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.
| General specifications |
| Nominal diameter |
12", 305mm |
| Power Rating |
25W |
| Nominal impedance |
8Ω and 16Ω |
| Sensitivity |
98dB |
| 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 |
6.7Ω & 13.1Ω |
| 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 |
|
