Hello,
I plan to build a Subwoofer For my Home Theater. The rooms ist 6*4 Meters. It should Play Low frequencies at a high volume, preferably to 20 hz. The Box can be pretty big, because it will BE mounted under the ceiling above my TV and i have a Lot of space there. Thats why i thought a horn enclosure would be a good idea. Now the next step is to choose a driver. So i wanted to ASK which tsps are required for such a build, so i can Tell If a Driver would fit in and simulate it?
Thanks
I plan to build a Subwoofer For my Home Theater. The rooms ist 6*4 Meters. It should Play Low frequencies at a high volume, preferably to 20 hz. The Box can be pretty big, because it will BE mounted under the ceiling above my TV and i have a Lot of space there. Thats why i thought a horn enclosure would be a good idea. Now the next step is to choose a driver. So i wanted to ASK which tsps are required for such a build, so i can Tell If a Driver would fit in and simulate it?
Thanks
In Case the bw ist so wide that it gets Problematic, i thought i could also build a 2 way sub with a 2nd chamber. I have a Low mid Driver left
OK, in theory we ideally want a 1/2 octave on each side = ~14 Hz Fs - 170 Hz BW with a ~ 2*14 Fs/170 = ~ 0.16-17 Qts = one $eriou$ horn driver. 😱
If we accept 20 - 120 Hz with sufficient room/corner gain, then a more typical ~ 0.33 Qts and of course the bigger the driver (or multiples thereof) the greater its acoustic efficiency.
If we accept 20 - 120 Hz with sufficient room/corner gain, then a more typical ~ 0.33 Qts and of course the bigger the driver (or multiples thereof) the greater its acoustic efficiency.
Okay Check, so the bw is far to wide. if we set xo to 60 Hz f.e. 2*14 FS/90 ≈ 0.30 Qts.
What else ist there to consider?
What else ist there to consider?
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Then either ~ 2*14/60 = ~0.47 Qts or 2*20/60 = ~0.67 Qts, but look for ~ 0.33 Qts subwoofers 1st to keep efficiency fairly high.
I used to use a pair of Labhorns in a similar sized room, they need a bit of EQ to get to 20Hz but will handle anything you throw at them.
Rob
Rob
Okay good to know. I did a Simulation in Rew. Not quiet Sure how accurate it is. Where were your listening and speakern positions and was there any sort of rooms treatment?
May I ask why it must be a single horn subwoofer with all its disadvantages in your home theater?
There is a good reason why most users go for cb arrays + rear wall dampening in their diy installations.
The required drivers are also much cheaper and the construction and development is less complex.
I noticed you want to place it above TV and under the sealing, but subs should placed ideally for sound good and not where they fit in the room.
There is a good reason why most users go for cb arrays + rear wall dampening in their diy installations.
The required drivers are also much cheaper and the construction and development is less complex.
I noticed you want to place it above TV and under the sealing, but subs should placed ideally for sound good and not where they fit in the room.
It is the only place where i can put a wire from the AVR or place the SUB, because of the interior
It doesn't have to be a horn, any other enclosure Type would be okay If the Sound in the Same volume IS AS good but I want to utilize the available space and efficiency of a horn.
Yes, Thats right. I simulated it in Room EQ Wizard and the Position seems to be good actually.