SPL Meter Correction Tables - Page 8 - AVS Forum
Forum Jump: 
 
Thread Tools
Old 03-07-2013, 07:37 AM
 
BeeMan458's Avatar
 
Join Date: Jun 2012
Location: Magalia, CA
Posts: 8,374
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 801
Quote:
Originally Posted by DrPainMD View Post

Is there anything new on this front that can be added to THIS thread?

Only that there are better sound meters available at a reasonable price. The Radio Shack meter is not the only sound meter available to forum members. I'm on our fourth sound meter and have found there's life outside of Radio Shack provided sound meters. As encouragement, folks can/should look further for their sound meter needs then Radio Shack. Just saying.



.............................................................

Disclosure, I have (currently in excellent working condition) and have had a Radio Shack digital sound meter for about fifteen years.

-
BeeMan458 is offline  
Sponsored Links
Advertisement
 
Old 03-07-2013, 07:59 AM
AVS Addicted Member
 
Bill Fitzmaurice's Avatar
 
Join Date: Nov 2009
Location: New Hampshire
Posts: 10,210
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Liked: 1684
Quote:
Originally Posted by kaigoss69 View Post

I also have some question I hope someone can answer. I have the newer RadioShack digital SPL meter. What correction table applies, when I am reading off the display? When its says "-10 dB" in the correction table, does that mean I add or subtract 10 dB from the actual reading? What weighting do I need to use, A or C, and what weighting was used for the correction data?
-10dB means the meter reading is down 10dB from actual. Always use C weighting. FWIW the capsule used in the RS meter is ubiquitous, it's used in most meters and many mics. You'd be looking at adding another zero to the price to get a significantly better capsule.

Bill Fitzmaurice Loudspeaker Design

The Laws of Physics aren't swayed by opinion.
Bill Fitzmaurice is online now  
Old 11-10-2014, 02:17 PM
AVS Special Member
 
saprano's Avatar
 
Join Date: Oct 2007
Location: Bronx NY
Posts: 3,454
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 132 Post(s)
Liked: 275
Quote:
Originally Posted by cyberbri View Post
Quote:Originally Posted by Kevin12586

If this has been answered already I apologize and ask to be pointed to my answer. I have a digital RS SPL meter, but from what I have seen the correction numbers are for the analog meter. Do the same numbers apply to the digital meter or is it accurate enough not to need correction numbers?

Thank you



The newer digital meters are much more accurate, to within 1/2dB ~ 1dB for most of the bass range.

I use one, and calibrate for music to 0~1dB over, and for movies 2~3dB over my speakers (with the sub eq'd very flat first).
Is this still true? I have a digital meter i bought a few years ago. I was always using the analog corrections.

home theater addict
saprano is online now  
Old 11-10-2014, 02:36 PM
AVS Special Member
 
saprano's Avatar
 
Join Date: Oct 2007
Location: Bronx NY
Posts: 3,454
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 132 Post(s)
Liked: 275
Quote:
Originally Posted by Joe741 View Post
ToTo Man, try these:

LF corrections for Radio Shack 33-2055 meter
These are for the current digital meter used as a microphone.

10 -5.66
11 -5.25
12 -4.66
13 -4.20
14 -3.80
15 -3.50
16 -3.30
17 -3.10
18 -2.90
19 -2.70
20 -2.50
21 -2.30
22 -2.10
23 -1.95
24 -1.80
25 -1.60
26 -1.40
27 -1.15
28 -1.00
29 -0.90
30 -0.75
31 -0.65
32 -0.55
33 -0.44
34 -0.33
35 -0.22
36 -0.11
37 0.00
38 0.08
39 0.15
40 0.22
41 0.34
42 0.36
43 0.41
44 0.45
45 0.49
46 0.52
47 0.55
48 0.59
49 0.60
50 0.62
51 0.64
52 0.64
53 0.64
54 0.63
55 0.62
56 0.60
57 0.59
58 0.56
59 0.53
60 0.50
61 0.48
62 0.44
63 0.41
64 0.39
65 0.37
66 0.36
67 0.34
68 0.30
69 0.28
70 0.27
71 0.30
72 0.32
73 0.34
74 0.34
75 0.35
76 0.36
77 0.37
78 0.38
79 0.39
80 0.42
81 0.42
82 0.43
83 0.43
84 0.43
85 0.43
86 0.43
87 0.44
88 0.45
89 0.45
90 0.46
91 0.46
92 0.47
93 0.48
94 0.48
95 0.49
96 0.49
97 0.50
98 0.50
99 0.50
100 0.50
101 0.50
102 0.50
103 0.50
104 0.50
105 0.50
Anyone know if these are still good for the 33-2055 digital meter?

home theater addict
saprano is online now  
Old 11-10-2014, 04:41 PM
AVS Addicted Member
 
MKtheater's Avatar
 
Join Date: Jul 2006
Location: New Hartford, NY
Posts: 14,782
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 376 Post(s)
Liked: 521
My digital meter was accurate without correction just using C-weighting.
MKtheater is offline  
 
Thread Tools


Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off