Ashdown Rootmaster UK-RBM-115T 1x15" 300W Bass Speaker Cabinet - Charcoal Tweed

Handbuilt in the UK, the Guitar Center Exclusive Ashdown Rootmaster Bass Magnifier UK-RBM-115T 1x15" bass speaker cabinet combines a Sica NEO 15" driver with an adjustable tweeter in a compact 300W design. The neodymium driver provides a strong low-frequency foundation with clear, articulate response, while the tweeter lets you tailor the cabinet's high-frequency character. Ply construction keeps the cabinet weight to 37.5 lb. for easier transport between rehearsals, sessions and performances. Genuine Neutrik speakON/1/4" combo connectivity and a Charcoal Tweed finish with Silver Weave grille cloth complete this UK-built bass cabinet.

Sica NEO 15" Driver for Depth and Definition

At the heart of the UK-RBM-115T is a Sica NEO 15" speaker designed to provide a strong low-frequency foundation while maintaining definition across the instrument's range. Its lightweight neodymium magnet helps reduce overall cabinet weight, contributing to a 37.5 lb. design that remains manageable for transport. Rated for 300W at 8 ohms, the UK-RBM-115T provides a responsive foundation for a range of bass tones and playing approaches while retaining the portability that distinguishes the UK-RBM Series.

Adjustable Tweeter Provides High-Frequency Flexibility

An integrated high-frequency tweeter complements the Sica NEO 15" driver with additional definition and presence, while a three-position switch provides direct control over its contribution to the cabinet's sound. Choose the Hi setting for greater high-frequency detail, Low for a more restrained response or Off to hear the 15" driver without the tweeter. This simple adjustment lets bassists tailor the cabinet's high-frequency response to suit different instruments, sounds and performance settings.

UK-Built Construction for a Portable Bass Rig

Built in the UK from ply, the UK-RBM-115T combines a manageable 37.5 lb. weight with a portable format for easier transport between sessions and performances. Genuine Neutrik speakON/1/4" combo jacks provide versatile connectivity, while the Charcoal Tweed finish, Silver Weave grille cloth and Ashdown's classic double-wing badge give the cabinet a distinctive appearance. Available as a Guitar Center Exclusive, the 300W UK-RBM-115T works as a standalone bass cabinet or as part of a modular UK-RBM rig.

Ashdown Amplification Arrives at Guitar Center

Since 1997, Ashdown has built its reputation on powerful, road-ready amplification trusted by bassists on stages around the world. From its iconic Bass Magnifier amps and bass cabinets to pedals, guitar amplification and artist-driven designs, the family-run company has remained dedicated to giving players distinctive tone and dependable performance while renewing its commitment to UK-built craftsmanship. Guitar Center is proud to partner with Ashdown, bringing the brand’s celebrated amplification legacy to musicians nationwide.