Check the listing for details. Celestion G12H-150 Redback 150W 12 in. Guitar Speaker 16 Ohm. Condition: New. Listed at 164.95 USD. The Celestion G12H-150 Redback has been created for players who are looking for extreme power handling but refuse to compromise on great tone. Rated at a gargantuan 150-watts, the Redback is constructed with a supersized 2-inch voice coil and features the heaviest G12 magnet. The result is a guitar speaker that sounds 100% Celestion in character, yet is primed to withstand a pummelling from a 100-watt head all by itself, and still come back for more.The Redback proves that you no longer need to choose between power and tone. With a tight, well-controlled low end, detailed midrange and more relaxed treble, Celestion’s engineering expertise has produced a truly high power guitar speaker that can still deliver balance, responsiveness and superb playability, with muscular ease.