I’d try placing the front sub between the front speakers at the midpoint of the front wall and move the rear sub to the center of the back wall (basically as Welti recommends) and see if you get some improvements. Hey, it’s free and reversible so why not? BTW, what’s that floorstanding speaker in the back of the room? Looks familiar but can’t place it. Avalon?
Integration of Two Subs with miniDSP Flex
Hi All,
I have a pair of bookshelf speakers (Fritz LS7 Illuminators) and recently purchased two SVS SB 1000 Pro subs. All of these are in my dedicated audio room.
The second sub is a recent purchase. I integrated the first sub with the mains using REW measurements and manually tweaking the phase, level, and 3 available PEQs on the SVS.
The results weren’t bad, but I had to run the sub up to 80Hz to address a null and my mains are spec’d down to 38Hz, so quite a bit of overlap. I thought I’d get another sub as I’ve head that having two with adjustable phase and PEQs can really help smooth out the bass region.
Not having faith I could manually configure the two subs or that their included limited DSP levers could give me the best overall response for my room, I just purchased a miniDSP Flex to help integrate the subs as well as give me options to EQ for my specific room. I haven’t purchased the Dirac Live option and would like to see what I can achieve with the standard Flex features before spending more $. I will use the Flex as my preamp as it has enough inputs for me.
I’ve read through the Flex manual once and have used the measurement options of REW already, but the recommended or best-practice process for sub integration and EQ is completely new to me.
I understand that REW has an AutoEQ option that can generate a PEQ file that can be uploaded to the Flex.
My initial questions are:
1) Do I generate an AutoEQ file for each bookshelf speaker separately? So I do a separate sweep and AutoEQ for L and R speakers individually?
2) Similar to above, do I sweep each subwoofer individually and generate an individual AutoEQ for each?
3) Even if I have experimented previously and have found an optimized phase setting for each SVS, do I sweep each sub with phase set to 0 degrees and somehow REW will compensate. . .or do I run the initial sweep with phase already set to what I believe is the best value?
4) Once I set generate AutoEQ files for all 4 speakers (L/R/Sub1/Sub2), how do I know where to set the LPF for the subs and HPF for the mains?
5) Once I load all the AutoEQ files to the Flex and set LPF and HPF, then I run a REW sweep with all 4 speakers simultaneously driving and the resulting sweep should get me close to the target curve?
6) If the resulting sweep curve above has issues, what iterative process do I go through to refine things? Or is it just manual tweaking at that point?
6) Should I not worry about FIR filters and Compression at this point?
I know Dirac Live is supposed to automate a lot of the room correction stuff, but looking at the Dirac website, it says that the Flex supports the base Room Correction module, but not the Bass Control module. So if my initial focus is two sub integration with my mains, I’m not sure how much buying the Dirac license does for me without the use of the Bass Control module.
Thanks all.