Driver spacing ... ?

[REALFLEO]

Hi all,

What do you think of that:

Driver spacing? Try to keep the dimensions of the mid and tweeter chambers less than the length of a wave at the crossover point. The table on the left lists wavelengths at different frequencies.

5000 Hz 2.7 in
3000 Hz 4.5 in
1500 Hz 9.0 in
750 Hz 18.1 in
500 Hz 27.1 in
300 Hz 45.2 in
200 Hz 67.8 in
100 Hz 135.6 in

http://www.lalena.com/Audio/FAQ/Build/

Thanks,

REALFLEO

 

[AndrewT]

Hi,
I see sense in his other suggestion to keep driver to driver spacing small. It all about beaming and lobes and uneven off axis response.
I cannot see a reason for limiting the internal dimensions of the back boxes.
Have you a clue to why this would be an advantage?

 

[REALFLEO]

You should also keep the centers of 2 drivers within the length of a wave at the crossover frequency. Also note that a speaker producing frequencies of a wavelength less than its effective diameter will be very directional at those frequencies.

I think it's also to limit stationary wave but I'm not sure and that's why I'm asking your opinion .

Thanks,

REALFLEO