Due to continuing product improvement, the features and the design are subject to change without notice.
03/03/14
SICA Altoparlanti s.r.l. - ITALY – website: www.sica.it - E-mail: lab@sica.it - Tel. +39-071-7958072 - Fax +39-071-7959006
BS
BS
BS
BS 8
8
8
8N/
N/
N/
N/250
250
250
250A
A
A
A 8
8
8
8
Code
Code
Code
Code ZJ04810
ZJ04810
ZJ04810
ZJ04810
8"
8"
8"
8" 500
500
500
500W
W
W
W
•
Smooth sound bass guitar loudspeaker
•
2.5” voice coil fiberglass former
•
Cone waterproof treatment
•
Ventilated magnet circuit to reduce power compression
•
Neodymium magnet circuit
•
92.6 dB sensitivity
Specifications
Nominal Diameter
210mm (8")
Nominal Impedance
8
Ω
Rated Power AES
(1)
250W
Continuous Program Power
(2)
500W
Sensitivity @ 1W/1m
(3)
92.6dB
Voice Coil Diameter
65mm (2.5")
Voice Coil Winding Depth
18mm
Magnetic Gap Depth
8mm
Flux Density
1.04T
Magnet Weight
220g
Net Weight
1.8kg
Thiele & Small Parameters
(4)
Re
5.50
Ω
Fs
59.0Hz
Qms
6.72
Qes
0.39
Qts
0.37
Mms
32.0g
Cms
230µm/N
Bxl
12.85Tm
Vas
14.9l
Sd
213.8cm
2
X max
(5)
+/-5.0mm
X var
(6)
+/-8.0mm
η
0
0.74%
Le (1kHz)
0.80mH
Constructive Characteristics
Magnet
: Neodymium
Basket Material
: Aluminium Die-Cast
Voice Coil Winding Material
: Copper
Voice Coil Former Material
: Fiberglass
Cone Material
: Paper
Cone Treatment
: Surface Waterproof Treatment
Surround Material
: Treated Cloth
Dust Dome Material
: Solid Paper
Frequency Response on 15 Litres Vented Box @ 1W, 0.5m, normalized to SPL 1m
Free Air Impedance
Note:
1 : Rated Power measured with 2
hours test with pink noise signal, 6dB
crest factor, loudspeaker mounted on
enclosure
2: Power on Continuous Program is
defined as 3 dB greater than the Rated
Power
3: Calculated by Thiele & Small
parameters
4:
Thiele
&
Small
parameters
measured with laser system without
preconditioning test
5: Measured with respect to a THD of
10% using a parameter-based method
6: Value corresponding to a decay of
the Force Factor, or Compliance, or
both, equal to the 50% of the small
signal value.
7: Drawing dimensions: mm
3
5 0 0
5
1 0
2 0
5 0
1 0 0
2 0 0
Ω
Ω
Ω
Ω
+ 6 0
+ 1 1 0
+ 6 5
+ 7 0
+ 7 5
+ 8 0
+ 8 5
+ 9 0
+ 9 5
+ 1 0 0
+ 1 0 5
d
B
S
P
L
2 0
2 0 k
5 0
1 0 0
2 0 0
5 0 0
1 k
2 k
5 k
1 0 k
H z
bass guitar
smooth
