REW - Subwoofer measurements - Not getting what I expect

[Marty132]

I'm trying to get some baseline measurements out of my subwoofers before letting my AVR adjust everything. When I do a sweep with just my subwoofers, REW does not register much on the low end. I've got 4 SVS SB-4000s, that should have a curve as shown below the REW graph. I'm assuming I've got something configured wrong in REW, but can't seem to track it down. Any suggestions on what to look for? Thanks.

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[TLS Guy]

I'm trying to get some baseline measurements out of my subwoofers before letting my AVR adjust everything. When I do a sweep with just my subwoofers, REW does not register much on the low end. I've got 4 SVS SB-4000s, that should have a curve as shown below the REW graph. I'm assuming I've got something configured wrong in REW, but can't seem to track it down. Any suggestions on what to look for? Thanks.

View attachment 3252743

View attachment 3252747

Your links do not work. You need to upload those files, through Attach files.

 

[lovinthehd]

Yep your attachments yielded the oops problem message....have you posted enough here to post links/attachments at all? Not just your graphs, but post up room details, specific sub locations and your measurement technique/placement. Hard to know what you expected....just what was it particularly?

 

[Marty132]

Sorry about the attachments. I'm going to try and attach them here.

 

[Marty132]

I've since found a setting in Windows that needs to be unchecked, "Enable Audio Enhancements" on the Mic Settings. Now I'm getting a more realistic measurement.

 

[William Lemmerhirt]

That’s definitely better. You should also set the vertical graph limit to 45-105.

 

[3db]

That’s definitely better. You should also set the vertical graph limit to 45-105.

Why set the verticle axes down to -45db? That's well below the threshold of hearing. Start the limit at 0db

 

[William Lemmerhirt]

Why set the verticle axes down to -45db? That's well below the threshold of hearing. Start the limit at 0db

Well the point is to have a 60db window. It’s just that it seems to be the accepted scale.

 

[Pogre]

Looks like you got some peaks to cut!

So that's just your sub plugged in without anything as far as setup? Be curious to see what Audyssey does. It should aim for a flat response and does pretty good with cutting peaks. I'll bet it looks a lot better after setup.

 

[Pogre]

Well the point is to have a 60db window. It’s just that it seems to be the accepted scale.

Yeah, it's more of a consistency thing I think. 60 dB window just seems like it's what everyone uses.

 

[3db]

Yeah, it's more of a consistency thing I think. 60 dB window just seems like it's what everyone uses.

Well the point is to have a 60db window. It’s just that it seems to be the accepted scale.

My bad... I read 45 to 105 as -45 to 105. I posted my response after completing my 2021 tax return and found out that I owe. Emotional shock set in shortly there after.

 

[William Lemmerhirt]

My bad... I read 45 to 105 as -45 to 105. I posted my response after completing my 2021 tax return and found out that I owe. Emotional shock set in shortly there after.

Lol! I had to go look and see if if I wrote -45.
I understand. My brain is usually hamburger after taxes. Yuk!