SPECIFICATIONS Nominal diameter . . . . . . . . .... mm (in)

SPECIFICATIONS Nominal diameter . . . . . . . . .... mm (in)
WOOFER B1
10B1 / 10B1PE**
Woofer bass guitar, 10" designed to attend the need for all
manufacturers of amplifiers and musicians. And to became evident
the speaker performance in the high-end sound, is Selenium puts
all his knowledge allied the best materials and process, to provide
a quality product and reliability.
The cone light, made from long fibre, provides for all mobile
great stability, high efficiency and low distortion.
The voice coil is made with wire resistant to high
temperatures and has a body of Kapton®.
The basket made of reinforced steeel sheet and epoxi paint,
gives to the woofer vast structure and mechanical strength.
The dust cap of fabric ensures a perfect dissipation of heat
from voice coil.
The use of high-strength adhesive provide optimum sizing
and durability.
** 10B1PE - Product with black basket .
SPECIFICATIONS
Nominal diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254 (10)
Nominal impedance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Minimum impedance @ 236 Hz. . . . . . . . . . . . . . . . . . . . . . . 6,2
Power handling
Musical program1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
AES2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Sensitivity (2.83V@1m) averaged from 300 to 3,000 Hz . . . 95
Power compression @ 0 dB (nom. power) . . . . . . . . . . . . . . 2.7
Power compression @ -3 dB (nom. power)/2. . . . . . . . . . . . 1.7
Power compression @ -10 dB (nom. power)/10. . . . . . . . . . 0.5
Frequency response @ -10 dB . . . . . . . . . . . . . . . . 70 to 6,000
mm (in)
W
W
W
W
dB SPL
dB
dB
dB
Hz
1
Power 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.
2
AES Standard (60 - 600 Hz).
%
m2 (in2)
cm3 (in3)
mm (in)
mm (in)
Atmospheric conditions at TS parameter measurements:
Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 (75)
Atmospheric pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1,002
Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
°C (°F)
mb
%
Hz
l(ft3)
Thiele-Small parameters are measured after a 2-hour power test using half AES power .
A variation of ± 15% is allowed.
NON-LINEAR PARAMETERS
Le @ Fs (voice coil inductance @ Fs) . . . . . . . . . . . . . . . 1.353
Le @ 1 kHz (voice coil inductance @ 1 kHz) . . . . . . . . . . . 0.74
Le @ 20 kHz (voice coil inductance @ 20 kHz) . . . . . . . . 0.346
Red @ Fs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.19
Red @ 1 kHz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.67
Red @ 20 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18,90
Krm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4
Kxm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.8
Erm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.81
Exm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.76
Tm
T
mm (in)
m (ft)
1/°C
°C (°F)
°C/W(°F/W)
mm (in)
mm (in)
W
g (lb)
mm/N
kg/s
Carton dimensions (W x D x H) . . . . . . 26 x 26 x 14 (15.0 x 15.0 x 6.1)
cm (in)
MOUNTING INFORMATION
Number of bolt-holes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Bolt-hole dimension. . . . . . . . . . . . . . . . . . . . 5.5 x 8 (0.22 x 0.31) mm (in)
Bolt-circle diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . 243 (14.48) mm (in)
Baffle cutout diameter (front mount) . . . . . . . . . . . . . 231 (13.86) mm (in)
Baffle cutout diameter (rear mount) . . . . . . . . . . . . . . 225 (13.70) mm (in)
Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Soldier
Polarity . . . . . . . . . . . . . . . . . . . . . . . . . . Positive voltage applied to the positive
(+) terminal gives forward cone motion
Minimum clearance between the back of the magnetic assembly and the
enclosure wall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 (3) mm (in)
ø 255
mH
mH
mH
W
W
W
mW
mH
106
8xø 55x8.0
ø 228
ADDITIONAL PARAMETERS
bL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.1
Flux density . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.08
Voice coil diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 (1.8)
Voice coil winding length . . . . . . . . . . . . . . . . . . . . . . . . 9 (29.5)
Wire temperature coefficient of resistance (a25) . . . . . 0.00344
Maximum voice coil operation temperature. . . . . . . . 275 (527)
qvc (max.voice coil operation temp./max.power) . . 2,56 (5,27)
Hvc (voice coil winding depth) . . . . . . . . . . . . . . . . . 12.0 (0,49)
Hag (air gap height). . . . . . . . . . . . . . . . . . . . . . . . . . . 8.0 (0.32)
Re . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5,74
Mms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29.7 (0.065)
Cms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
Rms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.022
ADDITIONAL INFORMATION
Magnet material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Barium ferrite
Magnet weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 920 (32.45) g (oz)
Magnet diameter x depth . . . . . . . . . . . . . . 134 x 18 (5.27 x 0.71) mm (in)
Magnetic assembly weight . . . . . . . . . . . . . . . . . . . . 2,600 (5.73) g (lb)
Frame material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Steel
Frame finish . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Black and orange epoxy
Voice coil material. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Copper
Voice coil former material . . . . . . . . . . . . . . . . . . . . . . . . . . . Polyimide (Kapton®)
Cone material. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Long fiber pulp
Volume displaced by woofer . . . . . . . . . . . . . . . . . . . . . 1.5 (0.05) l (ft3)
Net weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3,200 (7.05) g (lb)
Gross weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3,700 (8.16) g (lb)
ø 243
ø 134
THIELE-SMALL PARAMETERS
Fs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Vas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29,0 (1.02)
Qts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.88
Qes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.95
Qms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.29
ho (half space) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.51
Sd. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.035 (130.2)
Vd (Sd x Xmax) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.0 (0.43)
Xmax (max. excursion (peak) with 10% distortion) . . . 2.0 (0.07)
Xlim (max.excursion (peak) before physical damage). 9.0 (0.35)
27
69
10
Dimensions in mm.
