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Ive "designed" a few subwofers. Aka put the TSP into Winisd and come up with a good curve and built them for friends HT systems and they all have been pretty happy. So far they have all been ported. I looked into passive radiators but it seems like its hard to get them to tune below 20hz and gets expensive as radiators in that size can run over $100 each.
However I was wondering why we haven't see more passive radiators in DIY full range designs. B&W uses them, KEF uses them as do alot of other commercial speaker manufacturers. I know that compared to a port Passive Radiators are more expensive but usually not prohibitively so in sizes around 6".
It seems to me they can be used to increase low frequency out put without having to worry about port noise or port resonant frequencies. I know that some passive radiators are as expensive as some reasoably priced active drivers and that you could forgo bass reflex all together and just build a sealed cabinet with more active drivers. However that seems like that would increase the amount of power needed to drive the speakers, increase the complexity of the crossover and make the speakers distort earlier.
I'm sure most people here know alot more than me so I'm sure there are reasons no one uses passive radiators in their full range designs, but I was wonder if there were any above the cost, which in my opinion isn't all that outrageous.
However I was wondering why we haven't see more passive radiators in DIY full range designs. B&W uses them, KEF uses them as do alot of other commercial speaker manufacturers. I know that compared to a port Passive Radiators are more expensive but usually not prohibitively so in sizes around 6".
It seems to me they can be used to increase low frequency out put without having to worry about port noise or port resonant frequencies. I know that some passive radiators are as expensive as some reasoably priced active drivers and that you could forgo bass reflex all together and just build a sealed cabinet with more active drivers. However that seems like that would increase the amount of power needed to drive the speakers, increase the complexity of the crossover and make the speakers distort earlier.
I'm sure most people here know alot more than me so I'm sure there are reasons no one uses passive radiators in their full range designs, but I was wonder if there were any above the cost, which in my opinion isn't all that outrageous.
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