Speaker - Celestion, 12", G12 Alnico Blue, 15W

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Speaker - Celestion, 12", G12 Alnico Blue, 15W

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This classic guitar speaker actually started life as a radio speaker that was modified specifically for use in electric guitar amplifiers. In its original incarnation as the G12 T530 it appeared in several color variations, but it was the Blue version, fitted as standard into Vox AC30 amps, that secured its place in guitar tone history.The Blue found favour with notable guitarists like Brian May, due to its glorious dampened attack, warm lows, mellow upper-mids and brilliant bell-like top-end. When coupled with a suitable amplifier it evokes rich definition and develops beautiful musical compression when pushed. According to tone enthusiasts worldwide, the Blue is the benchmark for guitar speaker perfection.

RoHS Compliant
Item ID:
CelestionCelestion Alnico
Part Numbers
ImpedanceOur Part NumberUPC/EAN
15 ΩP-A-G12-15739894443609
8 ΩP-A-G12-8739894442701
Product Measurements
Chassis TypePressed steel
Cut-out Diameter11.1 in.
D.C. Resistance (Re) 8 Ω version6.4 Ω
15 Ω version11.8 Ω
Diameter12.2 in.
Frequency Range75 Hz - 5,000 Hz
Magnet Structure Diameter128 mm
Magnet TypeAlnico
Magnet Weight30 oz.
Mounting Hole Bolt Circle Diameter297 mm
Mounting Hole Diameter7.9 mm
Mounting Slots4
Nominal Diameter12 in.
Nominal Impedance8 Ω version8 Ω
15 Ω version15 Ω
Overall Depth165 mm
Power Rating15 W
Resonance Frequency (ƒS)75 Hz
Sensitivity100 dB
Voice Coil Diameter1.75 in.
Voice Coil MaterialRound copper
Packaging Information
Packaging Dimensions8 Ω version13.5 in. × 13.5 in. × 7.3 in.
15 Ω version13 in. × 13.5 in. × 7.75 in.
Weight (Packaging)10.4 lbs.

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Specifications, Files, and Documents

Sound Samples:

PDF: Specification Sheet Specification Sheet752.62 KB

Questions and Answers

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Asked by Anonymous on October 19th, 2016.
Matt H
October 19th, 2016
The Celestion Blue has an overall depth of 6.5" and a diameter of 12.2". I would measure your current speaker to insure a proper fit.
February 19th, 2018
Yes it will. I installed one in my AC4HW two years ago, and it fit with no problems.
Asked by Anonymous on March 7th, 2017.
Matt H
March 7th, 2017
Yes, both the Celestion Blue and Gold are made in the UK.

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