MS SERIES
dual voice-coil subwoofer
MS-10SD2
MS-10SD4
MS-12SD2
MS-12SD4
MS-15SD2
OWNER’S MANUAL
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2. You must use both coils of a dual voice-coil woofer connected
either in series or in parallel.
SUGGESTED ENCLOSURES
MoDELS SEaLED BoX
VEnTED BoX
3. Most amplifiers deliver exactly the same amount of power bridged
into a 4-ohm load as they do running a 2-ohm stereo load.
Internal Volume
Internal Volume Qty.
Duct(s) Diameter x Length
MS-10SD2 0.78 ft3 (22L)
1.13 ft3 (32L)
1
2.95 in x 9.84 in (7.5cm x 25cm)
To design a subwoofer system that maximizes available amplifier power,
keep the following rules in mind:
MS-10SD4 0.78 ft3 (22L)
MS-12SD2 0.95 ft3 (27L)
MS-12SD4 0.95 ft3 (27L)
1.13 ft3 (32L)
1.7 ft3 (48L)
1.7 ft3 (48L)
1
1
1
2.95 in x 9.84 in (7.5cm x 25cm)
3.94 in x 8.66 in (10cm x 22cm)
3.94 in x 8.66 in (10cm x 22cm)
1. The total system impedance of woofers in parallel can be calculated
using this formula:
MS-15SD2 1.27 ft3 (36L)
2.12 ft3 (60L)
2
3.94 in x 14.96 in (10cm x 38cm)
1
1
w2
Impedance =
– The suggested enclosure volumes are related to only one speaker, including woofer and duct(s)
displaced volume.
– For enclosures with more than one speaker, it is necessary to multiply the suggested volume and
duct(s) by the quantity of speakers.
1
w1
1
w3
...
+
+
where w is the nominal impedance of the woofer.
2. The total system impedance of voice coils (or woofers) in series can
be calculated using this formula:
ENCLOSURES INTERNAL VOLUME
CALCULATION INSTRUCTIONS
Impedance = w1 + w2 + w3 ...
rECTanguLar BoX
A x B x C
TraPEZoiD rECTanguLar BoX
The diagrams below show parallel and series speaker connections.
C + D
2
1000
Internal Volume =
(
)
Figure 1. Parallel connection
Figure 2. Series connection
A x B x
1000
Internal Volume =
– A, B and C are internal dimensions.
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rESPonSE CurVES (0º anD 45º) in a TEST EnCLoSurE
inSiDE an anEChoiC ChaMBEr, 1w/1M
harMoniC DiSTorTion CurVES MEaSurED aT 10%
noMinaL PowEr inPuT
MS-10SD2
MS-10SD4
MS-12SD2
4
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iMPEDanCE anD PhaSE CurVES MEaSurED
in FrEE air
SoFTwarE SiMuLaTED rESPonSE CurVE
MS-10SD2
MS-10SD4
MS-12SD2
5
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rESPonSE CurVES (0º anD 45º) in a TEST EnCLoSurE
inSiDE an anEChoiC ChaMBEr, 1w/1M
harMoniC DiSTorTion CurVES MEaSurED aT 10%
noMinaL PowEr inPuT
MS-12SD4
MS-15SD2
