http://www.adireaudio.com/ look under DIY Maelstrom.
-
Our native mobile app has a new name: Fora Communities. Learn more.
- Status
1 - 20 of 39 Posts
Could check out, JL Audio 18" W6 18W6 ,MA Audio MA1800XL,AudioBahn 18aw1805q...
Not sure if any of these would work..I have seen the JL Audio in action, was a beast(but that was in a Lincoln Navigator)...
You might want to check out ebay??
Sounds like you could be having some fun with this
Not sure if any of these would work..I have seen the JL Audio in action, was a beast(but that was in a Lincoln Navigator)...
You might want to check out ebay??
Sounds like you could be having some fun with this
Quote:
My math has 215L being about 7.6 cu.ft. In any case, for an 18" woofer, that's not an overly large enclosure. You are rather limited in port length with dual 6" ports so tuning very low is out of the question unless you want to cover over one of the ports. For a room that large and more of a "fun" system, I would just target strong response to 25Hz or a little lower. Without modeling, I would say that the Avalanche 18 with a little EQ would be my first inclination. The Maelstrom gives some pretty monster output from tuning frequency up in the right size box, and will do so with less power.
How about I model up your planned enclosure with some slightly more accurate software than Unibox, and we'll see just how close reality is. Any model is only as accurate as the information used, limited by the assumptions made. Those boxes are big enough for performance to stradle the Pro-HT performance realm. In other words, give the Cornwalls a bottom end to keep up with.
| Originally posted by craigsub I came across these enclosures on AV123 from a gent who does custom building. He is selling them for $350 plus shipping each. What would be the best driver (18 inch) to use ? The enclosure is 215 liters, or about 13 cubic feet ... with twin 6 inch ports ... Here is a link : http://forum.**********/showthread.ph...3&pagenumber=8 |
How about I model up your planned enclosure with some slightly more accurate software than Unibox, and we'll see just how close reality is. Any model is only as accurate as the information used, limited by the assumptions made. Those boxes are big enough for performance to stradle the Pro-HT performance realm. In other words, give the Cornwalls a bottom end to keep up with.
Quote:
Wow ... Thanks Mark ... I was not expecting THIS ... and that will also teach me to try that much math in my head ...
And yes, this is for fun, and also to help Bruce (the guy in the link) move some inventory he has sitting ...
Besides ... a solid 25 Hz would be a LOT more than I have now ...
| Originally posted by Mark Seaton My math has 215L being about 7.6 cu.ft. In any case, for an 18" woofer, that's not an overly large enclosure. You are rather limited in port length with dual 6" ports so tuning very low is out of the question unless you want to cover over one of the ports. For a room that large and more of a "fun" system, I would just target strong response to 25Hz or a little lower. Without modeling, I would say that the Avalanche 18 with a little EQ would be my first inclination. The Maelstrom gives some pretty monster output from tuning frequency up in the right size box, and will do so with less power. How about I model up your planned enclosure with some slightly more accurate software than Unibox, and we'll see just how close reality is. Any model is only as accurate as the information used, limited by the assumptions made. Those boxes are big enough for performance to stradle the Pro-HT performance realm. In other words, give the Cornwalls a bottom end to keep up with. |
And yes, this is for fun, and also to help Bruce (the guy in the link) move some inventory he has sitting ...
Besides ... a solid 25 Hz would be a LOT more than I have now ...
Good point ... But if they are sealed, I won't have any patent pending technology to talk about ...
Quote:
After some quick modeling it looks like the Avalanche 18 is a killer... but give it some serious power... It can take it.
A single port maybe 15-16" long while covering over the other one and some loose fiberglass batting inside such that it won't come flying out the port. Given the response and models, this is almost perfect for on of the Parts Express 1000W Amps which are on sale. Power each enclosure with one of these and you have the boost needed for the bottom if you want more 20-25Hz output or you can just flatten out the response. The pair would offer some monster performance. Figure >120dB from 35Hz up from each box, and roughly 115dB continuous around 25Hz. Dynamically you could likely get more down low, but port flow will be the limiting factor.
If you wanted to follow something closer to the original design using both ports, the Adire Maelstrom would be perfect and offer pretty serious performance above 25-30Hz. Even with the large ports, the big driver really pushes a lot of air through the ports. The Maelstrom would have more output at higher frequencies since it is almost 3dB more efficient in that range, but with the lower tuning the huge displacement of the Avalanche offers a bit more to work with.
| Originally posted by craigsub Have an Audio control Richter Scale III crossover and eq ... it is only 1/2 octave ... but should suffice for this ... And a single port with TWO of these should be killer ... |
A single port maybe 15-16" long while covering over the other one and some loose fiberglass batting inside such that it won't come flying out the port. Given the response and models, this is almost perfect for on of the Parts Express 1000W Amps which are on sale. Power each enclosure with one of these and you have the boost needed for the bottom if you want more 20-25Hz output or you can just flatten out the response. The pair would offer some monster performance. Figure >120dB from 35Hz up from each box, and roughly 115dB continuous around 25Hz. Dynamically you could likely get more down low, but port flow will be the limiting factor.
If you wanted to follow something closer to the original design using both ports, the Adire Maelstrom would be perfect and offer pretty serious performance above 25-30Hz. Even with the large ports, the big driver really pushes a lot of air through the ports. The Maelstrom would have more output at higher frequencies since it is almost 3dB more efficient in that range, but with the lower tuning the huge displacement of the Avalanche offers a bit more to work with.
Thanks Mark ... I am going on vacation next week (seven days on a caribbean cruise ... ) ... and when we return, this looks like it will be FUN ...
) ... and when we return, this looks like it will be FUN ...
1 - 20 of 39 Posts
- Status
