Hi Eric
The Manger project is looking as follows.
The MSW and a Dynaudio 20W75 are currently mounted in an ugly particle-board (I think this is the correct expression - in German it is "Spanplatte") box. It is somehow similar to a Manger Zerobox 109 (not the uglyness for heaven's sake, but the construction).
It is currently in use for casual listening just to break in the drivers. In about three weeks I will make measurements, to be able to design the crossover.
There is currently only a first-order crossover in use, and I am feeling ashamed for using electrolytics for this purpose, but IMO this doesn't play any role when it comes to break in of drivers.
Though the woofer is in this case able to mess up the midrange (1st order lowpass) and the electrolytics are by no means sonically good, the box sounds quite astonishing. Imaging is already quite O.K. and the sound is more detailed as with my other box currently in use (two-way with Dynaudio D260 and 17W-LQ).
As soon as the drivers are measured I will build the prototype electronics. The crossover will be of the subtractive type (+ some equalization), and output power between 50 and 100 watts approx per driver. I will do this on Veroboard only since ist is just for trying any tweaking around.
This will be built into the prototype box and I will listen to it for some time (until the final one is finished). I will keep the electronics for further use (experiments with other crossover/driver combinations also non FR ones).
The final box will not use the Dynaudio driver but one from Audio Technology (currently in the make). This driver is a little larger than the Dynaudio one (it will have about three times it's Vd) and response of the closed box will be equalised flat to around 40 Hz. Maybe I will even make the rolloff selectable, I don't know yet.
So even with this box (that will definitely be larger than the current one) the prototype electronics will again be needed for tweaking before the final electronics is designed and built.
So the whole thing is something like an approximation process.
I don't know how long this hole thing will take, since I don't have much spare time for things like that.
Regards
Charles
The Manger project is looking as follows.
The MSW and a Dynaudio 20W75 are currently mounted in an ugly particle-board (I think this is the correct expression - in German it is "Spanplatte") box. It is somehow similar to a Manger Zerobox 109 (not the uglyness for heaven's sake, but the construction).
It is currently in use for casual listening just to break in the drivers. In about three weeks I will make measurements, to be able to design the crossover.
There is currently only a first-order crossover in use, and I am feeling ashamed for using electrolytics for this purpose, but IMO this doesn't play any role when it comes to break in of drivers.
Though the woofer is in this case able to mess up the midrange (1st order lowpass) and the electrolytics are by no means sonically good, the box sounds quite astonishing. Imaging is already quite O.K. and the sound is more detailed as with my other box currently in use (two-way with Dynaudio D260 and 17W-LQ).
As soon as the drivers are measured I will build the prototype electronics. The crossover will be of the subtractive type (+ some equalization), and output power between 50 and 100 watts approx per driver. I will do this on Veroboard only since ist is just for trying any tweaking around.
This will be built into the prototype box and I will listen to it for some time (until the final one is finished). I will keep the electronics for further use (experiments with other crossover/driver combinations also non FR ones).
The final box will not use the Dynaudio driver but one from Audio Technology (currently in the make). This driver is a little larger than the Dynaudio one (it will have about three times it's Vd) and response of the closed box will be equalised flat to around 40 Hz. Maybe I will even make the rolloff selectable, I don't know yet.
So even with this box (that will definitely be larger than the current one) the prototype electronics will again be needed for tweaking before the final electronics is designed and built.
So the whole thing is something like an approximation process.
I don't know how long this hole thing will take, since I don't have much spare time for things like that.
Regards
Charles