From TurboBass Express:
This is the original DOS version of TurboBass Express Pro. This version will only run on 32 BIT OS's XP and backwards. The Windows release is easier to use as the Windows version automatically calculates port vent sizes to a fixed optimum that cannot be changed, although for most designers in the armature just starting out phase of bass-headness the Windows version will be perfect and will deliver optimum sound improvement performance for your sub the DOS version is far more advanced. The DOS version allows you to fine tune your ported cabinet, in that you can tune the response by using the Port diameter and length programs, this feature relies on the calculations obtained by the ported box program. The original version has the following apps built in. 1. Sealed cabinet calculation program. 2. Vented cabinet calculating program. 3. Port Diameter calculating program. 4. Port length calculating program. 5. Standby mode. 6. Litre to cubic feet converter. 7. Exit to DOS/Windows. 8. Readme files. This program is a precise tool developed to design a loudspeaker cabinet to perform in the confines of a car boot, tuned to cope with road noise and internal pressure, no other program will perform this specific task. All you need is a technical data sheet from the manufacturer of the mid-range, woofer or sub-woofer. You will only need 3 of the parameters to calculate the desired cabinet needed. Uses: In car, Home Hi-Fi, Floats, Arenas, Stadiums, Club Sound Systems, PA Systems.