mahiruha, could you try one thing..this may sound crazy. could you walk across the corners behind the speakers and clap. identify thye place you get Maximum Echo.
Ditto about your seating position...as based on direct + reflecting waves yoy can get a boom on the listening position.
If you get an echo around the corners behind your speakers, then ou need to place
1. heavy absorbent like a bookcase or worst a cardboard box with boooks in the corner or even one of those small square pillows on the upper corner (Ceiling and 2 walls). try to see if the sound is less.
2. If you get a boom in your listening space you may need to move back and forth in the room till you get min sound.
3. Try to model your room in this website (its in german). choose any speaker and try to see which frequencies peak and what are in the trough ( you ca adjust the speakers and the listening position by clicking on it and using the up/down/L/R arrows on your keyboard). do see if the result matches with (2) above. you can play around a bit with position of speakers and listening position to get the best curve.
the morning started off quite hilariously with me mistaking 7.50 for 8.50 but its good you came over! viren's system does sound magical and lets you use some really good NOS tubes..Rajiv is right. Isolation might help. I had a similar booming issue with my Jamo speakers around 7 years ago. When I checked with my Guru (an old-timer called Imran who inspired and answered all my questions patiently), he suggested I add spikes. Spikes reduced the boominess to some extent. He then suggested I put the speakers(with spikes) on a solid piece of stone (around 3 inches in height). This further reduced the boominess. My Guru had one more trick up his sleeve which was to add some weight(not very heavy) on top of the speaker. I experiment with all these even today though I now have a dedicated sound-treated room. I can tell you these simple tricks work. Ofcourse, check with Viren, he will be able to tell you what will and will not work with his speaker design.
Great, even I suggested the same. Let us wait for results.
Even after meeting you, I can't remember how you look. This 007 has some serious hypnotic powers too:lol:
Very interesting, indeed. However, I have a question/comment: I'd not call it strictly isolation. The boominess is caused by a resonance of sorts at certain frequencies, so you want to damp that or transmit that away. I think this is what the spikes are doing. They are transmitting some of the extra energy away through the spikes into the floor. On the other hand, since the contacts with the floor is only through the pointed ends of the spikes, the speakers are actually isolated from any floor vibration. So I think this is the job the spikes are doing: letting a one way traffic. Please do not hesitate to correct me if I said something wrong.
i just wanted a slab to plonk my speakers on hence the granite. there's a layered material stone the name of which i forget right now. looks pinkish... indian slate? that might be better. also i've not bothered to keep the spikes pointing down. the base is on the ground the points are touching the granite. hope this helps!I am with you Asit. You have explained it very well.
Very true Asit, I totally missed the fact that Mahi's speakers were rear-ported. Mahi should try pillows behind the speaker as suggested by Sumit. Also try bolsters(pillows used in Dewans) an the four corners of the room. Arrange them one on top of the other to form a cylinder.
Viren, would this make the high frequency a bit recessed and and give the perception that the midrange/bass is more heavy ?
Hello viren,
