Celestion Blue
12" 15W Guitar Speaker


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The Celestion Blue is a classic guitar speaker that started out as a radio speaker, which was then 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 favor 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.

Celestion Blue Specifications:

  • Nominal diameter: 12" (305 mm)
  • Power rating: 15W rms
  • Nominal impedance: Available 8 ohm or 15 ohm
  • Sensitivity: 100dB
  • Chassis type: Pressed steel
  • Voice coil diameter: 1.75" (44.5 mm)
  • Voice coil material: Round copper
  • Magnet type: Alnico
  • Frequency range: 75 Hz -5 kHz
  • Resonance frequency, Fs: 75Hz
  • DC resistance, Re: Available 6.4 ohm or 11.8 ohm
  • Mounting Information:
    • Cut-out diameter: 11.1" (283 mm)
    • Diameter: 12.2" (309 mm)
    • Magnet structure diameter: 5" (128 mm)
    • Mounting slot dimensions: 0.31" (7.9 mm Ø)
    • Mounting slot PCD: 11.7" (297 mm)
    • Number of mounting slots: 4
    • Overall depth: 6.5" (165 mm)
    • Unit weight: 9.3 lbs (4.2 kg)
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