Sweetwater is an Authorized Celestion Dealer. Celestion G12M Greenback 12 inch 25-watt Guitar Speaker - 8 Ohm Bundle. 12 Guitar Speaker, 25W, 8 Ohms, 75Hz-5kHz. Celestion speakers are a staple of modern music. Starting in the 1960s, they helped define generations of guitar tone.The Celestion G12M Greenback 12 guitar speaker gives you classic British tone with a warm body and distinctive growl. The first Celestion speaker to feature a ceramic magnet structure, the G12M Greenback gives you a loud and assertive voice - perfect when paired with a powerhouse tube amp. If you want that timeless Celestion sound, this is the speaker for you! Put a classic British-sounding speaker in your guitar amplifier, with the Celestion G12M Greenback 12 guitar speaker! Celestion G12M Greenback 12 Guitar Speaker Features at a Glance. A 12 guitar speaker with classic British sound. Ceramic magnet gives you extra punch and bite. Great for all musical styles. Give your amp a classic British sound with the Celestion G12M Greenback speaker! G12M Greenback 12 inch 25-watt Guitar Speaker - 8 Ohm Specifications. More than 30 years in business. Free tech support from audio experts. This item is in the category "Musical Instruments & Gear\Guitars & Basses\Guitar Amplifiers". The seller is "sweetwatersound" and is located in this country: US. This item can be shipped to United States, Canada.