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Celestion
Celestion 25W Heritage G12M (55) 12" 15ohm Speaker
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Want to Click and Collect or try items at our Guildford Store?
The store is open 10am - 6pm Monday to Saturday and 11am - 5pm Sunday and bank holidays.
The stock information shows the quantity of units that are available to purchase at the Guildford store and the quantity of units that are available at our off-site Guildford warehouse. These stock levels are updated in real time.
Our Click and Collect service is available at our Guildford store from 10am - 6pm Monday to Saturday, and 11am - 5pm on Sunday. You can either choose Click and Collect as your delivery option online or, during store opening hours, call our sales team on 01483 456777 for assistance with placing your order.
If you have placed your order online, you will receive a confirmation email of your order and a separate follow-up text or email to confirm when your item is ready for collection.
Please do not come to the store before you have received the follow-up message, as your order may not yet be ready at the store.
If the only available stock is in our off-site warehouse it can be brought to the store location for you to try - you just need to contact the store within opening hours. Please note any requests received after 3.30pm will not arrive at the store until the following morning.
Please be aware that stock availability can change quickly both online and in-store, so we would always recommend placing your Click and Collect order as soon as possible to reserve your item.
SKU: CEL-T1511
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Product Description
The Celestion Heritage G12M (55) 12" 15 Ohm speaker is a meticulous recreation of one of the most iconic rock drivers of the late 60s. Featuring the sought-after 55c/s bass cone, it delivers thick, syrupy tones with a deep, growling low end, complex mids and a sweetly detailed top. If you are chasing classic Hendrix-style crunch, towering power chords and that unmistakable vintage British roar, this is the speaker to drop into your favourite cab.
Built to capture the feel, response and character of the original greenbacks, the Heritage G12M (55) excels in a 4x12 where its 25-watt rating and high sensitivity combine for huge projection and touch-sensitive dynamics. From classic rock and blues to heavier vintage-voiced tones, it rewards expressive playing and lets your amp breathe with authentic late 60s attitude.
Classic Late 60s Rock Voice
The Heritage G12M (55) nails the unmistakable sound of late 60s British rock, with a tone that feels instantly familiar under the fingers. Its thick, vocal midrange and chewy overdrive character sit perfectly in a mix, making it ideal for players who want their rig to evoke the feel of classic recordings.
55c/s Bass Cone Authority
Fitted with Celestion's 55c/s bass cone, this model offers a deeper, more authoritative low end compared to standard cones. The result is a growling, weighty bottom that keeps big chords tight and powerful, while still leaving plenty of room for your amp's natural character to shine through.
Expressive Dynamics and Detail
With a sensitivity of 100 dB and a finely detailed top end, the G12M (55) responds beautifully to picking nuance and guitar volume changes. Clean tones shimmer with vintage warmth, while driven sounds bloom into harmonically rich sustain that encourages expressive, dynamic playing.
Authentic Heritage Construction
Using a pressed steel chassis, ceramic magnet and a 1.75" voice coil, the Heritage G12M (55) is built in line with classic Celestion recipes. This traditional construction helps deliver the familiar feel and response players expect from a true vintage-inspired speaker, making it a perfect choice for period-correct restorations or high-end custom builds.
Features
- Authentic Late 60s Tonal Recreation - Faithfully captures the sound and feel of classic G12M speakers, giving you the unmistakable mojo of legendary late 60s rock tones in a brand new, reliable unit.
- 55c/s Bass Cone for Deep Low End - The dedicated bass cone delivers a thick, syrupy tone with a deep, growling back end that keeps riffs and power chords full and authoritative without becoming flabby.
- High Sensitivity for Big Projection - With a 100 dB sensitivity rating, this speaker offers excellent efficiency, meaning your amp feels louder, more immediate and more responsive on stage or in the studio.
- Vintage-Style Ceramic Magnet and Steel Chassis - The combination of a ceramic magnet and pressed steel frame mirrors classic Celestion designs, providing the punchy attack, tight response and reliability that players associate with heritage British speakers.
Specifications
General
- Model: Celestion Heritage G12M (55)
- Nominal Diameter: 305mm / 12in
- Power Rating: 25W
- Rated Impedance: 15Ω
- Sensitivity: 100dB
- Frequency Range: 55Hz to 5000Hz
- Resonance Frequency, Fs: 55Hz
- DC Resistance, Re: 12.11Ω
Construction
- Chassis Type: Pressed steel
- Magnet Type: Ceramic
- Magnet Weight: 1.42kg / 50oz
- Voice Coil Diameter: 1.75in / 44.5mm
Mounting Information
- Cut-out Diameter: 283mm / 11.1in
- Overall Diameter: 309mm / 12.2in
- Magnet Structure Diameter: 168mm / 6.6in
- Mounting Hole PCD: 297mm / 11.7in
- Number of Mounting Holes: 4
- Overall Depth: 135mm / 5.3in
- Unit Weight: 4.7kg / 10.4lb
