| Author |
Thread: WinISD |
    
Silver Member Username: Ducka
Shelby Township,
MI
United States
Post Number: 263
Registered: Jan-08
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| Posted on Tuesday, April 22, 2008 - 10:12 pm: |
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Hey guys,
How accurate is that winISD program... If any of you even use it. I think the point of it is to find the optimum tuning frequency for your box and subs and what the SPL of that will be.
Anyway, I put in all of the information for my subs and box and whatever, but for the plot section(where it says SPL it says to enter power and distance. I am not sure what to enter for those places. I just threw in 20ft at 1200W just as a guess and when i finally finished entering all of that in i checked the SPL part and it said that It peaked at 107.72dB @40.31Hz.(the SPL seemed low, but the Hz seemed good).
I put in 2 alpine type-r 12s and a 4 cube box 33x14x25.75. (tuned to 35hz)
Does the SPL seem low to anyone? I went to a comp the other day[without my car  ] and when i listened to cars that were being metered i kind of expected to be around 130dBs from what I heard.
Can anyone give me some insight?
Thanks,
Kevin |
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Silver Member Username: Goodie_goop
Mid town,
Texas
U.S.
Post Number: 864
Registered: Oct-06
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| Posted on Tuesday, April 22, 2008 - 10:44 pm: |
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i myself have never used the program but i figure distance would be something like 5ft. since that is about how far a normal person would sit from the subs in a car...and 20ft would be outside of the car.... |
Silver Member Username: Ducka
Shelby Township,
MI
United States
Post Number: 265
Registered: Jan-08
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| Posted on Tuesday, April 22, 2008 - 11:06 pm: |
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okay at 5ft I am getting 119.78dB @39.63Hz. How does that sound to everyone? Still seems just a tad low(perhaps just wishfull thinking). |
Gold Member Username: •cam•
BC
Canada
Post Number: 2433
Registered: Nov-06
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| Posted on Wednesday, April 23, 2008 - 12:06 am: |
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I think it will be WAY off. If I remember correctly, WinISD doesn't even take cabin gain into account. |
Silver Member Username: Ducka
Shelby Township,
MI
United States
Post Number: 266
Registered: Jan-08
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| Posted on Wednesday, April 23, 2008 - 12:10 am: |
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Cam, do you think it will be off as in lower than it would be in real life or what?
Does anyone know of a more accurate downloadable program for checking this? |
Silver Member Username: Ducka
Shelby Township,
MI
United States
Post Number: 267
Registered: Jan-08
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| Posted on Wednesday, April 23, 2008 - 08:33 pm: |
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Bump Bump Bump it up  |
Gold Member Username: •cam•
BC
Canada
Post Number: 2436
Registered: Nov-06
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| Posted on Thursday, April 24, 2008 - 12:16 am: |
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It will probably be louder in real life. I doubt anything will get exact. Especially none of the free or cheap ones. |
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