學習中 Bowers & Wilkins Hong Kong
【超低音分頻點與音量的調校】
超低音屬獨立聲道，與主聲道不同的是，LFE（Low-frequency Effect）聲道只傳送 120Hz 以下的低頻訊號，對其他聲軌沒有直接的影響。
用家可將超低音的分頻點設定為 Bypass 位置，由 AV 擴音機直接進行分頻工作，避免因雙重分音工作而造成失真的問題。THX 標準建議將所有聲道的分頻點設定為 80Hz，但要留意有些環繞聲音響根本無法令你聽到 80Hz 的聲音。所以，如果將它們的分頻點設定至 100Hz，那超低音的分頻點最好也設定為 100Hz。
至於音量調校方面，一般來說都建議調教至約一半的音量，然後透過 AV 擴音機的電平設定作出調校，能夠提升聲音整體的平衡性。
【Subwoofer Crossover and Volume Adjustment】
Subwoofer is an independent channel. Unlike the main channel, LFE (Low-frequency Effect) channel only transmits low-frequency signals up to 120Hz, which has no direct effect on other tracks.
Users can set the subwoofer’s crossover point to the Bypass position, allowing AV amplifier to work on the frequency, so as to keep a better sound quality. The THX standard recommends setting all the crossover points to 80Hz, but note that you may not able to hear 80Hz sound playing by some surround sound speakers. So, if you set the crossover points to 100Hz, then that subwoofer’s crossover point should also be set to 100Hz.
For the volume adjustment, it is recommended setting it to about half of the full volume, and adjust by AV amplifier level setting afterwards to have a balance of sound.
