measurement

Hello to everyone. This is a review and test of the Pioneer DV-868AVi DVD-V/A, SACD and CD player. This is an European model. Its US equivalent is known as the Elite DV-59AVi. Both model actually share the same service manual. There is also a seemingly similar Asian model known as the...

Hi amigos, I tried some measurements of my current system. Please put the measurements into perspective and thank you in advance for your indulgence as I am not an expert in this area. Please note that I did several listening tests before taking measurements. Several people recommended using...

Introduction On August 15, 2025, at the 19th Shenzhen International Audio Show held in Shenzhen, China, Moondrop introduced two new planar magnetic headphones. Moondrop is a brand widely known for its well-tuned, neutural sounding IEMs with cartoon child figures printed on the package of...

I've posted this thread on the pro-audio, but I think it's better of here because it's a bit more technical :) -- Hi all, I'm the sound guy of a 7 piece rock and pop (cover)band, and I tow my system from gig to gig. I have several sets for smal gigs and bigger gigs. For smaller stages I use...

The blue is the measurement result of open-ear earbuds, the red is harman2018, the orange is the artificial ear response I measured directly at a close distance of 30 degrees using KH120, and the green is the 30-degree response of KH120 after I removed the soft pinna. It seems that every time I...

Hello, I would like to make a suggestion that DAC reviews included PCM filters responses charts, not only for single-speed sampling rates (44.1khz, 48khz) but also for double-speed (88.2khz and/or 96khz). The reason is that it seems that for some DACs, the filters' responses and efficiency are...

I have been thinking about measuring and EQing my Beyerdynamics DT 900 Pro X and ZiiGaat Nuo with REW. Does this translate to noticable real-world benefits?

This is a collection of measurements of Diptyque DP 107 planar-magnetic/quasi-ribbon floorstanding loudspeakers. I was curious how they measure and was not able to find any reasonable measurements of the loudspeakers from this brand, so I tried to did them myself. All measurements are done in a...

Here is the frequency response for the new Adam Audio H200 closed back over ear headphones for anyone curious. These headphones have very shallow earcups so dumbo ears beware! Earpad Dimensions Height: 65.00mm Width: 40.00mm Depth: 25.80mm Below is the frequency response measured on my...

If you just want the actual mod and arent interested in the journey just skip to post 2. Here are some experiments you might find interesting anyway. Individual measurements below, where you can see the harmonic distortion and group delay. Note that the cursor line is the same in all the...

I've got a GIK 244 Bass Trap for Christmas and took the time do do some measurements and would love some feedback and suggestions. I'm using 2x Swissonic A306 connected and crossed over at 80Hz via a SVS SB-1000. My Dac and DSP is a Qudelix 5k. (The Speakers also have a build in ADAU1701 DSP...

Hi everyone and happy holidays! I know people ask the question and there is some debate back and forth about EQ'ing/room correction over 500 Hz. From everything I have read (which likely isn't even scratching the surface), it seems like more people believe we shouldn't EQ above 500 Hz. Okay...

Ole Wolff's speakers have extensive documentation that looks convincing, but I haven't found any independent measurements. Their measurements were also made on an IEC318 coupler that doesn't measure honestly under 100 hz according to ISO, so I doubt that the actual frequency response is this...

Hey Guys, I'm really not an Expert of Measurements or Room Acoustics.. I'm just a Music Producer / Singer-Songwriter from Germany and I want to get my Room sounding right with DIY Treatment trough try & errow.. I did a few Measurements in REW of my Room and also placed the Measurement Mic...

So I've had this player in the closet for many years. Did not get much use due to use of streaming and ripping my CD collection. But anyway, it contains dual Wolfson DACs WM8740 and with the use of @NTTY s recent work I ripped some test files to CD and made a few tests. This is not a...

Hi, this is a review of digital to analog converter which I bought on a local (Polish) e-commerce platform. Since it is a no-name company, I called it $5 DAC which also indicates its price. You can easily find similar DACs on Amazon or Aliexpress but the price can vary from $5 to $20. The...

I'm currently trying to figure out how much room gain i get in my "casual movie watching/gaming room", so that i can choose a fitting subwoofer for some infrasonic Bass, when I've got some money saved up. My room is 4.5m x 2.7m x 2.5m -> Room Gain should start at ~38Hz. My Though process was...

Hello, I'm having trouble understanding and diagnosing my tweeter's impulse and step response. The negative peak seems to be greater than the positive, and the positive seems to be split. This was measured using a UMK-1 3 inches away from the driver. I'm unsure what to make of it, whether...

I have been inspired by @JP 's various scripts for measuring cartridge frequency response and plotting W&F. It gave me an idea of writing a similar script to calculate the RPM of a turntable platter with as much precision as possible. I settled on a method of using the 'click' that is produced...

Hi, here is my very first review, of the audio interface. The device under test was interface RME Fireface UC and measures were conducted on Audio Precision APx525 analyzer. Based on the results I started to worry that something may be wrong with the measured interface. Other RME product...