WOOFER G1
10B1
RESPONSE CURVES (0° AND 45°) IN A TEST ENCLOSURE INSIDE AN
ANECHOIC CHAMBER,1 W / 1m
POLAR RESPONSE CURVES
50 Hz
0
110
45
30°
100
100 Hz
330°
-10
60°
105
0
-6
300°
-20
dB
90°
30°
0
-6
250 Hz
330°
-10
60°
270° 90°
330°
-10
60°
300°
-20
dB
0
-6
30°
300°
-20
dB
270° 90°
270°
95
240°
dB - [V] (rms)
120°
90
150°
180°
240°
120°
210°
150°
330°
30°
180°
240°
120°
210°
150°
330°
30°
180°
210°
85
500 Hz
80
30°
75
0
-6
800 Hz
-10
60°
70
300°
-20
dB
90°
0
-6
1,25 kHz
-10
60°
-20
dB
270° 90°
330°
-10
60°
300°
0
-6
300°
-20
dB
270° 90°
270°
65
240°
120°
60
20
50
100
200
500
1k
2k
5k
10k
20k
150°
Frequency [Hz]
IMPEDANCE AND PHASE CURVES MEASURED IN FREE-AIR
70
150°
330°
30°
2 kHz
30°
Impedance
180°
300°
-20
dB
90°
50
60
240°
25
150°
180°
210°
0
-6
150°
30°
300°
-20
dB
240°
180°
0
-6
330°
-10
60°
300°
-20
dB
270° 90°
120°
150°
180°
210°
4 kHz
330°
-10
60°
270° 90°
120°
50
180°
240°
120°
210°
3,15 kHz
-10
60°
Phase
0
-6
240°
120°
210°
270°
240°
120°
210°
150°
180°
210°
Polar Response Curve.
0
30
-25
20
10
-50
[deg]
[Ohm]
40
HOW TO CHOOSE THE RIGHT AMPLIFIER
The power amplifier must be able to supply twice the RMS driver power. This
3 dB headroom is necessary to handle the peaks that are common to
musical programs. When the amplifier clips those peaks, high distortion
arises and this may damage the transducer due to excessive heat. The use
of compressors is a good practice to reduce music dynamics to safe levels.
0
20
50
100
200
500
1k
2k
5k
10k
20k
Frequency [Hz]
HARMONIC DISTORTION CURVES MEASURED AT 10% AES INPUT
POWER, 1 m
2nd Harmonic
Fundamental
140
3rd Harmonic
FINDING VOICE COIL TEMPERATURE
It is very important to avoid maximum voice coil temperature. Since moving
coil resistance (RE) varies with temperature according to a well known law,
we can calculate the temperature inside the voice coil by measuring the
voice coil DC resistance:
æR
öæ
1
TB = TA + çç B - 1÷÷ çç TA - 25 +
a 25
è RA
øè
ö
÷÷
ø
TA , TB= voice coil temperatures in °C.
RA , RB= voice coil resistances at temperatures TA and TB, respectively.
a25= voice coil wire temperature coefficient at 25 °C.
130
120
POWER COMPRESSION
Voice coil resistance rises with temperature, which leads to efficiency
reduction. Therefore, if after doubling the applied electric power to the driver
we get a 2 dB rise in SPL instead of the expected 3 dB, we can say that
power compression equals 1 dB. An efficient cooling system to dissipate
voice coil heat is very important to reduce power compression.
dB/SPL
110
100
90
NON-LINEAR VOICE COIL PARAMETERS
Due to its close coupling with the magnetic assembly, the voice coil in
electrodynamic loudspeakers is a very non-linear circuit. Using the nonlinear modeling parameters Krm, Kxm, Erm and Exm from an empirical
model, we can calculate voice coil impedance with good accuracy.
80
70
60
50
100
200
500
1k
2k
Frequency [Hz]
5k
10k
SUGGESTED PROJECTS
Auditorium Kit
Electoral Kit
For additional project suggestions, please access our website.
TEST ENCLOSURE
100-liter volume with a duct ø 3” by 4.3” in length.
®
Kapton : Du Pont trademark.
www.selenium.com.br
Specifications subject to change without prior
notice.
Cod.: NA
Rev.: 01 - 03/ 09
www.seleniumloudspeakers.com
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