RE: Amplifier power in dB Watts

Posted by BigguyinATL (M) on March 31, 2015 at 13:25:32

In Reply to: RE: 45 amp and 95db speakers posted by Paul Joppa on March 29, 2015 at 19:49:38:

Sometimes it's easier to express the Amplifier in decibels relative to a watt. So
1 Watt = 0dBW
2 Watt = 3dBW
4 Watt = 6dBW
10Watts = 10dB
now you can multiple and ADD
20 Watts = 10 + 3 or 13dBW
40 Watts = 10 + 6 0r 16dBW
100 Watts = 20dBW
200 Watts = 23dBwatt

Now if you have the loudspeaker sensitivity @ 1 meter and one watt (for example 95dB) you can add the amplifier sensitivity and the loudspeaker sensitivity to get the maximum peak system output.

The average maximum output when playing music will be a 10-15dB less depending on the dynamics in the recorded signal. when you are 2 meters away - subtract 20dB for every 10 times that distance you move away (when outdoors.

"The hardest thing of all is to find a black cat in a dark room, especially if there is no cat" - Confucius

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Follow Ups Full Thread

Topic - 45 amp and 95db speakers - sam@edelmannpgh.us 16:21:40 03/29/15 (27)

Orgue Diatone Reissues? - David Lawrence 13:44:46 04/07/15 (0)

I wonder... - djk 23:06:17 04/05/15 (15)

RE: I wonder... - Tre' 08:28:25 04/06/15 (14)

RE: I wonder... - tomservo 09:42:15 04/07/15 (10)

RE: I wonder... - Tre' 11:48:47 04/07/15 (9)

RE: I wonder... - thetubeguy1954 23:17:47 04/10/15 (0)

RE: I wonder... - tomservo 13:18:08 04/07/15 (7)

RE: I wonder... - Tre' 16:35:20 04/07/15 (1)

RE: I wonder... - tomservo 06:24:25 04/08/15 (0)

RE: I wonder... - claudej1@aol.com 13:41:57 04/07/15 (4)

RE: I wonder... - tomservo 06:26:30 04/08/15 (3)

RE: I wonder... - claudej1@aol.com 06:59:23 04/08/15 (2)

Boy, did I get a reminder of that last weekend! - jusbe 20:44:52 04/22/15 (0)

RE: I wonder... - thetubeguy1954 23:29:16 04/10/15 (0)

RE: I wonder... - djk 15:38:48 04/06/15 (2)

RE: I wonder... - Tre' 20:20:52 04/06/15 (1)

OSHA - djk 00:55:02 04/07/15 (0)

RE: 45 amp and 95db speakers - Larry I 05:53:10 04/01/15 (1)

RE: 45 amp and 95db speakers - hvbias 19:44:55 04/03/15 (0)

RE: 45 amp and 95db speakers - vinnie2 05:19:50 03/30/15 (0)

RE: 45 amp and 95db speakers - Paul Joppa 19:49:38 03/29/15 (6)

RE: Amplifier power in dB Watts - BigguyinATL 13:25:32 03/31/15 (0)

RE: 45 amp and 95db speakers - sam@edelmannpgh.us 04:03:00 03/30/15 (4)

RE: 45 amp and 95db speakers - Jim D. 09:11:02 03/31/15 (2)

RE: 45 amp and 95db speakers - Paul Joppa 12:56:23 03/31/15 (1)

RE: 45 amp and 95db speakers - Saturntube 14:54:30 03/31/15 (0)

RE: 45 amp and 95db speakers - b.l.zeebub 06:29:58 03/30/15 (0)

Follow Ups

RE: Amplifier power in dB Watts - BigguyinATL 13:25:32 03/31/15 (0)

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