Speaker - Jensen® Vintage Alnico, 8", P8R, 25W

Speaker - Jensen® Vintage Alnico, 8", P8R, 25W

Jensen
Speaker - Jensen® Vintage Alnico, 8", P8R, 25W image 1
Speaker - Jensen® Vintage Alnico, 8", P8R, 25W image 2
Speaker - Jensen® Vintage Alnico, 8", P8R, 25W image 3
Speaker - Jensen® Vintage Alnico, 8", P8R, 25W image 4
Click to zoom in
Speaker - Jensen® Vintage Alnico, 8", P8R, 25W image 1Speaker - Jensen® Vintage Alnico, 8", P8R, 25W image 2Speaker - Jensen® Vintage Alnico, 8", P8R, 25W image 3Speaker - Jensen® Vintage Alnico, 8", P8R, 25W image 4
Customer Images:
No Images yet! Submit a product image below!
$99.78
In Stock

One of the archetypical speakers in the range, the P8R has been installed in thousands of Champ and Princeton style amps for decades. Slightly clearer sounding than the C8R, its ceramic cousin, the P8R shines in clean and slightly crunch applications, where the typical chime of the AlNiCo magnets helps the sparkling harmonics to bloom.

Guitarist Description: Warm clean tone with emphasis on the highs. Responds to overdrive distortion with a warm and bright fuzz lead voice.

  • Lows: Loose
  • Mids: Subdued
  • Highs: Bright
  • Overdrive: Smooth

For more information about our Jensen® speakers, see our tech corner article on Jensen Speakers.

