The CL08TL6 project is a multiple transmission line applied to a 3FE25 Full-range driver from Faital-Pro. Compared to my previous projects it is more compact, simpler, more rigid and with less spurious vibrations.
The dimensions are 260 x 260 x 1100 mm and can mount drivers up to 130 mm (5”). The footprint is similar to a floorstanding speaker.
The front emission is direct, therefore directional.
The rear emission is applied to a compression chamber on whose lower side are glued 6 rigid PVC waveguides folded on themselves.
The following is a list of the main differences compared to a standard transmission line with a single waveguide.
- The design is simple, it is not necessary to exactly match the resonances of the driver and the waveguide, the cabinet is neutral with respect to the driver used and the listening room. The length of the waveguides is calculated on the basis of the speed of sound in air, the electroacoustic parameters of the driver are not necessary.
- The 6 resonance frequencies (53.9 - 48.0 - 42.8 - 38.1 - 33.9 - 30.2 Hz) of the waveguides are evenly distributed over an octave with partially overlapping peaks, no sound-absorbing material is used.
- The 6 waveguides emit secondary wavefronts that are coherent and in antiphase with the frontal emission of the driver. The secondary fronts are delayed (4.6 - 5.2 - 5.8 - 6.6 - 7.4 - 8.3 msec) and emitted at different points in the space. Multiple emission increases the amplitude of the sound image, optimizes interaction with the listening environment and decreases listening fatigue.
- The support can oscillate at subsonic frequencies, isolating the compression chamber from the floor in the audible audio range.
- There is no simulation program capable of calculating the behavior of the CL08TL6 project, or rather, I do not have the time to study and test it.
On the same cabinet I also mounted 10 cm CL10TL6 (Ciare HX101) and 13 cm CL13TL6 (Ciare HX135) drivers that I had available. The Faital-Pro 3FE25 driver is fun to listen to and returns a wide and detailed sound image. With the Ciare HX101 the bass improves and the distortion decreases, finally with the HX135 you have a further reinforcement on the bass and the distortion decreases even more.
Thanks for your attention.
link:
https://www.claudiogandolfi.it
https://www.claudiogandolfi.it/cl08tl6.html
https://www.claudiogandolfi.it/cl08tl6.html#10
https://www.claudiogandolfi.it/cl08tl6.html#13
The dimensions are 260 x 260 x 1100 mm and can mount drivers up to 130 mm (5”). The footprint is similar to a floorstanding speaker.
The front emission is direct, therefore directional.
The rear emission is applied to a compression chamber on whose lower side are glued 6 rigid PVC waveguides folded on themselves.
The following is a list of the main differences compared to a standard transmission line with a single waveguide.
- The design is simple, it is not necessary to exactly match the resonances of the driver and the waveguide, the cabinet is neutral with respect to the driver used and the listening room. The length of the waveguides is calculated on the basis of the speed of sound in air, the electroacoustic parameters of the driver are not necessary.
- The 6 resonance frequencies (53.9 - 48.0 - 42.8 - 38.1 - 33.9 - 30.2 Hz) of the waveguides are evenly distributed over an octave with partially overlapping peaks, no sound-absorbing material is used.
- The 6 waveguides emit secondary wavefronts that are coherent and in antiphase with the frontal emission of the driver. The secondary fronts are delayed (4.6 - 5.2 - 5.8 - 6.6 - 7.4 - 8.3 msec) and emitted at different points in the space. Multiple emission increases the amplitude of the sound image, optimizes interaction with the listening environment and decreases listening fatigue.
- The support can oscillate at subsonic frequencies, isolating the compression chamber from the floor in the audible audio range.
- There is no simulation program capable of calculating the behavior of the CL08TL6 project, or rather, I do not have the time to study and test it.
On the same cabinet I also mounted 10 cm CL10TL6 (Ciare HX101) and 13 cm CL13TL6 (Ciare HX135) drivers that I had available. The Faital-Pro 3FE25 driver is fun to listen to and returns a wide and detailed sound image. With the Ciare HX101 the bass improves and the distortion decreases, finally with the HX135 you have a further reinforcement on the bass and the distortion decreases even more.
Thanks for your attention.
link:
https://www.claudiogandolfi.it
https://www.claudiogandolfi.it/cl08tl6.html
https://www.claudiogandolfi.it/cl08tl6.html#10
https://www.claudiogandolfi.it/cl08tl6.html#13
