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Speaker Asylum General speaker questions for audio and home theater. |
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Speaker Asylum General speaker questions for audio and home theater. |
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In Reply to: Please excuse my trivial question on speakers design. posted by beppe61 on February 1, 2007 at 02:58:16:
The lower bass frequencies will be hard to hear unless there is a rising frequency response under 50Hz. The C-weighted SPL curve adjusts for the difficulty of hearing deep bass at normal volumes (bass needs to be roughly +6dB at 20Hz., relative to 1000Hz., to sound subjectively flat to our ears at normal volumes).Flat treble frequency respoonse above 2000Hz. will usually sound too bright to listeners with normal hearing ability, unless they sit quite far from their speakers (air absorbs the highest frequencies well, so putting a lot of air between the tweeters and your ears will make them sound less bright).
Relatively flat frequency response from 50 to 2000 Hz. on axis IS important, but not very hard to obtain ... yet speakers with relatively flat on-axis frequency responses will sound very different mainly because their off-axis frequency responses differ so much (this sound energy reaches the ears via room reflections).
Other important speaker attributes are the ability to recreate a transient sound (step response), harmonic distortion (mainly affects bass frequencies) and intermodulation distortion (mainly affects mid-range clarity from a small diameter driver that has to stroke long distances to reproduce deep bass while playing mid-range frequencies at the same time).
And on top of all that, people prefer speakers that look good, or have received good reviews in audio journals, or have been recommended by friends and salesmen.
The worst news is sometimes people buy speakers that sounded good in the audio store ... but not so good at home ... and they can't be returned.
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Richard BassNut Greene
Subjective Audiophile 2007
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Follow Ups
- A flat frequency response will never sound good -- it's not a goal - Richard BassNut Greene 08:54:53 02/01/07 (2)
- Why not tilted down ever so slightly? - Ozzie 10:57:17 02/02/07 (1)
- Re: A flat frequency response will never sound good -- it's not a goal - beppe61 11:14:46 02/01/07 (0)
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