Room treatment success story


A couple of months ago I asked the forum for advice about what may make the best upgrade for my system (e.g., better amp, sub woofer, etc.) One of the responses was to focus on room treatment/room acoustics. While I had seen mention of the importance of room treatment, this was not originally on my list of possible upgrades. However, it got me thinking and doing more research.

A few days ago I took delivery of 5 GIK Acoustic 244 bass trap panels. WOW, WHAT A DIFFERENCE! I knew my room had a little too much slap echo (e.g., clap of hands echoed a little too long than it should), but I was not prepared for the dramatic change that the bass trap panels made. They not only took care of the slap echo problem, but the bass in the Magnepans have completely come to life.

A few of the very noticable differences:

-- Bass lines are much more prominent and it is much easier to distinguish individual notes (rather than low notes that sound more the same).

-- Vocals are clearer and more focused. For example, Mark Knopfler's vocals on the Get Lucky CD are now much more easily understandable and clearer.

-- Listening to Keb Mo's Slow Down CD, I realized that there were certain guitar notes that without the traps would seem to disappear or have such a lower volume as to almost not there, but now I am hearing notes that I simply could not hear before.

-- Some of my rock CDs that I thought were simply very poorly recorded (and perhaps are) are now much more listenable and actually sound pretty decent.

Before getting the bass trap panels, I had borrowed a REL sub from a friend for a couple of weeks. It sounded great. However, the roughly $400 spend on these bass trap panels made a MUCH more significant difference in the bass in my room than this $1,500 REL subwoofer. (Again, the REL sounded great, but I now realize that I was not able to hear what it or the Magnepans were truly capable of.)

GIK Acoustics was great to deal and was very patient in answering my questions. I am in no way affiliated with them, just a satisfied customer.

So thanks to Lenny_zwik for pushing me in the direction of improving my room acoustics!

By the way, I would still like to get a better amp and a sub woofer, but I plan on my next purchase to be a rug for hard wood floors and a few more bass trap panels (I have a large room).
edge22

Showing 6 responses by inpieces

Edge22,

i'll have my room treated to (can't wait;).
In about 7-14 days.
Though i will run even more than stuff than you.

2 Monster bass
4 244
3 242
6 Tritraps

All but two on stands, the other two will be hanging.

I noticed someone asked on how to know how to position.
That is not difficult.
Best is to start with corners, bass traps (tritraps, 1 in each corner or 1 in each corner behind speaker. Or 2, on top of eachother).
Behind speakers, 244 or 242.
First reflection - 242.
Behind sofa, 1 or 2 monster bass.

Or, why not check Gik acoustics home page or mail/ call them, Frank or Bryan help you out.
They are nice.

It is staggering how much it sometimes interacts.
If you got a chance to hear before and after, you see (hear).
A dealer/ speaker manufacturer, told me straight up. He had been at audiophilers so many times. He was shocked in some cases. Bad set ups of speakers in the actual room. Many clients switched gears like shirts and they had excellent set ups but bad rooms or set ups.

The most problem with this are often with the ladies.
I guess it i somewhat difficult with WAF (wife acceptance facor).
Even small rooms can use quite large speakers if done propperly:)
I know an audiophile who is blind since birth.
When we spoke of placement of speakers in room and also acoustics, he did tell me how our hearing works.
He has also been working in the upper high end and mostly with studios etc over 25 years.
We all do are own conclusions, but he have tought me some of value. Quite often i have noticed he has strong points.

I will not pull all of that here. But i can say, it is very interesting how human brain let us percept.
I usually try to do lots and lots of different set ups with my speakers. I have also noticed, while fine tuning and doing listening, i usually keep eyes closed (not when moving around ofcourse:).
For me, it makes it easier to concentrate on differences.
I am only using, same few reference tracks that i know is working for me.

