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

Speaker - Jensen® Vintage Alnico, 8", P8R, 25W image 3

Speaker - Jensen® Vintage Alnico, 8", P8R, 25W image 4

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SKU:	P-A-P8R
Item ID:	001977

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Type

Size

Watts

Ohms

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.

Part Numbers
Impedance	Our Part Number	UPC/EAN	Jensen Part Number
4 Ω	P-A-P8R-4	8034028640063	ZJ04050
8 Ω	P-A-P8R-8	8034028640056	ZJ04040

RoHS Compliant

Accessory Items:

Bell Cover - Jensen®, for Alnico R and Q Type Speakers

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Specifications, Files, and Documents

Sound Samples:

Now Playing: Blues Sound Sample

Blues Sound Sample00:49https://www.cedist.com/sites/default/files/associated_files/p8r_blues.mp3

Clean Sound Sample00:15https://www.cedist.com/sites/default/files/associated_files/p8r_clean.mp3

Country Sound Sample00:35https://www.cedist.com/sites/default/files/associated_files/p8r_country.mp3

Jazz Sound Sample00:43https://www.cedist.com/sites/default/files/associated_files/p8r_jazz.mp3

Metal Sound Sample00:53https://www.cedist.com/sites/default/files/associated_files/p8r_metal.mp3

Overdriven Sound Sample00:15https://www.cedist.com/sites/default/files/associated_files/p8r_overdriven.mp3

Rock Sound Sample00:41https://www.cedist.com/sites/default/files/associated_files/p8r_rock.mp3

Product Measurements by Type (click to expand)

Product Measurements by Type
Basket Material		Pressed Sheet Steel
Cone Material		Paper
Depth		4.1141 in.
Diameter		8 in.
Diaphragm Area (S_D)		213.80 cm²
Dust Dome Material		Solid Paper
Equivalent Acoustic Volume (V_AS)	4 Ω version	10.50
Equivalent Acoustic Volume (V_AS)	8 Ω version	10.30 liters
Flux Density		0.96 T
Force Factor (BxL)	4 Ω version	3.72 Wb/m
Force Factor (BxL)	8 Ω version	3.99 Wb/m
Inner Diameter		7.0275 in.
Linear Displacement, maximum (X_MAX)		1.00 mm
Losses Electrical Resistance (R_ES)	4 Ω version	16.00 Ω
Losses Electrical Resistance (R_ES)	8 Ω version	27.00 Ω
Magnet Assembly Depth		1.9488 in.
Magnet Type		Alnico
Magnetic Gap Depth		6.00 mm
Mechanical Compliance (C_MS)	4 Ω version	164.00 µm/N
Mechanical Compliance (C_MS)	8 Ω version	159.00 µm/N
Mechanical Moving Mass (M_MS)	4 Ω version	9.30 g
Mechanical Moving Mass (M_MS)	8 Ω version	8.80 g
Mechanical Q Factor (Q_MS)		8.67
Mounting Hole Bolt Circle Diameter		7.7559 in.
Mounting Hole Diameter		0.1968 in.
Musical Power		50.00 W
Nominal Overall Diameter		207.00 mm
Nominal Voice Coil Diameter		25.00 mm
Outer Diameter		8.1496 in.
Rated Power		25.00 W
Reference Efficiency (n_O)	4 Ω version	1.27 %
Reference Efficiency (n_O)	8 Ω version	0.95 %
Resonance Frequency (ƒ_S)	4 Ω version	129.00 Hz
Resonance Frequency (ƒ_S)	8 Ω version	135.00 Hz
Sensitivity @ 1W, 1m	4 Ω version	94.10 dB
Sensitivity @ 1W, 1m	8 Ω version	91.80 dB
Surround Material		Integrated Paper
Surround Treatment		Yes
Total Q Factor (Q_TS)	4 Ω version	1.43
Total Q Factor (Q_TS)	8 Ω version	2.28
Voice Coil DC Resistance (R_e)	4 Ω version	3.00 Ω
Voice Coil DC Resistance (R_e)	8 Ω version	6.60 Ω
Voice Coil Diameter		1 in.
Voice Coil Former		Epotex
Voice Coil Inductance @ 1 kHZ (L_E)	4 Ω version	0.21 mH
Voice Coil Inductance @ 1 kHZ (L_E)	8 Ω version	0.36 mH
Voice Coil Winding Depth		4.00 mm
Voice Coil Winding Type		Copper

Packaging Information
Packaging Dimensions		9.1 in. × 9.1 in. × 6 in.
Weight (Packaging)		3.1 lbs.

