Good HZ for a Ported Box

HI, Im building a box, Ported box for my subs (2 12" Kove argamedon)  and I was wandering What is a good HZ to tunned the box, I was thinging like 36HZ.   What do you guys think?

Oh these are the specs of my subs

*Power Handling: 800 watts RMS *VCdia: 3" *Le: 2.5 mH *Nominal impedance: 4 ohms per coil *Re: 3.0 ohms *Frequency response: 20-300 Hz. *Magnet weight: 192 oz. *Fs: 34 Hz *SPL: 90 dB 2.83V/1m *Vas: 1.2 cu. ft. *Qms: 5.33 *Qes: .39 *Qts: .36 *Xmax: 18 mm *Dimensions: Overall Diameter: 12-1/2", Cutout Diameter: 11", Mounting Depth: 6-3/4", Magnet Diameter: 8", Magnet Height: 3-1/8

the box is

 2.56 ft^3 per chamber

- .15 ft^3 port displacement

- .16 ft^3 driver displacement

= 2.25 ft^3 net internal volume

if I tuned to 36hz  the port will be

13" X 1 1/4" X 11 9/16"

SO i dont know if 36hz if a good HZ to port my box

the  amp is 1100 W RMS at 1 ohm

Some reading for you:  http://www.diysubwoofers.org/faq.htm

http://www.jlaudio.com/tutorials/magic/ported.html

Thanks for the Info.

but in your opinion 36HZ will a be a good frequenzy ??

Yes I will use a subzonic filter. to the lower HZ which is think it is 20hz

 the amp is the menphis 1 ohm,,i cant remember the model

i listen to rap reggae, that kind of music..

From subwoofer DIY website, here are the formulas for calculating tuning frequency (Fb) in a ported enclosure.

To determine the optimum box size and tuning for a ported enclosure system, you will need to know the following Theile/Small parameters for the driver:

Vas = Equivalent air compliance (litres) Qts = total Q of the driver at its resonant frequency Fs = resonance frequency of the driver (Hz) Dv = internal diameter of port (cm)

then,

Vb = 20*Qts^3.3*Vas Fb = (Vas/Vb)^0.31*Fs F3 = (Vas/Vb)^0.44*Fs dBpeak = 20*LOG(Qts*(Vas/Vb)^0.3/0.4)

where,

Vb = net box volume (litres) Fb = box resonant frequency (Hz) F3 = -3dB frequency (Hz) dBpeak = maximum peak or dip in system response