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Celestion T1220 G12M Greenback Guitar Speaker - 8 Ohm
Description
The G12M Greenback has evolved over the decades but still retains its essential, sought- after tone. Angus Young has been a Greenback devotee since the early days of AC/DC. This model 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.
Power rating: 25Wrms
Nominal impedance: 8Ω
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
Specifications
Nominal diameter: 12", 305mmPower rating: 25Wrms
Nominal impedance: 8Ω
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
Q & A
Question: Hello, is this speaker (T1220 G12M Greenback made in England or China?
- asked on Apr 11, 2025
- asked on Apr 11, 2025
Answer: All Celestion Greenbacks are made in the UK.
- answered by mike pawelko, Winnipeg (Pembina), Manitoba
- answered by mike pawelko, Winnipeg (Pembina), Manitoba
Reviews
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5.0/ 5 1 Reviews
5 StarsGreenback in Marshall DSL40
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Features
Quality
Value
Overall
Product Experience I own it
Closest Store Toronto (Bloor St.), Ontario
I just swapped out the stock Seventy80 from my DSL40C Vintage for a Greenback, and WHAT A DIFFERENCE. (G12M 8ohm) 25w
I use the classic gain channel on triode (20w) mode almost exclusively, and play original 60/70s inspired rock. As expected the icepick highs were gone, general tone shape was much more rich with a delicious break up, and the picking dynamics and subtleties in my playing were greatly enhanced. I play a Firebird with Lord Firebird Pickups, and had never been able to play my bridge pickup on full tone, because of the brittleness of the stock speaker, but now can let rip at a whim. (T3, M7, B7)
In doing the swap, I realized that the stock speaker is designed to largely appeal to newer, probably younger buyers, who would be searching for tones in the Ultra Gain channel, and looking to keep their budget under a grand. This speaker upgrade would put the dsl NEAR the SV20 in overall tone quality, so they had to keep these ones cheap, or no one would opt for the next step up, right?
In short - it sounds close to a vintage Plexi, but in an affordable combo. I highly recommend this upgrade for anyone in to classic rock looking for an easy, affordable and palpable upgrade. This is also with the new Greenback right out of the box and not even broken in yet..
I use the classic gain channel on triode (20w) mode almost exclusively, and play original 60/70s inspired rock. As expected the icepick highs were gone, general tone shape was much more rich with a delicious break up, and the picking dynamics and subtleties in my playing were greatly enhanced. I play a Firebird with Lord Firebird Pickups, and had never been able to play my bridge pickup on full tone, because of the brittleness of the stock speaker, but now can let rip at a whim. (T3, M7, B7)
In doing the swap, I realized that the stock speaker is designed to largely appeal to newer, probably younger buyers, who would be searching for tones in the Ultra Gain channel, and looking to keep their budget under a grand. This speaker upgrade would put the dsl NEAR the SV20 in overall tone quality, so they had to keep these ones cheap, or no one would opt for the next step up, right?
In short - it sounds close to a vintage Plexi, but in an affordable combo. I highly recommend this upgrade for anyone in to classic rock looking for an easy, affordable and palpable upgrade. This is also with the new Greenback right out of the box and not even broken in yet..
Posted by Scotty on Feb 8, 2026
Reserve in Store
| Product | SKU | Qty |
|---|---|---|
| T1220 G12M Greenback Guitar Speaker - 8 Ohm | 132449 |