6
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iMPEDanCE anD PhaSE CurVES MEaSurED
in FrEE air
SoFTwarE SiMuLaTED rESPonSE CurVE
MS-12SD4
MS-15SD2
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SPECiFiCaTionS
Nominal diameter:
MS-10SD2
10 in (254mm)
2+2 ohms
MS-10SD4
10 in (254mm)
4+4 ohms
MS-12SD2
12 in (305mm)
2+2 ohms
MS-12SD4
12 in (305mm)
4+4 ohms
MS-15SD2
15 in (381mm)
2+2 ohms
Nominal impedance:
Minimum impedance @ 105Hz:
4.5 ohms
9 ohms
4.4 ohms
8.7 ohms
4.2 ohms
Power handling
Peak:
1,200W
600W
300W
250W
1,200W
600W
300W
250W
1,800W
900W
450W
350W
1,800W
900W
450W
350W
1,800W
900W
450W
350W
Continuous music1:
NBR2:
AES3:
Sensitivity (1W @ 1m):
87dB SPL
3.8dB
87dB SPL
3.8dB
87dB SPL
4.5dB
87dB SPL
5.0dB
87dB SPL
3.6dB
Power compression @ 0dB (nom. power):
Power compression @ –3dB (nom. power)/2:
Power compression @ –10dB (nom. power)/10:
Frequency response @ –10dB:
2.8dB
2.8dB
2.5dB
3.3dB
2.3dB
2.7dB
2.7dB
0.5dB
1.8dB
1.0dB
40Hz – 400Hz
40Hz – 400Hz
30Hz – 400Hz
30Hz – 400Hz
30Hz – 1kHz
ThiELE-SMaLL ParaMETErS
Fs:
34Hz
1.30 ft3 (37L)
0.39
34Hz
1.38 ft3 (39L)
0.48
35Hz
1.73 ft3 (49L)
0.73
37Hz
1.66 ft3 (47L)
0.86
29Hz
4.58 ft3 (130L)
0.82
Vas:
Qts:
Qes:
0.40
0.49
0.78
0.93
0.87
Qms:
16.49
18.56
10.08
10.45
13.25
Ho (half space):
Sd:
0.35%
0.30%
0.27%
0.27%
0.36%
51.16 in2 (0.03301m2) 51.16 in2 (0.03301m2) 78.59 in2 (0.0507m2) 78.59 in2 (0.0507m2) 128.52 in2 (0.083m2)
Vd (Sd x Xmax):
12.08 in3 (198cm3)
12.08 in3 (198cm3)
20.08 in3 (329cm3)
0.25 in (6.5mm)
1.15 in (29.3mm)
21.6 in3 (354cm3)
32.88 in3 (539cm3)
0.25 in (6.5mm)
1.15 in (29.3mm)
X
max (max. excursion (peak) with 10% distortion):
0.23 in (6mm)
0.23 in (6mm)
0.27 in (7mm)
Xlim (max. excursion (peak) before physical damage):
0.77 in (19.5mm)
0.77 in (19.5mm)
1.15 in (29.3mm)
Atmospheric conditions at TS parameter measurements
Temperature:
Atmospheric pressure:
Humidity:
77ºF (25ºC)
1.047mb
51%
77ºF (25ºC)
1.047mb
51%
77ºF (25ºC)
1.047mb
51%
77ºF (25ºC)
1.047mb
51%
77ºF (25ºC)
1.047mb
51%
–
1Power handling specifications refer to normal speech and/or music program material, reproduced by an amplifier producing no more than 5% distortion.
Power is calculated as true RMS voltage squared divided by the nominal impedance of the loudspeaker.
2NBR Standard (10,303 Brazilian Standard).
–
–
3AES Standard (60Hz – 600Hz).
– Thiele-Small parameters are measured after a two-hour power test using half AES power. A variation of ±17% is allowed.
