about speakers

Posted by Shawn Harvey [IP: 206.31.111.18] on August 30, 1999 at 17:37:44
Using Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt):

In Reply to: about speakers posted by lakshman on August 28, 1999 at 21:35:04:

db is a measure of speaker "loudness" -- how loud a sound is to your ears. Going down 3db means that what you are hearing "sounds" about 1/2 as loud. Thus if you are down 3dB at 10Hz versus 20Hz, the speaker will still be putting out power at 10 but it will be 1/2 as loud. Most people quote the -3dB point as a reference because even though you are down at that level you're still getting useful output.

When they say 30-20,000Hz +/- 3dB they mean the level doesn't change more than 3dB up or down from a reference level between those frequencies. It's usually considered good to have a more flat frequency response than a non-flat one, but that's simplifying things quite a bit.

Basically if you see a -3dB point at 40Hz or below you're getting decent low bass. At less than that it's good low bass extension from most speakers.

Note, again, that that's simplifying things. Your ears are the best judge.

Shawn Harvey

Follow Ups:

• about speakers - Charlie K 16:20:36 09/01/99 (2)
  • about speakers - Shawn Harvey 19:16:38 09/02/99 (1)
    • about speakers - Charlie K 21:35:29 09/02/99 (0)

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