Impedance and loudspeaker sensitivity measurements

Posted in Whole House Audio over 3 years ago, 2 replies

If a loudspeakers sensitivity is measured as db's produced from applying 1watt at 1m at 8ohms, then how much voltage is supplied when measuring a 6ohm speaker for instance. 2.4v? or still 2.83 volts, which means the applied power is not 1w. I'm confused.
Avatar_thumbnail
submitted by Richi in UK
You can use either 2.4V or 2.83V, your choice.

Use 2.4V if you want to stick with 1W/1M.

Use 2.83V if you want to do the same as many speaker manufacturers have done and still do. It certainly makes lower Re drivers look better regarding SPL efficiency but doesn't apply 1W of input power.
Avatar_thumbnail
submitted by carl in New England, USA @ January 07, 2009 - 11:13 AM
Reply
the reputable manufacturers will actually supply the v/m value instead of the w/m value. Occasionally, even both are supplied.
Avatar_thumbnail
submitted by speakerman in around @ July 15, 2010 - 02:56 PM
Reply

Write a Reply


Your Name

Your Location in The World

Example: Seattle, WA
Optional: You may login or register for email notifications and to add a profile pic.

Show HTML Controls

I have photo(s) to upload with this reply.

Please Confirm You are Human