View Full Version : 2215H Sensitivity 1W@1m?
JoMoCo
01-06-2009, 04:01 PM
I can not find a spec sheet for this driver. The older 2215A/B sheet lists sensitivity at approx "45dB spl at 30 feet with one mW input warbled 100 to 500Hz"
Thanks in advance for your help in interpreting....:blink:
grumpy
01-06-2009, 04:14 PM
http://www.jblpro.com/catalog/support/getfile.aspx?docid=1075&doctype=3
Also see:
http://www.thielesmall.com/database.asp#
Select 15", JBL, discontinued, visually scan for 2215H,
find sensitivity 96dB/1m
Hope there aren't any mistakes :)
Maybe compare K or E145 series.
toddalin
01-06-2009, 04:22 PM
I can not find a spec sheet for this driver. The older 2215A/B sheet lists sensitivity at approx "45dB spl at 30 feet with one mW input warbled 100 to 500Hz"
Thanks in advance for your help in interpreting....:blink:
94.2 dB
Calculation is:
45 dB + 10*log(1000mW/1W) = 75 dB at 1 watt @ 30 ft
20*log(3.28 ft / 30 ft) = -19.2 dB decrease @ 1 meter
75 dB - (-19.2 dB) = 94.2 dB at 1 watt at 1 meter
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