How to connect multiple small speakers to develop high-fidelity speakers
There is an interesting article in "Popular Electronics" in January 1961-"SweetSixteen" by Jim Kyle. Subsequently, Kyle published a second article in April 1961, titled "SweeterWithATweeter". You can find some discussions about the original article on the AudioKarma forum.
The basic idea in Kyle's article is to use a series of small speakers connected into one entity to develop high-fidelity speakers. Each speaker carries only a small amount of power, and uses a combination of 16 interconnected speakers, all of which are connected with the same voltage phase and the direction of deflection of the speaker cone. The result is that the speaker system can carry high power without distortion. In addition, the cabinet for installing the speakers can be made very shallow, which can be an advantage if the space in the living room is limited.
In the article, some suggested wiring diagrams are provided, but one possibility is ignored (Figure 1)
Figure 1 16 speakers can be interconnected so that their composite impedance at the two terminals will be the same as the impedance of a single speaker itself.
For example, if each speaker presents a voice coil impedance of 8Ω, a composite speaker composed of 16 speakers will also present the same 8Ω.
In addition, I can’t see why "sweet16" is a particularly magical number for its basic idea, at least except for the debutante (debutante, refers to the young women of the upper class who set foot in the social world for the first time, especially referring to the old British ) Beyond the possible contact. I think it is possible to make a three-by-three or five-by-five array and get roughly the same result.
Figure 2 can make an array of three times three times or five times five times, and get almost the same result.
In each case, the composite impedance will be the same as the individual impedance of each speaker's voice coil. As for the choice of naming or name, um... it's up to the readers to decide!
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