Sintonizzato-Secondo Frequencies (Sintonizzato-S) are a variation of Solfeggio Frequencies. I call this variation “Secondo” because it has the second lowest starting frequency for a Solfeggio variation.

Sintonizzato-Secondo is Italian for Tuned-Second.

“For those of you in Rio Linda”, as Rush used to say, the first nine Solfeggio Frequencies are

Sintonizzato-S Frequencies are mathematically similar to Solfeggio Frequencies, but are not the same numbers. Like Solfeggios, the digital roots of Sintonizzatos match the positions of the vertices of three equilateral triangles inscribed in a circle, dividing its circumference into nine arcs of 40° each. Each of the nine vertices is given a number, 1-9, One of the triangles has vertices at (1,4,7), another at (2,5,8), and the other at (3,6,9).

All Sintonizzato-S Frequency digital roots coincide with those positions on the circle. The digital roots are in triads, which correspond to the vertices of the above-mentioned triangles. They are—
(4,7,1), (5,8,2), (6,9,3), (7,1,4) (8,2,5), (9,3,6), (1,4,7), (2,5,8), (3,6,9).

If you take the commas out of the above Sintonizzato-S triads, they are the first nine Solfeggio Frequencies with the first two digits transposed.
(471), (582), (693), (714) (825), (936), (147), (258), (369).

Whether or not the numbers are transposed, you are talking about the same three triangles.

Like Solfeggio Frequencies, Sintonizzato-S Frequencies are separated by 111 Hz, unless that difference does not work. Where it doesn’t work, they are separated by 102 Hz or 121 Hz. Groups of nine consecutive Sintonizzato-S Frequencies are separated by 121 Hz.

As in Solfeggio Frequencies, (with the exception of 1074 Hz, which might or might not be a Solfeggio, depending on how the Solfeggio sequence continues past 963 Hz)^<1>, no Sintonizzato Frequency includes a zero. [CORRECTION] no Sintonizzato Frequency includes a zero in the ones, tens or hundreds places. If you continue a Sintonizzato sequence into 5-digit or higher frequencies, however, a zero can appear in the thousands and/or larger places.

The First 90 Sintonizzato-S Frequencies

 112,  223,  334,  445,  556,  667,
 778,  889,  991, 1112, 1223, 1334,
1445, 1556, 1667, 1778, 1889, 1991,
2112, 2223, 2334, 2445, 2556, 2667,
2778, 2889, 2991, 3112, 3223, 3334,
3445, 3556, 3667, 3778, 3889, 3991,
4112, 4223, 4334, 4445, 4556, 4667,
4778, 4889, 4991, 5112, 5223, 5334,
5445, 5556, 5667, 5778, 5889, 5991,
6112, 6223, 6334, 6445, 6556, 6667,
6778, 6889, 6991, 7112, 7223, 7334,
7445, 7556, 7667, 7778, 7889, 7991,
8112, 8223, 8334, 8445, 8556, 8667,
8778, 8889, 8991, 9112, 9223, 9334,
9445, 9556, 9667, 9778, 9889, 9991 Hz.

As you can see, they start at 112 Hz, which is the second lowest start for a Solfeggio variation. These differ by 111 Hz, 102 Hz or 121 Hz.

Also, with row breaks as placed above, the last three digits of each frequency line up in columns. These columns are made of repeating Solfeggio Frequencies. Don’t ask me why!
(174), (285), (396), (417), (528), (639), (741)

4, 7, 1, 4, 7, 1, 4, 7, 1,
5, 8, 2, 5, 8, 2, 5, 8, 2,
6, 9, 3, 6, 9, 3, 6, 9, 3,
7, 1, 4, 7, 1, 4, 7, 1, 4,
8, 2, 5, 8, 2, 5, 8, 2, 5,
9, 3, 6, 9, 3, 6, 9, 3, 6,
1, 4, 7, 1, 4, 7, 1, 4, 7,
2, 5, 8, 2, 5, 8, 2, 5, 8,
3, 6, 9, 3, 6, 9, 3, 6, 9,
4, 7, 1, 4, 7, 1, 4, 7, 1

When lined-up as above, the columns are the digits 1 to 9, repeating, but starting with 4, 7, or 1.

Simple! Small!

Do Sintonizzato-S Frequencies have a beneficial effect on spiritual, physical, emotional, or mental health? I don’t know. I want them to be more beneficial than Solfeggios. Why shouldn’t I? They are simple and start humbly.

For the purpose of producing beneficial effects, I consider Sintonizzato-S experimental. I will spare you my previously-expressed thoughts about experiments.
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Note 1. In my opinion, the tenth Solfeggio Frequency is 1174 Hz. [CORRECTION] The tenth Solfeggio Frequency could be either 1074 Hz or 1174 Hz, depending on which sequence one uses. But this article is not primarily about Solfeggios.

Copyright © 2025 Michael Kaarhus