Can someone help me

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Hi unknown,
Looks like the Tang Band W3-593SF is a good contender. You will need a ~22 L (net) vented box for the 4x drivers. You need to add extra space for vent/ports and drivers.
They look good for your intended FR duty. A tuning freq. between 65-75Hz should work what makes for a 70Hz port size diam./length: 2"/~1" (less than or 1.82 cm about the baffle size). Post your picture of your project.
Another interesting project link for the Tang Band W3-881SI 3".
http://www.tb-speaker.com/detail/1208_03/w3-593sf.htm
 

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