Yes, I used both of those configs. Audiolense is by far your best bet. 4367 isn't even close to the M2's.
About that, how did you end up room-curve wise? After experimenting a whole lot I'm tempted to say that I believe constant directivity designs sounds a bit bright if they measure flat on-axis anechoically. I think the good sir
@Duke also found this to be the case if I recall correctly.
In my case it doesn't really matter if I use Audiolense, Dirac or manual EQ, it sounds more neutral if there's a small tilt in the tweeter by about 0.5-1 dB octave from 1 kHz-20 khz as measured from 1 meter.
Wow, thanks for the detailed reply
@Absolute - much appreciated.
I've just read elsewhere on these forums something from
@jhaider saying :
Has anyone else had any first-hand experience with this? In particular, if the measurable differences equate to audible differences.
The Crown fan noise is a deal-breaker for me, and I've not yet ordered the M2's, so I am weighing up between
- M2's + MiniDSP, since I am already familiar with their great gear,
- M2's + BSS Blu-50 (fanless) DSP, or
- Taking the easy way out and going in the direction of the JBL 4367's, which apparently are comparable but more consumer-oriented with a passive XO design (a JBL M2 versus 4367 Shootout was in the works, but doesn't look like it eventuated)
Thoughts, anyone? Thank you!
Not a problem! BSS is the best out of the original dsp-solutions because it was the original, or so I'm told. Based on the test Erin did with Crown and Minidsp loaded with rephase copy of a BSS dsp output, I'm not sure if the difference is just a gain issue in the Crown or differences in the way the dsp calculates the shelving filter. Looks to be a gain-issue.
I've heard several people with M2's saying that the BSS sounds better in back to back testing than Crown, so might be something to it.
When I measured my Crown cdi 4/1200 drivecore (original M2 settings in the FIR section of the dsp) and compared it to the manual settings found on internet I found that the shelving in the FIR setting for the woofer was +8 dB low shelf centered at 135 hz and not -8dB high shelf as shown. The frequency response remained the same for the woofer isolated, but I got far too low output relative to the tweeter when I put in -8dB high shelf as told by the internet pictures. I installed the rephase settings into minidsp 2x4 hd and found the same issue, the settings there equaled a -8 db high shelf leading to way too low woofer output relative to the tweeter.
I can't explain this findings, but somewhere I should have the measurements to confirm if I ever went to trial for my statements.
Anyways, if I couldn't afford a Trinnov or similar all-in-one box, I would go for either a pure digital dsp like OpenDRC with the original M2 settings, a BSS, probably the BLU-50 since it's fanless or the Flex since it can (I believe) run the Rephase settings as provided by POS and have good SNR.
Audiolense requires a computer-based setup which is painfully difficult and cumbersome to make user-friendly in a real-life scenario where you might use the system as a home-entertainment set-up and it's not like you're guaranteed the best result as it combines room correction and speaker correction. In my case where the speakers are placed near front wall and one against a corner, all room correction systems over-compensate the SBIR problems between 100-400 hz and makes the sound very bloated. A simple MMM-measurement after the fact confirms this;
Audiolense in red. As always, the results depends on the situation, so we still need to take basics into account.