TOPIC:

I've calibrated my SPL meter in REW with an external SPL meter and all looked well but when I go to perform tests it seems my system needs to be much too loud to get -25 db input for REW. I've tried the set levels but again my input from the UMIK seems much too low for the volume my speakers are putting out. When I get it loud enough at my listening position to satisfy REW my system distorts badly from the wave that REW generates. I have a rather loud system that shouldn't have any problem hitting 75 db at the listening position. Where should I look?

- Which UMIK-1 SN# and which REW are you using? You should be using the beta version of REW (support for UMIK-1 and no warning for level)

- Note 100% sure if you need the SPL meter here with a UMIK-1. It's already preconfigured. Possible that you've been offsetting the reference.

- Finally, note that you should tick the box the "control input/output volume" in the "Preferences" section of REW.

DevTeam

REW ver. 5.01 Beta 17 and my UMIK is Ser #700-1372

When using my laptop soundcard via Java It looks like I have the "control input mixer volume" checked off in REW however the "control output mixer volume" is not checked off and both boxes don't seem to be available to make changes. The boxes are faded out.

I have an ASIO soundcard as well and when I use it, I don't seem to have the option to select the UMIK as the input. Any help or guidance would be much appreciated. Thanks.

Sounds like you have the right software. What's the issue about level? Not sure to understand. Possible that you have a poor graph just because you didn't apply smoothing?

ASIO question: You'd need to use ASIO4ALL for the UMIK-1 control.

DevTeam

I think I have it figured out. I needed to restart my computer with the external sound card plugged in so it would become the default card. All seems to work o.k. now. Thanks!

hi, I,ve been getting the same message . Level is too low when calibrating to 75 db . I am using a MAc Book pro and external souncard MOTU Traveler. The only way I got a " Level is ok " was to go to Audio Midi Set Up " and change the input value from 0.32 (recommended by REW ) 0 db to something close to a value of .83 input or 19 db.

here is the UMIK 1 cal file I downloaded:"Sens Factor =-7.860dB, SERNO: 7001970"

Does the sens factor have anything to do with this ?
thanks
James

I just had the same issue, restart also fixed this for me.