I downloaded a copy of UniBox a while back but haven't used it in some time (and I was not very good with it in the first place). I've been using WinISD for a "best case" scenario to see where things might lead. But, I've been wondering about the effects of the inductance of the driver and box stuffing. So, I dug up the copy of UniBox.
I am looking at upgrading subs to an Ascendant Audio Avalanche 18, because I really like the appeal of the 18, mostly. I've been wanting an 18 for some time now. The only problem is that I don't have the room for a huge box to put it in. The minimum recommended enclosure (this is without using an EQ or LT) is 4.6 cubic feet, which is just way too big, I think. I am looking for something more along the lines of 2.5-3.5 cubic feet or so. I know this is small for an 18, but it is a must to satisfy my "need" for an 18" driver without losing a lot of space.
I've done a little modeling in UniBox and it seems like all could work out well. As a test, I used 80l for the box size. I ended up with a system Q of over 1, which is not a good thing. I will be using this mostly for music and some HT, but never really loud. I've heard bad things about boomyness with high Q's, though, and I don't want any of that. So, I tried selecting the heavy fill option, which brought the Q down to .84, which is about where Chad Kuypers (of Ascendant Audio) said he runs his two Avalanche 18's that are in his home theater. But, I wonder, what exactly does this "heavy fill" setting mean? How much fill is heavy?
I am trying to achieve as low a Q as possible while keeping the box small and not requiring any EQ, as I do not have all the funds yet to include all this. I am a very poor carpenter, so I am having to have a box built for this sub in addition to buying the driver.
Are there any tutorials for using UniBox? What kind of values should I use for absorption and leakage? Any help is much appreciated.
I am looking at upgrading subs to an Ascendant Audio Avalanche 18, because I really like the appeal of the 18, mostly. I've been wanting an 18 for some time now. The only problem is that I don't have the room for a huge box to put it in. The minimum recommended enclosure (this is without using an EQ or LT) is 4.6 cubic feet, which is just way too big, I think. I am looking for something more along the lines of 2.5-3.5 cubic feet or so. I know this is small for an 18, but it is a must to satisfy my "need" for an 18" driver without losing a lot of space.
I've done a little modeling in UniBox and it seems like all could work out well. As a test, I used 80l for the box size. I ended up with a system Q of over 1, which is not a good thing. I will be using this mostly for music and some HT, but never really loud. I've heard bad things about boomyness with high Q's, though, and I don't want any of that. So, I tried selecting the heavy fill option, which brought the Q down to .84, which is about where Chad Kuypers (of Ascendant Audio) said he runs his two Avalanche 18's that are in his home theater. But, I wonder, what exactly does this "heavy fill" setting mean? How much fill is heavy?
I am trying to achieve as low a Q as possible while keeping the box small and not requiring any EQ, as I do not have all the funds yet to include all this. I am a very poor carpenter, so I am having to have a box built for this sub in addition to buying the driver.
Are there any tutorials for using UniBox? What kind of values should I use for absorption and leakage? Any help is much appreciated.