It would be bad because you couldnt get it to sound good. The mass limits on those PRs are too low for you to be able to adequately load them for control purposes. essentially you are putting less rigidity into the system, lowering the enclosure's control over the driver. You already learned the hard way about too little control on the driver, adding a fourth PR, even with all the weight you can throw at it, would essentially take you down the same road. You might notice something you like better at lower volumes, depending on your ear, but get anywhere near 1.8KW and your gonna wreck somethin...
aside from all of that (as if it werent enough) you mentioned that you want this to shine with LFE's from DVD. More mass on the PRs, even the added mass of the fourth, will increase the group delay of the system. 40ms or so is ok for a sub, but with a fourth PR, or more weight i would bet your delay would get closer to 60ms, necessitating the use of a signal processor on your entire system to get the bass back in line with everything else.
3 PR's should provide excellent damping, and good LF Gain as well... Frankly the output from that system should already be approaching ridiculous levels anyways. IMHO the issues that you want to address in this rebuild are entirely related to the construction and engineering of it, and after the rebuild you should see what i mean. Use what you have, and buy more after if youre still not happy.
Havent seen Peter post in here for awhile, he might have more details, as well as more scientific explanations, but i think he would tell you the same, and hey, if the rebuild "fails" to provide what you want, I'll take it! no really.
|
|
