AudioCircle
Industry Circles => GR Research => Topic started by: studley on 6 Nov 2017, 10:51 am
-
I have a couple of questions:
1. When using the 12-04 driver in a sealed box, what is the usable frequency range? In particular what is the highest frequency you would not want to go beyond?
2. The plans suggest using 3/4 inch MDF. Could I use 1 inch, or would that make the baffle too thick for properly seating the driver?
-
I have a couple of questions:
1. When using the 12-04 driver in a sealed box, what is the usable frequency range? In particular what is the highest frequency you would not want to go beyond?
2. The plans suggest using 3/4 inch MDF. Could I use 1 inch, or would that make the baffle too thick for properly seating the driver?
Range is about 16Hz to 125Hz.
Thicker is good. We even have a version of the box called the sand box that is rock solid. The more solid it is the better it will sound.
-
I am about ready to pull the trigger on a GR SW-12-04 and servo amp.
As I plan my enclosure, would 2 cubic feet be an advantage over the recommended 1.5 cubic feet?
Would a layer of Owens Corning 703 on the back wall be of any benefit?
I also noticed that the specs/parameters differ between the GR Research site and the Rythmik site.
Should I assume the GR site's specs are correct, or is Rythmik offering a slightly different version?
Thanks!
-
1.5 to 1.8 cubic feet is ideal.
-
I am about ready to pull the trigger on a GR SW-12-04 and servo amp.
As I plan my enclosure, would 2 cubic feet be an advantage over the recommended 1.5 cubic feet?
Would a layer of Owens Corning 703 on the back wall be of any benefit?
I also noticed that the specs/parameters differ between the GR Research site and the Rythmik site.
Should I assume the GR site's specs are correct, or is Rythmik offering a slightly different version?
Thanks!
Rythmik does offer some different drivers with different specs but if you are talking about the "g" version specifically, I don't know why the specs would be any different.
For the interior of your cabinet, I'd line all inner walls (between bracing & around rear cutout) with no-rez. It's the hard damping layer on the back that will help control resonence.. I don't think the OC703 is going to help deal with it at all
jay
-
Thanks for the responses! I think I will use some of my extra internal volume and do a variation of the sand box.
-
(http://i296.photobucket.com/albums/mm170/PDRCanada/D14.jpg~original)
Heres a pic of the bottom half of my Super V under construction....center dividers not in.
These are sand filled.......the best subs I've ever heard.
If your interested on how, heres a build link...... https://www.audiocircle.com/index.php?topic=111180.0