measurements

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...

Here are some measurements of a Marantz CD-63. NOTE: The HDAM modules have been removed from this player, so it's no longer standard. No other modifications or upgrades have been carried out. The PSU appears to be a little noise (50Hz spike) however I've not looked into this. Also, I seem to...

So I recently changed my rear atmos speakers to xtz atmosphere s2. I had very small sat speakers (monitor audio mass sat gen 2) up there before. There looks to be a -15db dip at 5k? to about 10k. What has caused this? Its an identical dip for the top rear left and right speaker The first photo...

Hi everybody! @NTTY's recent CD players measurements sparkled an interest in me, so I tried to be trendy and measure my disc playing devices. Attention: I'm a noob at measuring things (at least now) + English isn't my native language (as you can tell by location), so, sorry in advance) Well...

What is the proper procedure for measuring the absorption coefficient of an acoustic panel? I've been making DIY panels for a bit, but just broad band velocity traps made from either fiberglass or rockwool insulation. I want to start making tuned bass traps, Helmholtz and membrane traps. But...

Hi! Inspired by NTTY's recent posts, I decided to measure my CD and DVD players, but that rises 2 questions: What signal types should I burn onto a CD? Is there an "industry standard" CD that I can just copy and be good to go? From my point of view, a simple test CD have to consist at least...

I've started to have some fun measuring my speakers all over the house. The following are measurements I took of a Samsung Soundbar that I've got in my living room. I measured this flat at first, but it has no bass at all and the HF roll off made them too dark, requiring very large boosts in...

I've had this pair of Alesis M1 Actives for a while, but stopped using them because I just didn't like how they sounded and even using Sonarworks Sound ID couldn't save them. I wanted to see what exactly was happening with them, so I used REW to finally see what's happening under their hood. I...

Our company purchased several of these 16 channel DACs to expand the capabilities&flexibility of IEM racks I build and tour with. They're fairly inexpensive at ~333€ a piece (20€ per output channel!). The DAC was fed via Ultranet from my X32 which was connected to the PC via USB (48KHz). The DAC...