As i was told, mostly from the acoustic companies that i have approached over the years. When doing one wall, start with that behind the speakers and corners.
I noticed some started off with that behind head.
Well, ofcourse it's pending on the actual room.
Though, it might be worth to consider.
Masking effects is what it's all about, that is for sure.
Rrog,

i only do such listening when i am tweaking. i am talking (re)position of speakers.
Also, my room was in a paint prog, so i do not just suggest all do exactly the same in their rooms. There are key elements that are pretty common though.
I had great contact with a manufacturer, they told me what i ultimately was to work with first.
I have also leveled with 4 acoustic companies before treating this specific room.
Even though they suggest a bit different, the start off point is similar.
Ofcourse rooms alter - even sonics.
There are audiofreaks changing cables, cdps etc etc to balance the percepted sound. Even though they might be better off looking over the acoustics first. Even a room that seems ok, might benefit from treatment.
Some alter this with cables. That is kind of chasing a ghost with butterfly net.
Just currently, a quite large cable manufacturer suggested i would skip the Gik package, and invest the money in their cables instead. They told me many clients had complained of same things as me, and all was bettered with the good cables they make. That pretty much tells me how screwed up the scene can be.
As i leveled pretty much with Tony Gee (Tg-acoustics) about this, he also confirmed how common this is.
I was in at a local small dealer. They have an extremely treated room (with quite large speakers). When i told them, they have great sound in their small room, and that it sound horrible at my friends home (he bought a system from them), they say it is for demo purpose and not at all needed. They say this, due to the fact many clients bought oversized speakers and and expected this would sound great in their rooms. When my friend set up his system, it sounded really bad. Go figure if he should start altering electronics and cables due to the fact he listened to them.
He could blow off so much money and never start off correct.
There are many storries i have heard that are close to this.
Not all have had opportunity to hear what room treatment and better placements can do.
Those that knows, don't have to care for this. But again, not everbody have had the chance to actually go hear differences (before/after).

I still await my full kit. It's currently being built:)
So i'll have to wait.
Hi Rrog and ofcourse the rest of you.

I intended to do an easy compair and not complicate too much. A before and after the tweak.
Mainly keep it down to the most obvious.
Also to see, if it is ok, to use larger speakers in small listening rooms.
I will try to tell of sonics, if it alters or not.
What will change, for better or worse.
How i percept the all in all sound(field) and also, bass, mid and the top.
I only use, the typical start off kit, though, very extended due to the small size of my room.
All in all 7 panels and 8 bass absorbers.

When i had my room painted and requested help.
I explained i wanted pin point focus, heavily reduced flutter echo and fast deep bass with dynamical contrast and impact.
Flutter echo in itself, makes the sound blurr.
If just reducing flutter echo and 1-3 bass nodes (pending on rooms), it is an incredible change.
I hope it turns out well.

Either i start off a new thread named GIK Acoustic treatments (or similar)... or post here.
Expect minimum 10 days as nothing has been shipped.
So, what do you do, with a room that is really quite much to small for the speakers - you just must have?

Does it even work decent?

Counting, from the size of my room and looking on how large a recommended listening room would be - for my speakers (Monitor Audio PL 300).
We talk numbers from 60-70% larger.
My room have these numbers: 515cm wide and 388cm deep. Height (floor to ceiling) about 247cm.

So, how does this work?

In the begining, the room suffered from flutter echo. But to my surprise, not as big of a subject for worst room-boom as numbers suggested.

As i listen to quite much alternative, i also listen to Canadian Frontline Assembly. The album Epitaph, push low bass and trigger nodes like nothing else.
Many highend speakers can sound compressed with this album.
A few speakers sounded just terrible, some are handling it superb.
If this album works in a room, i guess no-one will have problem with bass nodes in that room (happy you;)

For most music and probably 90% of what i have. My untreated room had a clear masking effect due to flutter echo. Also bass made blemishes that added to less than ideal results.
All people does not seem to find issues with this - the dark side of acoustics.
I have friends having even worse. Still changing very expensive cdp, cables etc etc without even caring for the acoustics.
Well, enough of that.

I contacted some acoustic companies and decided to buy what looked most in synergi talking shape/ size and colour options.
My choice became Gik Acoustics. So, i did a check up and found fair kits. I suspected these would not help me. Mosty due to the fact that the kits had lesser panels and bass absorbers, so i contacted GIK.
After same paintings and mails, i decided to buy a kit, suiting better in my room.
Mainly to absorb bass and reflection/ echo.
Most units are made to be wall mounted, or you can use them an optional stands. I decided to buy optional stands making them easier to move + no need to use nails in the walls.

The corners behind the speakers (front wall from listening position), i decided to use TRItraps.
2 units in each corner.

