First time trying to run REW. Sorry if this is a dumb question but my time is limited and I have spent countless hours trying to figure this out with no luck. After calibrating my sound card I am having problems getting 75db without either adjusting the input gain on my focusrite 2i2 or using the headphone jack and gain knob as the output to my avr. I thought I read somewhere that adjusting the input gain on my focusrite after calibration was a no no but the measurements after doing so seem to be good and consistent. The sound-card sweep looks good but then again I'm a newb so who knows.
Here is what I've been doing.
Calibrate with a xlr-trs loop back on Chanel 2 with phantom power on and all looks good. I have read that a trs-trs with phantom power off would be better for calibration when doing certain measurements.
REW settings
Right channel
Input 1.0
Sweep level -10
Output volume .5
Wave volume 1.0
I also have it set to have a loopback for time reference and do the loopback on channel 1 during measurements.
Focusrite settings
Input knob 1/2
Monitor 1/2
sound card sweep results
Level check 23.3 db
Headroom 9.8 db
After doing the calibration I use my spl meter to calibrate the REW spl meter to 75db. After this I do a level check and am nowhere near 75db unless I turn up the right channel input gain or crank the avr up 100% and that can't be good for measurements.
Have I been wasting my time trying to avoid adjusting the input gain after calibration? Any help you can give will be appreciated. I need to figure out where I am going to put my sub woofer so I can install the drywall and dead vents on the backside of my wall. The wife is complaining about the stack of drywall in the basement. I want to have a happy wife so please help!!!
Thanks
Joe
Here is what I've been doing.
Calibrate with a xlr-trs loop back on Chanel 2 with phantom power on and all looks good. I have read that a trs-trs with phantom power off would be better for calibration when doing certain measurements.
REW settings
Right channel
Input 1.0
Sweep level -10
Output volume .5
Wave volume 1.0
I also have it set to have a loopback for time reference and do the loopback on channel 1 during measurements.
Focusrite settings
Input knob 1/2
Monitor 1/2
sound card sweep results
Level check 23.3 db
Headroom 9.8 db
After doing the calibration I use my spl meter to calibrate the REW spl meter to 75db. After this I do a level check and am nowhere near 75db unless I turn up the right channel input gain or crank the avr up 100% and that can't be good for measurements.
Have I been wasting my time trying to avoid adjusting the input gain after calibration? Any help you can give will be appreciated. I need to figure out where I am going to put my sub woofer so I can install the drywall and dead vents on the backside of my wall. The wife is complaining about the stack of drywall in the basement. I want to have a happy wife so please help!!!
Thanks
Joe