by P Williams
(Wales, UK)
I have recently purchased the Canton Movie 80CX 5.1 speaker system and a Sony STR-DH810 AV receiver. Knowing nothing about subwoofer crossover points I ended up trying to research the subject using google.
I came across the following quote “Try aiming for a crossover point that's around 10Hz above the lowest frequency that your smallest speakers can reproduce without distortion.”
The Canton Movie 80CX speakers have the following specifications:
Frequency response (Hz) Satellites & Centre: 120 - 25,000
Frequency response (Hz) Subwoofer: 38 - 140 (adjustable)
Subwoofer: crossover (65 to 150Hz)
According to the crossover rule of thumb I should set the subwoofer crossover point to about 130Hz. I am confused as to why Canton would design the subwoofer to be capable of a crossover point considerably below 120Hz.
Would setting it to say 70Hz leave a hole in the sound between 70 & 120Hz? I am confused so can anyone help. The highest subwoofer crossover point setting is also 10Hz higher than its own maximum frequency response.
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Paul started the Home Cinema Guide to help less-experienced users get the most out of today's audio-visual technology. He has worked as a sound, lighting and audio-visual engineer for around 20 years. At home, he has spent more time than is probably healthy installing, configuring, testing, de-rigging, fixing, tweaking, re-installing again (and sometimes using) various pieces of hi-fi and home cinema equipment.