Swans’ classic M1 speaker was first released in 1998, designed by Swans’s chief designer Frank Hale. As the speaker was designed for monitoring purpose, M1 adopted Swans’ lastest R1 isodynamic ribbon tweeter and the premium F5 muti-layered mid/bass driver. M1 was well expected and received much attention even before it was available to the market. M1 did not let people down indeed. From technical measurements to sound performance, M1 stood out from other speakers of its kind and recived high appraisals from audiphiles and media. M1 has been popular since then, and it is still on market today.
Of course, the new M1 is different from the first edition, especially the appearance. The old M1 uses a traditional square cabinet with straight lines. The new M1 is some modern traits-well polished solid wood board, rounded edges, leather panel.
When it comes to drivers, M1 still uses the combination of R1 isodynamic ribbon tweeter and F5 multi-layer mid/bass. Isodynamic ribbon tweeter, compared to traditional soft-dome tweeters, has a lighter diaphram, which creates wider frequency range and faster transient reponse. The R1 sodynamic ribbon tweeter, for example, utilizes the thin Kapton material for the diaphram. As a result, the whole vibration system weights less than one tenths of a typical tweeter, as a result, it’s sound is clear and transparent, and it can reach up to 40kHz, well suitable for modern wide range music source.
R1’s sound reproduction technology offers wider horizontal radiation but less vertical diffraction to ceiling and floors, which is ideal for creating sound stage, and it is more adaptable for various listening enviornments. In addition, R1 isodynamic rebbon tweeter has a valuable feature that its impedance curve is almost flat, in other words, it is basically a consistent resistance. So to speak, for designing frequency divider, the theoritical expectation will match the experimental result.
The F5 mid/bass driver is unusual. Its’ diaphram uses a mix of bulletproof material Kevlar and natural fibre. It features with good stiffness and damping, which effectively reduces splitted vibration disortion on driver cone, but provides balanced and natural sound.
With the enclosed dual-magnetic circut system and Swans’ unique symmetrical magnetic field driving technology, F5 remains low distortion even at high level outputs. In order to improve the phase characteristic of frequency response, a cone-shape plug was placed in the center of the diaphram. F5 has a resonance frequency of 52 Hz and Q value of 0.33, perfect for inverted tube box design. So once installed in the cabinet, the entire system has goood bass response. M1’s lower limit is 53 Hz, which is pretty good for its kind.