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This is another design I'm looking at http://hornplans.free.fr/186.html have you heard these or any reports on them ?

Thanks Bas, I'm revisiting the idea of the USB horn, altho they do say it only goes up to 170hz. I have a friend here in Perth who is a rep for precision devices and he does have the drivers for them. The Martin 215 looks like it could be awesome, do you know if there is a recommended PD driver for ...

I could go as low as 170 but would prefer to cross at around 250 if possible.

Thanks for that, I was actually just having a look. Will check it out some more.

But I 'm not sure if i really want to spend that sort of $'s just now, and I figure there has to be a diy build that would give similar results.

Ok, apparently that f215 mk2 sounds good to 250hz

Thanks, I've looked at the uSb design before but would prefer not to use not to use 18" drivers on a short horn and it doesn't go quite high enough, the other design looks good but doesn't go quite low enough :/ Thanks everyone for your suggestions, just exploring options.

IMO labs sound best run to around 60hz only. You may be right, the T48, I'm sure is a great sub by itself but may not be ideal for what I'm looking for, which to be honest is basically something that does this > http://www.funktion-one.com/products/f215-mk2/

I think 2 per side would probably be enough so long as they can do the upper frequencies well ?

I have 8 lab subs 90" x 90" x 45" deep.

I like how flat the T48 is from 60hz.

No, thank you. Also, no phase issues that I was aware of, I used delays, steep xovers and checked for phase coherence at the xover point. I would be running them over different pass bands not the same frequencies.

Hi Grant, yes the dr300s worked exceptionally well down to 80hz but I've sold them to a friend wo uses then with t36 that they built. The application is edm, I miss having the dedicated Lo mid that I had with the dr300 and this time I want to go down to 60 hz, I have other subs that I'm happy with t...

Or perhaps dual driver T39 ?

Hi everyone, I know it's been a while, hope this finds you all well. This is a question for Bill, or anyone that feels they have sufficient knowledge. I'm looking at options for a horn design that will cover the band of 60 to 200hz really well, T48 possibly ? I know the upper sub bass range would so...