Remarkable work - well done!
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Remarkable work - well done!
Stunning work, that's a real commitment to a big project.
And I am approaching to the measurement of the internal volume:
I measure the weight of the my vented inner construction - 3.5 kg.
-The amount of water is 42 l. in the box; the average value relative to the density of MDF is 0.75 kg. of a cubic decimeter,3,5/0,75=4,7l, 42-4,7l= 37.3l more than what's needed - what's next?
The problem is that my investor likes the vision of the column.The decrease in volume must occur inside the construction of the cabinet.This sends the project in a more initial phase,we have a new requirement for the project, another W18 EX001.The old project stayed in the past ...
After preprocessing of the internal ribbing I can now start collecting the cabinets;
Now I can make the exact measurement of the volume.
And that's 31.5l, just as much as I need!
l forget to show you what I did to get that volume!
I make a filter compartment (for the CW and TW), the W section will be in the box;
I previously make the last layer-10 mm MDF / to get a sandwich construction / on the front panel and the bottom/;
Polyurethane primer before veneering;
After the measurements, this is are Technical data:
2½- way surround loudspeakers,
Frequence Range; 33-25000 Hz
Long term Max Power; 200 W
Crossover Frequency; 2800 Hz
Impedance; 4 Ohms
Sensitivity; 90 db SPL
Cabinet Volume; 31
Gross weight / without stand /; 27kg.
This is the project of the rear speakers, will finish it with "Bird's eye view".
Position -1, will look like position-2.
A very underestimated moment - work with multilayer MDF material!Always been a problem with the MDF, especially when we have a multilayer construction. Over time, individual parts are beginning to show up - all of this is the result of improper processing. Soon I will show you how to deal with this problem.
P.S.
I show you a German site, that offers such "DIY- loudspeakers " and please for your attention, they want money for such a product!