measurements

[Background & Introduction] Hello everyone, this is my first post on the ASR forum. I am a PhD researcher in the field of mechanical engineering. As an audio hobbyist, I have been exploring Hi-Fi for six years, during which I developed a customized HRTF (Head-Related Transfer Function)...

[Introduction] Hello ASR community. I’ve been working on a project to push the measurement limits of a home environment, focusing on how far consumer gear can go when the electrical environment is fully optimized. I wanted to share a milestone achieved using my Yamaha Montage M as the source...

Hi amigos I wanted to share with you a little presentation of these bookshelf speakers that are little known to the general public... I haven't found much information on the web about these Davis Dufy HD speakers which are made in France. I had the opportunity to get a pair for a small price...

Hi amigos, I've been eyeing these Wooddiy Panda6.5 speakers for a while now (1300€ shipped). The measurements seem good to me and I imagine that the manufacturer cloned the PURIFI PTT6.5X04-NFA-01 woofer.These are 3-way bookshell speakers with a passive radiator. Has anyone here had the...

Hello all, Last week I was lucky enough to get my hands on a Marantz SA-14 CD/SACD player. It had some issues with the laser pick-up and I was tasked with fixing it. I think this is the highest end CD player I have ever got my hands on. I think it was around 3000USD back in 2002 or 2003. The...

For anyone that read the 4th Gen 2i2 Review and is curious about how the upper-end of this generation fares, especially when it comes to output volume peculiarities, given 16i16 and up all use a digital volume control instead of analog: Here are my own 16i16 measurements. I simply downloaded and...

Any good websites or YouTube channels that explain this stuff in a beginner-friendly way? Preferably ones that focus on measurements and real data, not just “it sounds amazing” kind of reviews. Would love any recommendations. Trying to learn without falling down the audiophile rabbit hole too fast.

Using the multitone analyzer app and a basic loopback setup to measure the ADI 2/4 SE PRO with DPS-2, nothing special like summing or mono. These are the measurements I got running -1db play gain and -1db analog output with both the ADC and DAC output set to 24 dBu SINAD: 50hz: Multitone...

Hi everyone, I have some thoughts/questions about creating filters for my new speakers. I built the kingroy mk3 kit by seas and want to use the fir capability of the hypex amps. Right now I use the dsp preset 1 provided by Seas. I used the mmm technique to measure a sphere around my listening...

I've posted an evaluation of the J-Box III speaker measurement system if anyone is interested: https://www.htguide.com/forum/missi...ment-tools-techniques/957531-j-box-iii-review

In this video, we sit down with Wayne Parham, the visionary founder of Pi Speakers, to dive deep into the world of high-quality, custom-built speakers. Wayne shares his journey from designing speaker systems to building one of the most respected names in the audiophile community. Discover the...

Hello! This is a quick review/measurements set of a Pioneer DV-565A CD/DVD player, tested in CD mode. The unit itself is built and feels like a typical Mid-Fi: generally pleasant appearance, but all buttons have almost no travel and sometimes require force to be activated. We have a decent...

Hello! This is a quick review/measurements set of a Pioneer DV-717 CD/DVD player, tested in CD mode. I was loaned this unit just for a few days, so I took an opportunity to measure such a high-end (for early 2000s) device. Well, at least it looks cool. Released in 1998 it had a price of...

Hello all, Here's some measurements of the Focusrite OctoPre MkII 8-channel microphone preamp and ADAT ADC. My unit is from 2011, so I guess you could say it's a vintage piece of gear :p. This unit can operate as a standalone analogue preamp (instrument/mic/line input direct to line output -...

Hi! Are budget audio interfaces (like umc22 or 204hd or <$70) suitable for measurement microphones and room correction processes? Budget udio interface + calibrated good mic or just umik1? Btw I don't have any dac, exept cx31993 at the moment.

Currently have a Technics SL1501 Quartz that was salvaged and repaired from yahoo auctions .It is connected to the fosi phono box x5 I currently have it with the audio technica atvm95e which is an alright cartridge. I want to upgrade it to something else down the line and alot of people...

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...

SMSL A100 amplifier review This test review was performed to comply with FTC: 16 CFR Part 432 (July 5, 2024) - Power Output Claims for Amplifiers Utilized in Home Entertainment Products The SMSL A100 is a small, affordable, 2-channel Class D amplifier. It embeds an Infeon MA-12070 amplifier...

Hi, This is my second attempt at CD player measurements, based on the knowledge I gained from ASR. Many thanks to the members who contributed to developing this part of the reviews, especially @NTTY, who shared their measured files with me. Some of these files were used in this review. The...

Hi, This is a measurement of the phono preamp Behringer PP400. It is a simple preamp without any switches and costs around US$25-30. For measurements, I grounded the PP400 through its output to the analyser. Using a dedicated screw caused significant distortion from the power supply. Below...