In technical terms, the difference is that the port resonance in ATC designs is well damped, with a relatively low Q of around 0.5, giving a fairly gentle and natural-sounding bass roll-off with very good extension. In contrast, most ported speakers are designed with more aggressive port tuning, Q values of 0.7 or higher being quite typical. These higher values reduce the port damping, allowing the resonant energy to enhance the low end, often giving the impression of a more powerful, 'thumpy' bass response. The down side is a much steeper roll-off which actually reduces the total bass extension quite dramatically.
Ich glaube das war auch krabat's Philosophie...kann man ja nicht mehr fragen...ist mir aber glaube ich einen Versuch wert...
. (copyright by mechanic)
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