PMC IB1S-A MkIILoudspeaker manufacturer PMC has released a MkII version of its three-way Ibis-A ‘activated’ reference monitor, together with a horizontally orientated, low-profile centre channel model, the IB1S‑A‑CII, for use in 5.1 surround configurations.

The Mark II incorporates design elements established during the production of the IB2S-A active loudspeaker (2011), as well as feedback from the broadcast, outside broadcast, postproduction, mastering and music recording markets. As with the MkI, the IIB1S-AII features PMC’s Advanced Transmission Line (ATL) technology, the company’s proprietary low-frequency carbon-fibre and Nomex 10-inch flat piston driver, and the isolated three-inch mid-range driver and 27mm soft-dome high-frequency driver from the original IB1S-A, as well as precision, hand-assembled 24dB/octave crossovers. The amplification is taken care of by PMC’s DS-001 class-D power amplifier, housed in the vented plug-and-play DS-Module-001, which fits to the rear of the cabinet. The DS-001 delivers 400W of power into the 4Ω IB1S-AII.

The IB1S-AII adds the newly engineered absorptive foam lining for the ATL that was used in the IB2S-A. This further reduces harmonic distortion in the drivers and results in a higher‑definition, more clearly defined bass and a more transparent mid-range with reduced colouration from the low frequencies. And as with the IB2S-A, the redesigned cabinet for the IB1S-AII also features extra internal bracing to minimise cabinet crosstalk and resonance.

The SB100-A Active low-frequency unit may be added to the system if required.

With the same sonic characteristics and low-frequency response as the bass driver from the IB1S-A, the SB100-A provides a balanced means of monitoring the ‘point one’ bass channel in a surround set-up. A compact, horizontally orientated version of the speaker, the IB1S‑A‑CII, is also available for use as a dedicated Centre channel speaker in 5.1 arrays.

Hand-assembled at the company’s UK headquarters, the IB1S-AII is ready to ship.


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