Wow... (BD-Design)

by Bert , Friday, August 17, 2007, 09:46 (6090 days ago) @ JAM

Hi Jam,

Now for the question: You state that you use 32 X 12" Beyma's in the sub
setup. In the old days we learnt that it was not good to connect speakers
in series - is this not so much an issue with subs or...??

It is much less critical for subs even if the coils in series act like a 6dB filter which is way above the used frequency range (<27Hz). You do loose sensitivity by connecting the drivers in series and the individual control of the driver is less (hence the choice for a low Qts driver). Best would be to connect all drivers in parallel but this is not possible in this situation as the total impedance will then be 8/16 ohms and an amplifier can't handle that. Using more amplifiers for each pair of drivers would cure that problem though....

Still, by combining indentical drivers used in series (4 drivers having the same TS parameters with Rdc as most important one) and these as quads connected in parallel works well. Loosing 6dB when connected in series is a disadvantage but the amount of quads used gives more than enough total sensitivity for the purpose...

Bert

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BD-Design - Only the Best!

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