I spend over an hour each day walking with my dog, so I have a lot of time to think up wacky ideas.
What our your thoughts of a Folded Horn based on the OnePi speaker. Same as the 10Pi, but scaled down for the OnePi. It would be a neat little project, with final unit standing 36"x18"x20".
Correct me if I'm wrong. Using the ratios provided in your PiAlign document, the horn mouth would be 18"x24", giving a total area of 432 sqr in.
Area = ((speed sound/freq)^2)/(4*pi)
However, because the horn sits on the floor, effective area doubles to 864 sqr inch, giving me a cutoff of 130Hz.
Does this mean that by putting the OnePi into a folded horn, it will end up having worst bass response? Only frequencies above 130Hz will be increased by the 3dB that the horn provides?
Wayne Parham Messages: 18791 Registered: January 2001
Illuminati (33rd Degree)
You would expect the horn to increase output of the system above 100Hz, but not below 100Hz. You would still have output from the driver, but it would be as a direct radiator so it would be at a reduced level.
Wayne Parham Messages: 18791 Registered: January 2001
Illuminati (33rd Degree)
You could probably build a longer horn with a more narrow profile and get deeper bass response in a relatively small cabinet. Check Mike's little 40Hz basshorn. Using a horn with tight folds, you'll lose some upper frequency response but the added length will gain you some on the bottom end.
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