Posted by Adrian Mack [ 202.137.98.143 ] on April 14, 2004 at 18:30:59:

In Reply to: Confused about sensitivity information posted by GarMan on April 13, 2004 at 21:33:19:

The Eminence sensitivity guide should be showing the real 1w/1m levels of the driver. The graph must be showing something else, maybe 2.83v or something. I'd trust the sensitivity guides numbers, which are the real numbers.

n0=(9.64*10^-10*(Fs_a^3*Vas_a))/Qes_a
=(9.64*10^-10*(118^3*5.8))/0.60
=0.0153

SPL 1w/1m= 112+10*LOG(n0)
= 112+10*LOG(0.0153)
= 93.85db 1w/1m

Reference efficiency converted to 1w/1m sensitivity, it corresponds to Eminences sensitivity guide, but not the graph. The graph must be measured under different conditions.

Adrian

Replies:

• Same measurement method by different results? - GarMan 08:18:19 04/15/04 (2)
  • Re: Same measurement method by different results? - Adrian Mack 09:53:59 04/15/04 (1)
    • Re: Same measurement method by different results? - John Sheerin 07:18:06 04/21/04 (0)