Brent_S
Second Unit
- Joined
- Oct 5, 2000
- Messages
- 472
Sam,
reread my suggestion for the DVC12. It was a ported cabinet: 3ft^3 box tuned to 20hz. Anything that nets (box - port/driver/bracing) between 2.75 and 3.2 ft^3 tuned to 20hz is pretty much the same. There's less than 1db difference in max output across that range at 20hz...bigger is louder. The actual dimensions to get the necessary box volume are a matter of taste.
The ideal sealed cabinet for the DVC12 is more like 1.75 ft^3. It should sound quite nice in 3 ft^3 sealed, but you can push it *just* past max excursion with 240 watts at frequencies below 30hz. At 1.75 ft^3, it should handle everything the SA-240 can put out...almost a perfect match. Build the ported box and plug the port(s) to experiment with the sound. You may like the sealed better for music and ported for HT...just watch out for bottoming when you go sealed; you're still good for 98db@20hz, 105db@30hz before any room gain. There's usually less content below 30hz in music (depending on genre) than action movies which will also help protect the sealed design from over excursion if you only go sealed for music.
I haven't done the math, but have seen lots of projects that use the DVC12 downfiring.
wbs
reread my suggestion for the DVC12. It was a ported cabinet: 3ft^3 box tuned to 20hz. Anything that nets (box - port/driver/bracing) between 2.75 and 3.2 ft^3 tuned to 20hz is pretty much the same. There's less than 1db difference in max output across that range at 20hz...bigger is louder. The actual dimensions to get the necessary box volume are a matter of taste.
The ideal sealed cabinet for the DVC12 is more like 1.75 ft^3. It should sound quite nice in 3 ft^3 sealed, but you can push it *just* past max excursion with 240 watts at frequencies below 30hz. At 1.75 ft^3, it should handle everything the SA-240 can put out...almost a perfect match. Build the ported box and plug the port(s) to experiment with the sound. You may like the sealed better for music and ported for HT...just watch out for bottoming when you go sealed; you're still good for 98db@20hz, 105db@30hz before any room gain. There's usually less content below 30hz in music (depending on genre) than action movies which will also help protect the sealed design from over excursion if you only go sealed for music.
I haven't done the math, but have seen lots of projects that use the DVC12 downfiring.
wbs