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  1. All my graphs are now showing a 60 dB suckout at 9,590 Hz

    REW Forum
    This just started about a week ago and I can't figure out why. It doesn't matter which speaker or mic I'm using, or their relative placement. I use a Behringer Xenyx502 for a mic preamp and then go into my HP desktop line in. I don't send the mic input to the speakers so that's not an issue. Any...
  2. Feature request: adjustable dB reference...

    REW Forum
    REW is a great acoustical measurement tool! It also has some nice measurement abilities I'd like to apply to measuring gear, not just rooms. For example, a vertical scale (linear? or log?) in watts would allow us to measure headphone amplifier THD at different output levels. A vertical scale in...
  3. Soundcard Calibration +7.5 db -0,5 db

    REW Forum
    Hi everyone, I`ve done a new calibration of the soundcard /loop, since I want to perform some measurements with my new equipment. For that I use the HDMI output of my Macbook Pro and as input a TASCAM122 MKII with a EMC8000 mic. So for calibration purposes, I looped the HDMI output to the input...
  4. Is there minimum db levels when mixing?

    Pro Audio
    I dont know why, but usually my master bus peak is something like -20db cause i can push volume from the soundcard to speakers. If i put some limiter to master bus and try to push levels something like -5db i heard lots of clashing and it does not sound as good as lower volumes. And all my...
  5. Using EQ to cure dip +7.0 dB boost - good/bad idea?

    REW Forum
    Hi, I'm pretty satisfied with my adjustments to my setup following this thread here; however, I have a single dip at approx. 30 Hz I'm considering curing using the boost function in REW. I know that boosting is not considered an ideal solution since it'll lower my headroom, but will it really...
  6. Test sub at higher db with macbook?

    REW Forum
    Hi, How can I adjust settings to test my subwoofer at higher db with a macbook. When I run "check levels" before taking a measurement I can get clipping if I try and set it around 90db. I'm hoping running a sweep at a higher level will give me a better idea of response of between 18-20hz. I...
  7. Feature request: IEC standard dB measure...

    REW Forum
    Dear John: How are you doing? I hope you are still kicking with REW, one of the best acoustic measurement applications out there, and it keeps on getting better. I keep on using it and I keep on getting great results. Two months ago I found out that your method of determining dBFS RMS for...
  8. Has anyone tried to use phone for DB measurements

    SPL Meters | Mic's | Calibration | Sound Cards
    I was browsing the app store on my LG g3 and saw a sound meter I was wondering how accurate these are. I'm sure they are off but by how much? Anyone with an android phone wanna give one a try and compare to a real spl meter. Then report back.
  9. How many db does a second sub add?

    Home Audio Subwoofers
    Rewatched "Fury" yesterday and had the SPL logger going during the tank scene where it was the 4 tanks vs. the one. I had the volume set to 0db on the x4000 and here was my results below. I'm pretty flat response down to 12-13hz in the current single sub scenario. This is with the sub...
  10. 5-10+ dB drop between each SPL measurement over time?

    REW Forum
    I'm trying to find the best spot for my sub using with my laptop with HDMI out to AVR and USB SPL Meter (RS) to my laptop. I notice that the dB reading is highest after I calibrated SPL meter then it would slowly drop off as time goes on. I just lost 10 dB after 10 minute of waiting without...
  11. Peachtree nova 125 is louder on the left by 1 to 1.5 db, ok?

    Two Channel Audio
    Hello, I am a new member. I recently downloaded REW and used my radio shack sound meter to check my system. Using SPL meter option, I am able to consistently detect that left channel output from the Peachtree is about 1 to 1.5 db louder as compared to right channel. How I checked: *With...
  12. Negative dB on RTA meter

    REW Forum
    So I was one of the winners of the miniDSP UMIK microphone giveaway :yay2: Thanks HTS. I got to playing around with it last night. The microphone installed correctly (as far as I can tell) on my old laptop running Microsoft XP SP2, and REW recognized it. I have used REW in the past a bit...
  13. 140 Hz 15 db too loud still not fixed

    Home Audio Acoustics
    I have 8 ft ceilings so I ran this mode program and that gave frequencies of 70/140/280 etc and yes, those frequencies are WAY too loud where I sit in the room (roughly 40% from one wall and a tad off center). So, I made 2' x 2' x 4" mineral wool bass traps and hung 12" from ceiling OVER the...
  14. Pink Noise db Test pre-GIK panels

    Home Audio Acoustics
    So I've been doing a ton of research regarding acoustic panels and I've decided to go with GIK Acoustics. I've spoken with Bryan personally and I've watched every youtube video I could find. I was very impressed by the two I found that played music with before and after treatments and both my...
  15. Can I convert a DB difference to a % difference

    REW Forum
    Hi All This is a bit off topic, but I figured one of the experts might be able to answer this (just getting started with REW by the way--waiting for Galaxy to arrive--looks like a great program) I'm working on a project where I want to express the sound proofing effect of a fabric (in...
  16. setting subwoofer phase without REW, only with dB meter

    Home Audio Subwoofers
    I have a dB meter and want to find the right phase setting for my subwoofer. Am I correct that I can do this by: - Run my front speakers on +-75dB with a 80Hz test tone. - Disable the front speakers and put the subwoofer on a volume that results in +-75dB also with 80Hz test tone. - After this...
  17. REW 5.01 Beta - Soundcard Calibration Issue (dB variations)

    SPL Meters | Mic's | Calibration | Sound Cards
    Hi, I'm a new member and just bought gear to perform room acoustic measurements, however i seem to be stuck already in the soundcard calibration phase. HW/SW involved: Lenovo X201 Windows 7 Enterprise Laptop Roland UA-55 QUAD-CAPTURE with driver & control panel version 1.0.1 (loop from output...
  18. 3 db too hot with SPL meter?

    SPL Meters | Mic's | Calibration | Sound Cards
    Is it true when using Radio shack SPL meter if you set volume to 75db it is actually 78db? So should I just set it to 72db instead. Or set the trim to -3db in the receiver settings? What about when using a calibrated mic and REW, is the db displayed in the software accurate?
  19. 15 Hz, 102 dB and . . a CRT

    HDTV | Video Displays | Processors
    Hi, I have a 15 inch driver that in a DIY EBS alignment can produce with 100 watts, 102 dB at 15 Hz, using only 30% of its 14.4 mm Xmax. :bigsmile: The EBS catch is its big. Ok, I'll put it under the TV. Initially I thought of the ease of construction of Sonotube (cardboard constriction...
  20. Any way to limit gain to +/-10.0 dB?

    REW Forum
    Hi, I am using REW to setup my Onix R-DES EQ. The process is basically that I measure and calculate the EQ settings in REW, and then I copy the settings into the R-DES software and upload it to the unit. It works great. I do have one issue, however. The R-DES box has different limits on the EQ...
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