Originally Posted by ehlarson
Originally Posted by ehlarson
So I finally got some time over Christmas to update the firmware in my D2V from 2. something or another to 3.09, and ARC to 3.02.
The process went pretty smoothly. I then remeasured my room and tried a couple of settings for the high frequency cutoff. 5K sounds a bit dull to me so I'm using 12K right now, which I think sounds better but isn't harsh. I also tried 15K but that sounded a bit harsh There don't seem to be any resonances or suckouts that ARC can't deal with so the results look pretty good.
The thing that I have a question about is the room gain. Since the room this is in opens into another room I'm getting a number of 0.6. I read somewhere that a gain of 2-4 is normal and what movies are typically mixed for. My system also sounds a bit thin in the upper bass.
What is the best way to deal with this?
I did some screen caps of the ARC application window to perhaps help describe what is going on:
. . . .
Any ideas would be greatly appreciated.
Based on the red Measured curves, it looks like your room really has little to no inherent Room Gain. That is, it doesn't look like ARC was fooled by any dips in the uncorrected speaker output. The low inherent Room Gain could easily be due to the open floor plan, or, if you have bass treatments on the walls they would also reduce it. You could raise Room Gain in Targets, but you should probably not try to go much above 2dB so as to keep the ARC response closer to the natural response of the room.
Now, you do have some dips in bass that might be harder for ARC to correct if you increase the Room Gain (since that means ARC needs to apply more boost to fill those dips up to the now higher Target). So try it and see what the charts look like. Adding Room Gain will give you fuller mid bass.
Another important thing to do is check the Phase setting for the Sub. If Phase is wrong for the Sub (compared to the main speakers) then you will be getting cancellation through the Crossover octave of frequencies where Sub and Mains are playing the same content. That's a classic cause of "anemic" bass symptoms because the octave below the Crossover frequencies is the cornerstone of the bass you hear. Phase is something you have to set Manually. ARC can't adjust for Phase because it doesn't hear the Sub playing at the same time as any Main speakers.
At the high end, your Measured data doesn't give me a lot of confidence that the mic is hearing things particularly well up there, so I'd be loathe to push Max EQ Frequency too far. You got that yourself when you tried 15KHz.
I think instead you should double check the pointing of your speakers. Treble output from speakers is much more directional than lower frequencies. If the speakers are not mounted at seated ear height then pay particular attention to their vertical pointing. Center and the Surrounds can point at mic position #1. Left Front and Right Front should not point directly at mic positions #1. The usual Rule of Thumb is to swing them only 1/3 of the angle from pointing straight at the back wall towards pointing at mic position #1.
Also keep in mind that for proper treble Measurement the ARC mic must be pointed straight up at each mic position, and it should be set with the mic tip at seated ear height (unless you have to adjust a bit to clear a seat back). Also keep the mic about 18 inches away from walls and if you have tall seat backs also movie it a foot closer to the screen to be away from them.
With any luck some corrections here will give you better looking Measured treble data, meaning you can push Max EQ Frequency higher without "correcting" bogus data up there.