Creating a “House Curve” using ARC Genesis - Additional Points
I realized some members maybe confused as to how the Room Gain and Deep Bass Boost can get so high w/o causing the bass to be muddy and bloated. I think I forget to add my subwoofer response curves for clarity. The reason why I am able to modify those values and with such high value is due to the fact that my JL Audio E series subwoofers does not have a flat response down to 20Hz or lower.
My JL Audio E series subs are unable to dig deep as it starts to roll off at around 23Hz, meaning we will see a drop in SPL readings. Here are my original response curves for my 3 subwoofers (front pair are E112 while the rear one is E110) after ARC calibration:
As you can see, ARC determined that a flat curve is a challenge for my E series subwoofers. Hence the nearest low-frequency slope will be 2nd order while the second subwoofer (the E110) sports a 1st order slope. They are pretty close considering there are of the same brand except for the difference in driver - i.e. E112 is a 12" driver which I have two of those while E110 is a 10" driver. Instead of selecting “Flat” and make my job easier, I decided NOT to touch the slope and leave it intact. Instead, I focused on the System-wide Target settings and emulate the Harman house curve with the natural roll off at the tail end for the 3 subwoofers. The only modification I have made are the high frequency extensions for both my subwoofers as follows:
Subwoofer 1 (2 x E112) - from 140Hz to 110Hz
Subwoofer 2 (E110) - from 90Hz to 110Hz
If I have decided to choose “flat” for all my 3 subwoofer low frequency extension slope, this is what I will get instead for my system-wide target settings.
You can acheive the same results just by manipulating the subwoofer low frequency extension slope. The most apparent difference will be the complete removal of Deep Bass boost to “0dB” whereas the Deep Bass Boost Centre remain at default 50Hz. One can achieve pretty much the same results using either method but I chose to retain what ARC gave me instead and this is the reason why I can have a high Room Gain of 5.5dB and Deep Boost Bass at 3.5dB with Deep Bass Boost Centre at 20Hz.
Hope that clarifies…
One great thing about ARC is the flexibility to manipulate the response for both your speakers and subwoofers to your liking. You can reach your “goals” using different methods.
You may be disappointed to know that while AVM 90 have 4 independent subwoofer outputs, it will not do combined readings into one or two virtual subs like what miniDSP 2x4HD can do. This is a feature that I really hope Anthem can support in the future.
For LCR only? If so, yes, you can do that and will benefit. But if you want to do more than just 3 speakers, then you should not be getting MRX but AVM will be a better choice. The way the MRX and Pre-amp (AVM) are manufactured is different as it serves different consumer groups.
First time trying to get my head around of all of this with my new toy … What can you make from this. I wanted to focus on the stereo and did a separate test for that without sub, hence different graphs I guess!
Any tips on what I need to do to tweak this setup if at all would be greatly appreciated.
What subwoofer(s) is/are you using? Your subwoofer gain starts to drop at around 65 - 70Hz. If you can, try to play with the room gain, deep bass boost, and deep bass boost centre to get the SPL up to 80dB. You can also play with Max Fq correction range to about 500Hz and see whether you like the sound. Apart from that, the rest of the speakers looks fine.
Thanks desray for the tip, I run svs sb16 ultra and will have a play like you say. Out of curiosity isn’t the target curve/corrected curve not bumping up those areas anyway or am I misunderstanding these graphs?
The target curve (black) and the corrected curve (green) should meet. The target curve should preferably be flat and maintain a constant SPL (say 80dB) between 50Hz to 20Hz or lower. Your SVS SB16 Utra definitely have enough headroom to do that.
First try gateway issue. Now Resolved can proceed download cheers.
Version 1.6.9:
STR: updated bundled fw to 1.8.30. Fixes an issue with using the latest Anthem Remote app beta; added support for automatic time alignment.
STR: re-upload the stored auto phase results every time a save file is uploaded (if auto phase has been run). Brings the STR series to feature parity with the MRX x40 series
MRX x40/AVM70/AVM90/STR: added ‘front left distance’ and units to measurement configuration screen; ARCG will use these to convert from relative distances to absolute distances
MRX x40/AVM70/AVM90/STR: a warning will be displayed if the measured delay exceeds that which is supported by the target
MRX x40/AVM70/AVM90/STR: display the speaker distance (relative/absolute) that would be uploaded to a device in the ‘levels’ page
MRX x40/AVM70/AVM90/STR: if present, export to PDF now includes speaker distances and subwoofer phase values
Additional release notes from 1.6.1 onward: MRX x40/AVM70/AVM90/STR: uploaded subwoofer level is reduced by 4/6/8 dB for systems with 2/3/4 mono subs respectively
@desray, you took leave to play with ARC!?
That’s awesome dedication for you
After serveral rounds of tweaking the ‘haus curve’ - I’ve finally have a sound signature that I can live this till my surround Focals arrive. It works equally well for music and movies,… plenty of rumble without sacrificing too much clarity and transparency; A nice balance that works with all my Go-to test scenes that I threw at.
Just for sharing:
(we each will hv own preferences as in what is gud/nice bass)
TARGET PROFILE
Room Gain: 5.25 dB
Room Gain Center Frequency: 150 Hz Deep Bass Boost: 2.5 dB
Deep Bass Boost Center Frequency: 25 Hz Tilt Level: 0 dB
Tilt Start Frequency: 100 Hz
FRONTS
Subwoofer Crossover : 50 Hz
Send bass to the sub High-Frequency
Roll Off: 2.77
Maximum Correction Frequency: 10000 Hz
CENTER
Subwoofer Crossover : 70 Hz
Send bass to the sub High-Frequency Roll Off: 5.94
Maximum Correction Frequency: 12000 Hz
… What can you make from this. I wanted to focus on the stereo and did a separate test for that without sub, hence different graphs I guess!
