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Nakamichi SP-80

  • Price $80.00
0 Questions
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Description

Couple of old school drivers. These are more of midbass than subwoofer. Both in perfect working order.

 

Nakamichi SP-80

fs = 40Hz
Qt = .255
Qes = .268
Qms = 5.29
Vas = 1.08 cu. ft. = 1866 cu in. = 30.58 liters
Xmax = .28 in = 7.0 mm
Vd = 0.00385 cu ft. = 6.65 cu in. = .11 liters
Speaker Displacement = .046 cu ft. = 80 cu in. = 1.31 liters
Re = 4.5Ohms
No = .9%
Par (Vented) = 3.0 x (Vd)^2 x (f3)^4 = 3.63e-8 x (f3)^4

 
Ported Enclosure

Box Volume
(cu. ft.)

f3 (Hz)

fb (Hz)

ripple (dB)
Par (W)
2 Inch
P.V.
(cu in)

2.5 Inch

P.V.
(cu in)
3.0 Inch
P.V.
(cu in)
0.20
95.30
73.80
1.20
2.99
8.82
28
14.23
70
20.94
148
0.30
76.20
63.00
-0.10
1.22
7.00
22
11.4
56
16.85
119
0.40
65.70
56.70
-1.00
0.68
6.00
19
9.83
48
14.60
103
0.50
58.80
52.50
-1.60
0.43
5.31
17
8.75
43
13.04
92
0.60
53.80
49.30
-2.20
0.30
4.82
15
7.99
39
11.94
84
0.70
50.00
46.80
-2.60
0.23
4.44
14
7.39
36
11.08
78
0.80
47.00
44.80
-3.00
0.18
4.12
13
6.89
34
10.36
73
0.90
44.40
43.10
-3.30
0.14
3.86
12
6.48
32
9.77
69
1.00
42.30
41.60
-3.60
0.12
3.65
11
6.15
30
9.30
66
1.10
40.50
41.00
-3.80
0.10
3.44
11
5.83
29
8.83
62
1.20
38.90
39.20
-4.10
0.08
3.29
10
5.60
27
8.50
6020181107_164035_zpsg4cjsub0.jpg20181107_164242_zps3unzk0m3.jpg20181107_164306_zpscdblhrod.jpg


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