Room treatment and speaker placement????

A ten pack of Synergistic Research High Frequency Transformers (HFT’s) will do wonders for a room.

https://highend-electronics.com/products/sr-hft-high-frequency-transformer

@shadowcat2016 it would be interesting and helpful to hear in detail what you did to your room and how you went about it. 

OK, stirred the pot did I?? LOL............I'm a D-I-Y guy, so I took the time to build all my panels, 22 so far, with a few more to come.

Built my panels much the same way as many of the commercial ones, simple wood frame.............I used 3/4 plywood, very cheap that way and works fine.....stuffed with, in my case 3 inch rock wool......There are other things that you can use, but from my research it all performs more or less the same, depending on thickness. Bought mine at Lowes, just because it was cheap....about $1 per square foot..and readily available. I picked up fabric from Joann's Fabric store, although you could get it anyplace. I carefully wrapped the frames, as if they were a Christmas present and stapled the material to the back.......done....Pretty simple really..........The fabric was the most expensive part of the operation, largely because I went with an attractive cotton print, but I could have gone very basic and saved a significant amount..they also have good sales all the time.

You can make the panels thicker for more low frequency control or thinner if you're just trying to clean up the imaging and sound stage...or mix and match.  I went middle of the road and it turned out fine.

As far as how many and where...........first let me say that I am NOT an engineer or acoustics expert.......I just read a lot and largely followed the "smart people" as far as installation.

My room is 14 x 23, with a low, 7'8" ceiling............At first I wasn't sure what to expect, other than an improvement, so I built a few panels at a time, installed them, played music and listened. Each time I heard real improvements and each time I played the same music for some confidence in repeat ability. I played different discs, different types of music and tried to stay with things I knew were well recorded.

I treated first reflection points initially.........sorry Eric, I tried to follow the "professionals"..I figured they knew more about it than I did. YMMV

Then I began to treat the room corners, primarily ceiling/wall, straddling  all corners with the same traps around the room. I have open door ways in three corners, so treating wall/wall corners wasn't necessary or practical in my case. Sound apparently concentrates in corners and reflects back into the room from a thousand different angles......not good.

By straddling the corners, the panel behaves as though it's deeper/thicker than it actually is...........it's all about wave length and you can read about it easier than I can explain it........but it worked..............Despite the fact that I didn't build any "bass traps", the low end of my system got much deeper, cleaner and tighter......I attribute that to straddling the corners with relatively thin panels..........Everything else improved substantially as well.

One important point. Panels that straddle corners should be open in back. no plywood on the back. This allows the sound to pass through, bounce off the wall or ceiling and pass through again on the return trip. effectively increasing low frequency absorption.


I also placed 4 panels on my ceiling and plan to add 2-4 more, as well as a couple more to the rear wall behind me. I have hard wood floors and only a small area rug in that room.

It works guys/girls/folks and it's the cheapest significant upgrade I've ever done.......made me a believer...................Whole project, including fairly pricey fabric cost like $500, maybe less, I wasn't watching pennies that close................You can get several frames from a single sheet of plywood, rock wool or comparable fiber glass is pretty cheap if you shop around. Fabric can be whatever you want to pay...............Suggestion for spousal approval. Let her/him pick the fabric, something THEY like. It will make it easier to get them to allow you to hang boxes on the walls and ceiling!! LOL..............Think of it and sell it as "wall art"...I did and if you pick nice fabric it's not far from the truth............YOU don't care what they look like, you just care what they SOUND like.

For those of you who don't play with tools or don't have time or have deeper pockets than I do, you can buy any of this stuff, pre-made from a number of places..........I like to build things and I had the time.

Any further questions I will answer to the best of my ability, but everything I know I learned from reading articles and blogs by people who had more experience and knowledge than I did...........ain't the internet a wonderful thing :)

One other thing............Some of you folks likely cater to the boutique brands, esoteric tweaks and eschew D-I-Y stuff..............that's OK. If your pockets are deep and it makes you happy, go for it. Lots of people will happily sell you just about anything in this hobby that will "transform" your system, as though by magic..............A plywood framed box, stuffed with insulation and covered with fabric from the local store may not impress your friends............but it works and not everybody has a boutique budget............What WILL impress them and you is the improvement in sound from equipment that you thought you already knew.........I ain't selling anything, I ain't promoting anything aside fro better sound from the gear you already paid for, unless you count plywood, fiber glass/rock wool and cotton fabric.

Set your gear up right, deal with your room acoustics............then you can buy and play with the multitude of crazy tweaks  out there if it makes you happy. :)

Many people cannot use room treatments because their living space is a shared space that also happens to be their living room. Many nice and loving spouses just don’t want to fill the living room with all manner of ugly treatments. Yes they are ugly in the eyes of many spouses regardless of how we think they look.

So for many this is just not an option. In the past I have enjoyed fully loaded, acoustically treated rooms dedicated to audio. We are now empty nesters downsizing and my dedicated music room is a thing of the past. My wife and I discussed the best aesthetic options for our new space and my music/audio needs. The room could not be filled with rectangular boxes of electronics and no acoustic panels, traps and the like were allowed . She was ok with the speakers being placed into the room where they would sound best. She helped pick the model she found attractive and I found musical.

I ended up purchasing a one box wonder with SOTA room correction and have the best sound I have ever had in my home. The unit is the Lyngdorf 2170 and for me it replaced the need for physical room treatments. I know some Aphiles think you still need these physical acoustic elements for great sound, but my experience with the 2170 as shown these (physical acoustical treatments) are not the only means to great sound. Yes, in a perfect world both SOTA room correction and acoustical treatments when combined would make an unbeatable combo.

I know others who use room correction with great results so we do have options today for our shared audio/living spaces. Options that please both the Audiophile and The Audiophile’s wife in our case 🙂