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Old 01-20-2003, 05:29 AM   #1
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T/S Parameters for Pioneer TS-W303F

Hi,

I just got hold of 2 Pioneer TS-W303F 12' subs..
Now searching the web for the T/S parameters. But can't find next to nothing.
They are free-air subs, but I want them enclosed in a box

Anyone know where I can get hold of these parameters ?

TIA
Greetz,
Raas
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Old 01-21-2003, 07:48 AM   #2
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ok.. got them... now what....?

Okay..
So I didn't search very well because they where on the web somewhere...

Here it goes...

Qms = -0,698
Qes = 0,323
Qts = 0,60
FS = 35 Hz
Vas = 94
RMS = 160w
Peak = 500w
Db/1w/1m = 93 Db
Resistance = 4ohm

I've plotted these figures in WinISD-Beta and it calculates to get me a 350 Liter sub-box. The -3DB dropoff then occurs at 20Hz (pretty deep, and 23Hz and up it remains pretty flat)

When I want a box of say 60 liters the -3Db roloff hapens between 70 and 80 Hz which is way to high...
(and this is strange, 'cause I found something on the web, which said that, if these subs where installed in a sealed 45 liter box, they sounded really good.. now.. If I calculate this in WinISD, the 3Db rolloff hapens at 100+ HZ)

Could due to the nature off these subs, because they're designed to be "Free-Air" -subs.. But isn't there some way to use this in vented box ??
I have 2 off these and maximum volume I want to give to both off these is say 120 liters.. (need some space in the thrunk...)

I cannot mount these subs "free-air" 'cause my car is a sedan, and there simply isn't enough space to put these in.

Am I doing something wrong here or what ?
Maybe someone else can put the T/S params in some other program and proove me wrong

Thanks in Advance
Greetz,
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