Excel sheet for calculating room modes
http://www.wsdg.com/resources/resour.php?SL=te&BL=5
loudspeaker development, bassreflex tubes, full/partial impedance linearization, resistive 1st to 4th order dividing networks, inductor calculator (e.g wind up/down prediction).
http://www.wssh.net/~wattsup/audio/boxutile.zip
Calculates ported and sealed enclosures, and provides response graphs for your review. Also has a simple crossover design utility 2nd order only.
http://www.wssh.net/~wattsup/audio/avi(2).zip
construct and simulate loudspeaker boxes, passive and active crossover networks.
http://www.wssh.net/~wattsup/audio/lspdemo.zip
It will calculate Room Modes and allow the user to position listening chairs to avoid severe suck-outs in response realted to the room.
http://www.wssh.net/~wattsup/audio/thxcalc1.zip
find the output wattage of an audio amp or stereo quickly and efficiently. This program will display the output RMS wattage at a glance
http://www.wssh.net/~wattsup/audio/watts21.zip
Shows the component values needed for the selected frequency, or will show the frequency for given component values.
http://www.sound.au.com/Esp_lrx.zip
It designs crossover networks based on a resistive load
http://www.wssh.net/~wattsup/audio/tcd15.zip