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Sound Level Meter....


Ghostkid

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On 1/31/2005 5:57:23 PM ct1615 wrote:

Yes I know, it stated all that in the instruction maual.

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how were the batteries then? it sounds like you may have gotten a faulty unit. to be honest, i thought you knew how to use it, but i've come across so many people where they simply just dont' get the concept and thus can't use the meter correctly. It's very frustrating when you're trying to tell someone that it's not too loud when they steal the metter and point out that the needle moves when they put the dial on 120...

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The MCACC that Pioneer has in their line. (Multi-Channel Accoustic Calibration) is excellent. Many people report that they have solved tuning problems with speakers that they have not been able to solve. Especially getting seamless integration with subs and mains.

Mine works great.

http://www.pioneerelectronics.com/pio/pe/images/portal/cit_3424/130915156AV_2004_Bro.pdf

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RS closed out the old model of the analog meter early last year (or before). They have a newer model now.

I have the digital version and it works just fine.

You can also use it as a powered microphone for input to frequency graphing programs etc. The mike is omnidirectional and does NOT need to be pointed at the speaker. I point it straight up in the air to pick up all the speakers when doing a calibration.

The MCACC and similar systems often come up with some weird combination. I suggest using a manual calibration at least as a sanity check.

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I use the ananlog model and most sites recommend this versus the digital

Since the RS SPL meter is not truley accruate

Adjustments to the readings should be kept in mind

here is the link that shows correction values

http://www.danmarx.org/audioinnovation/rsmeter.html

here is the contents of that page:

Radio Shack SPL Meter

Correction Values for Radio Shack SPL Meter.

10hz........+20db

12.5hz.....+16.5db

16hz........+11.5db

20hz........+7.5db

25hz........+5db

31.5hz.....+3db

40hz........+2.5db

50hz........+1.5db

63hz........+1.5db

80hz........+1.5db

100hz......+2db

125hz......+.5db

160hz......-.5db

200hz......-.5db

250hz......+.5db

315hz......-.5db

400hz......0db

500hz......-.5db

630hz......0db

800hz......0db

1k...........0db

1.25k......0db

1.6k........-.5db

2k...........-1.5db

2.5k........-1.5db

3.15k......-1.5db

4k...........-2db

5k...........-2db

6.3k........-2db

8k...........-2db

10k.........-1db

12.5k......+.5db

16k.........0db

20k.........+1db

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