Upgrade to a World-Class PMC Main Monitor System

If you’re considering upgrading to monitoring that delivers stunning resolution along with massive low-frequency headroom, the dual-cabinet PMC IB2S XBD-AII is an ideal solution. Specifically designed for professional reference monitoring and mastering applications, this world-class monitor system enhances PMC’s IB2S-AII midfield monitor with an additional 10"-driver XBD bass cabinet that increases LF headroom by 3dB, delivering a smoother response and the ability to drive even larger rooms.

The IB2S XBD-AII provides analog and AES digital inputs and delivers a ruler-flat frequency response down to 20Hz. Normally arranged in a sleek vertical column, the twin cabinets can also be positioned side-by-side, offering greater placement flexibility to suit a variety of studio environments.

Heart of the System: The IB2S-AII

The PMC IB2S-AII is a 3-way active reference monitor that offers discerning recording engineers all the attributes of PMC’s large ATL main monitors in a more compact form factor designed for midfield monitoring in midsized rooms. It is perfectly suited for high-end reference monitoring in both stereo and surround formats.

This DSP-controlled, Class-D-powered monitor employs PMC’s Advanced Transmission Line (ATL) bass-loading technology to deliver smoothly controlled, high-resolution low-frequency performance. The IB2S-AII features PMC’s bespoke handcrafted drivers, including a 10" carbon-fiber/Nomex piston woofer, a 75mm fabric-dome midrange, and a 34mm soft-dome tweeter, all driven by custom, ultra-low-distortion, rack-mountable triamplification.

Engineers trust PMC monitors to deliver honest, natural sound session after session, maintaining composure at any volume. A major contributor to this performance is PMC’s proprietary ATL technology.

Advanced Transmission Line Technology Delivers Cleaner, Deeper Bass

Since their first professional studio main monitor designs were adopted by the music, broadcast, and post-production industries in the early 1990s, PMC has been renowned for its proprietary Advanced Transmission Line (ATL) technology. This design absorbs unwanted rear-radiated frequencies from the low-frequency driver, allowing only the deepest bass to emerge from a front-baffle vent.

The result is extended bass response with reduced harmonic distortion, preserving clarity in the upper bass and midrange. ATL technology enables deeper bass and higher output from smaller cabinets, while maintaining a rich, balanced sound at any listening level. Because bass extension remains consistent regardless of volume, low frequencies stay well-defined even at quieter monitoring levels.

Laminair Aerodynamic Vent for Superior Performance

PMC’s ATL system moves under-pressure air at high speeds, making drag and turbulence reduction essential for maximum efficiency and minimal noise. PMC’s Laminair vent uses aerodynamic principles inspired by high-performance motorsport engineering to create smooth laminar airflow at the transmission line outlet.

The combination of ATL and Laminair technologies results in superior bass timing, an ultra-wide dynamic range, and an exceptionally natural sound character that remains composed at any volume.

Mixes That Translate

Midrange clarity is the heart of any great mix and remains critical regardless of the playback system. Without it, engineers can experience listening fatigue and mixes that fail to translate outside the studio.

By improving bass response and eliminating port noise and problematic frequencies, PMC’s ATL and Laminair technologies preserve midrange detail. This makes it easier to place vocals and solo instruments accurately in a mix, ensuring reliable translation across real-world listening environments.

What PMC says...

If you are looking for monitoring that combines phenomenal resolution with increased low-frequency headroom, the twin-cabinet IB2S XBD-AII delivers a truly reference-grade solution. Designed for high-end monitoring and mastering environments, this system integrates an additional XBD bass cabinet to provide +3dB of LF headroom, resulting in smoother low-end response and the ability to confidently drive larger control rooms. Analogue and AES digital inputs are supported, with a flat frequency response extending down to 20Hz.

For added installation flexibility, the IB2S XBD-AII houses its active electronics separately from the cabinet, simplifying soffit mounting and system control. The two cabinets can be configured vertically as a single column or positioned side-by-side, allowing the system to adapt easily to different studio layouts.

Both cabinets employ identical Advanced Transmission Line (ATL™) designs to ensure accurate, controlled bass reproduction at all listening levels. The system uses the same 10-inch carbon-fibre/Nomex™ piston drivers found in PMC’s flagship QB1 monitors, complemented by a 34mm soft-dome tweeter and a hand-built 75mm fabric-dome midrange driver. PMC’s ultra-clean amplification provides exceptional headroom, supplying 275W to the HF, 550W to the MF, and 2400W to the LF drivers.

Operational control is handled via an RJ45-connected remote, offering three user presets, HF and LF shelving filters, ±8dB input trim, and adjustable analogue input sensitivity from +4dB to +16dB for seamless system integration.

At the core of the IB2S XBD-AII’s performance is PMC’s Advanced Transmission Line (ATL™) bass-loading technology. This proven design harnesses the energy from the bass driver more efficiently than conventional sealed or ported enclosures, delivering the deep, controlled low-frequency response that defines PMC’s natural and highly realistic sound.