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aDDiTionaL ParaMETErS
ßL:
MS-10SD2
13.3Tm
MS-10SD4
16.6Tm
MS-12SD2
12.6Tm
MS-12SD4
16.3Tm
MS-15SD2
13.2Tm
Flux density:
0.8T
0.9T
0.6T
0.7T
0.6T
Voice-coil diameter:
1.92 in (49mm)
101.7 ft (31m)
0.00358 1/ºC
534.2ºF (279ºC)
1.92 in (49mm)
101.7 ft (31m)
0.00372 1/ºC
534.2ºF (279ºC)
2.51 in (64mm)
104.22 ft (31.8m)
0.00388 1/ºC
458.6ºF (237ºC)
2.51 in (64mm)
129.6 ft (39.5m)
0.00344 1/ºC
564.8ºF (296ºC)
2.51 in (64mm)
104.22 ft (31.8m)
0.00388 1/ºC
465.8ºF (241ºC)
Voice-coil winding length:
Wire temperature coefficient of resistance (∂25):
Maximum voice-coil operation temperature:
Өvc (max. voice-coil operation temp./max. power):
2.15ºF/W (–16.6ºC/W) 2.15ºF/W (–16.6ºC/W) 1.31ºF/W (–17.1ºC/W) 1.61ºF/W (–16.9ºC/W) 1.31ºF/W (–17.1ºC/W)
Hvc (voice-coil winding depth):
0.79 in (20mm)
0.31 in (8mm)
3.7 ohms
0.79 in (20mm)
0.31 in (8mm)
7.4 ohms
0.83 in (21mm)
0.31 in (8mm)
3.7 ohms
0.87 in (22mm)
0.31 in (8mm)
7.7 ohms
0.82 in (21mm)
0.31 in (8mm)
3.7 ohms
Hag (air gap height):
Re:
Mms:
Cms:
Rms:
0.2 lb (91.6g)
240µm/N
0.19 lb (85.8g)
250µm/N
0.33 lb (149g)
130µm/N
0.3 lb (136.4g)
130µm/N
0.47 lb (223.1g)
130µm/N
1.2kg/s
1kg/s
3.3kg/s
3.1kg/s
3.1kg/s
non-LinEar ParaMETErS
Le @ Fs (voice-coil inductance @ Fs):
5.297mH
2.4352mH
1.2227mH
0.34 ohms
6.96 ohms
100.11 ohm
2.9 mohm
18.2mH
11.644mH
3.6917mH
1.3332mH
0.91 ohms
11.12 ohms
102.04 ohm
17.2 mohm
72.2mH
6.193mH
3.076mH
1.639mH
0.26 ohms
8.75 ohms
203.32 ohm
0.9 mohm
19.3mH
9.692mH
5.2016mH
2.944mH
6.594mH
3.2527mH
1.7867mH
0.23 ohms
8.91 ohms
200.89 ohm
1 mohm
Le @ 1kHz (voice-coil inductance @ 1kHz):
Le @ 20kHz (voice-coil inductance @ 20kHz):
Red @ Fs:
Red @ 1kHz:
Red @ 20kHz:
Krm:
0.43 ohms
15.18 ohms
397.46 ohm
1.1 mohm
27.4mH
Kxm:
18.7mH
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aDDiTionaL inForMaTion
Magnet material:
MS-10SD2
Barium ferrite
2.73 lb (1.24kg)
MS-10SD4
Barium ferrite
2.73 lb (1.24kg)
MS-12SD2
Barium ferrite
3.525 lb (1.6kg)
MS-12SD4
Barium ferrite
3.525 lb (1.6kg)
MS-15SD2
Barium ferrite
3.525 lb (1.6kg)
Magnet weight:
Magnet diameter x depth:
5.79 in x 0.71 in
5.79 in x 0.71 in
6.65 in x 0.74 in
6.65 in x 0.74 in
6.65 in x 0.74 in
(147mm x 18mm)
(147mm x 18mm)
(169mm x 19mm)
(169mm x 19mm)
(169mm x 19mm)
Magnetic assembly weight:
Frame material:
7.32 lb (3.32kg)
Aluminum
7.32 lb (3.32kg)
Aluminum
9.04 lb (4.1kg)
Aluminum
9.04 lb (4.1kg)
Aluminum
9.04 lb (4.1kg)
Aluminum
Frame finish:
Black epoxy
Black epoxy
Black epoxy
Black epoxy
Black epoxy
Voice-coil material:
Voice-coil former material:
Cone material:
Copper
Kapton®
Copper
Copper
Copper
Copper
Kapton
Fiberglass
Fiberglass
Fiberglass
Polypropylene
0.07 ft3 (2.2L)
8.95 lb (4.06kg)
10.32 lb (4.68kg)
13.2 in x 11.4 in x 6.9 in
Polypropylene
0.07 ft3 (2.2L)
