Fidelix FRT-120K (Pamina) Super Tweeter

A new atmosphere and three-dimensionality in music

The FRT-120K (nicknamed Pamina) is a ribbon-shaped super tweeter developed with a thorough design philosophy to bring out natural overtones and atmosphere. It supports ultra-wide band playback from 4kHz to 120kHz, and ±10dB at 150kHz, dramatically increasing the spread and transparency of the sound field, not only on high-resolution audio sources, but also on analog discs and CDs.

Ribbon diaphragm and transformerless structure

After comparing and measuring many tweeters, the best characteristics were the method with a thin, vertical diaphragm. The entire diaphragm moves back and forth at the same time, so there is no need to increase rigidity, and lightweight films and foils can be used. This structure makes the mass extremely small, dramatically improving responsiveness and frequency characteristics. Furthermore, despite its ribbon-shaped design, it adopts a transformerless structure, completely eliminating signal loss. It brings out the delicate, fast sound that is typical of ribbons.

Carefully selected parts and cabinets

The parts used are carefully selected with sound quality as their top priority. The capacitor is made of PPS film and the coil is made of an air core type with a Litz wire fixed with varnish. The wiring material is made of polyethylene-coated oxygen-free copper wire and non-magnetic material is used for the terminals, which maintains maximum signal purity. The cabinet is made of Bubinga wood, which combines weight and hardness, achieving both an instrument-like texture and suppressing unnecessary resonance. All are choices to achieve a more natural and rich sound.

The appeal of precision pairing and sound

The FRT-120K is delivered with rigorous measurements and character matching before shipping, providing the best pairing. As a result, the playback characteristics on the left and right sides are consistent, making it possible to play music that goes beyond the role of a super tweeter. By adding this tweeter, the overtones of string instruments, the breath of vocals, and even the sound of the halls are vividly reproduced, creating a sense of life and depth in the music.

A machine that evolves the system

The FRT-120K not only brings out the appeal of high-resolution audio sources and SACDs, but also works well in analog disc playback. This is a super tweeter that you should definitely try if you are looking for natural stretch and atmosphere in the high range.