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Dayton Audio RS150-8 6" Reference Woofer
Is the 88/89 db sensitivity a half space rating? If not, what would the half space figure be?
The sensitivity is derived from measurement of this driver in an infinite baffle. This creates a half-space environment on the low end, so baffle step behavior must be accounted for.
Date published: 2015-02-03
what tweeter could i mate with this woofer?
There is no straight answer to this question. This woofer will work well with any tweeter that can cross as low as ~1,800 Hz, or that has an Fs around 700 Hz or lower. You may consider the reference tweeters as a good match.
Date published: 2013-04-10
Still not enough
Sorry to beat a dead horse, but 3rd order at 3k will be 20db down at 7k ELECTRICALLY--but the breakup itself is a solid 10db peak. The net response is therefore only 10db down about 1 octave from the crossover point; this is definitely still audible. Still wondering the best way to tame the peak (without the expense and part count of a very high slope crossover.)
If you want to do this passively, you only have two choices. You can use a lower crossover frequency and trade off some of the high end response, or you can design a very high order crossover. There is no magic tricks to make it work, but there is always a compromise. Personally, with this driver, I would do a lower crossover freq. Say 1.5k at 4th order LR. Two coils and two caps isn't terrible and gives you more slope. You can always go 6th order, but in my experience, complicated crossovers like this tend to make more problems than they fix. Even 4th orders are more than I like to use if I can avoid itAlso, have you listened to the driver crossed over this way? The peak you are speaking of is inherent in this type of cone, but it isn't usually nearly as noticeable as the measurements make it seem. In fact some people tend to think of it as a fuller, richer sound as long as it isn't a blaring noise that only certain, very low quality, drivers tend to produce.
Date published: 2012-03-04
How to tame breakup in crossover range
My previous question still applies, because the breakup will still significantly affect overall response unless a very high order crossover is used. So again, anyone know how to tame that huge 6-12k peak (even though I'll be crossing it over about 3k)?
If you use a third order crossover at 3K the breakup mode of this driver will be inaudible. It doesn't occur until around 7K or so at which point you will be down more than 20 dB and dropping.
Date published: 2012-02-07
Would you be able to provide C/R/L values for a notch filter to tame the 6k-12k peak of the aluminum driver?
Since the freq response of this woofer is listed only to 4200 Hz, any peaks or even response above 4200 Hz will likely be due to cone breakup and other nasty resonances, as consequence of running it higher than its intended range. I would suggest a two-way design, handing off to the tweeter at 2.5kHz or so.. It would be interesting to see how high these drivers can go, maybe a x-over point of 3-3.5kHz even?
Date published: 2013-03-31