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sweeps

  1. Sweeps for Decware Amps?

    REW Forum
    I'm looking for frequency responses of Decware amps in your systems. Thanks!
  2. Latest Dirac sweeps with SVS Ultra Towers

    REW Forum
    I've been playing around with speaker placement, Dirac curves, Crossover frequency to the HSU subs and I finally have something dialed in that sounds pretty good. Everything 200hz+ I've kept to the standard Dirac curve.... although I think I may bump the 6k-9k down by 2db just to hear what...
  3. First sweeps with REW

    REW Forum
    I finally have my HT setup in my basement. AVR - Denon x4000 with Audyssey XT32 with Sub EQ Subs (2)HSU VTF-3MK4 Sub (1)HSU MBM-12 Mid Bass Module Main speakers - (2)Klipsch RB81 II, Center (1)Klipsch RC62 II, (4)Surrounds - Polk in-ceiling 8" - Left MK4 and MBM-12 on Y-Adapter to left sub...
  4. Measurements from Recorded Sweeps

    REW Forum
    I have experimented with recording a sine sweep and playing it back while simultaneously executing a measurement in REW. (There are occasions where I need to measure a system and there is no audio input.) It works OK as long as I don't try to average multiple sweeps. Has anyone else tried...
  5. 5.01 b22 bug when using multiple sweeps

    REW Forum
    Hi, I think I found a bug (or I'm not measuring correctly...) When I measure with 2 sweeps and looking at the Impulse response graph it seems that the second measurement is delayed by 0.23ms, causing two spikes everywhere instead of one. When using 1 sweep I don't see this behavior. Attached...
  6. Changing # of sweeps radically changes my FR and IR changed with new mic

    REW Forum
    I noticed that when I go to measure, the more sweeps I have REW run the crazier my FR curve gets. I was under the impression that running more sweeps basically just gives you an average of the readings so that if there is some kind of noise during one of the sweeps it won't affect the final...
  7. Measurement sweeps produce distorted sound

    REW Forum
    A number of us over on an AVS REW thread have observed this issue when using REW with HDMI connections. The issue is as follows: the first sweep after switching an input on the Preferences screen will produce a distorted sound rather than a typical measurement sweep. The distorted sound...
  8. ADAM A3X Sweeps.

    REW Forum
    No smoothing, 0-80db 15-21khz I'd like feedback... any thoughts? I tried to attach the project file to this post... hope it worked. Much appreciated. Taken with CSL EMM-6, Behringer x1622 and of course my ADAM A3x's. Soundcard and mic cals. What are those severe notches in the...
  9. problem with REW - sweeps too long / measurement too short

    REW Forum
    Hi, I tried REW with my Mac and my RME Babyface and I ran into some problms. When I do a measurement the sweeps are too slow. If I set the number of sweeps to eight and do a measurement, there are only three sweeps before the program stops measuring. Then it tells me the impulse is not where it...
  10. Subwoofer sweeps

    Home Audio Subwoofers
    Running freq response sweeps in order to help find the best spot for my sub, noticed that my center channel was putting out a lot of sound when running the really low freq sweeps, 10hz, 20hz and 30hz. Verified that center was set to small and crossed at 80z. I can understand getting some noise...
  11. Number of Sweeps Anomaly

    REW Forum
    I have encountered a peculiar anomaly with room response measurements when I vary the number of sweeps. Since the differences I observe are significant, I would like to share the results in this forum to get some feedback. Please take a look at the attached file and help me understand why I am...
  12. Getting "pops" when playing test sweeps

    REW Forum
    I keep getting these static-like pops when I'm running my test sweeps. Usually once or sometimes twice per sweep, and then sometimes it won't do it at all. Additionally, I am getting a ton of audible interference running this from my laptop. I can eliminate approx 95% of the interference by...
  13. REW sweeps w/ ECM 8000

    REW Forum
    Hello-I just ordered my 33-4050 from Radio Shack for $29.99 & Free Shipping. So, I guess my final question before getting started w/all the REW sweeps is, my ECM 8000 mic has a foam cover for the end of the mic-should I use this when doing my sweeps or leave it off? Thanks, Bob.
  14. Taking sweeps with both mains/sub or just one main/sub?

    REW Forum
    Hello, I have been busy trying different settings & etc with my BFD & RS SPL meter with REW. One thing I noticed is that when I do sweeps with just the sound card output going into one channel of the receiver is that the results are way off compared to using a Y splitter running the one output...
  15. Sweeps show a drastic rise. need help

    REW Forum
    I've used REW for the past 3 years and haven't had an issue with it until now. The measurements that I took today all show a 20db rise during the course of the measurement along with the usual FR deviations that I would expect. It is as if the program or the sound card is measuring the...
  16. How to do Continuous Sweeps a la SMS1 with REW?

    REW Forum
    Newbie alert! I am trying to EQ my HT, mainly getting 2 subs dialed, by using a DCX2496 and of course REW. I was playing with an SMS-1 system recently and I really liked that I could do ‘real’ time adjustments to the EQ/filters during the test signal sweeps. I have been looking for such...
  17. Ragged sweeps?

    REW Forum
    Are these reasonable? The mains sweep seems really ragged. Do I need to smooth it? Is this because I measured all speakers? Any suggestions? PB-13 SVS sub sweep Infinity Beta sweep
  18. short sweeps vs long, accuracy of FR

    REW Forum
    I have been tinkering with REW again, and came across something a bit weird, I think. Looking at this graph: The green curve is a 1M sweep (4 sweeps) The purple curve is a 128k sweep. To my eyes the purple is more accurate, with deeper valleys. The green one SHOULD be more accurate, as...
  19. use of multiple sweeps in measurement

    REW Forum
    Hi all just for 'kicks' (aren't I a sad specimen ha ha) last night for the first time I tried a few things, comparing the results from the short sweep (128 ?) then each one up to 1M, and was happy to see that they were all pretty consistent in my room at least, so as I will be doing a lot of...
  20. did sweeps - now what?

    REW Forum
    I finally took the plunge and hooked everything up to run REW. I had some trouble at first because of the inputs/outputs (mic, audio out, aux in, etc.) and how they can be configured for 5.1 computer speakers. Once I got past that, REW was a breeze and I was running sweep after sweep. I posted...
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