Quote:
DrWho wrote:
 You really should be implementing a high pass filter on any subwoofer - especially IB's where the cone is essentially unloaded at the lowest of frequencies. Just pick a region where the measured output is already falling and then drop it off as fast as you can. You can't hear below 20Hz anyway, so all you're changing is the amount of visceral impact - but it's not going to be a huge change since there isn't output in the first place. |
IB subwoofer cones are "unloaded" at all frequencies. Excursion is the limiting factor. If you run out of excursion, you need more displacement. Many IBs generate clean output down into the single digits. The DC filters in most consumer electronics serve to high pass around 5 Hz, which works out very well. Drywall cracking infrasonics are where its at! Don't throw it away!