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-   -   SPL meter corrections? (http://www.diyaudio.com/forums/multi-way/27704-spl-meter-corrections.html)

masterp2 6th February 2004 03:21 PM

SPL meter corrections?
 
Are there corrections for the "digital" RS meter somewhere? I don't have an analog meter.

officeboy 6th February 2004 03:27 PM

http://www.gti.net/wallin/audio/rsme...5/33-2055.html

masterp2 6th February 2004 03:36 PM

Tanks for that link, which describes how to mod the meter. I won't be doing that. I don't see any corrections. Are they the same as the analog meter?

officeboy 6th February 2004 03:48 PM

hmmm, how else would you correct it? if not to physically correct it.. or are you looking for a calibration file?:confused:

masterp2 6th February 2004 03:54 PM

yep, sorry. Is the calibration the same as the analog

masterp2 6th February 2004 03:57 PM

Correction factors?

officeboy 6th February 2004 04:03 PM

Try this thread on the speaker workshop forums.
http://www.speakerworkshop.com/forum...ghlight=332055

Ron E 7th February 2004 01:51 PM

These are what I measured on-axis for my analog model from the RCA output (not the meter movement). I doubt the digital model is much different. A positive number means the meter response is too high and vice versa. This is a comparison to a Behringer ECM8000 rather than an actual calibration, but the ECM8000 is said to be +/- 0.5dB up to 10kHz and perhaps -3 at 20kHz.....

FWIW, this curve is quite close to one published by ETF acoustic, and also to the curve enclosed with the meter instructions.

200 0.1
214 0.3
230 0.3
246 0.3
264 0.2
283 0.2
303 0.3
325 0.4
348 0.4
373 0.5
400 0.5
429 0.5
459 0.5
492 0.4
528 0.3
566 0.1
606 0.0
650 0.0
696 0.1
746 0.2
800 0.3
857 0.5
919 0.5
985 0.4
1056 0.6
1131 1.0
1213 1.1
1300 0.7
1393 0.6
1493 0.6
1600 0.3
1715 0.2
1838 0.6
1970 1.6
2111 2.4
2263 3.1
2425 3.2
2599 2.6
2786 1.5
2986 1.4
3200 1.9
3430 2.5
3676 2.1
3940 2.1
4222 2.4
4525 3.1
4850 3.0
5198 3.3
5572 3.8
5971 4.6
6400 4.6
6859 4.2
7352 3.3
7879 2.6
8445 2.5
9051 2.0
9701 1.1
10397 -0.7
11143 -2.4
11943 -3.4
12800 -3.7
13719 -4.2
14703 -5.9
15759 -7.0
16890 -7.8
18102 -10.1
19401 -12.2
20794 -12.8
22286 -13.0

mikee12345 8th February 2004 01:19 AM

just keep searching online-ive seen it.

its something like 1db at 50hz and 5db at 20hz...only worrysome if ur into subs...also rolls off after 10khz like ron E shows

get a wm-60
Cheers

Salas 8th February 2004 12:45 PM

A or C?
 
Is that on IEC A or C compensation switch position? slow or fast?


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