Celestion Classic Series G12M Greenback User manual

GUITAR
LOUDSPEAKERS
110
90
70
20 100 1k 20k
FREQUENCY (Hz)
SPL (dB)
8ΩFREQUENCY RESPONSE
Celestion International Ltd, Claydon Business Park, Great Blakenham, Ipswich, IP6 0NL, England
Tel: [phone] Fax: [phone] [email protected] www.celestion.com
G12M
GREENBACK
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& 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