Hi members,
A questions here ... Just Fried the voice coil of one of My Favourite 12" inch subwoofer driver ... and i just dont wanna throw it away ... thinking of convert it into a passive radiator driver ... how do i do so? isnt it just mount it as a passive driver in the enclosure and left the voice coils unconnected? and add an active driver ... or any modifications needed? thx
A questions here ... Just Fried the voice coil of one of My Favourite 12" inch subwoofer driver ... and i just dont wanna throw it away ... thinking of convert it into a passive radiator driver ... how do i do so? isnt it just mount it as a passive driver in the enclosure and left the voice coils unconnected? and add an active driver ... or any modifications needed? thx
Why not buy a new voicecoil, it will save you buying another drive unit to power the Passive Radiator?
Already bought a new driver for the current sub box ... this is for experiment purpose about passive radiator ... since now the sub is broken ... seems like a good one for experimenting passive radiator systems ...
No, just glue some weight to the dome/cone juncture, from outside. It will not look pretty, but will work. Measure the new (lower) resonant frequency - it should equate the needed one from the simulation software.
I've seen someone separate the magnet and the basket away by means of using a circular drop saw ... isnt it the way to do (remove the magnet)?
I sawed off the magnet assembly with a hand saw. That way it will never bottom out. A passive driver should have 2-2.5x more (stroke x area) than the active driver. I converted a cheap broken fatboy driver into 2x its natural stoke without the magnet/coil. I also stiffened up the cone with some glass fiber and epoxy. I used a hole saw to make a wood plug to fit inside the old voice coil with a bolt sticking out the back. I then added more and more washers until I hit the tuning frequency I wanted. I went by ear and added washers until the passive had the right amount of travel at loud volume. More weights also tunes the sub lower. I ended up with a a small enclosure with a Ultimo sc 12" and 12" fatboy long stroke passive which gives good sound quality for its size. When you achive decent relationship between the drivers the passive should have a lot more travel than the active speaker.
I hope this information helps you and let us know how it turned out 🙂
I hope this information helps you and let us know how it turned out 🙂
- Status
- Not open for further replies.