Hi-End HiVi Swans S200A Stereo System Review: Elegance of a Piano. Page 5
[04/24/2007 05:57 PM | Multimedia]
by Sergey Samarin
Today we are going to invite you to get acquainted with a very interesting multimedia acoustic stereo system – Swans S200A from HiVi Company. This is the first truly high-end acoustic system we are looking at on our site, so we will go deep into technical details regarding its design and operation.
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The system is equipped with Hi-End neodymium tweeters with 28mm membranes. The tweeter dome is made of reinforced polymer. The high-frequency driver is placed into isolated resonance-free casing, which protects it against woofer’s influences. The nominal DC impedance of the tweeter is 6Ohm, own resonance frequency – 1350Hz. The tweeter is screwed to the metallic pad that serves as a megaphone.
You can see distortions because of the non-optimal acoustic design of the tweeter dome.
The graph above shows very unfavorable amplitude-frequency characteristic (AFC) for filtering; at 30 degree angle the AFC improves a little bit – it may result from the non-optimal acoustic design of the tweeter dome. As a result, the manufacturer had to use a third order filter with Q-factor of about 1, which also increases the distortions.
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