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View Full Version : Why the difference between WinISD versions and BassBox?? Pictures Included rare curve



mledez
12-23-2008, 11:34 PM
Hi,

I decided to change my sub (Image Dynamics ID12D2 V3), So I bought Focal 40 V1 16" Driver...

Taking a look at the user manual I noted the suggested aplication values.. All number in liters and Hz

Fast and Tight Bass 40L Fb 25 F3 46
Punchy and Dynamic Bass 50L Fb 23 F3 43
Deep and Articulate Bass 60L Fb 20 F3 40

http://i266.photobucket.com/albums/ii247/mledez/2008-12-23_234426.jpg

So I decided to check the curves and make some changes to create my new box... But WTF

The curves in WinISD are exactly *** focal but BassBox and WinISD Pro show me something very rare

What's happening???

The green line is my model

WinISD
http://i266.photobucket.com/albums/ii247/mledez/WinISD-1.jpg

Yellow 40L Fb 25 F3 46
Blue 50L Fb 23 F3 43
Red 60L Fb 20 F3 40
Green 62L Fb 34 F3 39

WinISD Pro
http://i266.photobucket.com/albums/ii247/mledez/2008-12-23_233935.jpg

Yellow 40L Fb 25 F3 61
Blue 50L Fb 23 F3 56
Red 60L Fb 20 F3 52
Green 62L Fb 34 F3 54

BassBox Pro
http://i266.photobucket.com/albums/ii247/mledez/2008-12-23_232807.jpg

Yellow 40L Fb 25 F3 67
Blue 50L Fb 23 F3 59
Red 60L Fb 20 F3 55
Green 62L Fb 34 F3 58

Please give me a hand!!! What do you think?
Don't look my english

swx1042
12-25-2008, 06:01 AM
i don't know for sure. maybe its the air and temperature options in Win ISD Pro, air density, humidity, air pressure, air temperature.


thats just me taking a shot in the dark at guessing...

SPLEclipse
12-25-2008, 07:22 AM
isn't this your second post about this?

anyway..they all say the same darn thing. look at the scale in dB on the left side. the "regular" winisd just compresses it to give a more reasonable view (notice that there is no numbering). winisdPRO and bassbox give you a more detailed but wider range.

stop worrying about the computer graphs for christ sake. they aren't accurate for a car environment.

mledez
12-25-2008, 12:25 PM
i don't know for sure. maybe its the air and temperature options in Win ISD Pro, air density, humidity, air pressure, air temperature.


thats just me taking a shot in the dark at guessing...


isn't this your second post about this?

anyway..they all say the same darn thing. look at the scale in dB on the left side. the "regular" winisd just compresses it to give a more reasonable view (notice that there is no numbering). winisdPRO and bassbox give you a more detailed but wider range.

stop worrying about the computer graphs for christ sake. they aren't accurate for a car environment.

Problem Solved, The problem was a bad inductance value in BBPro and WinISD Pro.