Originally Posted by shn750
Thanks for the advice. I did use a SPL to measure the test tone on the LF speaker and sub.
I set those to 75db. When the SPL registered 75db, to my ears it did sounded a little low. Maybe I need to change the batteries since it was sitting in storage for several years
So my question is:
1. Once I reset my test tone for the LF and sub, Will I need to re-run ARC?
2. In the target menu>Advanced settings. When I change the sub from auto to Flat, will I need to re-run ARC? Or do I just recalculate and then upload?
Just to be clear, the LF and sub should be set to '0' in the 'level calibration' section of the D2 setup menu--and stay set to '0'. In fact I find it easier to set all the speaker and sub levels to '0' initially.The adjustment is made in the 'noise level' line (5b).
The 'noise level' uses the LF to send tones, but make sure not to change the level in the 'front-L' line(5c).
The adjustment is similar for the sub. The 'movie sub' and 'music sub' (5j-k) are set to, and stay set to, '0'. The adjustment for the sub level is done by raising or lowering the gain/volume by using the adjustment on the sub itself.
ARC will make volume level adjustments for all the speakers relative to each other for the primary listening spot, which is ARC mic position #1. After your ARC upload, the values for all the speaker levels will probably change from the '0' setting. The setting for the 'noise level' will not change, but stay at the setting you made to get it to 75db.
To answer your other questions:
2- No. The adjustments to the settings in ARC (flat, max eq, room gain, etc) can be played with to see how the graphs look with different values you choose before you upload to your D2.
Just go into the 'targets' window for your ARC file, make the changes, click on 'OK', the click on 'Calculate'. The new graphs will show the ARC solution for those values.
To get back to the original ARC values: go back into the 'targets' window and click on 'auto detect'.
No changes are made to the ARC solution in your D2 until you upload it.Trust ARC to choose the correct values
. There are very few of the setting that should be changed IMHO.
Setting your sub to flat is one of those changes, as long as your sub has internal protection. Most subs do, but if you have a question please check before changing it to flat.
Raising room gain is another, if ARC sets it low. I think yours is at or near the max, so you can leave it alone.
Raising the ' max freq' is another, but the default 5000 setting is usually the best choice.
But the nice thing about ARC is that you can make adjustments and look at them. If they look good, you can upload and listen. If they sound good you can keep them. If not you can easily revert back to different or original settings.
ARC is a great program.