ACAPELLA ION TW 1S (Ionic Tweeter)
...I was surprised that the model CD-8 was singled out, because it's really just a straight column. For interesting designs, the CD-9 definitely has it beaten, with it's L-shaped pedestal and angled woofer baffle.
80sKid:
Cool additions to the thread! Those Kenwood's are surreal. When I started this thread, my bias was for unique and interesting "visual" designs, but I soon realized that the thread could also go the way of unique and interesting "technical" designs as well. I looked up the CD-8 after someone added it to the thread, and it has some interesting tech in it's design. You are right about the CD-9, visually it is the TOTL.
Along the unique and interesting tech design side, here is a "tweeter" that I have mentioned on other threads...The Acapella Ionic Tweeter (link shown below, click English translation button)
http://www.acapella.de/german/
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The Acapella ion tweeter "Ion TW 1 S" is a perfected and sophisticated loudspeaker chassis, whose exceptional performance and qualities can only be enjoyed completely if used properly. It was designed to reproduce the harmonics of the music as detailed as possible. To reach this goal, a design with the smallest possible mass had to be developed. Relative to its function the Acapella ion tweeter has no mass! To carry out this project, a very unusual kind of design had to be created.
High voltage within the unit produces a constant arc. This arc is modulated with the musical signal (flame oscillates with the time of the music). This is the reason why the number of electrons within the arc varies. A larger or smaller amount of electrons requires similar space. Due to this variable need of space the surrounding air molecules have to dodge the more or less quickly. This evasive action or bumping of the air molecules generates over-, resp. underpressure and, therefore, sound. In this way, the Acapella ion tweeter is able to reproduce sound without membrane and without mass
Regarding transient capabilities and phase stiffness, the obtained sound quality cannot be realised by using conventional tweeters. Comparing the ion tweeter with other tweeter systems, its unobstrusive sound image will attract you. This kind of reproduction is to be attributed to the lack of harmonic and transient distortions.
Technical data
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Sensitivity (aktive Tweeter): 1,5Volt / 0 dB
Impedance: 600 Ohm
Sound pressure level: max. 110 dB - 1 m / 1ms
Slope Input filter: approx. 12dB/octave
Frequency response: 5kHz - >50kHz (variable crossover frequencies )
Mains voltage: 234 Volt / 50 Hz Standard
Optional 110 -, 117 -, 227 Volt / 50 - 60 Hz
Dimensions H x W x D: 150 x 300 x 260 mm
Weight: 15 kg