*Official Thread* Anthem AVM 70 & 90 and MRX 540, 740 & 1140

Awesome sharing bro!

Wow :ok_hand: lovely :heart_eyes: , thanks for sharing :+1:

@kennyluck2000 , @HIFI-AV-EXPERT & @kaydee6 , it appears to me that all 3 of you knew one another in some form based on your conversations. We are all grown-ups. I bet some of you are even older than me. All I can say to the 3 of you is to stay cool and put aside all the petty differences and bickering. Let us get back to the topic of interest and not to digress any further.

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Yes sir.

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Agree with you :100: :+1:

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Bro @matrix16888 do we know each other? I persume the 2xSB16 ultras are working great, they were bought from me when i was in AMK? Are you Henry’s neighbor?

Also are these results from Anthem AVM90 or 70? Do they come with multiple subwoofer license out of the box?

We know each other, perhaps too well. And we adds up to about 140+ years old. You are right, let’s get back on track.

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None of those you mentioned. He is using MRX 740 if you’ve read his post carefully :stuck_out_tongue:

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Nice :+1::blush:

Thanks for the great sharing @matrix16888 :+1:t5:

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Just to clarify, if excluding the Crowson actuator, your setup is actually a 7.2.4 since you only have 2 SVS subwoofer which you combined it into one single subwoofer using the miniDSP.

So in the end, you didn’t use much miniDSP functions like creating a house curve but instead allow the new phase alignment feature in the latest ARC Genesis beta (v1.6.4) to take its course to time align the subs with the mains.

I’m surprised to see you apply such a huge tilt, I guess it all boils down to the characteristics of the speakers (LCR) you are using and in your case Dynaudio Focus. And Yes, I can see the high trim values for your ceiling speakers but as long as it is within the +/-12dB (though ARC actually allows up to +/-15dB offset or so I read), I think you are safe. Anything beyond that, you may need to use the JSON formatter tool to get the actual dB offset difference from the reference measured SPL (75dB) determined by ARC:G.

In summary, I can see that you are very happy with the latest ARC:G that comes with an improved auto phase correction. A quick question, did you apply the same max correction freq range for ALL your speakers or selected speakers since you didn’t mention in your post. I knew for LCR, you likely push for the same 20KHz correction due to the large tilt variation.

For those with 2 subwoofers and placed one in front and one at the rear, I assume you will make sure one of the subwoofers polarity is inverted. If so, pls make sure to use the REW to check your response curve as ARC:G will not invert the polarity for you. You will have to do it in the Anthem’s Web UI. If your REW response curve didn’t look so good, do the polarity trick I have mentioned in a few post up.

I’m not using miniDSP to smooth out the ARC response…

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Yes. Mine is 2 front 2 back. The phase change was being done on my front subs at Minidsp2x4hd end.

After all the phase, impulse, alignment done at Minidsp2x4hd end for all the subs, I then let my Trinnov to complete the rest of the calibration.

For my case I will do it in manually in case room correction “miss out” doing it

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You had mentioned that you created a house curve using REW and that ARC flattened the HC that you created. Did you try LIMITING the sub’s freq range? I limited mine within ARC to only 80Hz which happens to also be my Xover point. If you limit ARC then the HC that you created WON’T get lost. Lot’s of people who use the miniDsp advice this approach. They don’t want the AVR’s ( ARC, Audyssey etc ) room calibration messing with what they achieved via the miniDsp.

In my opinion, if AVP has the capability to do HC, do it at The AVP side. Use Minidsp 2x4hd to match all your sub and smooth the curve Instead to be seen as “one”, in this way, each and everytime your sub will be time aligned, phase and impulse corrected with all your speakers every calibration.

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yes bro, I got the dual SB16 from you and they are serving me well up to date. lol.

Desray has helped me reply, I’m using 740. Nevertheless, there is no license for multiple subwoofers (not like DLBC - Dirac Live Bass Control), more limited by hardware, only 1140, 70 and 90 can do auto phase alignment for multi-sub (2 subs, 2 subs and 4 subs, respectively)

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in fact with only one input from miniDSP to 740, it’s more accurate to say my system is 7.1.4.

Yes, I didn’t use much miniDSP functions, in the very beginning, I tried 1) level align dual subs; 2) phase align dual subs; 3) create house curve with EQ through REW/miniDSP (later let me see whether I can find the graphs and share), then I use ARC Genesis beta v1.6.4 to calibrate. And then I read a lot on ARC and decided to try the simplest way - skip step 3), completely go without any EQ by miniDSP, and I’m happy with the results. I know in my almost square HT room, two subs are not sufficient to provide flat/even sub response across all seats (the most efficient way is either go for DBA/SBA, or multi-subs, ideally 4 subs in a good shape room with some acoustic treatment), so I’m not very particular on the flat curve, instead, I play demo clips to conclude whether the end results are satisfactory, not based on curves alone. But I still keep miniDSP as I use BEQ for almost all movies (unless BEQ is not readily available).

Yes, I’m pretty surprised that I need to apply such a huge tilt. There could be many factors, for example, room acoustic, AVR, power amps, speakers etc, all play a part. My primary suspect is emotiva XPA-3 is not able to provide sufficient juice to power hunger Dynaudio speakers, so the control is not well. but I can’t prove it until I upgrade my power amp, I’m eyeing for Apollon latest purifi 1ET7040SA 3 channel amp, but yet pulling the trigger.

And yes, I pushed same 20KHz for all channels, not just LCR, I didn’t paste all the screenshots because no point to repeat the same setting for all channels.

Hope that clarifies…

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Thanks for sharing bro, if you read my post carefully, I have mentioned it there (refer to below), I tried the method and tested with REW, yes, it will retain the house curve.

Although I can raise subwoofer’s Minimum Correction Frequency up to 50Hz or even higher to regain the house curve (confirmed by REW), but decided not to, as later I found Anthem is capable to give me sufficient ultra low frequency and together with BEQ, I have sufficient ultra low frequency effects.

It is particularly right if you are using Trinnov, I believe no one using miniDSP when they have Trinnov, unless for the BEQ sake, Trinnov is completely in a different league…