I'm currently using a TC 3K 15" sub in a 4cf sealed enclousure in my 6,000cf room, it sounds good below 60hz, but I need more mid-bass and low bass in my big room. I ordered one AV15X sub that will go in a 7cf box with two PR18-2100 to replace the TC sub. The AV15X sub in that PR box design will give me the low/mid bass for that size room. The power will be provided by a ED LT1300 (older version) plate amp and ED EQ2 for the equalizer/subsonic filter. This set-up will give me a tune of around 16hz which I think is very good for that size box. Due to size restriction in my room and waf, the box cannot go beyond 7cf (internal), that's why I choose the passive radiator design.
My questions are the following; The box size will be 20"W x 23"D x 39"L. The PR will go on opposite sides on the bottom of the encloure, the plate amp on the back and the sub driver in the front (top of the box). Will this rectangular set-up work similar to a more square set-up? Also, I will be putting some 5-lbs of polyfill which may give me maybe 1-2db's more bass below 20hz or so, will it also lower the tune of the sub from the current 16hz to maybe 15hz or so? Also, should I set the subsonic filter around the tuning point (15hz-16hz) or go maybe at 14hz-15hz? Will I need to run individual tones in the 12hz-17hz or so area to find the exact tuning point of the sub? Thanks.
My questions are the following; The box size will be 20"W x 23"D x 39"L. The PR will go on opposite sides on the bottom of the encloure, the plate amp on the back and the sub driver in the front (top of the box). Will this rectangular set-up work similar to a more square set-up? Also, I will be putting some 5-lbs of polyfill which may give me maybe 1-2db's more bass below 20hz or so, will it also lower the tune of the sub from the current 16hz to maybe 15hz or so? Also, should I set the subsonic filter around the tuning point (15hz-16hz) or go maybe at 14hz-15hz? Will I need to run individual tones in the 12hz-17hz or so area to find the exact tuning point of the sub? Thanks.