouche

500 Watt CAFz'r

Join Date: Aug 2004

Posts: 678

Quote:

Originally posted by DWVW:
The world is ruled by physics, I am sure their is a formula out there that takes into account every possible variable. It's funny that alot of the loud Europeans seem to have engineering and science backgrounds.

i totaly agree with you. the entire universe works perfectly because of physics! the only time things seem to go wrong is when we make a mistake. why would we not use these laws if we want to do better!

i would say that being with'n .1 would be preaty darn difficult like menstioned above but if it wasn't possible to be that accurate with #'s were do you think astronauts would land if they were even half a degree of in there calculations of time and space?