- Product Description
- Technical Specification
- Product Reviews
Since the very beginning of the brand, Polyglass has symbolized the very heart of the Focal line-up. The specific character of this range combines advanced technologies, total manufacturing control and unique know-how, continually developed over more than twenty-five years, to reach a sound quality universally recognized as excellent while still remaining affordable.
To arrive at this subtle balance, extreme care must be taken over multiple details, which is why all of the key elements are always manufactured in-house. The Polyglass cone, fully exploits the remarkable properties of glass. The uniform deposit of hollow glass microballs over the while of a cellulose pulp cone greatly increases its rigidity without adding significant weight.
The overall finesse of the Polyglass range comes from a combination of the properties of both the tweeter and woofer, creating a wholly neutral sound with excellent detail in a product whose output is entirely reserved for recreating the emotion of music.
TNA and TN 47 Tweeters
The inverted dome tweeter is a Focal specialty that has been precisely developed to optimize dome/coil coupling in order to transform the electrical energy into an acoustical wave with minimal loss in comparison with a conventional dome. The voice coil diameter, being two thirds of the diameter of the dome itself, supports it evenly on it's entire surface. The concave dome profile also provides a much improved three dimensional radiation, which, during listening, translates into a surprisingly large soundstage.
The Polyglass technology, another Focal specialty, consists of the controlled deposit of hollow silica micro-spheres over a cellulose pulp. The main objective of that technology is to combine cellulose pulp damping properties with glass rigidity at very little increase of the overall mass of the cone. The sound propagation velocity is increased on the hard surface which dramatically improves accuracy and neutrality in the midrange specturm.
The Polyglass series crossovers feature the most refined audiophile components in order to avoid potentially damaging coloration to the products' neutrality. Trebel level controls allow attention to details, to facilitate better integration to all sorts of vehicles and chosen speaker locations
|RMS Power Output (Watts)||250W|
|Peak Power Output (Watts)||500W|
|Woofer Surround||Butyl Rubber|
|Top Mount Depth||5-1/8"|
|Bottom Mount Depth||No Info Available|
|Sealed Box Volume (Cu. Ft.)||No Info Available|
|Ported Box Volume (Cu. Ft.)||0.53-1.06|