Celestion G12M Greenback 12" 25-Watt Speaker 8 Ohm main image

Celestion G12M Greenback 12" 25-Watt Speaker 8 Ohm image 2

Celestion G12M Greenback 12" 25-Watt Speaker 8 Ohm image 3

Celestion G12M Greenback 12" 25-Watt Speaker 8 Ohm

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$138.00 to $159.00 Price Tier: Standard

4.5 (26)

1 Critic Review

7 Reviews

All time low price

Find out who is using Celestion G12M 12" 25-Watt 8 Ohm

4 community setups

10 wishlisted

62 saved

Page last updated Jul 07, 2026

Pricing and availability

We compare 600+ stores and found this item at 8 stores. Prices updated July 6, 2026.

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5.0 (16)

$150.29

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5.0 (17)

$150.29

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4.8 (206)

$149.79 New

$129.00 Used (Like New)

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5.0 (2)

$159.00 1 available New

$85.00 2 available Used

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5.0 (60)

$150.29

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5.0 (6)

$159.00

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4.8 (98)

$139.00 $138.00 $1.00 · All time low

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£123.50

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Average Price: $143

Standard/Professional

$119

$200+

Price Tier

In the Guitar Amp Speakers category, Celestion G12M Greenback 12" 25-Watt Speaker 8 Ohm is priced in the Standard/Professional range. This is quality gear at a fair price point, suitable for beginners, hobbyists, and pros alike.

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Price History

Based on price data from 5 merchants for "Celestion G12M Greenback 12" 25-Watt Speaker 8 Ohm". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

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Introducing the Celestion G12M Greenback 12" 25-Watt Speaker 8 Ohm, a classic staple of modern music that has defined generations of guitar tones since the 1960s. This speaker is well-known for its warm body, distinctive growl, and assertive voice, making it a favorite among guitarists seeking that authentic British tone.

The G12M Greenback is the first Celestion speaker to feature a ceramic magnet structure, giving it an extra punch and bite that ensures you stand out in any musical style. It pairs perfectly with a powerhouse tube amp, and its 25-Watt power rating ensures it can handle even the most demanding performances.

Whether you're playing Manchester Brit-pop, L.A. shred-metal, or Seattle grunge, the Celestion G12M Greenback 12" 25-Watt Speaker 8 Ohm will deliver the distinctive sound that has made Celestion the undisputed Voice of Rock 'n Roll.

Key Features:

A 12" guitar speaker with classic British sound
Ceramic magnet gives you extra punch and bite
Great for all musical styles
25W power rating ensures performance under demanding conditions
Frequency response of 75Hz-5kHz
8 Ohms impedance
Weighs 7.9 lbs.

Product specs

Application	Guitar
Size	12"
Impedance	8 ohms
Power Handling	25W
Frequency Range	75Hz-5kHz
Magnet Type	Ceramic
Magnet Weight	35 oz.
Magnet Diameter	5.9"
Weight	7.9 lbs.

FAQs

What type of music is the Celestion G12M Greenback speaker best suited for?: The Celestion G12M Greenback is renowned for its warm, mid-range heavy tone, making it ideal for rock, blues, and classic rock genres. Its ability to deliver vintage-style drive and definition is particularly favored by guitarists seeking a classic British sound.
How does the Celestion G12M Greenback handle high gain?: The Celestion G12M Greenback excels at bringing clarity and definition to high gain amplifiers. Its smooth breakup and dynamic response enhance distorted tones, making it a popular choice for players who use overdrive and distortion.
Is the Celestion G12M Greenback suitable for live performances?: With a power handling capacity of 25 watts and an impedance of 8 ohms, the Celestion G12M Greenback is well-suited for small to medium-sized venues. It provides a classic tone that cuts through the mix, making it a reliable choice for live performances.
What is the frequency range of the Celestion G12M Greenback speaker?: The Celestion G12M Greenback has a frequency range of 75Hz to 5kHz, offering a balanced response with pronounced midrange frequencies. This makes it ideal for guitarists seeking rich, full-bodied tones.
What kind of magnet does the Celestion G12M Greenback use?: The Celestion G12M Greenback utilizes a ceramic magnet, which contributes to its distinctive vintage tone and dynamic response. This magnet type helps deliver the speaker's characteristic warmth and midrange emphasis.

Videos

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Adam Steel

G12M vs G12H - Celestion Greenback comparison

Adam Steel

Celestion G12M Greenback, an in-depth look.

