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In the Forum: Audio Discussions
In the Thread: Bass drivers inquiry
Post Subject: 6 drivers sensitivity, where is the truth?Posted by Romy the Cat on: 8/18/2005

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 cv wrote:
I make 6 drivers = 95.8 db/W. You get 3db / doubling of the number of drivers ie 88 + 10log10(6 drivers).That's why I'm going with a bunch of Lambda TD15S (which are sort of a cross between the Altecs cone - paper, curved, foam surround, and a motor not too dissimilar to the SD1 I think). But then I'm gonna try them out in dipole mode first so what the hell do I know :-)
Chris, with 4 drivers I have 97dB... MEASURABLE. Also, when I calculate the voltage dividers within my multi-amping I reflect the relation in dB between the LF section and other channels of know sensitivity, so I always refer to my LF section (4 drivers) as it were 97dB. Interesting the after I fixed the dividers (targeting 97dB) the RTA ALWAYS confirmed that the amount of adjusted dB was correct. As far as the Lambdas I was looking at TD10S driver. It was slightly too high cut off. Also, I never heard them….

The Cat

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