Ok I have an idea for a cool build, will only need one (maybe two 😉 ) ends making in 25mm MDF. It's volume when complete will be near as dammit 3 cubic feet. One end will be tested without the MDF end but for test reasons and a bit of fun 😉 have its skin tuned and act hopefully as a radiator/slaps to increase bass....
Going away for a while so build will commence on my return. Driver recommendations welcome.
Its the big one at the bottom that will be upcycled
Going away for a while so build will commence on my return. Driver recommendations welcome.
Its the big one at the bottom that will be upcycled
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Ha Ha, nice one pal. just to put a bit of meat on the project, the drum is 22" in diameter x 15" approx. It will be downward firing and i will keep the six bolts and the two hoops at each end to clamp the ends in place.
Three of the bolts will be extended (tripod) to form the legs. These might also be bolted to a heavy round or square base.
I do want to test it with the top skin left in place and "tuned" at different tensions to see if the bass can be extended. 😉
Three of the bolts will be extended (tripod) to form the legs. These might also be bolted to a heavy round or square base.
I do want to test it with the top skin left in place and "tuned" at different tensions to see if the bass can be extended. 😉
Maybe an Ultimax 15 would fit that quite nicely:
Dayton Audio UM15-22 15" Ultimax DVC Subwoofer 2 ohms Per Coil
And I think you can forget that testing with the "skin"... it may vibrate at some frequencies but the result is far from a real passive radiator 🙂
Dayton Audio UM15-22 15" Ultimax DVC Subwoofer 2 ohms Per Coil
And I think you can forget that testing with the "skin"... it may vibrate at some frequencies but the result is far from a real passive radiator 🙂
Thanks for that, i'm based in the UK so hopefully when i have applied its parameters in winISD it will suit. Not got a pc at the moment so if someone has the time to model it that would be great. 🙂
MDF is not ideal. 18mm of quality 18mm plywood will outperform it, particularily in the bass. The cyliindrical drum shell will be very stiff. The drum Head does not have nearly enuff mass to be used as a PR.
dave
Thanks for that, sounds good as it will be stronger especially once the diameter for the driver is cut out.
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