T1221 Celestion G12M Greenback 12" 16ohm 25w Speaker


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Celestion's first guitar loudspeaker featuring a ceramic magnet structure, the G12M Greenback presented almost as much magnetic flux to the voice coil as an Alnico formulation, but in a much more compact space. As a result the Greenback became the guitar loudspeaker that paved the way for use with higher power amplifiers. And, of course, the ceramic magnet presented its own unique tonal characteristics.

The Greenback has a loud and assertive character that sounds great through a valve amp pushed into overdrive. The speaker has evolved over the decades and still presents that instantly familiar woody tone, delivered with a knockout punch.


Chassis type - Pressed steel
Frequency range - 75-5000Hz
Magnet type - Ceramic
Magnet weight - 35oz, 0.99kg
Nominal diameter - 12", 305mm
Nominal impedance - 16 Ohm
Power rating - 20Wrms
Sensitivity - 96dB
Voice coil diameter - 1.75", 44.5mm
Voice coil material - Round copper