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|17th June 2003, 08:05 PM||#1|
Join Date: Jun 2003
Location: In a house
Enclosure Design & Size
I need some help in working out the dimensions of the enclosure for my new sub. Which is a Focal Utopia 5Ws
I have 2 and they will be treated to an enclosure each. Here are the all the specs i have for the subwoofer.
FS = 44.6hz
Vas = 9 i
Qts = 0.36
Ques = 0.38
Qms = 5.51
Re = 5.2 ohms
Sd = 86.6 Cm2
Cas = 6443-10 m3/M
Mas = 197.4 kg/m4
Ras = 10047.9 ohm.ac
Cms = 859E-06 m/N
Mms = 14.8g
Rms = 753 kg/s
Ces = 261.5 uf
Les = 48.6 mH
Res =75.1 ohm
BI = 7.5
SPL = 85.1 dB/W/m
Focal say that the sub was designed for a vented enclosure and .3 cubic ft.
I havnt got the first clue about working out the sizes for a sub box, im not mathematically minded.
Would you be able to give me some pointers?
|23rd June 2003, 10:07 AM||#2|
Join Date: Nov 2002
first of all
----follow manufactures box specs----
if you can build a sealed box,build it,cos its much easier.its just gota be sealed with woodglue or whatever.And be the correct volume.
if you want a little more output,go for ported.the port length must be pretty exact.
i modeled a sealed box,i dont know if you can use a sealed box on this woofer or not-,but 15litres works out ok
im not sure what size the driver is,it seems small like 6.5inch.....its kinda hard to fit a tiny speaker onto a tiny box :P
i treid modeling it in winisd pro,but the ports are 30cm long(2inch pipe) ,for 49hz tuning in 10litres,thats kinda annoying and its late (for my part of world)
well theres a few ideas anyway
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