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In the Forum: Horn-Loaded Speakers
In the Thread: For one day only

Post Subject: The elaboration…Posted by Romy the Cat on: 3/10/2013

It is not about “how low can the 600hz horn go before running in to problems” but rather a specific if of Vitavox S2 driver. The S2 with plastic suspension has secondary resonance at 1250 cycles (you might read about in details in my S2 thread). So, crossing at 1K will do nothing as the budge just over 1K will not let you to have proper decay, I mean in context first order of cause. My driver is crossed at 3200Hz and the 1250 bulge is factored in the slope. The bulge is left sided and it works perfectly as the bulge getting bigger the transition slop getting lower and compensate it. Talking about all of it you need to differentiate electrical and acoustical measurements. With my 3200Hz crossover I have a perfect 1000Hz acoustical filter. I do not know what Brits mean when they claim 1000Hz – the acoustical or electrical measurement. If they set at their d-crossover 1000Hz then acoustically the S2 is very far from what they mean. I presume that since they had no time they did not do any measurements then their 1.5KHz filter is very far from 1.5KHz.

Anyhow, to “pushing the edge running my 600hz horn down to 800, 900hz” is a bit too much to ask for a linear driver but it would be absolutely no accessible for S2. Even if you talking about acousticall 900hz then it would be also too close and I would stay with a least a full octave horn rate. Do not forget that you do want to use s2 in slightly deeper horns as it would like horn to hold a bit the S2 upper range “excitement” if you do not use any other messures...

The Cat

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