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distortion

  1. System Setup and Connection
    Hi, I just got a pair of adam audio T5V speakers, I purchased a pair of XLR to 3.5mm Aux cables so that I could connect them to my PC, these are then put into a headphone splitter and plugged into my line-in port on the back of the PC, however when they are connected the sound is severely...
  2. REW Forum
    When I perform a sine sweep measurement and select the distortion display the measurements of distortion (% or dBr of the harmonics or THD) are often not displayed in the lower panel. The attached screen shot shows this situation. Sometimes the measurements appear, sometimes they don't. I...
  3. REW Forum
    I have a two-way loudspeaker system in which I do not understand the THD measurements I obtain with REW. The woofer THD measures like this (first jpg) before the crossover filtering (low pass LR2, miniDSP): Then after the low pass LR2 filter it looks like this (2nd jpg), with lots of...
  4. REW Forum
    Although I had successfully measured amplifer distortion at the loundspeaker terminals, when I did this a second time I managed to damage my inbuilt PC sound card. I was not using a voltage divider probe since I knew the AC levels were no more than 250mV. I don't fully understand what went...
  5. System Setup and Connection
    After saving and planning for two years, I finally set up my 5.2.4 Atmos home theater. Instead of a receiver, I purchased a Marantz 7702MK2 processor and two amps—Parasound Halo A51 and Emotiva XPA 5. Main speakers are Wharfedale Jade 7, Jade 5 for surrounds and Jade center. I have four in...
  6. REW Forum
    Hi, I have been using REW 5,16 (Windows XP) for nearly a year and have just turned my attention to the distortion graph for earlier measurements of speaker performance made with a swept sine signal. Sometimes a graph is not available, often for the first measurement in a series (on the same...
  7. REW Forum
    Hi guys. I'm not seeing a distortion plot with an imported impulse response from Acourate. I imported a 2448 wav from Acourate into the Osx version of REW. I can see the impulse, frequency response, waterfall, but no distortion plot. The get info said the impulse was at negative 125 ms so I...
  8. REW Forum
    I am using the latest MacOS REW version 5.19 beta 3 to display multiple distortion plots. When I try to switch some controls, nothing changes in the graph. This usually includes changing from per cent distortion to dB levels, sometimes changing the type of distortion, and rarely when changing...
  9. REW Forum
    Dear folks, My first post here; so I´m sorry if I may ask thinks which will "rolls your eyes" ... I highly miss the possebility to overlay a set of distortion measurements to compare a set of LS. There is an old thread from 2015 which a user export the measurements of every single measuremtn...
  10. REW Forum
    If possible, a checkbox to calculate the distortion only on the visible area of the RTA graph would be excellent. Often measuring at higher frequency rates makes it much quicker, but there's often a rise in noise above 24 or 48khz. An option to limit the distortion, THD and THD+N calculations...
  11. REW Forum
    Anyone have any idea why I would get random snaps/crackles/pops that, once they start, will get more and more violent until the sound out of one channel will be completely distorted? It will continue when I stop and start playing from that channel. If I switch channels, play something, then go...
  12. REW Forum
    Is it possible that REW is skipping distortion measurement on the 'first' measurement performed right after opening the application?
  13. Electronic Processing/Equalization Devices
    I have four 18's with a Speakerpower amp. I got my response flat as a pancake with a MiniDSP. Problem is though, with big bass hits when several frequencies are being thrown around like with an explosion, I get all kinds of distortion. The bottom end falls off and it's almost like the...
  14. DIY Speakers
    I am putting in a stereo system into an offroad car. I got some custom fit fiberglass pods for the fronts and a sub. I knew going into this the pods for the front are going to be way to small for the drivers. I ran a few sweeps with REW to see how bad it is going to be. To my dismay the...
  15. REW Forum
    Hi ! Interesting 5.14 version ! I spend a lot of time comparing loudspeakers, and especially their distortion curves. REW allows for overlaying many parameters (SPL, phase, Impulse, GD...) but not distortion. So, I'm used to export distortion data to Excel and then generate curves, such as the...
  16. REW Forum
    Hi, I would like to point the attention of REW developers to this fresh AES paper published a few days ago: Synchronized Swept-Sine: Theory, Application, and Implementation The paper claims that using their own swept sine function and analysis method leads to better HHFR (Higher Harmonic...
  17. REW Forum
    how to set parameters for reading the level of distortion?
  18. REW Forum
    Hi! I only downloaded the 5.1 version (which has the distortion option) this week. Comparing the graphic of my B&W 602 S2 with the Samson Rubicon, there´s a huge diference in the highs. This 602 tweeter is often related as "harsh" , and I agree at a certain point, altough in a bigger room it...
  19. Home Audio Speakers
    My first movie I played was the first fight scene on Gladiator... I thought the SVS Ultra center was blown :( major distortion... clipping etc... after some major panicking and research I was able to determine that its' the movie as found by this guy on this forum...
  20. REW Forum
    This is the basic response of my sub in room, I have a big mode at 40Hz. I can take that down with a single PEQ filter easily enough and get a response like this If I look at the distortion view at higher output levels, I see this 2nd harmonic distortion spikes at 20Hz 3rd harmonic...
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