cport wrote:
Quote:
@Cogitare magis: Crossover points have nothing to do with the concept of eliminating reflections.
Non Logica. The phase plug (as you state) is designed to prevent "high-frequencies" from self cancelling [the size and positioning of the phase plug only impacts higher frequencies, reflecting them outward, and is
transparent to lower frequencies] -- so your statement makes zero sense -- if the driver is not fed frequencies (via the crossover) that the phase plug could impact, then the cone will not move, and there will be no
reflections that it will correct for -- so crossover points have everything to do with "maintaining linearity" of a driver.
You dont understand the concept of transparency here. The ear canal is approximately 1cm in diameter. If we hear only those waves that are smaller than 1cm in wavelength, we should not hear anything less than 30kHz.
Point is, when you place an obstruction in front of a sound source, it reflects the sound back. Amount of reflection depends upon how much of the source is obstructed. If the wavelength of the source is significantly larger than the obstruction, then only that part of the source is reflected back, and most of the wave will go around the obstruction. That is the concept of "transparency". Transparency does not mean 100% of the sound magically navigates around obstructions to reach its destination.
Quote:
if the driver is not fed frequencies (via the crossover) ...
Crossovers DO NOT cut-off frequencies. Frequencies just attenuated on a sliding scale (slope). So, ALL frequences are still fed to the drivers on both sides of the crossover. The amplitude the signal reduces as you go far away from the crossover point.
Login
Register
FAQ
Search
