I’m wondering on the room size. What size are you working with, and how close are you to your system? There is a point where it’s just to small an enclosure to use bigger drivers...
I have a couple pairs of speakers that use 4" DVC woofers, I’m amazed at how accurate they are, and at 95+ efficient and 35 plus years old. They rock the joint, in a small room.
About 27.5 hz is as low as we hear, then we feel it. A 5.24" driver sounds so good because it is a MB driver. Most of what we call bass slam is not in the sub region.
50 (+ or -) 5 hz - 250-300 hz is the window shakers. 40 hz and below are foundation shakers.
A very well designed MB coupler has a tough job. Has to be fast, yet deliver a pressure that BANGS your chest. 5.25 is on the light side.
Smaller rooms though, they might be perfect.
I like 10-12" WCF MB drivers that are VERY permeable. In other words, mine have .60 holes in the cone material (woven carbon fiber) and they are lighter and FASTER and surely stronger, than most cones. You can see through them. They also use phase plugs, but unlike seas they are adjustable. Taper and length.
The other problem is inside the box, the back side of the driver, different issue, but I use a PR to control that, (overshoot and recovery) from the outside with weight added or subtracted to the PR cone, faster roll off.
Then there is 60 hz and below, whole different ball game...Whole different box. Just like your first poster, when you hear a well set up system Bottom to Top, you walk away just amazed...
I did some 55 + years ago. My Dads Thoren 121, C11, a pair MC30s and JBL C46 Minigon
I started that day.......I haven't stopped yet, I'm 65
Regards
I have a couple pairs of speakers that use 4" DVC woofers, I’m amazed at how accurate they are, and at 95+ efficient and 35 plus years old. They rock the joint, in a small room.
About 27.5 hz is as low as we hear, then we feel it. A 5.24" driver sounds so good because it is a MB driver. Most of what we call bass slam is not in the sub region.
50 (+ or -) 5 hz - 250-300 hz is the window shakers. 40 hz and below are foundation shakers.
A very well designed MB coupler has a tough job. Has to be fast, yet deliver a pressure that BANGS your chest. 5.25 is on the light side.
Smaller rooms though, they might be perfect.
I like 10-12" WCF MB drivers that are VERY permeable. In other words, mine have .60 holes in the cone material (woven carbon fiber) and they are lighter and FASTER and surely stronger, than most cones. You can see through them. They also use phase plugs, but unlike seas they are adjustable. Taper and length.
The other problem is inside the box, the back side of the driver, different issue, but I use a PR to control that, (overshoot and recovery) from the outside with weight added or subtracted to the PR cone, faster roll off.
Then there is 60 hz and below, whole different ball game...Whole different box. Just like your first poster, when you hear a well set up system Bottom to Top, you walk away just amazed...
I did some 55 + years ago. My Dads Thoren 121, C11, a pair MC30s and JBL C46 Minigon
I started that day.......I haven't stopped yet, I'm 65
Regards