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

by Bert , Wednesday, May 02, 2007, 14:58 (6213 days ago) @ Jose Hidalgo

Jose,

Last answer regarding to the BD15 (as you do not seem to do your home work well).

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

This driver (look up the PDF-file from Beyma so that you can check properly)

Coil heigth of 17mm minus Pole plate thickness of 8mm leaves 9mm peak to peak linear excursion. To my calculations this comes to:

BD15 - Xl (7mm p/p) times Sd equals 616 cm3
15LW30 - Xl (9mm p/p) times Sd equals 792 cm3

Did you ever wondered how little more output in dB's you get with the mentioned differences? Have you any idea how much (or should I mention little) +3dB sounds louder?

Start wondering about that first and you will fully understand my sentence below...

Bert

--
BD-Design - Only the Best!

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