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I’m going to build a sub for my office. I’ve read lots of threads on subs so I think I know what I want to do. But I’ll make this post to check and see if anyone thinks I should do anything differently.
The system:
It’s a sub for my office, so music only. The room is about 725 cubic feet in volume. The sub will be played with some smallish MT speakers I’ll be designing soon. The speakers will have a 5.5” woofer and should just barely be able to play down to about 80 Hz. I’ll make the sub look like a nice end table, with cherry accents and legs holding it up. The sub will provide me with a little extra desk space and fit between my 2 desks that are perpendicular to each other. No significant budget constraints for the sub. I’m after good performance.
Cabinet:
I’ve got about 4 cubic feet to play with, minus the volume of the driver and amp. The driver will be mounted facing down. As far as I understand, I should just make a sealed, well-braced box. Line the insides with some R-19 fiberglass. And that’s about it. Oh, one question: Should the driver be flush mounted or does it not really matter for a sub?
Driver:
I can just manage to fit a 15” driver in the footprint space that I have. So 15” and 12” drivers are options. I gather that the 15” Tempest-X is the favorite 15” sub driver at the moment:
Or the Shiva if I were to go 12”. Is the Tempest-X pretty much the best one to use these days? .
Amp:
My only constraint here is that I do not want a fan in the amp. Upon Chuck’s [chasw98] recommendation, the Oaudio 500 W plate amp looks pretty good:
Is that Oaudio amp pretty much the best way to go?
[An added benefit of the Oaudio amp is that it has a crossover. So I could go digital out from my computer to, say, a Benchmark DAC, then to the Ouadio amp with crossover. Then the sub signal goes to the sub. And the speaker signal, without <80 Hz info, goes to the regular (not sub) amp and speakers. Alternatively I could just get a prepro with a sub crossover.]
That’s it. A pretty simple project. Thanks.
The system:
It’s a sub for my office, so music only. The room is about 725 cubic feet in volume. The sub will be played with some smallish MT speakers I’ll be designing soon. The speakers will have a 5.5” woofer and should just barely be able to play down to about 80 Hz. I’ll make the sub look like a nice end table, with cherry accents and legs holding it up. The sub will provide me with a little extra desk space and fit between my 2 desks that are perpendicular to each other. No significant budget constraints for the sub. I’m after good performance.
Cabinet:
I’ve got about 4 cubic feet to play with, minus the volume of the driver and amp. The driver will be mounted facing down. As far as I understand, I should just make a sealed, well-braced box. Line the insides with some R-19 fiberglass. And that’s about it. Oh, one question: Should the driver be flush mounted or does it not really matter for a sub?
Driver:
I can just manage to fit a 15” driver in the footprint space that I have. So 15” and 12” drivers are options. I gather that the 15” Tempest-X is the favorite 15” sub driver at the moment:
Or the Shiva if I were to go 12”. Is the Tempest-X pretty much the best one to use these days? .
Amp:
My only constraint here is that I do not want a fan in the amp. Upon Chuck’s [chasw98] recommendation, the Oaudio 500 W plate amp looks pretty good:
Is that Oaudio amp pretty much the best way to go?
[An added benefit of the Oaudio amp is that it has a crossover. So I could go digital out from my computer to, say, a Benchmark DAC, then to the Ouadio amp with crossover. Then the sub signal goes to the sub. And the speaker signal, without <80 Hz info, goes to the regular (not sub) amp and speakers. Alternatively I could just get a prepro with a sub crossover.]
That’s it. A pretty simple project. Thanks.
Other than box size, is there any disadvantage to the 15” Tempest over the 12” Shiva? In addition to the sound, the sub provides an excuse to build a little table and gain some extra desk space in the office. So a 3-4 cubic foot volume may actually be ideal.
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