Jensen Loudspeakers P-A-P8R User Manual
Loudspeakers
8"-25W Vintage Alnico Guitar Loudspeaker
P8R - 4W / 8W
GENERAL CHARACTERISTICS
Nominal Overall Diameter 207 mm. 8 in.
Nominal Voice Coil Diameter 25 mm. 1.00 in.
Magnet Weight 200 g 7.00 oz
Overall Weight 2.64 lbs
Flux Density 0.96 T
Voice Coil Winding Depth 0.16 in.
Magnetic Gap Depth 0.24 in.
THIELE-SMALL PARAMETERS 4W 8W
Voice Coil DC Resistance
R
E
3.00 6.60 W
Resonance Frequency
ƒ
S
129.0 135.0 Hz
Mechanical Q Factor
Q
MS
8.67 8.67
Electrical Q Fa ctor
Q
ES
1.72 2.30
Total Q Factor
Q
TS
1.43 2.28
Mechanical M oving M ass
M
MS
9.3 8.8 g
Mechanical C ompliance
C
MS
164 159 µm/N
Force Factor BxL 3.72 3.99 Wb/m
Equivalent Acoustic Volume
V
AS
10.5 10.3 lt.
Maximum Linear Displacement
X
MAX
1.00 1.00 mm
Reference Efficiency
n
O
1.27 0.95 %
Diaphragm Area
S
D
213.8 213.8
cm
2
Losses Electrical Resistance
R
ES
16.0 27.0 W
Voice Coil Inductance @ 1kHz
L
E
0.21 0.36 mH
CONSTRU CTIVE CH ARACTERISTICS
Magnet Alnico
Voice Coil Winding Copper
Voice Coil Former Epotex
Cone Material Paper
Surround Material Integrated Paper
Dust Dome Material Solid Paper
Basket Material Pressed Sheet Steel
Surround Treatment Yes
ELECTRICAL CHARACTERISTICS 4W 8W
Nominal Impedance 4 8 W
Rated Power 25 25 W
Musical Power 50 50 W
Sensitivity@1W,1m 94.1 91.8 dB
207.0
178.55.0
49.0
1.0
n°4 holes Ø 8 × 5
at 90° on Ø 197.0
49.5
6.0
98.5
03/08/2017
Due to continuing product improvement, the features and the design are subject to change w ithout notice.
Jensen Loudspeakers · website: www.jensentone.com · email: info@jensentone.com
2 5
100
2 5
1000
2 5
10k
2
+60
+65
+70
+75
+80
+85
+90
+95
+100
+105
+110
5
10
2
5
100
2
5
Frequency Response on IEC Baffle (DIN 45575) @ 1W, 1m - Free Air Impedance
Hz
dB SPL
W
P8R 4W
P8R 8W
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