BASSTRAP CONSTRUCTION CHART
Adapted from Jeff Cooper's
Building a Recording Studio
(ISBN: 0-916899-00-4)
| Thickness: |
|
|
|
1/8" |
1/4" |
1/2" |
3/4" |
| Density: |
|
|
|
0.344 |
0.688 |
1.375 |
2.063 |
|
|
|
|
|
|
|
|
| Lumber |
Class |
Depth |
|
|
Freq. |
(Hz) |
|
| 1x |
A |
0.75 |
|
334.81 |
236.75 |
167.40 |
136.69 |
| 1x + 1x |
AA |
1.5 |
|
236.75 |
167.40 |
118.37 |
96.65 |
| 2x |
B |
1.5 |
|
236.75 |
167.40 |
118.37 |
96.65 |
| 1x +2x |
AB |
2.25 |
|
193.30 |
136.69 |
96.65 |
78.92 |
| 3x |
C |
2.5 |
|
183.38 |
129.67 |
91.69 |
74.87 |
| 2x + 2x |
BB |
3 |
|
167.40 |
118.37 |
83.70 |
68.34 |
| 1x +3x |
AC |
3.25 |
|
160.84 |
113.73 |
80.42 |
65.66 |
| 4x |
D |
3.5 |
|
154.99 |
109.59 |
77.49 |
63.27 |
| 2x + 3x |
BC |
4 |
|
144.98 |
102.51 |
72.49 |
59.19 |
| 1x + 4x |
AD |
4.25 |
|
140.65 |
99.45 |
70.32 |
57.42 |
| 2x + 4x |
BD |
5 |
|
129.67 |
91.69 |
64.84 |
52.94 |
| 3x + 3x |
CC |
5 |
|
129.67 |
91.69 |
64.84 |
52.94 |
| 6x |
E |
5.5 |
|
123.64 |
87.42 |
61.82 |
50.47 |
| 3x + 4x |
CD |
6 |
|
118.37 |
83.70 |
59.19 |
48.33 |
| 1x + 6x |
AE |
6.25 |
|
115.98 |
82.01 |
57.99 |
47.35 |
| 2x + 6x |
BE |
7 |
|
109.59 |
77.49 |
54.80 |
44.74 |
| 4x + 4x |
DD |
7 |
|
109.59 |
77.49 |
54.80 |
44.74 |
| 3x + 6x |
CE |
8 |
|
102.51 |
72.49 |
51.26 |
41.85 |
| 4x + 6x |
DE |
9 |
|
96.65 |
68.34 |
48.33 |
39.46 |
| 6x + 6x |
EE |
11 |
|
87.42 |
61.82 |
43.71 |
35.69 |
|
|
|
|
|
|
|
|
|
|
|
|
Pitches: |
|
|
|
|
|
|
|
32.703 |
46.249 |
65.406 |
92.498 |
|
|
|
|
C1 |
F#1 |
C2 |
F#2 |
|
|
|
|
130.81 |
185 |
261.62 |
369.99 |
|
|
|
|
C3 |
F#3 |
C4 |
F#4 |
Copyright © 2004, Stephen B. Ward.
http://www.stephenbward.com/technology/splash/basstrap.htm Revised 20040313.