Behind the loudspeakers i placed 1 unit 244 panel, behind each speaker.
Between them, i placed 1 unit 242 panel (center of room).

Behind my sofa, (rear wall), i placed 1 unit of TRItrap in each corner. Above the TRItrap, i was going to mount 1 unit 244 panel, in the angle of rear wall and sidewall.
(i did not)

Directly behind my sofa i placed 2 units of Monster bass absorbers.

At the sides (left / right), between listening position (sofa) and the loudspeakers i have 1 unit of 242 panel at the first reflection.

To detect that is easy, when you sit in listening position, have a friend hold a mirror. When you view the loudspeaker, you see the first reflection.

The remaing 2 units of 244 panels, those that was ment to hang over the TRItraps of the rearwall.
I have now placed these, between the 244 units that are situated behind the loudspeakers and the dual TRItraps .

The difference is a more coherent soundfield. The slight blurr and smear of the flutter echo, and rumbling bass are very very reduced.
The readability - better view the very layeres of material, the dynamical contrast and impact. The silence the focus and depth.
Bass is more agile and clean impact is more firm. The whole music flows different when start and stop are more defined and firm. This is hard for me to put words on, it is just so much better. If you suspect you might need treatment, you probably do.

Sonics does not alter. I would say this is a very good upgrade.

I have a new loudspeaker cable. I compaired these two i have, before i got my GIK kit. The difference is way more obvious now.

I can concluded that in my case this is a very good upgrade.

I think it looks quite good, all units are black, they are easy to move on stands. Music sounds alot better, i better see into to soundfield and better orientate in the event.
There are no downsides of harsh treble response, shrill, thin, cold or too little bass. There are no holes or dips.

I had large industrial absorbers at one time. I bought them to try. Those are not made for music.
What happened was that the sound became dead, it felt as whole frequencies were sucked out and the experience was terrible.

There are probably bad absorbers and treatment avaible.
I have no intention to say these are good if they were not. IMO, this is a very nice upgrade and it helps you better hear what your system can do.

For 90% of the music i have, it is terrific and hope that a few more dare to invest to achieve audio-nirvana. The remaining 10%, is just when the lowest bass is too powerful in it's output.

If you listen alot to electronica with heavy/ low frequent bass. See to it that you are not buying to small absorbers.
As for me, i could use 2 more TRItraps and 1 unit Monster bass more.

I am sorry if it is somewhat inconclusive and/ or unclear - what i experience. If anyone asks (whatever really), i will try to answer best i can.
Kevinzoe,

ofcourse measuring is best. We have a pro company here. They do serious jobs and they are very good and have done listening rooms at high end stores around. Though, i rent my flat. So, i bought what i find best suitable for a future, as i will not live here forever.

Easiest way to describe listening in my room, is like listening through headphones. IMO, very balanced and with high readability and impact.

GIK Acoustics IMO, has been very nice fellows. They have the down to earth approach and always helps with questions and ideas.

It do sound very good here now. When i was into more expensive units i had some visits to audio freaks. Some had home made units, speakers and acoustic treatments. Some had undeniably expensive equiptments and half way to bad acoustics. Far too many have just positioned a system under not best conditions. I fully understand this is not for everyone. I just wanted to chime in as i believe those that gave this more simple approach as i took, would be superbly happy when finally listening. We could all go on trying to perceive an image of what is and what is not.
I guess, for most it's a matter of cost and you mention WAF. That alone, might be most difficult.

My quest was for:
Good to great acoustics.
Appearance/ looks.
How can i use these in case of moving?
How does it affect cleaning my room?

As is, all is fine IMO. There are always more extreme approaches. These units i have do not weight too much either. They are on stands, except for TRItraps. So they are easy to move around. They look realy sober in black.

I had bass absorbers in the past, weight was 50kgs each. They were huge. No more!

Friends who has been here, well, all have there own opinions.
As for how it sounds, none had argued. Most complement to focus and readability. While pushing the limits for higher db, it is an amazing agility and impact. It is easy going really high on volume, as no direct overhang or disturbances are detected. I try keep it at normal to low (neighbours/ complaints are not good). It sounds really good at quite low. But,for the sense of drama, pushing it is quite an experience.