Ashdown OBM 1x12" 500w
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- This item is covered for 3 years
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Information
Information
Manufacturer Information
Ashdown
https://www.ashdownmusic.com
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Safety manager:
Algam SAS
Email: contact@algam.net
Address:
Historical Context and Positioning in the Range
Derived from the UK-OBM-500 head, this combo condenses Ashdown's "power and simplicity" approach into a road-ready 1x12 format. Assembled in the UK with a glacier blue finish and anthracite tweed covering, it positions itself as a premium, robust, and ready-to-play solution for bassists who want the Ashdown sound without multiplying gear.Who This Amp Is For
Ideal for discerning musicians, from bassists rehearsing to professionals playing clubs, this combo covers home practice, studio, and small to medium-sized stage performances. Its high output and portable format make it an ally for rock, funk, pop, soul, or modern metal, as well as styles requiring articulation and punch.Technical specifications
| Category | Bass combo | Speaker diameter | 12" |
| Technology | Solid state | Tweeter | 2" |
| Input | instrument jack | EQ | 5 channels |
| Output | XLR DI, Cabinet jack | Headphone output | Jack 6.35 |
| External cabinet output | Yes | Power output | 500 W |
| Effects loop | Yes | Weight | 14 kg |
| Cabinet | Cutaway | Dimensions (mm) | 470 x 606 x 381 |
| Cabinet impedance (Ω) | 8 Ω | ||
Questions frequently asked
Ashdown OBM 1x12" 500W: what power and format does it have?
With 500 W and a 1x12" Sica speaker configuration complemented by a 2" tweeter, this combo delivers a dynamic headroom suitable for rehearsals and small to medium-sized gigs. It weighs 14 kg. The dimensions are 470 x 606 x 381 mm.
Can an active bass be connected to this Ashdown combo?
The 6.35 mm instrument jack input features an active/passive switch. This allows the input level to be adjusted according to the bass's electronics type.
What connectivity is available?
Connectivity includes an XLR DI output, an effects loop, a 6.35 mm headphone jack, and an external speaker output.
Can the speaker cabinet be angled towards the bassist?
The cabinet has a cut corner that enables tilting the speaker towards the player. This setup facilitates a direct foldback without the need for a dedicated monitor speaker.
How is the sound adjusted and what finish is offered?
The 5-band EQ allows precise tone shaping, while the Shape switch applies a scoop contour. The finish combines glacier blue, an anthracite tweed covering, and a Silver Weave grille.



