| Content |
The G12M Greenback has evolved over the decades but still retains its essential, sought-after tone.
This version exhibits all the classic G12M characteristics but is voiced with additional broad mid-range attack and restrained top-end to give a forward, punchy attitude to chords and a searing lead tone without fizz.
With its well-controlled low-end it can be used singly in low-powered amps, or in multiples for high-power rock heads. It's an ideal speaker to bring drive and definition to modern high gain amps.
General
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| Product type |
Cone driver |
| Brand |
Celestion |
| Reference |
G12M Greenback |
| Product code |
T1221 |
Informations
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| Nominal impedance |
16 ohm |
| Dimensional category |
12 inch |
| Guitar speaker type |
Guitar |
| Nominal power handling |
25 W |
| Bandwidth |
75÷5000 Hz |
Datas
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| Weight |
~4.4 kg |
Dimensions
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| Voice coil diameter |
1.75 inch |
| Outside diameter |
309 mm |
| Baffle cutout diameter |
283 mm |
| Depth after front |
130 mm |
| Diamètre aimant (mm) |
150 mm |
Shape & Materials
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| Front chape |
Cylindrical |
| Magnet type |
Ferrite |
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This classic guitar speaker actually started life as a radio speaker that was modified specifically for use in electric guitar amplifiers. In its original incarnation as the G12 T530 it appeared in several colour variations, but it was the Blue version, fitted as standard into Vox AC30 amps, that secured its place in guitar tone history.
The Blue found favour with notable guitarists like Brian May, due to its glorious dampened attack, warm lows, mellow upper-mids and brilliant belllike top-end. When coupled with a suitable amplifier it evokes rich definition and develops beautiful musical compression when pushed. According to tone enthusiasts worldwide, the Blue is the benchmark for guitar speaker perfection.
| General specifications |
|---|
| Nominal diameter | 12“, 305mm | | Power Rating | 15W | | Nominal impedance | 8Ω and 15Ω | | Sensitivity | 100dB | | Chassis type | Pressed steel | | Voice coil diameter | 1.75“, 44.5mm | | Voice coil material | Round copper | | Magnet type | Alnico | | Frequency range | 75-5000Hz | | Resonance frequency, Fs | 75Hz | | DC resistance, Re | 6.4Ω & 11.8Ω | | Mounting Information | | Diameter | 12.2“, 309mm | | Overall depth | 6.5“, 165mm | | Magnet structure diameter | 5.0“, 128mm | | 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 | 9.3lb, 4.2kg |
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- Neodymium Coaxial Transducer
- 98 dB Sensitivity 1 W / 1 m
- 500 W + 80 W Power Handling
- 3" Copper Sandwich Voice Coil
- Triple Aluminum demodulating Rings
- Elliptical 80° x 60° Waveguide for precise directivity
- Single Point Source providing coherent Wave Front
- Very high SPL, superb Quaity Sound
- Optimal for compact 2-way Systems
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| 1400 W continuous program power capacity |
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| 100 mm (4 in) copper voice coil |
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| 45 – 1000 Hz response |
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| 93 dB sensitivity |
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| Double silicone spider with optimized compliance |
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Originally created as a higher-power handling variant of the G12M Greenback, the G12-65 is widely regarded as one of the best speakers ever produced for use in a 4x12 cabinet.
With its fast attack and tightly controlled low-end, the G12-65 became a firm favourite in the ʼ80s with hard rock players. The precisely tuned midrange and crisp defined top-end contribute to an aggressive crunch sound that punches through the mix while the mid-range warmth and detail give weight and depth to single notes.
| General specifications |
|---|
| Nominal diameter | 12“, 305mm | | Power Rating | 65W | | Nominal impedance | 8Ω and 15Ω | | Sensitivity | 97dB | | Chassis type | Pressed steel | | Voice coil diameter | 1.75“, 44.5mm | | Voice coil material | Rounded copper | | Magnet type | Ceramic | | Magnet weight | 35oz, 0.99kg | | Frequency range | 80-5000Hz | | Resonance frequency, Fs | 85Hz | | DC resistance, Re | 6.9Ω & 11.8Ω | | Mounting Information | | Diameter | 12.2“, 309mm | | Overall depth | 5.0“, 128mm | | Magnet structure diameter | 5.7“, 145mm | | 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 | 12.1lb, 5.5kg |
| BETA- 12A Series Standard American
Recommended for professional audio and bass guitar applications as a woofer in a vented enclosure. Also
works well for PA in a sealed or bandpass enclosure.
SPECIFICATION
- Nominal Basket Diameter 12", 304.8 mm
- Nominal Impedance 8 ohms
- Power Rating Watts 250 W / Music Program 500 W
- Resonance 47 Hz
- Usable Frequency Range 43 Hz - 3.8 kHz
- Sensitivity 98
- Magnet Weight 38 oz.
- Gap Height 0.312", 7.92 mm
- Voice Coil Diameter 2", 50.8 mm
THIELE & Small Parameters
- Resonant Frequency (fs) 47 Hz
- DC Resistance (Re) 5.0
- Coil Inductance (Le) 0.64 mH
- Mechanical Q (Qms) 6.00
- Electromagnetic Q (Qes) 0.50
- Total Q (Qts) 0.46
- Compliance Equivalent Volume (Vas) 120.1 liters / 4.2 cu. ft.
- Peak Diaphragm Displacement Volume (Vd) 237 cc
- Mechanical Compliance of Suspension (Cms) 0.29 mm/N
- BL Product (BL) 10.8 T-M
- Diaphragm Mass inc. Airload (Mms) 40 grams
- Efficiency Bandwidth Product (EBP) 94
- Maximum Linear Excursion (Xmax) 4.4 mm
- Surface Area of Cone (Sd) 538.9 cm²
- Maximum Mechanical Limit (Xlim) 11 mm
MOUNTING Information
- Recommended Enclosure Volume
Sealed 25.5-35.4 liters, 0.9-1.25 cu.ft.
Vented 36.8-139 liters/1.3-4.9 cu.ft.
- Overall Diameter 12.03", 305.5 mm
- Baffle Hole Diameter 10.95", 278.1 mm
- Front Sealing Gasket standard fitted as standard
- Rear Sealing Gasket standard fitted as standard
- Mounting Holes Diameter 0.25", 6.4 mm
- Mounting Holes B.C.D. 11.59", 294.3 mm
- Depth 4.57", 116 mm
MATERIALS of Construction
- Copper voice coil
- Polyimide former
- Ferrite magnet
- Vented and extended core
- Pressed steel basket
- Paper Cone
- Cloth cone edge
- Solid composition paper dust cap
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