Bookshelf Speakers — PMC MB3-A

The MB3-A is a large active bookshelf monitor from PMC, built with a substantial multi-amplifier power stage for professional-grade output. Its scale goes well beyond a typical domestic bookshelf speaker.

Position in line

It sits below the BB5-A SE in PMC's active monitor range, near the IB2S-AII in general positioning.

Key specs that matter

Rated response is 20 Hz to 25 kHz, a full-range figure for a stand-mount design. Internal amplification totals 275 + 550 + 1200 W across three bands, a very high figure for a bookshelf-format cabinet. At 87.0 x 38.0 x 53.5 cm and 49 kg it is studio-monitor scale, substantial for a category most buyers associate with a compact stand-mount design.

Sound and use context

It is aimed at a studio or a large room where a stand-mount monitor must cover the full frequency range.

Pairing

As an active design, no external power amplifier is used - a line-level source feeds the internal amplification directly.

Alternatives

The twenty5.22i is a smaller, more domestically-scaled bookshelf model in PMC's range for a lower amplification budget.