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#149799 - 10/20/06 07:34 PM Re: Subwoofer calibration. [Re: jakeman]
SirQuack Offline
shareholder in the making

Registered: 01/29/04
Posts: 13571
Loc: Iowa
I don't believe my Denon 2805 allows you to adjust the main volume when running the receiver test tones. Maybe I'll have to dig out a calibration disk.
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#149800 - 10/20/06 08:02 PM Re: Subwoofer calibration. [Re: SirQuack]
RickF Offline
axiomite

Registered: 02/26/05
Posts: 5210
Loc: Vero Beach, Florida
After today I'll disregard the test tones from my H/K reciever.

This afternoon I moved stuff around and thought I'd do a quick calibration using the receiver's test tones and was perplexed as to why the sub's dB's were reading so high ... so I turned the volume level down on the sub to match the other speakers 75 db level and whenever I put in a movie to check things out (Master & Commander) I thought the bass sounded way low, I then re-calibrated using the Avia disc and saw that the sub was actually almost 10 db lower than the rest of the system. Played the scenes once again and things sounded much better.

Should have known better.
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#149801 - 10/20/06 08:11 PM Re: Subwoofer calibration. [Re: RickF]
Ken.C Offline
shareholder in the making

Registered: 05/03/03
Posts: 18044
Loc: NoVA
Hmm. I use another calibration disk that I can't remember right now (begins with a D or something) and I always calibrate the sub 10 dB higher than the mains.
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#149802 - 10/20/06 09:38 PM Re: Subwoofer calibration. [Re: Ken.C]
Wid Offline
axiomite

Registered: 06/22/03
Posts: 6789
Loc: The Peoples Republic of Il.
For my Ht system I calibrate my sub at 75db along with the rest of my system. Remember there is a compisation chart when using the RatShack meter. On my music system I go - 3db when using a 31.5HZ test tone from the Hsu disc that was supplied with my sub.
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Rick


"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud


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#149803 - 10/20/06 11:08 PM Re: Subwoofer calibration. [Re: Wid]
SirQuack Offline
shareholder in the making

Registered: 01/29/04
Posts: 13571
Loc: Iowa
Hey Wid, I'm not sure those alterations apply to the newer analog or digital meters, only the older analog?
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M80s-VP180-4xM22ow-4xM3ic-EP600-2xEP350
Anthem AVM60 Outlaw 7700 Emotiva A500 Epson 5040UB



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#149804 - 10/20/06 11:09 PM Re: Subwoofer calibration. [Re: SirQuack]
Wid Offline
axiomite

Registered: 06/22/03
Posts: 6789
Loc: The Peoples Republic of Il.

I haven't read anywhere that there is a difference. Have you ?
_________________________
Rick


"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud


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#149805 - 10/20/06 11:22 PM Re: Subwoofer calibration. [Re: Wid]
SirQuack Offline
shareholder in the making

Registered: 01/29/04
Posts: 13571
Loc: Iowa
It has been a while since I did some Google searching. But back some time ago I was searching for Radio Shack compensation adjustments or something like that and I thought I found where they are not all the same. I signed up on HomeTheaterShack.com some time ago as I've been experimenting with their free download Room EQ Wizzard, which is pretty cool if you have pc to do the measurements. The software has 3 different RS Correction values, depending on which meter your using. Even the older one appears to be different than the SVS website. hmm

Model 33-2050 Old Analog RS Meter Correction Values
10 -27.00
11 -24.15
12 -21.91
13 -20.13
14 -18.61
15 -17.33
16 -16.15
17 -14.92
18 -13.85
19 -13.01
20 -12.38
21 -11.66
22 -10.79
23 -10.00
24 -9.33
25 -8.80
26 -8.41
27 -7.99
28 -7.50
29 -6.99
30 -6.50
31 -6.03
32 -5.60
33 -5.23
34 -4.89
35 -4.58
36 -4.29
37 -4.04
38 -3.83
39 -3.64
40 -3.46
41 -3.31
42 -3.16
43 -3.01
44 -2.88
45 -2.74
46 -2.60
47 -2.46
48 -2.35
49 -2.26
50 -2.21
51 -2.18
52 -2.15
53 -2.11
54 -2.04
55 -1.98
56 -1.95
57 -1.92
58 -1.88
59 -1.84
60 -1.80
61 -1.77
62 -1.73
63 -1.71
64 -1.71
65 -1.72
66 -1.70
67 -1.67
68 -1.64
69 -1.60
70 -1.56
71 -1.52
72 -1.47
73 -1.41
74 -1.34
75 -1.26
76 -1.19
77 -1.12
78 -1.07
79 -1.02
80 -0.98
81 -0.94
82 -0.89
83 -0.85
84 -0.80
85 -0.75
86 -0.71
87 -0.66
88 -0.62
89 -0.59
90 -0.55
91 -0.52
92 -0.50
93 -0.47
94 -0.43
95 -0.40
96 -0.36
97 -0.34
98 -0.32
99 -0.30
100 -0.27
101 -0.25
102 -0.23
103 -0.20
104 -0.17
105 -0.14
106 -0.11
107 -0.07
108 -0.03

Model 33-4050 Analog RS Meter Correction Values
10 -7.29
11 -6.85
12 -6.35
13 -5.7
14 -5.1
15 -4.6
16 -4.3
17 -4
18 -3.7
19 -3.55
20 -3.25
21 -3.15
22 -3
23 -2.9
24 -2.8
25 -2.65
26 -2.58
27 -2.45
28 -2.25
29 -2.09
30 -2.01
31 -1.91
32 -1.8
33 -1.71
34 -1.55
35 -1.4
36 -1.27
37 -1.15
38 -1.07
39 -1
40 -0.98
41 -0.93
42 -0.86
43 -0.75
44 -0.69
45 -0.63
46 -0.59
47 -0.55
48 -0.5
49 -0.49
50 -0.46
51 -0.46
52 -0.45
53 -0.46
54 -0.47
55 -0.47
56 -0.48
57 -0.49
58 -0.5
59 -0.51
60 -0.53
61 -0.55
62 -0.57
63 -0.59
64 -0.61
65 -0.63
66 -0.65
67 -0.67
68 -0.68
69 -0.72
70 -0.75
71 -0.77
72 -0.79
73 -0.79
74 -0.8
75 -0.82
76 -0.83
77 -0.84
78 -0.86
79 -0.85
80 -0.86
81 -0.87
82 -0.88
83 -0.91
84 -0.94
85 -0.94
86 -0.93
87 -0.92
88 -0.92
89 -0.91
90 -0.9
91 -0.89
92 -0.88
93 -0.87
94 -0.86
95 -0.85
96 -0.84
97 -0.83
98 -0.83
99 -0.82
100 -0.82
101 -0.81
102 -0.8
103 -0.78
104 -0.76
105 -0.73
_________________________
M80s-VP180-4xM22ow-4xM3ic-EP600-2xEP350
Anthem AVM60 Outlaw 7700 Emotiva A500 Epson 5040UB



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#149806 - 10/20/06 11:28 PM Re: Subwoofer calibration. [Re: SirQuack]
Wid Offline
axiomite

Registered: 06/22/03
Posts: 6789
Loc: The Peoples Republic of Il.

In the instructions I got with my Hsu sub it says to add 3 db @ 31.5HZ. This is the same as what the SVS website says. I think I'll stick with what these two companies, who should know a thing or two about bass, has to say.
_________________________
Rick


"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud


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