So after much experimentation with my amp (inuke 3000dsp) and running Anthem ARC numerous times, I have come to the conclusion that the original configuration was/is the best. By original, I mean implementing a HP filter as well as a LP filter as suggested by LTD and splotten. I have conducted extensive listening tests with both music and movies over the past week and it’s quite clear that the filters are necessary before applying arc. My trims are all within acceptable levels as well (according to arc).
When I run my Marty variant by itself, it is a pure monster- - plain and simple. It has a lot more output than my dual PSAs combined and that’s easy to measure, hear and feel. However, I prefer the sound/feel with all three subs actively engaged. Don’t know why, but it just sounds more even and smooth, even though it appears this combination is restraining the Marty somewhat. Not sure I am effectively describing what I am trying to communicate.
On a purely subjective level, I have to say that my system has never sounded better or more powerful. It’s just so effortlessly powerful now and I am not one to place quantity over quality, so I want to be clear by saying the bass I am experiencing is tight and articulate and not of the loose, boomy variety. I just can’t stand boomy or sloppy bass.
Notwithstanding the price of the parts (wood, glue, driver and amp), theses LTD/Marty subs are quite formidable once you get things adequately tweaked and you apply some decent room correction. It is at least the equal (and I really think it surpasses) my two PSAs so am guessing it should easily fit into the $1,600 and above category of commercial sub performance. Anyone contemplating building one of these subs should not hesitate. Its sheer size may not be for everyone, but its sound quality and potential more than compensate IMO.
Someone mentioned that there may be some improvement over time as the driver is broken in. Whether that’s true or not, I have found that the sound quality has steadily and subtly improved with additional usage. Ultimately, I am very pleased with the outcome.
This has been a huge learning experience and I am glad I jumped in despite my very limited knowledge in this area. On that note, I would like to thank all the folks who have helped me with this project:
Thank you LTD02, Mhutchins, Chaluga, Splotten and Steve nn –very much appreciated!!!! Hope I haven’t missed anyone.