Description
Before high-wattage amps became the norm, Celestion’s original G12M broke ground as the brand’s first ceramic-magnet guitar speaker. This Heritage Series reissue, the T1220-67/P, rebuilds that early driver to its authentic 1960s specification, giving players access to the tone that shaped a generation of British rock.
Guitarists know it affectionately as the ‘Greenback,’ and its sonic signature is unmistakable: a firm, warm low-end that never turns muddy, a mid-range with real vocal character, and a top-end that stays smooth without losing detail. Push a 4×12 loaded with these drivers into overdrive and you get thick, chewy rhythm chords alongside single notes that cut with a sweet, singing edge — the ‘brown tone’ that’s been chased by amp builders ever since.
At 20 watts and 8 ohms, the G12M is built for players who want vintage-correct headroom rather than clean-and-loud stadium output — think smaller stages, studio work, or anyone building a period-accurate rig where controlled compression is part of the appeal.
- Nominal diameter: 12″ (305mm)
- Power rating: 20W
- Nominal impedance: 8Ω (also available in 15Ω)
- Sensitivity: 96dB
- Chassis: Pressed steel
- Voice coil: 1.75″ (44.5mm), round copper
- Magnet: Ceramic, 35oz (0.99kg)
- Frequency range: 75-5000Hz
- Resonance frequency (Fs): 75Hz
- DC resistance (Re): 6.57Ω & 12.3Ω
- Unit weight: 7.9lb (3.6kg)
A direct, drop-in upgrade or replacement for any cabinet built around the classic Greenback voicing.
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