Calculations of boxes for a subwoofer Ural Bulava 12 with different port settings 40,35 and 30Hz
Content
Drawings of FI boxes for the subwoofer URAL (Ural) Bulava 12.
- High setting 40 hz. If your music is mostly electronic, club, rock, jazz, pop, classical, i.e. songs that need fast, clear bass. Then the 40Hz setting is exactly what you need.
- Medium setting 35 Hz. Can't decide which box to choose? We advise you to pay attention to this calculation. It plays low bass well, suitable for fans of rap, trap, and other genres of music. He will also play club and fast tracks, but this is not his element.
- Low setting 30 Hz. Suitable for fans of tracks where a pronounced low bass. Basically, these are such directions as rap and trap. A low setting creates good sound pressure, you will feel the bass in your body. This calculation has only one minus, it cannot play tracks with high tuning and fast bass.
Setting the phase finder 40hz
Box detailing
The size and number of parts for the construction of the box, i.e. you can give the drawing to a company that provides wood cutting services (furniture), and after a certain time pick up the finished parts. Or you can save money and do the cut yourself. The dimensions of the parts are as follows:
1) 350 x 333 2 pcs (right and left wall)
2) 350 x 641 1 piece (rear wall)
3) 350 x 555 1 piece (front wall)
4) 350 x 265 1 piece (port 1)
5) 350 x 269 1pc (port 2)
6) 641 x 351 2pcs (bottom and top cover)
7) 350 x 48 3pcs (rounding port) both sides at an angle of 45 degrees.
8) 350 x 48 1pc one side at an angle of 45 degrees.
Characteristics of the box
Subwoofer speaker - URAL (Ural) Bulava 12;
Box setting - 40Hz;
Net volume - 49 l;
Dirty volume - 66,6 l;
Port area - 175 cm;
Port length 57 cm;
Box material width 18 mm;
The calculation was made for a medium-sized sedan.
box frequency response
This graph shows how the box will behave in a medium-sized sedan, but in practice there may be slight deviations since each sedan has its own interior characteristics.
Setting the phase finder 35hz
Box detailing
The size and number of parts for the construction of the box, i.e. you can give the drawing to a company that provides wood cutting services (furniture), and after a certain time pick up the finished parts. Or you can save money and do the cut yourself. The dimensions of the parts are as follows:
1) 345 x 368 2 pcs (right and left wall);
2) 345 x 666 1 piece (rear wall);
3) 345 x 576 1 piece (front wall);
4) 345 x 296 1 piece (port 1);
5) 345 x 368 1pc (port 2);
6) 666 x 386 2pcs (bottom and top cover);
7) 345 x 51 3pcs (rounding port) both sides at 45 degree angle;
8) 345 x 51 1pc one side at an angle of 45 degrees.
Characteristics of the box
Subwoofer speaker - URAL (Ural) Bulava 12;
Box setting - 35Hz;
Net volume - 54 l;
Dirty volume - 75 l;
Port area - 185 cm;
Port length 70 cm;
Box material width 18 mm;
The calculation was made for a medium-sized sedan.
box frequency response
This graph shows how the box will behave in a medium-sized sedan, but in practice there may be slight deviations since each sedan has its own interior characteristics.
Setting the phase finder 30hz
Box detailing
The size and number of parts for the construction of the box, i.e. you can give the drawing to a company that provides wood cutting services (furniture), and after a certain time pick up the finished parts. Or you can save money and do the cut yourself. The dimensions of the parts are as follows:
1) 345 x 428 2 pcs (right and left wall);
2) 345 x 636 1 piece (rear wall);
3) 345 x 548 1 piece (front wall);
4) 345 x 358 1 piece (port 1);
5) 345 x 396 1pc (port 2);
6) 636 x 446 2pcs (bottom and top cover);
7) 345 x 51 3pcs (rounding port) both sides at 45 degree angle;
8) 345 x 51 1pc one side at an angle of 45 degrees.
Characteristics of the box
Subwoofer speaker - URAL (Ural) Bulava 12;
Box setting - 30Hz;
Net volume - 60 l;
Dirty volume - 83 l;
Port area - 180 cm;
Port length 79 cm;
Box material width 18 mm;
The calculation was made for a medium-sized sedan.
box frequency response
Conclusion
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