Product Measurements by Item (click to expand)

Product Measurements by Item
P-A-P8R-4 - 4 Ω version	Basket Material	Pressed Sheet Steel
	Cone Material	Paper
	Depth	4.1141 in.
	Diameter	8 in.
	Diaphragm Area (S_D)	213.80 cm²
	Dust Dome Material	Solid Paper
	Equivalent Acoustic Volume (V_AS)	10.50
	Flux Density	0.96 T
	Force Factor (BxL)	3.72 Wb/m
	Inner Diameter	7.0275 in.
	Linear Displacement, maximum (X_MAX)	1.00 mm
	Losses Electrical Resistance (R_ES)	16.00 Ω
	Magnet Assembly Depth	1.9488 in.
	Magnet Type	Alnico
	Magnetic Gap Depth	6.00 mm
	Mechanical Compliance (C_MS)	164.00 µm/N
	Mechanical Moving Mass (M_MS)	9.30 g
	Mechanical Q Factor (Q_MS)	8.67
	Mounting Hole Bolt Circle Diameter	7.7559 in.
	Mounting Hole Diameter	0.1968 in.
	Musical Power	50.00 W
	Nominal Overall Diameter	207.00 mm
	Nominal Voice Coil Diameter	25.00 mm
	Outer Diameter	8.1496 in.
	Rated Power	25.00 W
	Reference Efficiency (n_O)	1.27 %
	Resonance Frequency (ƒ_S)	129.00 Hz
	Sensitivity @ 1W, 1m	94.10 dB
	Surround Material	Integrated Paper
	Surround Treatment	Yes
	Total Q Factor (Q_TS)	1.43
	Voice Coil DC Resistance (R_e)	3.00 Ω
	Voice Coil Diameter	1 in.
	Voice Coil Former	Epotex
	Voice Coil Inductance @ 1 kHZ (L_E)	0.21 mH
	Voice Coil Winding Depth	4.00 mm
	Voice Coil Winding Type	Copper
P-A-P8R-8 - 8 Ω version	Basket Material	Pressed Sheet Steel
	Cone Material	Paper
	Depth	4.1141 in.
	Diameter	8 in.
	Diaphragm Area (S_D)	213.80 cm²
	Dust Dome Material	Solid Paper
	Equivalent Acoustic Volume (V_AS)	10.30 liters
	Flux Density	0.96 T
	Force Factor (BxL)	3.99 Wb/m
	Inner Diameter	7.0275 in.
	Linear Displacement, maximum (X_MAX)	1.00 mm
	Losses Electrical Resistance (R_ES)	27.00 Ω
	Magnet Assembly Depth	1.9488 in.
	Magnet Type	Alnico
	Magnetic Gap Depth	6.00 mm
	Mechanical Compliance (C_MS)	159.00 µm/N
	Mechanical Moving Mass (M_MS)	8.80 g
	Mechanical Q Factor (Q_MS)	8.67
	Mounting Hole Bolt Circle Diameter	7.7559 in.
	Mounting Hole Diameter	0.1968 in.
	Musical Power	50.00 W
	Nominal Overall Diameter	207.00 mm
	Nominal Voice Coil Diameter	25.00 mm
	Outer Diameter	8.1496 in.
	Rated Power	25.00 W
	Reference Efficiency (n_O)	0.95 %
	Resonance Frequency (ƒ_S)	135.00 Hz
	Sensitivity @ 1W, 1m	91.80 dB
	Surround Material	Integrated Paper
	Surround Treatment	Yes
	Total Q Factor (Q_TS)	2.28
	Voice Coil DC Resistance (R_e)	6.60 Ω
	Voice Coil Diameter	1 in.
	Voice Coil Former	Epotex
	Voice Coil Inductance @ 1 kHZ (L_E)	0.36 mH
	Voice Coil Winding Depth	4.00 mm
	Voice Coil Winding Type	Copper