Introduction - PMC twotwo.5 User Manual

Introduction

Thank you for choosing PMC twotwo series active reference loudspeakers. This guide provides
installation and operating instructions for the twotwo.5, twotwo.6 and twotwo.8 monitors, which
have been specifically designed to enable use in either vertical or horizontal orientations without
compromising the stereo imaging or tonal accuracy.
These monitors build upon PMC's world-class design pedigree, combining the finest drivers
available with the unique (Advanced Transmission Line) bass loading principle, sophisticated
TM
Advanced Transmission Line
Class-D amplification and ultra-precise DSP control.
PMC's unique technology uses contemporary materials to provide optimised absorption of
TM
Advanced Transmission Line
unwanted midrange energy within the cabinet, while extending bass output significantly with
negligible harmonic distortion. Please note that the twotwo cabinets are handed, meaning that
the tweeter is offset to one side of the bass driver. In normal use the monitors should be arranged
with the tweeters on the inside edge nearest the listening position.
The drivers employed in the twotwo monitors are bespoke PMC designs using natural materials.
The newly developed 27mm precision soft-dome tweeter delivers ultra-high resolution and a
neutral balance. Its perforated acoustic lens extends the response beyond 20kHz and controls
dispersion to ensure perfect integration through the crossover region. The bass driver uses an
ultra-light and ultra-stiff doped-paper cone to deliver unparalleled transient response and
untainted mid-range.
The electronics built into each cabinet provide two channels of ultra-low distortion Class-D power
amplification, with a DSP-based crossover providing perfect driver optimisation and integration.
A non-aggressive protection system based on modelled excursion limiting is also implemented in
the DSP, and the twotwo badge changes colour to red when the protection system is working.
Balanced and unbalanced analogue, and AES3 digital inputs are accepted.
'PMC's twotwo series is designed and hand-built in Britain, by nice people who care and who love audio'