Choice of BD15 for our High-end Hifi project? (BD-Design)

by Jose Hidalgo , Wednesday, May 02, 2007, 14:39 (6213 days ago) @ Bert
edited by unknown, Wednesday, May 02, 2007, 14:45

Thanks Bert. However, there's one last thing I don't understand. As far as I know, Vd = Xmax * Sd IF the considered Xmax is not the p/p but half of it. The official definition of Xmax is "the measure of a speaker cone’s maximum excursion in one direction while maintaining a linear behavior".

For instance for a TAD 1601a (Xmax = 0,8cm on a given direction - or 1,6cm p/p if you prefer), Vd = 0,8 * 881 = 705.

For a Beyma 15LW30 (Xmax = 0,7cm on a given direction - or 1,4cm p/p if you prefer), Vd = 0,7 * 880 = 616.

So for the BD15 (Xmax = 0,7cm p/p = 0,35cm on a given direction), Vd should be equal to 0,35 * 855 = 299, not 513.

If we take the tolerances into accound, the safer value of your Vd should be equal to 0,3 * 855 = 256,5, not 513.

So saying that your Vd is 513 would be definitely incorrect.

Where am I wrong ? (I'm not trying to trick you, I'm just trying to understand things)

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