Transcript
12"- 500W
Bass Guitar Loudspeaker 12 BS 2,5 PL - 8 Ω Code Z007831
GENERAL CHARACTERISTICS Nominal Overall Diameter ................. 320 mm Nominal Voice Coil Diameter .............. 65 mm Magnet Weight ............................... 220 g Flux Density................................... 1.14 T Weight ......................................... 2.50 Kg
Ω Hz
Ω W W dB
n° 8 holes 6x9 on Ø301
Ø320.0
Ø282.0
g µm/N Wb/m lt. mm % cm2 Ω mH 8.5
4.0
CONSTRUCTIVE CHARACTERISTICS Magnet................................. Neodymium Voice Coil Winding................... Copper Voice Coil Former.................... Kapton Cone ................................... Paper Surround............................... Treated Cloth Dust Dome ............................ Solid Paper Basket ................................. Aluminium Die-Cast
40.0
123.0
83.0
THIELE-SMALL PARAMETERS Voice Coil DC Resistance ........... RE 5.46 Resonance Frequency ............... fs 46.8 Mechanical Q Factor................. QMS 12.58 Electrical Q Factor................... QES 0.44 Total Q Factor........................ QTS 0.43 Mechanical Moving Mass ............ MMS 56.7 Mechanical Compliance ............. CMS 200 Force Factor .......................... B×l 14.37 Equivalent Acoustic Volume........ VAS 81.3 Maximum Linear Displacement .... XMAX +/-5.0 1.81 Reference Efficiency ................ η0 Diaphragm Area ...................... SD 530.9 Losses Electrical Resistance........ RES 155.6 Voice Coil Inductance @ 1kHz ..... LE 1.00
ELECTRICAL CHARACTERISTICS Nominal Impedance........................... 8 Musical Power ................................. 500 Rated Power* .................................. 250 Sensitivity @ 1 W, 1 m ....................... 96.4
98.0
*rated power measured with 2 hours test with pink noise signal, 6 dB crest factor, loudspeaker mounted on enclosure Thiele-Small parameters measured with LASER system
Frequency Response on IEC Baffle (DIN 45575) @ 1 W, 1 m - Impedance +110
500
+105 200
+100
+95
d
100
+90 50
B S
+85
Ω
P L
+80
20
+75 10 +70 5 +65 3 +60 20
50
100
200
500
Hz
1k
2k
5k
10k
Due to continuing product improvement, the features and the design are subject to change without notice. SICA Altoparlanti s.r.l. - ITALY – website: www.sica.it - E-mail:
[email protected] - Tel. +39-071-7958072 - Fax +39-071-7959006
20k
24/11/06
12 B 2,5 PL
GRAPHICS AND MEASUREMENTS
12” speaker – 2,5”voice coil
Force factor Bl (X) Bl [N/A] -Xprot < X < Xprot
Xp- < X < Xp+
Bl (-X)
17.5
+110
KLIPPEL
KLIPPEL
+105
15.0
+100 12.5
+95 d B
10.0
+90 +85
S P L
7.5
+80 +75
5.0
+70 2.5
+65 +60 20
0.0 -5.0
<< Coil in
-2.5
X [mm]
0.0
2.5
5.0
7.5
coil out >>
50
500
2k
1k
5k
10k
20k
Frequency Response: enclosure volume 45l, port tuning 58Hz (thick curve on axis, thin curve 30° off axis)
Electrical inductance Le (X)
Increase of voice coil temperature Delta Tv(t) and electrical input power(t)
Le [mH] -Xprot < X < Xprot
200
Hz
Bl(X): force factor variation with voice coil displacement
1.0
100
Nominal Power
Xp- < X < Xp+
Voice coil temperature
KLIPPEL
350
KLIPPEL
0.9
500
300
Nominal Power [W]
0.8 0.7 0.6 0.5 0.4 0.3
400
250 200
300
150 200 100 100
50
0.2
0
0.1
0 0
12
25
39
52
79
92
105
119
t [sec]
0.0 -7.5 -5.0 << Coil in
-2.5
0.0 X [mm]
2.5
5.0
7.5 coil out >>
Le: electrical inductance variation with voice coil displacement
Stiffness of suspension Kms (X) Kms [N/mm]
8
65
-Xprot < X < Xprot
Xp- < X < Xp+
Kms (-X)
KLIPPEL KLIPPEL 7
Power test done with intermittent excitation, ON interval 2min, duty cycle 50%, pink noise signal 6dB crest factor with frequency range 50-2000Hz.
Cms [mm/N] 0.50
Mechanical compliance Cms (X)
-Xprot < X < Xprot
Xp- < X < Xp+
Cms (-X) KLIPPEL KLIPPEL
0.45 0.40
6
0.35
5
0.30
4
0.25 0.20
3
0.15 2
0.10
1
0.05 0.00
0 -7.5 -5.0 << Coil in
-2.5
0.0 X [mm]
2.5
5.0 7.5 coil out >>
Kms: stiffness of suspension variation with voice coil displacement
-7.5
-5.0
<< Coil in
-2.5
X [mm]
0.0
2.5
5.0
coil out >>
Cms: mechanical compliance variation with voice coil displacement
7.5
Voicec Coil Temperature [°C]
-7.5
