Bro Roni, when is your AVM90 coming?
No updates yet… still waiting patiently…
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Should be coming soon…You will love it! You should be put your Lygndorf on sale in Carousell or here soon… LoL
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Hi Rock, do you mean that Front wide are active with DTS HD upmix with DSU?
That is great news indeed. That means the front wide will be quite active with DSU on most content?
no bro, it’s before ARC, I put my two subs in front and same distance to my mlp, I didn’t do anything and the impulse are well aligned already, lol. I didn’t actually check post ARC, maybe I should do a measurement.
I will try bro, however, my room without any acoustic treatment and it’s almost square, so I never expect ARC will do the magic to get a good spectrogram.
Important thing is how do you find the sound. Graphs are secondary and it does not guarantee best sound in my experience. Do not be mistaken, I still very much believe in graph responses but these days I just treat it as a tool to complement and help me understand what’s preventing me from having the best sound. For instance, locating a nasty null or a a peak that’s cause boominess at my MLP. It allows me to remedy it by either shifting my seat or my subwoofers/mains.
Lastly, do not be fixated in achieving the smoothest response even though there are a few minor peaks or dips so much so that you spend way too much time trying to fix it. So long there is no drastic variation in SPL over a large bandwidth e.g. a huge dip or peak in your combined subwoofer SPL at the crucial frequency range between 30hz and 70hz. Anything above will be taken care of by your speakers (LCR) assuming a typical crossover of 80hz for a good pair of mains and center.
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ya, smoothest response is never what I’m after, time domain might be more critical and what matters the most is at the end of the day, whether you get the sound you like…
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Visited bro rock123’s AVM 70 setup and I’m happy to say that his sound system is very well calibrated using ARC. ARC did a fantastic job for his sound system.
For those living in the Punggol area may want to pay him a visit to have a listen to his Anthem AVM 70 and you will not regret. 
@rock123 - Thanks for hosting me and @wcseow today. Your son Rico is very cute. 
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do you mean that Front wide are active with DTS HD upmix with DSU?
Me : @Wechnivag bro yap only when manual select to Dolby Surround.
That is great news indeed. That means the front wide will be quite active with DSU on most content?
Me : For Dolby atmos movies, I dont think there’s lot of movies that have contents via the front wide channels activated. I stick back to 7.x.6 right now 
@desray and @wcseow my pleasure to host u guys.
I am very happy to learn many aspects with regards to ARC from u @desray r very experiened ) , ARC quick tips, phase and overall suggestion and method for me to test trial for the next calibration and i can explore and see if i prefer the SQ next.
I share the ARC calibrated settings we demoed as we can have a ab reference last and next.
Just to share the 1st round when the guys came for demo,
Default ARC calibrated settings is as below:
Room Gain +3db
Subwoofer Web UI level : -0.5db
Deep bass boost : 0db
Action added : ( Subwoofer Web UI level : Increase by 4db = +3.5db ) Bass’s better
Jump track to today 30 April 2022
ARC calculated settings- Room Gain : +6db
Subwoofer Web UI level : increase +1db = +4.5db now ( Default is +3.5db)
Deep bass boost : 0db
That the fun of it.
I personally think it’s good to visit one another member setup and i agree with u that the general calibration settings that we check is really a reference for us to tally and observer for a further analysis.
In fact my son always volunteer to setup the ARC MIC when doing ARC lol.
@desray will pay u a visit soon.
Looking forward future with the 2 years Anthem warranty, can enjoy for the next 2 years at least.
Lastly , very excited for the bros whom clocked the flagship AVM 90!
PS :@wcseow bro also appreciate your kind advice too. Another very humble guy.
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@rock123 , your 2 Rythmik 18" can dig deep down to 15Hz with SPL holding around 85dB without breaking a sweat…my JL Audio is not able to do that deep. At around 27Hz, my sub will start to roll off but that’s fine as I prefer my bass to be fast and tactile.
Uploaded the graph did just now. Will try the inverted vs normal phase.
Am impressed with u full battle kit bro @desray 
That’s normal field equipment I carry when I’m doing “house” visit. Nothing fancy.
I see… for a moment there I thought the software can align it so well. Nonetheless, fantastic subwoofer placement .
For those who are keen to understand, the impulse rise on Keai’s setup here shows
Both having a positive polarity , and the subwoofers drivers are moving in and out at the exact same time. That means they also stop playing specific frequencies instantly at the same time. This is important as it then doesn’t mask out details in the upper frequencies.( ie if u have one sub impulse moving slightly slower than that other)
We can also see the transient attack is a lot faster, with a steeper rise and fall from the impulse, instead of extended rise and fall that shows it Carries more weight. I suspect Keai is using smaller 12” type of subs
When both the impulses from the dual subs are aligned, they should automatically sum in phase . If however the impulses aligns, but they don’t sum in phase when combined, that means placement of subwoofer is not ideal. It also means the subs are not in a situation of “I help you, you help me”
Ideally, we will want to put both subs in locations where one has a peak and another a dip, that way, they don’t fight over the same frequency.
Good job Keai, having the subs at its ideal location and aligned before ARC, gives the room correction software the “headroom” for computation
But it’s important you verify this aspect post calibration…as with most automated calibration software , it can sometimes get it right, and sometimes not. So post calibration verification is important
An example of a 18” subs playing down to 5hz 
U can see above, the transients are longer and wider vs the 10” below
The above plays down to 30hz only…. Old picture when I had the dual 10” seas driver
Now see the transients again when line arrayed
You can see above, it’s “fatter” now, not so thin, that’s because the array is playing down to 10hz now when all drivers sum in phase, u have +24db gain down Low freq to 10hz
In essence, 10” can sound fast or slow, depending what band frequency they are playing. Similarly for an 18” sub, the transients will be fast if they play down to 30hz only and don’t extend to 5hz…how fast it stops, determines the speed and attack we feel. How deep it extends, represents the weight we feel . Think of it as Bruce Lee fast light punch vs Mike Tyson heavy punch
In short, u can have fast but less weight meaty bass, or meaty with weight slightly slow. The reason I have both and with line array and 18”…is to have the transition from fast followed by the weight
Ps/: don’t worry. Don’t have to share the spectro if time doesn’t permit. I’ll share the pre and post calibration once I get the AVM90
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Eh…I’m confused…is matrix16888 aka keai from the old XP or are we talking about 2 different persons?
Can’t agree more…Apparently ARC beta with auto phase correction is not perfect based on my experience with several attempts. But it is quite near. We just need more trial test results to confirm certain shortfalls and report back to Anthem Support so that the latter can work on an improved version.
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Ya matrix is Keai! He is using matrix now, sounds more suave & handsome, like Keanu Reeves
Ke AI sounds more like cute… “( in Chinese, ke ai)
Both also nice Nick !
lol, got nickname of keai for other reasons, haha, and matrix is one of my three favourable movies, I like Keanu Reeves for sure, but the like is not “alike”,
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Still waiting for your invite. Now that I have visited rock123 and heard his setup, I have a better understanding of ARC performance and also confirmed some of my suspicion on the way ARC beta 1.6.5 works for the phase and time alignment. Need to gather more trial data before I can conclude and send my feedback to Anthem Support.
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