'With the new se editions we have improved the performance of the critically acclaimed IB2, MB2 and BB5 models even further, so the most discerning of audiophiles can delve deeper into the heart of the music and experience the purest essence of the artist’s intentions, capturing that moment in time from the studio.'
A PMC transmission line design utilises sophisticated cabinet construction, PMC designed drive units and patented absorption materials and techniques. The benefits are enormous compared to the relatively simple sealed and ported models available elsewhere.
The bass driver is placed at one end of a long tunnel (the transmission line), which is heavily damped with absorbent acoustic material. This material is specified to absorb the upper bass and higher frequencies that radiate from the rear of the bass driver. The lowest frequencies, which remain in phase, then emerge from the large vent at the end of the line, which essentially acts as a second driver.
One advantage to this approach is that the air pressure loading the main driver is maintained, thus controlling the driver over a wide frequency range, which in turn significantly reduces distortion. A spin-off from the lack of distortion is that the upper bass and midrange detail is not masked by harmonic distortion residing in the very low frequencies. The result is PMC’s characteristic transparent midrange and fast attacking bass notes, all reproduced with outstanding clarity.
A further advantage of the transmission line approach is a cabinet that produces a higher volume and greater bass extension than a ported or sealed design of a similar size, even if identical drivers are used. Moreover, as the loading on the main driver is maintained at all volumes, the frequency response also remains consistent regardless of listening level.
Casual late night listening or analytical studio sessions can be conducted without the need for high volumes to achieve maximum bass response - a characteristic that is especially suited to both the home enthusiast and recording professional alike.
The MB is the mid-sized model in the SE range and delivers all the emotion and clarity of the IB2 with the ability to resolve even greater bass detail; it can produce low-frequency audio down to a staggering 20Hz with ease. The radically engineered Radial™ bass unit with its immense exo-skeleton offers excellent physical and thermal stability; the cone has a perfect rigid structure, permitting enormous excursions, and the exposed fins act as a heat sink, keeping the coil cool at all times.
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