Excessive Clipping - Subwoofers

[sthomps]

Running into an issue and I like to understand what's going on.

Trying to get get some measurements on my subwoofers. I have 6, 2 Submersive, 2 JTR ULF4000, and two IQ18b.

Right now I'm measuring my ULF's. I can measure the first one and the second one fine but when trying to measure them both together, I get "measurement aborted due to excessive clipping 35%".

The master volume has been set to around 75db using the main front speaker. Front ULF's are around 82-83db.

I ran into the same issue with using Dirac, would clip at the slightest hint of any volume from my subs.

I had to drop the master volume by about 10 db before I could measure both.

 

[John Mulcahy]

What microphone are you using? Have you tried reducing the mic volume?

 

[sthomps]

That was it.

I'm using the UMIK-1. I had set the level to 9.9db in Windows based on the HTS REW quickstart. I just did another check and it was all the way at 24+ for some reason.

 

[John Mulcahy]

Set it to 0 dB.

 

[sthomps]

Ok so those instructions are no longer valid?

 

[sthomps]

It appears that it got bumped up when using Dirac. When setting the mic gain to 100% it changes the device settings - didn't realize that.