Im not sure if i can just give you the specs on the driver and then help me figure out port size from that or not but speaker specs are:
Re .975/3.9 (dvc 2 ohm)
Fs 19hz
Qes .271
Qms 4.59
Qts .256
Vas 143 litres
xmax 13.5 mm
spl 90.2 db
I have a box from a past project that is about 3 cu ft (subtracting driver volume already done). Is there any way I can mount these two drivers in this box (its sealed right now) then cut and install a port to make these drivers work with 1.5 cu ft of volume for each driver?
Any help or comments appreciated...
Thanks
You do not have complete T/S parameters. However your box tunes with a vent of 4" dia 2 ft long with two drivers. I estimated power at 500 watts for two and vent velocity is too high. If they are low power drivers you might get away with it. They are poor sub drivers for sealed and ported as they are low Qts. Your F3 is north of 40 Hz, so it is not a sub for HT, but might be alright in a car. You did not give the diameter of the drivers, the voice coil inductance or a usable sensitivity rating.
The only way you could make a decent sub with those drivers is with a massive horn.
Here is your data: -
Fs = 19 Hz
Qms = 4.59
Vas = 286 liters
Xmax = 13.5 mm
Qes = 0.271
Re = 4 ohms
Pe = 500 watts
Qts = 0.256
2.83-V SPL = 90.2 dB
-----------------------------------------
Box Properties
Name:
Type: Vented Box
Shape: Prism, square (optimum)
Vb = 3 cu.ft
Fb = 20.43 Hz
QL = 6.232
F3 = 42.84 Hz
Fill = minimal
No. of Vents = 1
Vent shape = round
Vent ends = one flush
Dv = 4 in
Lv = 24.13 in
