Subwoofer box calculator allows you to create speaker enclosures on the go, with this easy to use app you can quickly create box enclosures for yourself or your clients. The app includes: - Vented box calculator - Wedge box calculator - Port Calculator - Wiring diagrams - Ohm Calculators: -Advanced ohm calculator allows you to enter the total Ohm load per speaker(not per voice coil) and number of speakers to get the total Ohm load at amplifier. This is ideal for those people that know exactly the total ohm per speaker and how they will configure there speakers wiring. - Simple calculator allows you to select all the specs of your speaker such as voice coil, coil impedance and number of speakers and it will show you the total ohm load.