Essential information know about the MB58R 121 P speaker
- 1x12-inch ceramic woofer + piezo tweeter for a combination of warm low-mids and controlled brightness.
- 300 W RMS into 8 Ohms: compatible with most bass heads and easy to stack.
- Bass reflex design and 3.5 kHz crossover: tight bass, smooth transition to the high end.
- Compact size and weighing only 28.8 lbs: easy to transport without sacrificing projection.
Historical context and positioning in the range
Part of the MB line, the MB58R 121 P is part of a generation of cabinets designed to optimize the weight/power ratio and meet the demands of today's bassists. This 1x12 with piezo tweeter is positioned as a versatile speaker, designed for those who want a compact format capable of covering rehearsals, studios, and small to medium-sized stages.
Who is this amp for?
Ideal for bassists of all levels, the MB58R 121 P is suitable for a variety of contexts: working at home at low volume, studio sessions where a precise response is required, rehearsals, and live performances requiring a lightweight but defined speaker. Its versatile 12-inch speaker and piezo tweeter make it equally at home with pop, rock, funk, soul, jazz, and slap bass, as well as with aggressive pick playing.
Features and New Features
The 12-inch ceramic magnet speaker delivers solid bass and punchy mids, while the piezo tweeter adds presence and air to the harmonics. The
3.5 kHz crossover ensures smooth distribution between the transducers. The bass reflex design extends the response at the lower end of the spectrum without any drag. With its 300 W RMS power handling and 8 Ohm profile, it pairs easily with a wide range of amplifier heads and can be stacked to increase stage volume.
Sound
The 12-inch ceramic driver offers a typical balance between the articulation of a 10-inch driver and the foundation of a 15-inch driver: tight bass, meaty low-mids, and natural projection. The piezo tweeter adds definition to attacks, useful for slap, modern sounds, and new strings, while remaining discreet for rounder tones. The dynamics are responsive, with plenty of headroom to remain clear at sustained volumes.
Technical Specifications
Transducers
- 1 x 12-inch ceramic speaker
- 1 x piezo tweeter
Performance
- Power: 300 W RMS
- Impedance: 8 Ohms
- Frequency response: 40 Hz - 18 kHz
- Passive crossover: 3.5 kHz
Design
- Type: bass reflex
- Color: black
Dimensions and weight
- Dimensions (W x H x D): 578 x 390 x 470 mm
- Weight: 13.2 kg
Included accessories
- No accessories mentioned by the supplier
en 