SKU:
P-A-P8R
Item ID:
001977
Brand:
JensenJensen VintageAlnico
Magnet Type:
Size:
RoHS Compliant
Part Numbers
ImpedanceOur Part NumberUPC/EANJensen Part Number
4 ΩP-A-P8R-48034028640063 ZJ04050
8 ΩP-A-P8R-88034028640056 ZJ04040
Product Measurements by Type
Basket MaterialPressed Sheet Steel
Cone MaterialPaper
Depth4.1141 in.
Diameter8 in.
Diaphragm Area (SD)213.80 cm2
Dust Dome MaterialSolid Paper
Equivalent Acoustic Volume (VAS)4 Ω versionP-A-P8R-410.50
8 Ω versionP-A-P8R-810.30 liters
Flux Density0.96 T
Force Factor (BxL)4 Ω versionP-A-P8R-43.72 Wb/m
8 Ω versionP-A-P8R-83.99 Wb/m
Inner Diameter7.0275 in.
Linear Displacement, maximum (XMAX)1.00 mm
Losses Electrical Resistance (RES)4 Ω versionP-A-P8R-416.00 Ω
8 Ω versionP-A-P8R-827.00 Ω
Magnet Assembly Depth1.9488 in.
Magnet TypeAlnico
Magnetic Gap Depth6.00 mm
Mechanical Compliance (CMS)4 Ω versionP-A-P8R-4164.00 µm/N
8 Ω versionP-A-P8R-8159.00 µm/N
Mechanical Moving Mass (MMS)4 Ω versionP-A-P8R-49.30 g
8 Ω versionP-A-P8R-88.80 g
Mechanical Q Factor (QMS)8.67
Mounting Hole Bolt Circle Diameter7.7559 in.
Mounting Hole Diameter0.1968 in.
Musical Power50.00 W
Nominal Overall Diameter207.00 mm
Nominal Voice Coil Diameter25.00 mm
Outer Diameter8.1496 in.
Rated Power25.00 W
Reference Efficiency (nO)4 Ω versionP-A-P8R-41.27 %
8 Ω versionP-A-P8R-80.95 %
Resonance Frequency (ƒS)4 Ω versionP-A-P8R-4129.00 Hz
8 Ω versionP-A-P8R-8135.00 Hz
Sensitivity @ 1W, 1m4 Ω versionP-A-P8R-494.10 dB
8 Ω versionP-A-P8R-891.80 dB
Surround MaterialIntegrated Paper
Surround TreatmentYes
Total Q Factor (QTS)4 Ω versionP-A-P8R-41.43
8 Ω versionP-A-P8R-82.28
Voice Coil DC Resistance (Re)4 Ω versionP-A-P8R-43.00 Ω
8 Ω versionP-A-P8R-86.60 Ω
Voice Coil Diameter1 in.
Voice Coil FormerEpotex
Voice Coil Inductance @ 1 kHZ (LE)4 Ω versionP-A-P8R-40.21 mH
8 Ω versionP-A-P8R-80.36 mH
Voice Coil Winding Depth4.00 mm
Voice Coil Winding TypeCopper
Packaging Information
Packaging Dimensions9.1 in. × 9.1 in. × 6 in.
Weight (Packaging)3.1 lbs.
Product Measurements by Item
P-A-P8R-4 - 4 Ω versionBasket MaterialPressed Sheet Steel
Cone MaterialPaper
Depth4.1141 in.
Diameter8 in.
Diaphragm Area (SD)213.80 cm2
Dust Dome MaterialSolid Paper
Equivalent Acoustic Volume (VAS)10.50
Flux Density0.96 T
Force Factor (BxL)3.72 Wb/m
Inner Diameter7.0275 in.
Linear Displacement, maximum (XMAX)1.00 mm
Losses Electrical Resistance (RES)16.00 Ω
Magnet Assembly Depth1.9488 in.
Magnet TypeAlnico
Magnetic Gap Depth6.00 mm
Mechanical Compliance (CMS)164.00 µm/N
Mechanical Moving Mass (MMS)9.30 g
Mechanical Q Factor (QMS)8.67
Mounting Hole Bolt Circle Diameter7.7559 in.
Mounting Hole Diameter0.1968 in.
Musical Power50.00 W
Nominal Overall Diameter207.00 mm
Nominal Voice Coil Diameter25.00 mm
Outer Diameter8.1496 in.
Rated Power25.00 W
Reference Efficiency (nO)1.27 %
Resonance Frequency (ƒS)129.00 Hz
Sensitivity @ 1W, 1m94.10 dB
Surround MaterialIntegrated Paper
Surround TreatmentYes
Total Q Factor (QTS)1.43
Voice Coil DC Resistance (Re)3.00 Ω
Voice Coil Diameter1 in.
Voice Coil FormerEpotex
Voice Coil Inductance @ 1 kHZ (LE)0.21 mH
Voice Coil Winding Depth4.00 mm
Voice Coil Winding TypeCopper
P-A-P8R-8 - 8 Ω versionBasket MaterialPressed Sheet Steel
Cone MaterialPaper
Depth4.1141 in.
Diameter8 in.
Diaphragm Area (SD)213.80 cm2
Dust Dome MaterialSolid Paper
Equivalent Acoustic Volume (VAS)10.30 liters
Flux Density0.96 T
Force Factor (BxL)3.99 Wb/m
Inner Diameter7.0275 in.
Linear Displacement, maximum (XMAX)1.00 mm
Losses Electrical Resistance (RES)27.00 Ω
Magnet Assembly Depth1.9488 in.
Magnet TypeAlnico
Magnetic Gap Depth6.00 mm
Mechanical Compliance (CMS)159.00 µm/N
Mechanical Moving Mass (MMS)8.80 g
Mechanical Q Factor (QMS)8.67
Mounting Hole Bolt Circle Diameter7.7559 in.
Mounting Hole Diameter0.1968 in.
Musical Power50.00 W
Nominal Overall Diameter207.00 mm
Nominal Voice Coil Diameter25.00 mm
Outer Diameter8.1496 in.
Rated Power25.00 W
Reference Efficiency (nO)0.95 %
Resonance Frequency (ƒS)135.00 Hz
Sensitivity @ 1W, 1m91.80 dB
Surround MaterialIntegrated Paper
Surround TreatmentYes
Total Q Factor (QTS)2.28
Voice Coil DC Resistance (Re)6.60 Ω
Voice Coil Diameter1 in.
Voice Coil FormerEpotex
Voice Coil Inductance @ 1 kHZ (LE)0.36 mH
Voice Coil Winding Depth4.00 mm
Voice Coil Winding TypeCopper

My Project Lists

You must be logged in to add items to a project list.

Specifications, Files, and Documents

Sound Samples:

PDF: Specification Sheet Specification Sheet173.77 KB
PNG: Terminal Dimensions Terminal Dimensions21.21 KB

Questions and Answers

Click each question to see its answers.
Asked by [email protected] on December 14th, 2017.
Matt H.
December 15th, 2017
Staff Member
The overall depth is 3.88" (98.5mm).
Asked by Anonymous on March 21st, 2019.
BradWbr
March 22nd, 2019
Staff Member
According to the data sheet above, the mounting holes are 197mm (7.75") apart. Yes, we ship internationally.

Product Reviews

5.00 out of 5 based on 1 reviews
- February 22nd, 2015
5 out of 5

Great replacement for the original Phillips in the silver face Vibro Champ. Late Breakup lets the tubes get into saturation while still having good touch sensitivity. Nice tone without modifying the amp.