Jones_Rush
Stunt Coordinator
- Joined
- Jan 19, 2001
- Messages
- 198
I want to build a sealed sub using the shiva driver.
My HT room is small: 13x9x8feet.
Since the largest room mode is 13feet, I will get room pressure below 43hz (566/13) 12db gain per octave,
which mean that I will have +12db gain at 21.5hz.
I need to build the sub so it will have -12db at 21.5hz, so I will have "flat" frequency response, this mean building a sealed box (for the shiva driver) which has about 45 liter volume (according to "WinISD" that will give me -12db at 21hz).
Am I making sense ? I mean, expecting flat frequency response (except for the room modes) down to 20hz with only 45 liter design ??? can it sound good ?
In theory, going with a larger box will give me boomy sound, since I will have too much pressure (room gain) at low frequencies which will make the bass intolerable...
My HT room is small: 13x9x8feet.
Since the largest room mode is 13feet, I will get room pressure below 43hz (566/13) 12db gain per octave,
which mean that I will have +12db gain at 21.5hz.
I need to build the sub so it will have -12db at 21.5hz, so I will have "flat" frequency response, this mean building a sealed box (for the shiva driver) which has about 45 liter volume (according to "WinISD" that will give me -12db at 21hz).
Am I making sense ? I mean, expecting flat frequency response (except for the room modes) down to 20hz with only 45 liter design ??? can it sound good ?
In theory, going with a larger box will give me boomy sound, since I will have too much pressure (room gain) at low frequencies which will make the bass intolerable...