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P7 Quadratic Diffuser

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P7 Quadratic Diffuser Empty P7 Quadratic Diffuser

Post by BruceWayne Sat Oct 09, 2021 8:34 pm

P7 quadratic diffuser
Measures 90cm x 74cm x 10cm.

Quadratic diffusers are based on prime numbers. This is prime 7, hence they are called P7. P7 has 6 (7-1) wells and 1 zero depth well. Other iterations will be P11, P13, P17, P19, P23 with (P-1) wells respectively, plus the one well with zero depth.

Almost all on the market for some practical reason or symmetry, will ignore the zero depth well, but i have included it in this diffuser. So far i have only seen one established US manufacturer that has included this 'no' depth well in their design.

Ok, what's so special about these P numbers. They are all prime numbers. A prime number is a number that can only be divided by itself or 1 and no other. That's the basis of how the diffuser works and basis of its frequency bandwidth calculation.But when we remove the seemingly insignificant zero depth well, and make it into even number of wells, then the whole basis of the diffuser collapses. Sure, it will scatter the sound that hit it, but god knows what scattering that will be. In phase, out of phase, cancellation, addition, and it becomes unpredictable. Semua pun hantam sahaja 🤷‍.

I have a pair that is a proper P7 quadratic diffuser.
Made from Nyatoh wood, stained with Indian Rosewood. Very strong and rigid.
Selling for RM300 each just to cover material cost.

Contact: 017-Double eight, double three, 785

P7 Quadratic Diffuser A74b3310

Last edited by BruceWayne on Sat Oct 09, 2021 10:45 pm; edited 1 time in total (Reason for editing : Update info)

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