Originally Posted by Emosewa09
A question for Bob and the D2v experts:
Bob, in of the posts that you recommend at the start of this thread, you discuss in great detail the settings that you utilized with a Velodyne subwoofer, along with the D2 or D2v. You definitely found great value in utilizing the Velodyne EQ along with Anthem. However, in another post your recommend disabling the Velodyne EQ and utilizing only ARC. Which do you now recommend?
I also have noticed signficant inconsistency in how Anthem/Pardigm deal with separare sub EQs made by Anthem/Paradigm versus made by someone else. In the D2v manual Anthem recommends using PBK with multiple Paradigm subs first, before ARC. But Anthem then turns around, and discourages the use of any competing sub EQ and says they should be disabled when using ARC. So Anthem recommends using their own EQ along with ARC, if you have two Paradigm subs, but discourages the same practice with other subs and EQs.
In my case, I have two Martin Logan Descent subs, and each is connected to a separate Velodyne outboard SMS EQ unit. I was planning on running the Velodyne SMS first** and doing the best I can to EQ the two subs, and then running ARC after that. The SMS units will set a crossover, and I presume that ARC would then pick the crossovers for the subs and other speakers that best mesh with what the SMS units have already chosen.
Does anyone have any experience with two subs and using outboard EQs first, prior to running ARC?
** I also will finally get around to moving the subs to different locations in my home theater room to find the best location. I was going to use the Automatic (quick) measure for that purpose to check on the subs first, and determine the best room locaton. Veolodyne can also assist with that.
The history of this thread is so long, that some info is dated. The posts you found by me discussing Velodyne Sub EQ setup (advocating manual tweaking instead of using their automated setup), PREDATE the first release of ARC.
AFTER ARC came out, I did some careful comparison -- even checking what ARC produced using the sweep tones and calibrated mic of the Velodyne -- and discovered that ARC came up with a BETTER solution than the best manually tweaked solution I'd been able to achieve. The real value is seen when you move the mic around in the seating area. It's easy for any system to achieve good results at any single mic location, but when you want the best "compromise" solution across the seating area, that's tough. And with the EQ disabled in the Velodyne so that ARC was doing *ALL* the work, ARC just made it happen.
Anyway, my basic attitude is that if ARC produces a good looking solution without any assist from other Sub EQ systems, then that's the way to do it. I.e., a quality result with less processing. If you CAN'T get a good solution for bass with ARC alone, then that's the time to see if the other Sub EQ system can help. The trick is you have to be sure to do your ARC setup AFTER doing whatever you want to do with the other Sub EQ system. ARC has to be able hear the RESULT produced by any other Sub EQ system so that ARC can properly match the Sub to the Main speakers. So the ARC setup has to be done last.
Paradigm PBK is simply the Subwoofer-only subset of ARC. As such it's not surprising Anthem/Paradigm like PBK -- they are intimately familiar with its capabilities. In any event, the typical recommendation is that there's usually not much point in running even PBK as well if you have only 1 sub. ARC alone will usually do just as well. But if you have more than one sub, running PBK in each (and then ARC) may prove helpful.
As far as any other Sub EQ system, obviously you need to have faith that it won't screw things up (particularly compared to what ARC could do all on its own). But if you have that faith, then the same thing applies. I.e., run your additional Sub EQ *FIRST* if you believe ARC needs additional help.
Understand that no EQ system which only works on Sub output can replace ARC. The most significant thing ARC does is properly blend the transition between the Main speakers and the Sub -- which it can do because it acts on the Mains as well.
In my Velodyne sub right now, I have it's internal EQ disabled. I also have its Crossover filter disabled. ARC does all the work.