I would not run that Incriminator 18 in 4.25 cubes ported. That’s the volume I would use for a sealed enclosure with that 18. It will want at least 5 cubes ported but preferably even larger than that. if you’re going to run it ported, you’d also want to get the extra options on it, especially the extra spider. If you’re getting a bare bones lethal injection 18, you’ll be better off running it in a sealed enclosure.I have a 4.75' (after subtracting the port) box and say $300-$400 to spend for an 18. I was just about to order a Lethal Injection 18d2 from ssa and I thought maybe I should get some feedback first.
That’s way short on port area. The box sounds like an issue to me. The CT sounds tropo 18 in 6 cubes would be a decently loud setup, but port area would need to be closer to 70 sq. inches. The box you have is really small on air space and port area for any 18 I’ve built for.Just reviewed the box plans its was 5.65' the port has 43" of area and takes .7' total so its 4.95' net volume tuned to 29hz and theres 6 lbs of poly in it for what its worth. the hole is already cut for an 18 I had a ct tropo cheapy 18 in there that lasted a few months and blew up. At about 800w it did about 112db and peaked at like 43hz from what I recall, could be wrong, in a full size chevy van with no interior. not much cabin gain to speak of a sealed box will not work IMO.
If I did go down to a 15, whats the advatage?
... so like a little less output and a flatter response? I guess I need a reason better then "not enough airspace"... per the mfg it is enough air space and it models ok on winisd.Having enough airspace.
If I did go down to a 15, whats the advatage?
1st off I love 18" subs:I guess I need a reason better then "not enough airspace"... per the mfg it is enough air space and it models ok on winisd.