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Box Design with WinISD help


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mrdragon 
Copper - Posts: 121
Copper spacespace
Joined: October 08, 2003
Location: Australia
Posted: January 11, 2005 at 2:57 PM / IP Logged  
Hi guys,
Try to design my Pioneer TSW305C with WinISD....and this is results:
Box Design with WinISD help - Last Post -- posted image.
From what i heard the graph "yellow" line need to be with 0db to -3db, as it show on this design the line is way over, wat r another alternatives so that the yellow line r within 0db to -3db???
Cheers :)
Drewt 
Copper - Posts: 183
Copper spacespace
Joined: January 04, 2005
Location: United States
Posted: January 11, 2005 at 3:53 PM / IP Logged  
put it in a sealed box
mrdragon 
Copper - Posts: 121
Copper spacespace
Joined: October 08, 2003
Location: Australia
Posted: January 11, 2005 at 4:02 PM / IP Logged  
Nope seal is even worse!!!
DYohn 
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Joined: April 22, 2003
Location: Arizona, United States
Posted: January 11, 2005 at 4:34 PM / IP Logged  
Looks to me like your enclosure is too large.  Why did you use 78.4 litres when the Pioneer recomendation for a ported enclosure is 49.7 litres?
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mrdragon 
Copper - Posts: 121
Copper spacespace
Joined: October 08, 2003
Location: Australia
Posted: January 11, 2005 at 5:24 PM / IP Logged  
Ok this is what Pioneer recommended...i see not much of a diff :(
Box Design with WinISD help - Last Post -- posted image.
DYohn 
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Joined: April 22, 2003
Location: Arizona, United States
Posted: January 11, 2005 at 5:56 PM / IP Logged  

Here's the curve I get from WIN ISD using the correct driver parameters (that I posted in your other thread.)

Box Design with WinISD help - Last Post -- posted image.

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mrdragon 
Copper - Posts: 121
Copper spacespace
Joined: October 08, 2003
Location: Australia
Posted: January 11, 2005 at 9:53 PM / IP Logged  
DYohn here is the Pioneer sub TWS-305C (SVC)Thiele/Small specs of the driver....
Pioneer TS-W305C
Size: 12"
Nominal Power: 400W
Max Power: 800W
Impredance: 4 Ohms
Sensivity: 89dB/W
Frequency: 18-2,000Hz
Displacement: 0.083cu.ft
Recv: 3.0
Levc: 2.107
Fs: 32.7
Qes: 0.348
Qts: 0.340
Vas: 1.875cu.ft
Rms: 1.875
Mms: 138.20
Cms: 1.717x10 -4
Diam: 242cm
BL: 15.988
Xmas: 9.2mm
Pioneer recommend enclousure volume for sealed is: 1.5cu.ft
and vented is 1.65cu.ft + 3" port x 6" length
Can you double check for me????
Thanks :)

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