Malcolm Posted September 8, 2002 Share Posted September 8, 2002 Anybody remember how to covert the old EIA loudspeaker sensitivity rating to SPL at 1W at 1M? For example, what would an old rating of 45 dB be in today's terms? Quote Link to comment Share on other sites More sharing options...
Malcolm Posted September 9, 2002 Author Share Posted September 9, 2002 Make that RETMA sensitivity rating. How to convert from the old RETMA rating to the current kind? Quote Link to comment Share on other sites More sharing options...
djk Posted September 9, 2002 Share Posted September 9, 2002 1mW at 30ft to 1W at 1M Add 30dB for the 1W Add 19dB for the 1M 45dB + 30dB + 19dB = 94dB Quote Link to comment Share on other sites More sharing options...
Malcolm Posted September 9, 2002 Author Share Posted September 9, 2002 Thanks! Quote Link to comment Share on other sites More sharing options...
kenratboy Posted September 9, 2002 Share Posted September 9, 2002 Smarty pants! Where can I get mad speaker math? ------------------ Receiver: Sony STR-DE675 CD player: Sony CDP-CX300 Turntable: Technics SL-J3 with Audio-Technica TR485U Speakers: JBL HLS-610 Subwoofer: JBL 4648A-8 Sub amp: Parts Express 180 watt Center/surrounds: Teac 3-way bookshelfs Yes, it sucks, but better to come. KLIPSCH soon! My computer is better than my stereo! For JBL related subjects and more fun, click: http://www.audioheritage.org Quote Link to comment Share on other sites More sharing options...
Malcolm Posted September 9, 2002 Author Share Posted September 9, 2002 Ken, Once you know the old standard is 1 mW at 30 feet, it is just a matter of using simple math and logarithms to convert to 1 W at 1 meter. You are in college. You know logarithms don't you? Quote Link to comment Share on other sites More sharing options...
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