PM4 internal cabinet construction is uniquely designed with a combination of sealed chambers and multiple labyrinth pathways. Developed over our 30 years of experience into resonance elimination and utilization, PM4 employs both a multi-layered constrained damping platform for the main baffle, along with carefully tuned cavity resonances for eigenmode reinforcement and control. In simple terms, the cabinet functions like a finely made violin or guitar, stiff and non-resonant at the point of sound propagation, with tuned in-phase overtones.

Each driver was specifically developed or tuned for the PM4 application. The entire system is purely pistonic; there are no driver break-up modes within 70db of the signal. The extremely stiff Nomex/Kevlar woofer diaphragms are driven by an exclusive dual magnetic structure. Energy storage is kept to a minimum, revealing dynamic contrasts without compression. The midrange diaphragm is an eggshell-thin ceramic material, driven by our unique dynamic magnetic structure. The neodymium magnetic structure of the tweeter energizes a diamond diaphragm. Its entirely in-phase output extends beyond 50Khz with no flexing or bending distortions.

The key to integrating the physical and drive elements resides in the electrical networks. As stated previously, these proprietary high-current circuits are derived directly from Tesseract. Absolute inter-driver phase linearity and low noise floor are maintained regardless of dynamic demand, ensuring image stability and black backgrounds even with the most demanding program material.

• Proprietary Silent Inert Cabinet material/process
• Meticulous tracking of power response, amplitude response, phase response, and transient response for unparalleled ambience retrieval and natural tonality
• Purely pistonic wavefront generation with smooth open lobing characteristics
• Stored energy elimination (SEE) technology produces clear stable imaging and black backgrounds even under heavy SPL demands
• Entirely resistive and finite loading from 10Hz to 250KHz minimizing amplifier perturbation effects
• Advanced light weight driver diaphragm materials minimize energy storage and time-domain distortion
• Each driver individually tested and matched for optimum performance
• Smooth, wide polar response for superlative imaging capabilities
• Moderate impedance characteristic allows for ideal interface with any amplifier
• Crossover circuitry is hard-wired with surface-only conductors, eliminating deleterious sonic effects of printed-circuit boards
• Proprietary all-phase crossover topologies
• Careful crossover control of all magnetic field interaction
• Proprietary magnetics technology increases energy transfer and reduces

Specification

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Our Avalon Acoustics partners

• Audio Therapy

  Newcastle Upon Tyne

  07976 496218

  www.audiotherapyuk.com

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• Choice HiFi

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  020 8392 1959

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• Home Media

  24-26 Union Street, Maidstone, Kent. ME14 1ED

  01622 676703

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• Lotus HiFi

  Walton on Thames, Surrey

  +44 (0)788 785 2513

  http://www.lotushifi.co.uk/

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• Martins Hi-Fi

  85-91 Ber Street, Norwich, Norfolk, NR1 3EY

  01603 627010

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• MidlandAudio Xchange

  The Old Chapel, Forge Lane, Belbroughton, DY9 9TD

  01562 731100

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