[mlundy57]

What is:
the outer diameter of the woofer? and
the depth of the mounting flange?

Thanks,

Mike

[Captainhemo]

I believe this will  help you Mike
http://gr-research.com/pdf/12in%20mechanical%20drawings.pdf

jay

[bdp24]

The mounting flange depth is 3/8", and the diameter is 12-3/8", give or take 1/16".

[mlundy57]

Jay,

Thanks. 

If I read that correctly the outer diameter is 321mm (12.638" / ~12 5/8") and the flange depth is 20mm (181mm-161mm) (0.787" ~3/4").

The mounting flange depth is 3/8", and the diameter is 12-3/8", give or take 1/16".

Ed,

The drawing looks a little bigger than that, though I could be reading it wrong.

Mike

[Captainhemo]

Mike, I get 5./8" for the flange when I use a caliper on  mine ( 5 thou over actually )
I'd say 12 5/8' is right for the  diameter, there is not much room on any side of the 13"  x 13"  cavity  onthe h-frames

jay

[skalos]

Another question.

If putting drivers back to back, (ie. 1 on each side panel of a sub both point outward and right behind each other) how close can they be together and still work properly?

[Danny Richie]

Another question.

If putting drivers back to back, (ie. 1 on each side panel of a sub both point outward and right behind each other) how close can they be together and still work properly?

If you are talking about a sealed box sub then mounting them back to back (in push pull) doesn't work with the servo subs. You are doubling the motor strength but keeping the sweep volume of just one woofer. You only have the output of one woofer and they can easily bottom out from the increased drive strength. It really give you less output then a single woofer.

If you are still allowing the back to be open you are still creating a U shaped baffle whether they are are back to back or staggered. Just leave a little space for air to flow in and out of the vented pole piece.

[skalos]

Similar to wedge base, open back 1 12" on either side, open back, but not staggered. Frint to back is a rectangle, but top is 9.5" wide and bottom is 14" wide depending on answer to my question. Is 1/2" space enough? If not. How much space?

[Danny Richie]

Similar to wedge base, open back 1 12" on either side, open back, but not staggered. Frint to back is a rectangle, but top is 9.5" wide and bottom is 14" wide depending on answer to my question. Is 1/2" space enough? If not. How much space?

If they are mounted pole piece to pole piece then the space between them needs to be great enough to not be less than the two pole pieces can flow. So I'd keep them at least an inch and a half apart.

[Erpeder]

Hej Mlundy57 look at my cabinets so you have an ideer.

Re: Working on the base for the Wedgie.
« Reply #65 on: 26 Jul 2015, 03:21 pm »