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In Reply to: Without using an equilizer, can I fix this problem? posted by PriyaW on October 31, 2002 at 10:51:17:
Hi Priya,There is a calibration file for the Radio Shack meter. If you haven't, you need to look at the following post that Nemo did a while back.
Have a great day,
Brad
Follow Ups:
Hi Brad,
I tried the website http://www.gti.net/wallin/rsmeterd.htm, but that has been either deleted or moved. Can you please check?Thanks
Hi Priya,Some of them work. Try the below one. I just tried it.
Brad
Hi Brad,
I read the alternative one. It says meter reading is not reliable outside 10kHz and 35Hz. My plot in the original post falls within that area. Hence, I am bit confused as what I have to do next. Are you suggesting that I do all the mods recommende on that page? This is begining to drain me a bit.I agree that I need to calibrate the meter outside those ranges, but if I am within, do I stiil have to do it? Also, the post was for the analog meter. I have the digital version. Do you remember if the ranges were the same?? Sorry to pounce you with these questions (LOL).
The adjustments are for the analog meter only. No one has published a correction curve for the digital one.
Hi Priya,No, all you have to do is add or subtract from the number you took. If something says that at 30hz the meter is +2db, then you should subtract 2db from that reading.
I know that meter readings can drive a person crazy for a while. For one thing, it takes too long to get good readings across the board. Another thing, is you aren't getting small enough increments, to see how bad your room modes are. With my Tact RCS 2.2X, the increments are down to the 1/2 hz area and taken fully with subwoofers within 5 minutes. I can look at the results, move my speakers and try again. Once I try again, I can overlay one graph over the other and see if any improvements. This allows you to move speakers around to multiple locations and help find the best placement.
If you look under the FAQ section, there are some good papers written on speaker placement. That's a good place to start.
Some people might say, "let your ears be your guide", however it is almost impossible to compare 2 different locations from memory. Also, you might gain improvements in the bass and suffer in the midrange. You might perceive this as an improvement and not miss the loss in midrange until later. Very complicated subject.
Hope this helps some,
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