measurement

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...

Audio! Audio! Audio? As the query poses. Do you consider this site’s assessments and discussions to (or should) focus on: (1) Audio Science Review - broadly any form of music playback equipment / setup / process (2) HiFi Science Review - focus on equipment / setups / processes which themselves...

Hello everyone, I’m trying to measure the TempoTec Sonata HD Pro in REW as an example, as I would like to measure some other equipment in the future. System: RPi4, Raspberry Pi OS (Bullseye), REW (Java), EMU 0404 USB. The output level is set to maximum, 1kHz tone 0dbfs. The input level is -6...

Any additional comments? https://www.alpha-audio.net/academy/measuring-audio-hifi-cabling/

I can obtain good frequency response, directivity, and other useful information when measuring speakers outdoor, but when it comes to harmonic distortion, I encounter difficulties. The background noise outdoors is too loud. It's not a problem for measuring high sound pressure levels, but when it...

So I have this new amplifier aune X7S(2021 version) and here at asr it was measured to have rather high output impedance(about 11 ohms). But I also have a topping L30 II with me and I wanted to sell one of the amps so I compared their sound on the single ended outputs with the Hifiman HE400SE(28...

From 2013 onward, I began a systematic survey of FFT measurements published by some German Hi-Fi magazines. Those magazines belong to a publisher which runs its own laboratory, thus ensuring consistency in the measurement method...

I encountered a significant setback while studying the process of measuring the Equivalent Input Noise (EIN) of a microphone preamp. There are several tutorials on EIN measurement available online, but I have many areas of confusion, which has resulted in me spending over a week without fully...

Hi all, Recently bought the Genelec 8030C and Arendal 1961 bookshelf to compare the two. Had the Genelecs for a while and listened to them, love them. Comparing them on Spinorama.org beforehand showed the on-axis and in-room response to be comparable. Tonight I unpacked the Arendals, set one of...