[brucek]

Yep, looks correct.

So, you press the Measure button on the Settings page with the sweep output set to -12dB to -6dB FS and then you click Next and see the output VU meter at -12dB, then you adjust the Input Volume thumbwheel to set an RMS level of about the same -12dB to -6dB. Then you click Next a couple times and the Measure is done.

Is this what is happening or not?....

brucek

 

[jtwrace]

Yep, looks correct.

So, you press the Measure button on the Settings page with the sweep output set to -12dB to -6dB FS and then you click Next and see the output VU meter at -12dB, then you adjust the Input Volume thumbwheel to set an RMS level of about the same -12dB to -6dB. Then you click Next a couple times and the Measure is done.

Is this what is happening or not?....

brucek

pretty much other then my sweep is about 17dB otherwise it will clip. But other then that yes all is matched.

 

[brucek]

OK, how about the soundcard application settings.

Can you show me a pic of what the soundcard settings are?

You have to be sure monitor mode is off, and all equalizers and effects are off, and the mode should always be stereo with all soundfields off.

The monitor mode is especially important to be off. (read through this thread) It may have ideas on creative app settings problems.

brucek

 

[jtwrace]

OK, how about the soundcard application settings.

Can you show me a pic of what the soundcard settings are?

You have to be sure monitor mode is off, and all equalizers and effects are off, and the mode should always be stereo with all soundfields off.

The monitor mode is especially important to be off. (read through this thread) It may have ideas on creative app settings problems.

brucek

Yep, I have that all correct...I could show you all the screens but there are multiple ones with this soundcard.

 

[jtwrace]

I might be onto something....What about this?

 

[brucek]

I could show you all the screens but there are multiple ones with this soundcard

Well, I see no other problems here, so that's all I can suggest. You may have one of the settings wrong, because everything else seems fine....

I would also like to see the Windows Record Mixer and the Playback Mixer picture.

They should look like this:


Record Mixer

Playback Mixer
Note the line-in muted in playback. That says monitor is off.

brucek

 

[jtwrace]

This is with the higher sample rate.

Now I get a low level when I press measure on the actual test screen. Meaning, measure, check levels that's when I get it...from the upper left hand corner measure button.

 

[brucek]

This is with the higher sample rate.

That looks fine now.. - save it.

Now I get a low level when I press measure on the actual test screen

You have to go through the Check Levels routine before you press the main measure button.

brucek

 

[jtwrace]

That looks fine now.. - save it.


You have to go through the Check Levels routine before you press the main measure button.

brucek

I got it saved.

OK. I think I got that.. Can I run the SPL into the soundcard 1/8" Y to stereo RCA? Then RCA (stereo) out to my preamp so I can measure the both front speakers and both subs?

 

[brucek]

Yep, you're good to go.

Don't forget to load the SPL meter cal file from the download page into REW....

Generally, people take the right line-out by itself and Y-split it to the left and right AUX or CD input to the receiver..

brucek

 

[jtwrace]

Don't forget to load the SPL meter cal file from the download page into REW....

brucek

hmm. never read that in the hundreds of lines I've read...

 

[brucek]

Find your type of RS meter on the download Page and save it in your computer and then load it into REW Settings page mic\meter tab cal file slot....

 

[jtwrace]

Find your type of RS meter on the download Page and save it in your computer and then load it into REW Settings page mic\meter tab cal file slot....

OK. got that downloaded. Now I still get a low level when I try to do the real measure check level. If I go back to the check levels under settings I can't get enough L&R on the meter. I'm out of input volume to make them go higher.

 

[brucek]

When you go through the Check Levels routine, do you set the level of your receiver to get 75dbSPL at the listening position?

What do you mean L&R on the meter? You are only connected to the right channel. The left channel is not used.

brucek

 

[jtwrace]

When you go through the Check Levels routine, do you set the level of your receiver to get 75dbSPL at the listening position?

What do you mean L&R on the meter? You are only connected to the right channel. The left channel is not used.

brucek

Yes, I set the SPL at 75dB at the listening position holding the meter at 45' to the speakers (mic pointed upwards). I thought when I do these measurements I can have both channels going to the preamp so I measure the entire system (i.e. two main speakers as well as two subs). no?

 

[brucek]

two main speakers as well as two subs). no?

Yes. Feed the single mono right channel line-out from REW to the left and right AUX or CD input ot your receiver using a Y-Splitter and set the receiver to stereo. Now you have two mains and two subs operating.

I though you were referring to L&R VU input meters in REW...

brucek

 

[salvasol]

I thought when I do these measurements I can have both channels going to the preamp so I measure the entire system (i.e. two main speakers as well as two subs). no?

Yes you can ...just use the approch described on post # 30

 

[jtwrace]

When you go through the Check Levels routine, do you set the level of your receiver to get 75dbSPL at the listening position?

What do you mean L&R on the meter? You are only connected to the right channel. The left channel is not used.

brucek

OK. The issue with the low level when adjusting the Right meter was that I had to check a box on the line level tab under volume_advanced. I had to check the boost box. This enabled me to get more volume on the right meter (18dB). How is this graph? this is both fronts mains & speakers.

 

[jtwrace]

and a waterfall..

 

[brucek]

How is this graph? this is both fronts mains & speakers

Repost them with the following changes.

Set the vertical scale from 45dB-105dB and the horizontal scale from 15Hz-2000Hz. Use the Graph Limits icon button in the top right corner of REW to adjust the scale.
Set the 1/6 octave smoothing on the graph since you are graphing above sub frequencies

and a waterfall..

Set the vertical scale from 45dB-105dB and the horizontal scale from 15Hz-200Hz (waterfall is not meaningful above ~200hz.)

Use the Freq Axis button in the top right corner of REW to adjust the waterfall from LIN (as you have it now ) to LOG.

brucek