What are the best Room Accustic Treaments members have found?

Maybe time to cut back on the coffee just a tad, lemonhead.

Yes, I scoff at E. Whiner. Your name dropping skills are excellent, by the way. 🤗

One thing I can say without fear of contradiction that does not (rpt not) work is SONEX foam panels. You know what I’m talking about, those sculpted dark gray open cell foam 2x2 panels that are ubiquitous in control rooms and recording studios. SONEX foam and similar products, even foam filled chairs like the IKEA POANG chair, have to be one of the worst sounding materials ever foisted on naive and gullible audiophiles. Even a little bit in the room makes the sound unnatural, phasey and wooly.

OMG 😳 Did I just see lemon head mention Ethan Winer? Now, I’m sure I must be right. Read the information out there. 

“I know HFTs are high frequency transducers but what about transducers for low frequencies?” - That’s gold, Jerry, gold! 

High frequency transducers affect low frequencies of the acoustic waves as well as higher up the frequency range. That’s because - as first reported by Stereo Times for the Franck Tchang tiny little bowl acoustic resonators - small aperture bowls act to “equalize” sound pressure in the room, so all acoustic frequencies are affected. In fact everyone was quite surprised to hear the bass improved so much.

A tip of the hat 🎩 to Acoustic Revive’s QR-8 Quartz Crystals. From the Acoustic Revive web page,


Principle & Structure

Quartz Resonator QR-8 is not magic or occult. Reason why the sound improves by using QR-8 is that because, by placing QR-8 onto an agenda which causes resonance, the resonance frequency of agenda changes and it stops any resonation. Agenda such as plug, connector, parts, equipment switch, equipment housing, and door in the room, windows, wall, floor and ceiling resonates by its particular resonance frequency and by placing QR-8 will change the frequency and stops the resonance. But placing QR-8 to an agenda which does not resonate, adversely QR-8 may cause it to resonate or to over dump. So you have to be careful where you place the QR-8. You can check if QR-8 is causing the agenda to resonate or over dumping by listening to the sound.

At first, place the QR-8 lightly onto the agenda which seems to resonate. If the sound improves, it means that QR-8 has stop resonation. If the sound improves, place the QR-8 firmly for a rigid placement. In other wise if the sound deteriorates, take off the QR-8 and try it onto other agenda. The QR-8`s adhesive power will last for a wile, but if the adhesive sheet starts to lose the power, use the replacement adhesive sheet. Finding the best effect carefully is the most important thing.

You got your Skyline diffusers. You got your Echo Tunes from Michael Green. You got your Acoustic Discs from Golden Sound. You got your tiny little bowl resonators from Franck Tchang and others. You got your crystals and you got your Mpingo disc from Shun Mook. Don’t shun the Mook! You also got your hand built Helmholtz resonators.