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measure

  1. New Room need to measure and adjust room.

    REW Forum
    Hey All, I had bought a U-Mik several years ago and ran some measurements but never fully understood what REW was all about.. I sold the U-Mik as I did not really understand it's worth. Now some years later I have a better understanding of REW and why we need to take measurements.. My Old room...
  2. Measure

    Home Theater Receivers | Processors | Amps
    Has anyone used REW to measure Yamaha RX-V1800 or RX-V3800 before?
  3. Measure time delay with REW

    REW Forum
    I have used REW a bit and can fumble my way through most of what I need to do. But I am certainly am not an expert. I would like to find the distance/time delay from various speakers to my listening position. Is this something REW can do? If so how? My reason is, I am running my subs wireless...
  4. Using REW to measure speakers

    REW Forum
    Iv'e got REW up and running and am using it to measure and create FRD and zma files for crossover design. I have calibrated my EMM-6 mic and Audiobox twoi soundcard/analog interface and have started generating some SPL graphs with the mic 1M in front of the speaker baffle. How do I calibrate the...
  5. Impedance measurment: need to measure source Z

    REW Forum
    I love the ability in REW to measure the impedance of a load, but my task today is to measure the impedance of a source, the output impedance of a line-level device like a CD player or preamp. It's likely to be fairly low, but not capable of actually driving a load equivalent to it's source Z...
  6. will bluetooth speaker latency impact REW measure?

    REW Forum
    all: My bluetooth speaker in my room has very severe issue on the standing-wave. So, I want to use REW to find out the frequency of the standing-wave. But, the bluetooth has a high latency(maybe 0.3 second). I know nothing about the rational how REW measures the frequency response...
  7. Best way to measure Multiple subs

    REW Forum
    Hi All. I have 2 subwoofers in corner cabinets and the only good place to put them in my room is the front corners behind my main speakers. I'd like to figure out how much gain I am getting from them being in the corners. I have BASH 300 plate amps in each cabinets and I can add or reduce...
  8. Unable to measure FL+FR+subs after timing reference update

    REW Forum
    I currently have the latest beta of REW, but ever since the timing reference update, I can't measure 2 channels at once (via HDMI and ASIO). I have not selected use timing reference under preferences and when I select channel 1 and 2 for FL+FR+subs, I get output just from channel 1. The next...
  9. how to measure the effects of diffusers

    REW Forum
    Hi All, I am doing some experimentation with diffusers in my room. I'd like to measure the before and after effects of the diffuser vs flat wall. What is the best way of doing that with REW? Thanks, D.
  10. measure the polarity of a chassis

    REW Forum
    how can I measure the polarity (wrong or good) of chassis with REW ? I measure in a distance of one meter in front of the chassis with the 0 ° Calibrationfile of microphon. thanks, Alpi
  11. measure with latency

    REW Forum
    Hi, I need help regarding the measure in REW. I got equalizer Apo and managed to put a fir filter using convolution. It is actually able to correct the phase reponse wich is great. Now my wonder is to measure the "benefits" but now I am facing a difficulty. Since the filter generates delay for...
  12. Rew to measure preamp outputs

    REW Forum
    I have car dsp that seems to do weird things with one tweeter channel. I have done lots of readings via sound/mic but would like to see what the input to the amps look like. Thoughts on how to do this? I was thinking just rca to 3.5 into the mic input on laptop (I don't have sound card....usb mic).
  13. Bad measure?

    REW Forum
    Hi I have build a couple of speakers and was measuring them to verify that they behaved as I expected. The speakers have two bass elements (8 1/4" Wavecore elements). To measure the elements I did a near field measurement right between the two speakers, so that room modes should not influence...
  14. Feature request: channel select in the measure window

    REW Forum
    It seems the most popular motion of my mouse is to go into preferences, select record channel 2 instead of 1, then go to measure and measure the next channel. Then return to preferences, select the other channel. This goes on and on, back and forth throughout the complex measurement of a...
  15. Measure Bandwidth

    REW Forum
    Hi I have a DSpeaker Antimode Dual Core 2.0 and are trying to work out what the EQ is doing, nothing seems to relate to any bandwidths in REW. I use a UMIK- mic Please can someone help Thanks
  16. How Do I Measure Mains+Sub?

    REW Forum
    Hey, I'm only going to say this once... :foottap: Just kidding! Hope that got your attention. :R Please let me know if any of this doesn't ring true. :nerd: I'd like to clear up some confusion I've come across in several threads the past few weeks. It concerns using REW to measure...
  17. Measure android car head units with REW!?

    REW Forum
    I plan to buy an android head unit. It's said, that these units usually have cheap components (DSP, amp) and are often cheaply build. My equipment: Behringer ECM8000, Edirol UA 101 (USB-Audio), Laptop I have three units to test. It seems to me from listening that they do not sound the same...
  18. Measure toe in - out

    System Setup and Connection
    Hi am trying to fine tune my system by toe in What is the best way to do this e.g. one speaker at a time, then combined etc. More toe in = not as much roll off in the high frequencies? My system lacks high frequencies, once I move them it is hard to get back to where they were Thanks in advance
  19. 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...
  20. How to measure absorbers and bass traps

    Home Audio Acoustics
    I plan to build a few bass traps as described in attached LIMP MASS BASS ABSORBER.pdf So I can tune this absorber's central frequency I would like to know if there is a way in which to measure my prototype absorber using a UMIK-1 and REW V5. i.e. I don't want to build 3 or more such absobers...
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