8.95 lb (4.06kg)
10.32 lb (4.68kg)
13.2 in x 11.4 in x 6.9 in
Polypropylene
0.13 ft3 (3.78L)
11.9 lb (5.44kg)
13.84 lb (6.28kg)
15.3 in x 13.6 in x 7.9 in
Polypropylene
0.13 ft3 (3.78L)
11.9 lb (5.44kg)
13.84 lb (6.28kg)
15.3 in x 13.6 in x 7.9 in
Polypropylene
0.18 ft3 (5.1L)
13 lb (5.96kg)
15.63 lb (7.1kg)
18.1 in x 16.3 in x 8.9 in
Volume displaced by woofer:
Net weight:
Gross weight:
Carton dimensions (W x D x H):
(335mm x 290mm x 175mm) (335mm x 290mm x 175mm) (390mm x 345mm x 200mm) (390mm x 345mm x 200mm) (460mm x 415mm x 225mm)
MounTing inForMaTion
Number of bolt-holes:
8
8
8
8
8
Bolt-hole diameter:
0.25 in x 0.31 in
(6.5mm x 8mm)
0.25 in x 0.31 in
(6.5mm x 8mm)
0.25 in x 0.31 in
(6.5mm x 8mm)
0.25 in x 0.31 in
(6.5mm x 8mm)
0.25 in x 0.31 in
(6.5mm x 8mm)
Bolt-circle diameter:
9.57 in (243mm)
9.05 in (230mm)
8.97 in (228mm)
9.57 in (243mm)
9.05 in (230mm)
8.97 in (228mm)
11.5 in (292mm)
11 in (280mm)
10.9 in (277mm)
11.5 in (292mm)
11 in (280mm)
10.9 in (277mm)
14.4 in (367mm)
13.8 in (353mm)
13.7 in (350mm)
Baffle cutout diameter (front mount):
Baffle cutout diameter (rear mount):
Connectors:
Silver-plated push terminals Silver-plated push terminals Silver-plated push terminals Silver-plated push terminals Silver-plated push terminals
Polarity:
Positive voltage applied to
the positive terminal (red)
Positive voltage applied to
the positive terminal (red)
Positive voltage applied to
the positive terminal (red)
Positive voltage applied to
the positive terminal (red)
Positive voltage applied to
the positive terminal (red)
gives forward cone motion. gives forward cone motion. gives forward cone motion. gives forward cone motion. gives forward cone motion.
Minimum clearance between the back
of the magnetic assembly and the
enclosure wall:
3 in (75mm) 3 in (75mm) 3 in (75mm) 3 in (75mm) 3 in (75mm)
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DIMENSIONS
MS-10SD2, MS-10SD4
MS-12SD2, MS-12SD4
MS-15SD2
Ø10.74"
(Ø273mm)
Ø12.8"
(Ø326mm)
Ø15.8"
(Ø403mm)
0.25" x 8 (8x)
(6.5mm x 8 (8x))
0.25" x 8 (8x)
(6.5mm x 8 (8x))
0.25" x 8 (8x)
(6.5mm x 8 (8x))
Ø9.56"
(Ø243mm)
Ø11.5"
(Ø292mm)
Ø14.4"
(Ø367mm)
5.7"
(145mm)
6.73"
(171mm)
7.71"
(196mm)
6.25"
(159mm) (228mm)
8.97"
7.2"
10.9"
7.2"
13.7"
(183mm) (277mm)
(183mm) (350mm)
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HARMAN Consumer, Inc.
8500 Balboa Boulevard, Northridge, CA 91329 USA
© 2011 HARMAN International Industries, Incorporated. All rights reserved.
JBL is a trademark of HARMAN International Industries, Incorporated, registered
in the United States and/or other countries. Kapton is a registered trademark of
E.I. du Pont de Nemours and Company. Features, specifications and appearance
are subject to change without notice.
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