Yamaha’s Exclusive Advanced PMD Cone Woofers for Natural Sound Reproduction

The Advanced PMD (Polymer-injected Mica Diaphragm) cones are 15% lighter than previous types, thanks to the use of a low specific gravity material called PMP (Poly- Menthyl-Penten) that provides faster response (speed of sound rise and fall). Internal loss has been increased by 43%, lessening unwanted resonances to achieve the smooth frequency response that results in natural-sounding vocals. The proportion of base resin (powdered mica) and filler (talc) was determined by extensive listening tests, also in order to achieve natural vocals. The suspension (spider material and shape) was also re-designed for better bass response and wider dynamic range. Finally, the pearl white external appearance provides an impression of fresh, clean sound.

3cm Aluminum Dome Tweeters with DCDiaphragm ™ and New Frame

The high-performance tweeter features a dome made of an aluminum, with a DCDiaphragm ™ that integrates the diaphragm and voice coil. The magnet is an new extrapowerful neodymium type. As a result, the tweeter is extremely light to minimize sound loss, yet is highly durable. It is capable of reproduction all the way up to 100kHz, which is exceptional performance for a 3cm dome tweeter. Highs are crisp and clear even at high power levels. The tweeter frame utilizes a new design that provides a better connection to the diaphragm edge to prevent frequency response degradation due to reflected waves. The aperture angle of the defuser has been increased for more natural transmission of the sound from the diaphragm. In addition, smaller size and higher stiffness result in better sound image localization and depth reproduction.

High-Performance Crossover Networks

The crossover networks use highperformance solen capacitors with extremely low loss characteristics, ensuring fast response.

Innovative Triple Cross-Bracing

The cabinet has triple cross-bracing with a unique wedge structure (patent pending). Rbeveling reduces diffraction effects. This construction also increases strength for less unwanted vibration.

Three-Way Mitered Construction Cabinet with Chamfered Baffle

Yamaha speakers have employed 45° mitered-joint construction at the cabinet corners and baffle/body joints for many years. On the 325 A-PMD Series, mitered construction is also used for the back panel, improving the tightness of the joints so the entire cabinet behaves as a single body. This improves low frequency response and reduces unwanted vibration. In addition, the chamfered baffle acts to reduce sound diffraction.

Luxurious Real Wood Finish

All 325 A-PMD Series cabinets have surfaces of high quality wood and are given a luxurious and protective urethane/polyester coating.

Gold-Plated Brass- Extruded Terminals

Even the terminals of these speakers are high quality, being made of brass and gold-plated for higher signal conductivity.

RRP: $539