I have been looking at putting two different drivers in my car that both have a unique "problem" in that WinISD and BCAE box calculators seem to recommend extremely small volumes (at a Qtc of .7)
The first driver is a SoundSplinter RL-p12 D4; the sealed volume I get is 0.300cuft...while Mike recommends 1.25-1.35cuft.
Qts 0.219
Qes 0.242
Qms 2.266
Fs 18.856 Hz
Res 6.26 Ohms
Ls 7.382 m
Lp 9.456 m
Rp 14.68 Ohms
Dia 250 m
(% shift) 33.20%
Vas 142.7 L
Mms 168.8 g
Cms 421.9 u
Bl 22.74
n0 380.1 m
Xmag 26.0 mm
Xsus 24.2 mm
Xmax 24.2 mm
SPL/Sensitivity 87.79 dB
Added mass 212 g
The other driver is a Dayton RS180; the sealed volume I get is 0.013cuft.--I have seen various recommended volumes for an enclosure for this mid and none are anywhere near 0.013cuft.
Specifications: *Power handling: 60 watts RMS/90 watts max *VCdia: 1.5" *Le: .90 mH *Znom: 8 ohms *Re: 6.4 ohms *Frequency range: 40-2,200 Hz *Fs: 38 Hz *SPL: 87.6 dB 2.83V/1m *Vas: .88 cu. ft. *Qms: 2.00 *Qes: .47 *Qts: .38 *Xmax: 6 mm *Dimensions: A: 7-1/8", B: 5-3/4", C: 3-5/8"
Can someone please explain to me what is going on?
The first driver is a SoundSplinter RL-p12 D4; the sealed volume I get is 0.300cuft...while Mike recommends 1.25-1.35cuft.
Qts 0.219
Qes 0.242
Qms 2.266
Fs 18.856 Hz
Res 6.26 Ohms
Ls 7.382 m
Lp 9.456 m
Rp 14.68 Ohms
Dia 250 m
(% shift) 33.20%
Vas 142.7 L
Mms 168.8 g
Cms 421.9 u
Bl 22.74
n0 380.1 m
Xmag 26.0 mm
Xsus 24.2 mm
Xmax 24.2 mm
SPL/Sensitivity 87.79 dB
Added mass 212 g
The other driver is a Dayton RS180; the sealed volume I get is 0.013cuft.--I have seen various recommended volumes for an enclosure for this mid and none are anywhere near 0.013cuft.
Specifications: *Power handling: 60 watts RMS/90 watts max *VCdia: 1.5" *Le: .90 mH *Znom: 8 ohms *Re: 6.4 ohms *Frequency range: 40-2,200 Hz *Fs: 38 Hz *SPL: 87.6 dB 2.83V/1m *Vas: .88 cu. ft. *Qms: 2.00 *Qes: .47 *Qts: .38 *Xmax: 6 mm *Dimensions: A: 7-1/8", B: 5-3/4", C: 3-5/8"
Can someone please explain to me what is going on?
Something is really wrong with those specs, make sure there right
i have bass box pro and i also get a very small size.
i have bass box pro and i also get a very small size.
Thanks for looking into it, but I am pretty sure they are right. Crazy how the two drivers I am pretty sold on from reviews have this problem. I double checked the specs and they still seem to be right. Here are links directly to them.
http://www.soundsplinter.com/specs/rlp12_specs.htm
http://www.partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=295-364
Anyone else have a thought on what is going on?
http://www.soundsplinter.com/specs/rlp12_specs.htm
http://www.partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=295-364
Anyone else have a thought on what is going on?
Look at the electrical Q of the 12. That low and it is going to give you a modeled sealed box very small. The designer proabably found that they work good anyway in the size he reccomends....
you put the numbers in wrong
you had WINisd set to liters when you put in the RS numbers, that is why you got such a small box. I tried the same thing and got the numbers you got. PE has their VAS in cuft, not liters. I would go with a .3cuft box (Q=.75) for the RS driver so you get a flatter response to 80Hz and a steeper acoustic rolloff. You are using the RS's as mids, so they don't need the lower extension.
The small Qts of the 12 will net you a small box, this is how it goes. Although I get a box size of .55 cuft with an F3 of 60Hz out of WINisd.
you had WINisd set to liters when you put in the RS numbers, that is why you got such a small box. I tried the same thing and got the numbers you got. PE has their VAS in cuft, not liters. I would go with a .3cuft box (Q=.75) for the RS driver so you get a flatter response to 80Hz and a steeper acoustic rolloff. You are using the RS's as mids, so they don't need the lower extension.
The small Qts of the 12 will net you a small box, this is how it goes. Although I get a box size of .55 cuft with an F3 of 60Hz out of WINisd.
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