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The Dima’s idea of delaying the modulated signal still not in the auditable format. As I understand he designed the circuit and we get all parts we need but it moves forwards slow. The devise will have modulator, delay mechanism, demodulator and output buffer. Since I would not accept as “success” anything besides the absolute transparency and absolute not-audibility and since there is no absolutely transparent line-level output buffer out there beside the Guy Hammel buffer I was initially planning to use the Placette’s output stage for the delay. I spoke with Guy and he was agreeing to supply one. However, Dima suggested that he might come up with “absolutely transparent buffer” himself. He did designe and built the buffer and now it is sitting in his place, waiting to be shipped. If the buffer turned out to be transparent then it might be a good start for the delay circuit. If the buffer will not be transparent then there is no reason to pursuit with the delay implementation.

Anyhow, the distance between the listener and the MOUTH of the horn is irrelevant (at least for time aliment). The distance between the listener and the cone of the driver is one that counts.

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