Originally Posted by soundevolution
Thank you for replying. You are correct. The center speaker is located below the LCD panel. Is there anyway I can measure/trigger the trinnov to (fully) utilize my center speaker? I noticed when I put my magnepans extreme toe-in the center comes back, but this isn’t desired.
A fellow Maggie owner
Like you, I have the 20.7's but use the wall mounted MC1's as surrounds and their CC3 center. Upgraded last yr to the 20.7's from 3.6's.
Years ago, starting with a HD RPTV, then Pio plasma and now a 4K OLED, I made the decision to place the center CC3 above not below the display. 2 reasons which may or may not make sense -
1. placing above places the center much closer to where peoples' heads & therefore dialog will occur so it will be more coherent and matched to display than if placed below.
2. ceiling mounted & angled downward, it will also be more seamless & cohesive to the L/R. Plus a Maggie center is voiced to be same or similar to the large panels.
Your 2nd issue is how the Altitude is sensing the B&W center. By firing straight ahead & below where your head and Trinnov mic is placed, you are losing some directionality of mid & high freq's and probably not getting an optimum calibration. If you must stay with the B&W, my suggestion is angle it to your ears, either on a stand or suspended above the TV. Then the Altitude & mic can do a much better job of positioning & level matching it. The resulting calibration & the direct sound to your ears will be more prevalent in the overall soundfield.
To be honest my best suggestion: look at Magnepan's own center speakers. They have same basic dipolar design as the panels. They have fabric covered mounting holes on the tops & bottoms to screw in eyebolts or other hardware. You can then use decorative chains or similar & ceiling suspend them to literally be right above your flat panel. It works really well and I have had near-seamless integration with 1.6's, 3.6's and 20.7's. The CC3 is discontinued but the CC5 & CCR are current. I found the CCR to be a bit pricey but CC5 is about a grand USD. The only downside to the new models is they drop off bass at ~200Hz but you can add a DWM panel or adjust bass mgmt accordingly. I have a DWM placed below the flat panel and it handles the 40-200 range but in my case I send <80 to subs so I use DWM to fill in the CC3's 40-80 gap and set its Xover at ~100. I bought the DWM long before I had an Altitude so needed that fill-in. Both in unison are seamless as an integrated center. But you could just as easily bass manage Maggie centers to subs @ hi Xover or to the 20.7's! In fact, Magnepan prefers sending their center's bass to the L/R panels vs subs. They feel it's even more integrated that way. Altitude gives you the flexibility to direct LFE & bass to other nearby speakers then bass manage those speakers to subs. Esoteric option but it's there.
Please take this as trying to be helpful - to me the B&W center seems a mismatch with the rest of your ultra-performance 20.7. A small cabinet placed speaker, no matter how good, will be lost between the huge soundstage & imaging of your Maggies. Plus you can have diffraction effects from the cabinet. Before I used the CC3, I had tried for many years to use a DefTech "box" center with 80's vintage MGII's (much smaller than 20's) and the center never
sounded right, cohesive or part of the soundstage plus it sounded like the point source that it was - apples & oranges. Ditched it when I bought 1.6's and never looked back. Maggie centers have curved ribbons & membranes so that their sound fills the space between the panels and a near-seamless transition plus will sound more integrated. Seems a shame to have 20.7 fronts & 1.7's as surrounds but a small, completely different speaker to handle the most critical part of a movie soundtrack - dialog. If possible, CW is to use same design speakers from the same mfg across the LCR stage.
You might want to talk to Wendell Diller @ Magnepan in US or at least your local dealer to get suggestions. I would at least look at a center shelf placed above the panel so you can angle it toward the MLP. Something like these perhaps?
Or a stand with angling feature
A stand or ceiling mounted CC5 would make a great addition to your front soundstage with 20.7's! Seriously
WRT to the Altitude, you could also try boosting the center level on the Processor-Output tab by enough dB's to get its level more in line with the L/R. Adjust to taste.