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Multi-Way Conventional loudspeakers with crossovers

The Golden Ratio of 1.618
The Golden Ratio of 1.618
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Old 9th October 2012, 02:44 AM   #21
phivates is offline phivates  United States
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There's another ratio hidden in all this, the square root of phi, 1.27. Gets you there, just more gradually.
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Old 9th October 2012, 06:40 AM   #22
Remlab is offline Remlab  United States
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Quote:
Originally Posted by rjbond3rd View Post
Try:

1. Find the cabinet volume
2. Find the volume's cube root. That's your 1.0 dimension.
3. Multiple the cube root by .618 and 1.618. Those are the other two dimensions.
Or the smallest dimension x 1.618 and then the smallest dimension x 2.618
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Old 9th October 2012, 06:52 AM   #23
planet10 is offline planet10  Canada
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The Golden Ratio of 1.618
Quote:
Originally Posted by Remlab View Post
Or the smallest dimension x 1.618 and then the smallest dimension x 2.618
Which is the same as smallest x phi = middle. Middle x phi = longest.

ie 1.618 ^2 = 2.618. Also 1/1.618 = 0.618

dave
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Old 9th October 2012, 11:36 PM   #24
Remlab is offline Remlab  United States
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Quote:
Originally Posted by planet10 View Post
Which is the same as smallest x phi = middle. Middle x phi = longest.

ie 1.618 ^2 = 2.618. Also 1/1.618 = 0.618

dave
Very "fun" ratio to play with. Probably the easiest method to remember though for the mathematically uninclined is the one I stated.
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Last edited by Remlab; 9th October 2012 at 11:45 PM.
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Old 10th October 2012, 03:59 AM   #25
Silent Screamer is offline Silent Screamer  Australia
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Quote:
Originally Posted by rjbond3rd View Post
Try:

1. Find the cabinet volume
2. Find the volume's cube root. That's your 1.0 dimension.
3. Multiple the cube root by .618 and 1.618. Those are the other two dimensions.
If he has a minimum dimension of 13.335 then wouldn't you?

1. 13.335 / .618 = 21.578
2. 21.578 * 1.618 = 34.913

21.578 (X3) = 10.047
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Old 10th October 2012, 05:25 AM   #26
planet10 is offline planet10  Canada
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The Golden Ratio of 1.618
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Originally Posted by Silent Screamer View Post
If he has a minimum dimension of 13.335 then wouldn't you?
See post #4. We are starting to go in circles

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Old 10th October 2012, 05:30 AM   #27
Silent Screamer is offline Silent Screamer  Australia
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Originally Posted by planet10 View Post
See post #4. We are starting to go in circles

dave
Yeah but you said 6, I said half a dozen
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Old 10th October 2012, 05:38 AM   #28
picowallspeaker is offline picowallspeaker  Italy
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I remember that the Golden ratio was in a book ...
It was about ORIGAMI and it was the right dimensioned rectangle
to start to fold ....
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Old 10th October 2012, 06:56 AM   #29
Remlab is offline Remlab  United States
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One thing that can ruin it though, is any type of bracing or solid object within that "golden ratio" space. And if the box is small enough and the magnet is large enough, that can ruin the effect too..
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Old 10th October 2012, 08:15 AM   #30
tinitus is offline tinitus  Europe
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The Golden Ratio of 1.618
many golden ratios are possible in a speaker box

1. each individual surface
2. each individual surface in relation to other surfaces
3. cubic relations, volume, or volumes
4. mounting of each driver in relation to surface
5. relations between several drivers
6. bracing

I guess the list could be longer
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