Any one working on a 3+way? (1 Viewer)

[Henry_W]

John -
You are right about resolving any horizonal baffle issues by having your Xover at or below 700hz. That is how it works on my DIY center - my only hump in sound comes at about 90hz and is an entirely good compromise for my Heresy based HT. The first couple of pics on theis page show the center I made:

http://www.home.earthlink.net/~hwatkins/id63.htm

Jerry - cool thoughts. Looks like we are leaning toward the same type of sound, except I will be trying the difficult 3 way path. I have considered the Behringer and may well go that way, at least to determine what sounds best to me. I also built a couple of Pi twos that I plan on giving to my daughter, but I like them quite a bit and am keeping them for a while.

 

[Patrick Sun]

John,

Thanks for the offer, but at this point, the sucker is really really heavy, and if I really wanted to, I could beg a local guy (the one who puts on the DIY Atlanta gathering, Rob C.) to do more modelling for me. IIRC (it's been over a year now) I didn't go for 4th order slopes, so you don't see the massive nulls with the midrange with the in-phase/ out-of-phase test. I was probably shooting for 3rd order slopes to help the polar radiating response in a horizontal configuration for the drivers. For my purposes, I'm sort of used to it now, so the urge to tinker with it has waned for the time being.

 

[John E Janowitz]

Patrick, do you have physical dimensions on that MTM55 mid? All i can find is 87mm, but i need to know what that radius is on the corners and what the cutout size is.

John

 

[Patrick Sun]

I'm not at home (elsewhere for the holidays), so I can't help with the dimensions until tomorrow night. I do remember that I created the rounded corners of the MDM55 faceplate with my 1/4" spiral upcut bit, so that would probably suffice for the corners.

 

[Patrick Sun]

John, the Parts Express specs on the Morel MDM-55 show the specs for the cutout (3" wide for the body, with a little notch for the terminals, 3-7/16" for the square faceplate width, and the corners were created with my 1/4" spiral upcut bit as described previously, maybe a little bit of free-wheeling routing was used, but not much). Here's a layout of the dimensions guide listed for PE.