Fs:
This parameter is the free-air resonant frequency of a speaker. Simply stated, it is the point at which the weight of the moving parts of
the speaker becomes balanced with the force of the speaker suspension when in motion.
Understanding Thiele / Small Parameters:
Thiele / Small Parameters is used for box building programs that are available to the loudspeaker
inthusists. Any loudspeaker inthusist can purchase a box building program and have a box engineered specificly for the loudspeaker that they
posis. If you are a loudspeaker inthusist you will need the Thiele / Small Parameters to get the best performance out of your subwoofer / woofer.
Qes:
Qes is a measurement of the control coming from the speaker's electrical suspension system (the voice coil and magnet).
Qms:
Qms is a measurement of the control coming from the speaker's mechanical suspension system (the surround and spider).
Qts:
Qts is called the 'Total Q' of the driver at Fs. Qts is a measure of the driver's tendency to resonate at Fs, based on its overall characteristics.
Vas:
Equivalent air compliance. The volume of air that has the same compliance as the driver's suspension.
Re:
This is the DC resistance of the driver measured with an ohm meter.
Le:
This is the voice coil inductance measured in millihenries (mH).
Mmd:
Mass or weight of the speaker cone assembly (cone, coil and other moving parts).
Xmax:
Linear (one-way) travel of the cone. Xmax is used to determine the maximum linear SPL capability of the driver.
RMS:
This parameter represents the mechanical resistance of the driver's suspension losses.
Sd:
This is the actual surface area of the cone, normally given in square com.
SPL:
Sound Pressure Level, usually measured at 1 watt, at 1 meter in front of the loudspeaker.
no:
Free air reference efficiency. This is given as a percentage.
M.D.:
Mounting depth of the speaker.
C.H.:
Cut out hole of the speaker.
EBP:
The measurement is caluculated by dividing Fs by Qes. The EBP figure is used in many enclousre design formulas to determine if a speaker
is more suitable for a closed or vented design. An EBP close to 100 usually indicates a speaker that is best suited for a vented enclosure.
An EBP closer to 50 usually indicates a speaker best suited for a closed box design.
BL:
The magnetic strength of the motor structure.
THIELE / SMALL PARAMETERS
Allot of loudspeaker inthusists do not understand what Thiele / Small Parameters are. This section of the manual will help you understand what
Thiele / Small Parameter means.
�
10
SW10W
SW101W
SW12W
SW121W
SW10W
SW101W
SW12W
SW121W
Min. Sealed Cu. Ft.
0.5
0.75
0.75
1
Fs
29.092
35.365
33.246
34.953
Max Sealed Cu. Ft.
1
1.25
1.5
1.5
QES
0.442
0.552
0.682
0.627
QMS
2.812
5.503
6.6
6.41
Box Volume
1.25
1
1.5
1.5
QTS
0.382
0.51
0.618
0.571
Port Size
2
2"
3"
3"
Vas (Ltr)
64.23
25.22
94.54
56.47
sq. inch port size
3.14
3.14
7
7
Re (Ohm)
3.6
3.6 (x 2)
3.6
3.6 (x 2)
Port Length
9
9"
6.5"
6.5"
Tuning Frequency
28Hz
30Hz
40Hz
40Hz
MMD (mkg)
70
110
90
110
-3dB
37Hz
39Hz
52Hz
52Hz
Xmax
6mm +/-
6mm +/-
6mm +/-
6mm +/-
Port Displacement
0.001
0.0163
0.0263
0.0263
Rms
300
300
400
400
Sd (mM)
33.329
33.329
53.093
47.143
Box Volume
1.5
2
2.5
2.5
SPL (dB)
91
91
92
92
Port Size
3
4"
4"
4"
no
0.35%
0.55%
0.49%
0.37%
sq. inch port size
7
12.56
12.56
12.56
EBP
65.8
64
48.74
55.74
Port Length
11"
11.75"
8.75"
8.75"
BL
9.862
8.558
9.753
8.058
Tuning Frequency
35Hz
35Hz
35Hz
35Hz
-3dB
32Hz
29Hz
44Hz
44Hz
Sub. Displacement
0.09
0.085
0.11
0.11
Port Displacement
0.004
0.0854
0.0635
0.0635
Mounting Depth
157mm
157mm
169mm
169mm
Inches
6.18”
6.18”
6.65"
6.65"
Cut Out Hole
235mm
235mm
281mm
281mm
Inches
9.25"
9.25"
11.06"
11.06"
technical support for advised boxes when building an enclosure for compitition use.
NOTE:
The recommended enclosures listed are not for compitition use. Please call
Recommended Enclosures
Minimum Ported Enclosure
Recommended Ported Enclosure
Woofer Information
Parameters
Summary of Contents for SW101W
Page 1: ...Owner s Manual Please Read This Manual Before Operating Product...
Page 2: ......
Page 12: ...Parallel Dual 4 Ohm 0 5 Ohms 0 67 Ohms 1 Ohm 2 Ohm 11...
Page 13: ...Series Parrelel Dual 4 Ohm 2 Ohms 2 67 Ohms 4 Ohms 12...
Page 14: ...Series Dual 4 Ohm 32 Ohms 24 Ohms 16 Ohms 8 Ohms 13...
Page 15: ...14 Parallel Single 4 Ohm 4 ohm 2 ohm 1 33 ohm 1 ohm...
Page 16: ...15 Right Series Single 4 Ohm 4 ohm 8 ohm 12 ohm 16 ohm...
