The golden triangle and the Sumiko/Iron chef methods are both posted here.
http://www.thecarversite.com/yetanotherforum/default.aspx?g=posts&t=189 |
Hallelujah! Progress is good, congratulations |
Make two panels of thin plywood or other thin material large enough to dampen behind your speakers, cut out and staple egg crate mattress pad to the plywood, have your wife pick out fabric (softer the better) and cover your panels. Put them on the wall behind your speakers... Pull your speakers out as far as possible each time you listen.
It will help quite a bit, your wife might not allow it.
You really need to be a minimum of 2 feet from all hard surfaces, 3 is better.
Good Luck, Tim (budget audiophile for 32 years) |
Hello Golden Ear,
I would try a couple of things, I still believe that it is most likely the room. 1st, take Tish's advice and check to see if you have your positive and negatives reversed. I'm sure that you don't have 1 reversed because you are pulling a center image. These are probably ok, Next, Someone up the chain recommended that you put a pillow in a corner. Take the corner that you have moved your system toward and stack pillows as high as you can. If this removes you bass issue, let me know and I will help you tailor an inexpensive bass trap. How far are you from the nearest side wall and are your speakers towed and are you useing the golden triangle rule? These all matter. |
Kijanki, in wave length yes, but the corners are acting like a horn load and things around the corner can change or break the wavelength. We need to kill the frequencies from being radiated from the horn. Tim |
By the way, I cannot imagine your chair being hard enough to reflect bass wave, but for now, just put a blanket over it and see what happens. Tim |
Kijanki, are you willing to build your own traps?
Go to hardware store, buy 8 inch sewer pvc pipe, wrap that in unfaced fiberglass, cover it in cloth, attractive top and bottom cap (maybe a 2x12 cut and routed, painted or stained, it works great.
6 foot trap cost about $25. |
Well you make me chuckle, I hate sleeping on the porch. Get the most massive soft object that you can. Find the song that is most objectionable. Put this soft item (a wild bear would work) behind one speaker....Didn't work? move it behind the other speaker.... Didn't work? Move it to a corner.... Didn't work? Move it to the other corner... I noticed one corner has a table, try it above and below the table...If it helps a bit in one location, your are on the right track, If it doesn't work at all???? |
Yes, these would be for corner traps, in an earlier post, you commented, "but I still need to take care of the corners" and yes, thin materials are useless. Are you hearing reflections from your vaulted area? Years ago, I ran Marcof Electronics/SpeakerCraft out of St. Louis, we had a dedicated listening room, the best it ever sounded was when we wrapped standard R13 fiberglass in speaker cloth (very nicely done), we did a live end/dead end room. The fiberglas was covered in brown cloth and black cloth and hung in rows, alternating the colors. Very nice room. If I tried that at home, I'd be asking Golden Ear to make room for me next to him on his porch. |
Hi Kijanki,
I asked about hearing from you vault from dealing with pro sound equiptment. Back in the old days, I actually built several systems for night clubs and church's. Inevitably, I had to deal with sound reflection and absortion from high ceilings. Without fail, when we damped upper reflections, the room was better and you could hear the difference at floor level.
I can't answer the differences between your Hyperions vs Paradigm. I've never sat in front of Hyperions, but they look great. |
Kal,
I've never read a thing on the subject. My Experience is just doing, doing, doing. Trial and error and being around alot of people who tried and failed many times before me. Everything that I've mentioned is proven only by me to me, But all used many times and as you can see, I've been creative more than once on making my own traps and diffusers. Now after 30+ years of mistakes, I typically am able to solve most issues, but one thing that I know is, I don't know much. If I were going to buy one of these two books, which one would you recommend? |
I have EQ'd a few places in a professional environment and have experimented with eq's in audiophile systems. There is no doubt that if you have a spectrum analyzer and a mic that you can eq a room to be perfectly flat. It is a must in a church or even a night club. My experience in the audiophile home setting is not as good. There is always a grain involved or even though bass is now flat and accurate, the amp seems to have lost attack or mid range is natural, but has lost a sparkle or warmth. I prefer room treatments first and a RTA & EQ last. I am a electronics buyer (among other things) by profession, so I still go to quite a few shows. Recently I came across a well known mid to high end line (sorry, I forgot which one, I'll write if it pops in my head)that had an RTA and Mic Built into a Receiver, this is a line that I normally thought of as seperates. They eq'd the room fairly quickly and I have to say that I was quite impressed. No, not hard core Hi end, but Nice bottom, smooth mid, a high end that was not nasty and had a sound stage. So, I believe that it can be done. Maybe I haven't found a good enough eq. |
By the way Kijanki, a reverb effect is exactly why we treated high ceilings. Things just bounced around up there and made their way back down, it came across as a delay effect. |
The Panels I've done looked wonderful. I don't see why you would get the idea to wrap them in Burlap or have plywood showing? You have to wrap them in Cashmere. |
I've never put lights in them, but shop for low voltage LED's. It wouldn't be tough and I could certainly guide you through it.
If you end up needing them, approach your wife looking for her advice, ask her for help, get her involved, let her pick out fabric.... or put a space heater out on the porch, its getting cold. |
Thegoldenear,
If the Sumiko method gets overly difficult and you are in a standard rectangular room, the Cardas golden triangle also on the same site, should be very similar in final placement. It has already figured basic room geometry and gives measurements that will put your speakers at their optimal placement. I have seen in narrow rooms, where the Sumiko method would give better results, because of boundry issues, but normally, you should end up with very good results either way. I only mention it for ease of use, not because its better. Tim |
