The original G12M of the 1960s was Celestion’s first guitar speaker
to use a ceramic magnet and paved the way for high power guitar
amplifiers. The G12M uses a medium weight magnet to produce a sound
that is smooth and warm but bright enough to hold its own against any
rock backline.
Known simply these days as the ‘Greenback’, the G12M’s fabled
‘brown tone’ is characterised by a warm, controlled low-end, a rich,
vocal mid-range and a delicate, detailed top-end. Loaded into a 4x12
and driven hard, these speakers exude warm, crunchy chords and sweet
searing single-notes.
GENERAL SPECIFICATIONS
Nominal diameter
12", 305mm
Power Rating
20W
Nominal impedance
8Ω and 15Ω
Sensitivity
96dB
Chassis type
Pressed steel
Voice coil diameter
1.75", 44.5mm
Voice coil material
Round copper
Magnet type
Ceramic
Magnet weight
35oz, 0.99kg
Frequency range
75-5000Hz
Resonance frequency, Fs
75Hz
DC resistance, Re
6.57Ω & 12.3Ω
MOUNTING INFORMATION
Diameter
12.2", 309mm
Overall depth
5.1", 130mm
Magnet structure diameter
5.9", 150mm
Cut-out diameter
11.1", 283mm
Mounting slot dimensions
0.31", 7.9mm Ø
Number of mounting slots
4
Mounting slot PCD
11.7", 297mm
Unit weight
7.9lb, 3.6kg
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