Good program to design boxes
09-30-2009, 10:34 PM
#3
for beginners, use RE Audio's Enclosure Calculator, which can be found our their website. I dont suggest using it if you are aiming for specific results, because it has several flaws. For daily use, it'll do the job
10-01-2009, 06:57 AM
#4
WinISDPro is actually the better choice. it also calculates cone excusion and allows for adding filters and also VC temperature..
watch it though.. cause drivers and projects between winISD and winISDpro are not interchangeable..
let me know if you need help with it. I have used it many times.
Zoomer
watch it though.. cause drivers and projects between winISD and winISDpro are not interchangeable..
let me know if you need help with it. I have used it many times.
Zoomer
10-01-2009, 07:12 AM
#5
I notice no program comes to the same calculations... RE, WinISD, or BB6P. What to believe....
10-01-2009, 10:16 AM
#6
10-01-2009, 10:37 AM
#7
How are you measuring anyway? 2hz out of 50 hz is hard to measure!
How accurate are your TS parameters and what is the production variation?
are you taking into account the following:
sub volume
temperature rise of vc
humidity
10-01-2009, 11:03 AM
#8
let me use an example.
you type in your measurements to the RE enclosure calculator and it spits out a 2.5 cubic foot enclosure tuned at 35.2578xxx hz
if using pen and paper, and an enclosure program (i have one that no one else has) the enclosure would come out to be 2.45 cubic feet tuned at 37hz
is it soo off that your going to hear a noticible difference? Probably not.
10-01-2009, 11:24 AM
#9
let me use an example.
you type in your measurements to the RE enclosure calculator and it spits out a 2.5 cubic foot enclosure tuned at 35.2578xxx hz
if using pen and paper, and an enclosure program (i have one that no one else has) the enclosure would come out to be 2.45 cubic feet tuned at 37hz
is it soo off that your going to hear a noticible difference? Probably not.
you type in your measurements to the RE enclosure calculator and it spits out a 2.5 cubic foot enclosure tuned at 35.2578xxx hz
if using pen and paper, and an enclosure program (i have one that no one else has) the enclosure would come out to be 2.45 cubic feet tuned at 37hz
is it soo off that your going to hear a noticible difference? Probably not.
As for the calculated difference. You would have to check what both programs are doing to see why they are off.. subtle things such as:
Port end correction
driver volume
thermal expansion of wood (maybe up to .5% per degree C) so your box volume from -10C to 30 C would be several percent.. but we never consider this.
Try using WinISDPro and add VC temperature say of 100deg C or more. you would be surprised at how much the sub response changes.!
Others???
Plus.. rememmber why your are tuning a sub to a certain frequency? in order to be a match for your in car gain.. which is also an inprecise number!
10-01-2009, 11:29 AM
#10
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