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Box Design with WinISD help

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=47461
Printed Date: April 26, 2024 at 1:20 PM


Topic: Box Design with WinISD help

Posted By: mrdragon
Subject: Box Design with WinISD help
Date Posted: January 11, 2005 at 2:57 PM

Hi guys,
Try to design my Pioneer TSW305C with WinISD....and this is results:
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 :)



Replies:

Posted By: Drewt
Date Posted: January 11, 2005 at 3:53 PM
put it in a sealed box




Posted By: mrdragon
Date Posted: January 11, 2005 at 4:02 PM
Nope seal is even worse!!!




Posted By: DYohn
Date Posted: January 11, 2005 at 4:34 PM
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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Posted By: mrdragon
Date Posted: January 11, 2005 at 5:24 PM
Ok this is what Pioneer recommended...i see not much of a diff :(
posted_image




Posted By: DYohn
Date Posted: January 11, 2005 at 5:56 PM

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

posted_image



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Posted By: mrdragon
Date Posted: January 11, 2005 at 9:53 PM
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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