PMC Twenty5.Sub

Whether you’re savouring your favourite music or movie, the slender twenty5.sub, with its elegant Diamond Black finish, fits discreetly into any room and completes the audiophile experience. This combination of active electronics from PMC’s renowned professional systems, our 400W Class-D ultra-low-distortion amplifiers, proprietary ATL™ and new Laminair™ technologies, and potent 6.5-inch high-excursion bass units, can faithfully reproduce frequencies down to 22Hz, and handle dynamic contrasts from the sonic complexity of a Hollywood blockbuster soundtrack to the filigree detail in a chamber music solo, with maximum resolution and precision-timed bass.

For the finishing touches, intuitive user control over EQ and filters allows for perfect integration of the sub with its listening environment — and with accompanying loudspeakers, because the twenty5.sub also makes an excellent addition to stereo setups. Partnered with the compact twenty5.21 or 22 speakers, the sub forms a powerful system; the twenty5.sub handles the low frequencies, leaving the left and right speakers to concentrate on the mid-range. The result is performance close to that of the three-way twenty5.26, but in a more discreet package.

twenty5 Overview:

The twenty5 series is the culmination of a quarter of a century of research, obsessive design and craft to produce the very finest loudspeakers for home listening. Every element in the design has been considered in order to create finely tuned, transparent speakers capable of revealing music’s subtlest shades and deeply emotional details.

Available in a variety of styles and finishes to suit the décor of any home, modern or traditional, the range hones and refines our established ATL concept with new drivers and Laminair, the result of recent research into the aerodynamics of the transmission line. With a natural, balanced tone and rich, enveloping bass at all levels from whisper-quiet upwards, the surprisingly svelte twenty5 series can provide you with an unequalled listening experience that redefines what you’ve come to expect from high-fidelity performance.

About Laminair

With the launch of the twenty5 series, audio performance has been taken to the next level with the addition of the Laminair aerodynamic vent. Head of Design Oliver Thomas applied aerodynamic principles he had discovered in his previous employment in Formula One to ATL, creating an even smoother, laminar airflow at the exit from the transmission line. ATL designs involve air moving at high speeds and under pressure, and Oliver showed that reducing turbulence and drag at the ATL vent reduces resistance, increases efficiency, eliminates air noise and provides bass with supreme timing and the ultimate dynamic range.

The combination of ATL and Laminair takes audio quality to unparalleled new heights:

• Faster, cleaner bass and higher-definition sound throughout
• Turbulence is eliminated, increasing the efficiency of the ATL
• Removes air noise – only the music remains
• Higher maximum output and bass with supreme timing and dynamics

Launch Press Release:

PMC is launching the twenty5 series to mark the company’s 25th anniversary and embody two and a half decades of cutting-edge research and development in a product range that provides a listening experience that redefines high-fidelity.

The five strong twenty5 series features a multitude of innovations, including a key development that has been achieved as a result of the research into aerodynamics that was originally conductedPMC’s flagship studio monitors, the QB1 – the referenceloudspeaker of the world famous Capitol Studios, LA.  In keeping with all PMC products, the foundation of the twenty5 seriesis Advanced Transmission Line bass loading, which has been radically improved and enhanced with the new aerodynamically designed Laminairventtechnology.

Oliver Thomas, PMC’s head of design, took his knowledge of aerodynamics, gained during his previous employment in Formula One, and applied it to the ATL. As with the aerodynamics of motor racing, the aim is to reduce turbulence and drag, which, in turn, reduces resistance, increases efficiency. The result is the Laminair aerodynamic vent, which creates a smooth laminar airflow as it exits the line. The audible effects are obvious with a faster, higher definition bass with accurate timing and dynamics,without unwanted air noise.

The twenty5 series project is packed with new and highly innovative elements like the new low throwmid-bass drivers, with resin-bound, g-weave™ fine-weave glass fibre cones, produce an substantiallow frequency output when coupled with the ATLand an ultra-vivid midrange clarity. The motor system has been optimised to make it linear and approximately 80 per cent more powerful than the existing twenty series drive units. High frequency response from the already class-leading twenty series Sonolex™ fabric dome tweeter has been further refined through fine-tuning of the geometry and perforationsof its mirror finished stainless steel grille, which improves dispersion for a wider soundstage.

The twenty5 series cabinets, featuring the now familiar 5∘sloping front and rear baffles, lend a contemporary aesthetic to the product. Measurements taken using accelerometers resulted in subtle dimensional adjustments, making them stiffer to reduce panel resonances, and the newly adopted plinth bars with built-in isolation further enhance the stability of the enclosures. Custom-made single piece stainless steel spikes thread through the bar to facilitate simple level adjustment.

Internally the crossovers for each of the models feature PMC’s renowned 24dB filtering to ensure each driver receives its ideal frequency range which increases power handling, reliability and produces an entirely natural,wide dispersion characteristic. The foundation of the crossoveris a military-grade circuit board, withultra-thick pure copper tracks for uninhibited current delivery. The positioning and orientation of hand selected and match components are calculated to eliminate interaction. No detail has been left un-designed, with the back panel of the crossovers made from mirror-finish magnetically inert stainless steel to prevent any adverse interferencewith the components. Connection to the amplifier is via PMC designed binding posts, directly coupled to the crossover for the lowest resistance signal path and ultimate in conductivity.

The range presents models suitable for differing room sizes and comprises two stand mount speakers, the two-way twenty5.21 and twenty5.22; and three floor-standing models, the twenty5.23, twenty5.24 (both two-way) and the three-way twenty5.26, which features the provenPMC 50mmsoft domemidrange. The 27mm tweeter is common to all models, with the 21 and 23 sharing the 5”/140mmlong-throw g-weave bass driver, with a 6 ½”/170mmvariant used in the 22 and 24, and a 7”/177mmversion in the flagship twenty5.26.The wide dispersion characteristics and extremely smooth bass role off makes placement flexible and all models present an easy load to amplifiers.

All speakers within the range are available in a choice of three hand selected and book-matched real wood veneers; Oak, Walnut and Amarone,plus the high gloss Diamond Black finish. Every model comes with an invisible magnet-fixing grille, finished in an exclusive warm black textured PMC cloth.

Peter Thomas, owner of the business, says, “The launch of the twenty5 series is a celebration of 25 years producing the world’s leading professional and domestic loudspeakers.  Our design department and creative teams have made some radical innovations and technological advances in the development of the new range, that have not been seen nor the benefits heard before.” He continues, “I am proud to say that the twenty5 series embodies everything we have learned in our 25 year history, distilled into a range of speakers that take performance to the next level. We know we have created something very special for music lovers worldwide, as they let you feel the music, not simply hear it”