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Reviews

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PROS

Excellent for rock and metal, especially when paired with Vintage 30s
Dramatically improves amp sound, yielding creamy, defined vintage tones
Highly versatile across various amps and cabs
Offers a classic British rock sound with warmth and clarity
Provides a balanced tone with good mids and warm highs
Reduces harshness and adds smoothness, especially in UK-made versions
Great for taming bright amps, enhancing overall tonal character
Enhances low-end and tightens sound for smaller amps
Strong build quality with durable construction
Affordable upgrade for improved tonal performance

CONS

Chinese versions may be louder, harsher, and less durable than UK versions
Possible power handling issues with some models
May exhibit nasal upper midrange compression when driven hard

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Celestion G12M Greenback 12" 25-Watt Speaker 8 Ohm.

Build quality

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Baltic birch plywood is recommended for constructing a durable cabinet for the Celestion G12M Greenback speaker.
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Setup and maintenance

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Using a 1/4" mono jack and 18-gauge speaker wire with spade connectors is advised for easy future swaps.
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Features and functionality

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Larger gauge wires are unnecessary for short runs; 18-gauge is sufficient for connecting the Greenback speaker.
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Use cases and applications

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An oversized cabinet with a convertible back plate is suggested for flexibility between open and closed back configurations.
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High gain Marshall tube amps paired with Greenbacks are a staple in heavy music, highlighting their suitability for genres like metal.
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Scumback's pre-worn speakers, like the BH75, are praised for their aggressive sound and compatibility with overdrive.
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Other

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Building a 1x12 cabinet offers learning opportunities in woodworking and electronics, despite potential cost parity with buying a pre-made cabinet.
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Comparisons

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The Celestion EVH is preferred by some over the standard 25-watt Greenback due to its modeling after an earlier version of the Greenback.
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The Eminence Reignmaker, similar to the Greenback, allows sensitivity and dB adjustments via a dial, offering versatility with volume control.
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The Celestion Classic Lead 80 is recommended for diverse genres, offering a balance between vintage tones and modern versatility, unlike the pricier Celestion Blue.
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The WGS Veteran 30 is noted for being more balanced and less nasal in the upper mids compared to the Vintage 30.
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The Neo Creamback significantly reduces amp weight and works well with distortion if the bright cap is clipped.
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User experience

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Owners note that speaker efficiency impacts volume and headroom more significantly than wattage rating, particularly with low-output amps.
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The Avatar Fane M65 offers clarity with distortion, staying warm without becoming muddy, and provides crisp highs without harshness.
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Critic Reviews

Celestion G12M Greenback 25W Speaker - Darth Phineas

darthphineas.com

The Celestion G12M Greenback is hailed as a quintessential rock and roll speaker, admired for its versatility across genres from hard rock to jazz. With well-balanced tones, it delivers clear cleans and rich, punchy overdrives, making it a favorite among many renowned musicians. The speaker's ability to handle a wide range of pickups and effects, combined with its availability as an Impulse Response, offers great flexibility for both traditional and modern setups. While the choice can be tough among Celestion's lineup, the Greenback's performance makes it a top contender for any guitarist's rig.

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Full Review

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4.5 out of 5

Based on 7 Reviews and 26 Ratings

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1 star

jimmarchi1

41029

over 10 years ago

not bad, not durable

these current production, made in china 25 watt greenbacks will do if you don't have any old G12M's around.... there are plenty of better clones on the market these days, but I got my pair of current production greenbacks for free, so I use 'em in my sealed 2x12 for the time being. They are a little louder and harsher than even the black backed G12M of the 70s and exhibit a nasal upper midrange compression when driven hard that even the 90s UK-made Ms didn't exhibit to this degree (and pulsonic coned M's don't have AT ALL, its a Kurt Mueller cone thing). But overall they are okay. I don't mind them and they have a different flavor than my usual blue/G12H pairing. Keeps life interesting and there are much worse british voiced speakers out there.

UPDATE: I had sold 2 of these and kept one paired with a vintage alnico speaker. I recently blew that one out with 15 to 20 watts of power. A UK greenback can take its full 25 and then some. It doesn't just have a voicecoil rub, it is BLOWN. Low farting/growling sounds only. So that's where the difference between UK and Chinese celestions is. Durability. I docked a star for the poor power handling.

Roles:

Guitarist Bassist Keyboardist

Genres:

Electronic Orchestra Alternative rock

robin_buckingham

325

almost 9 years ago

After 30+ years...

I am simply used to this speaker. I can jump from head to cabs, whatever. I know the difference a head makes because I am always using the same speaker. If I change the speaker as well then I really have no reference. I do like the other Celestions and a couple of other brands, but again, I gotta keep it simple. If someone prefers another speaker, you can call one up on your tone module or they will have it in their cab already.

If you love another speaker, use it. But if you need the AKG-414 of speakers, this is a good starting point.