Jensen P8R 4 Ohm User manual

Loudspeakers

8"- 25W Vintage Alnico Guitar Loudspeaker

P8R - 4Ω / 8Ω

G ENE RAL C HARACTE RIST ICS

Nominal Ov erall Dia met er 207 mm. 8 in.
Nominal Voice Coil Diamete r 25 mm. 1.00 in.
Mag net Wei ght 200 g 7.00 oz
Ove rall Weig ht 2.65 lbs
Flux Dens ity 0.9 6 T

THIEL E-S MALL PAR AMETERS 4 Ω 8Ω

Voice Coil DC Re sis tance

R

E

3.00 6.70 Ω

Res onance Frequ ency

ƒ

S

129.0 130.0 Hz

Me chanical Q Facto r

Q

M S

8.6 7 9.18

Electrical Q Factor

Q

ES

1.72 2.30

To tal Q Facto r

Q

TS

1.43 1.84

Me chanical Movin g Mas s

M

M S

9.3 9.3 g

Me chanical Complian ce

C

M S

164 16 1 µm/N

Force Factor Bx L 3.72 4.72 Wb/m

Equi valent Acous tic Volu me

V

AS

10.5 10.3 lt.

Maximum Lin ear Disp lacemen t

X

M AX

± 1.00 ± 1.00 mm

Refe rence Efficie ncy

n

O

1.27 0 .95 %

Diap hragm Area

S

D

213.8 213.8

cm

2

Los se s Ele ctrical Resistan ce

R

ES

16.0 27.0 Ω

Voice Coil In ducta nce @ 1kHz

L

E

0.21 0.36 mH

CO NST RUC TIVE CHARAC TER IST ICS

Mag net Alnico
Voice Coil Win ding Cop per
Voice Coil Fo rmer Epot ex
Con e Mate rial Paper
Surrou nd Mate rial Int egrated Pape r
Dus t Do me Material Tre ated Cloth
Bask et M aterial Pres se d S hee t Ste el

ELECTR ICAL CHARACT ERI ST ICS 4 Ω 8Ω

Nominal Impe dance 4 8 Ω
Rate d Po wer 25 25 W
Musical Po wer 50 50 W
Sen sitivity@1W,1m 94.1 92.5 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

12/21/2015

Due to continuing product improvement, the features and the design are subject to change without notice.

Je nse n Lo udspe akers · we bsit e: www.j ens en ton e.c om · e mail: inf o@ jen se nto ne .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

Ω

P8R 4Ω

P8R 8Ω

1