Iceman Posted February 18, 2003 Share Posted February 18, 2003 I was comparing Klipsch speakers to other brands. As I have come to undestand it, the sensitivity of a speaker has to do with the amount of power needed to produce a certain SPL. For instance, the RF3 II's have a sensitivity of 98db. Another brand recorded their sensitivity to be 91db(2.83V@ 1 meter). Since the difference is this large between speakers, it leads me to believe that these are measured under different conditions. Klipsch doesn't provide info on the voltage used for determining sensitivity. Does anyone have a clue as to the comparability and validity of these figures? What can you tell me about this? Thank You very much for your time Quote Link to comment Share on other sites More sharing options...
tpg Posted February 18, 2003 Share Posted February 18, 2003 The sensitivity is measured using one watt or 2.83V. Conditions are generally similar for testing, I would think. Quote Link to comment Share on other sites More sharing options...
JohnA Posted February 18, 2003 Share Posted February 18, 2003 The test conditions will certainly differ between makers. However, Klipsch is well known for building efficient speakers and is part of its claim to fame. It is not at all surprising that thee would be a 7 dB difference between a moderate priced Klipsch and another brand. The 91 dB speaker is atypically efficient for the norm, too. I run La Scalas as mains. They are 104 dB/w/m. The difference between them and most on the same amp is astounding. Quote Link to comment Share on other sites More sharing options...
minn_male42 Posted February 18, 2003 Share Posted February 18, 2003 the speaker companies generally follow the same testing methods....a calibrated microphone is placed 1 meter in front of the test speaker in a chamber with no reflections.... my klf-30's also are 104db at 1 watt at 1 meter... an interesting side note...for every 6 db of gain you need to double the power required for the same volume... russ Quote Link to comment Share on other sites More sharing options...
Iceman Posted February 19, 2003 Author Share Posted February 19, 2003 I understand that a 6 db increase requires double the power. However, what about adding multiple speakers? If you double the speakers, will you increase the decibels or just cover more space for the sound? Also, at what frequencies are these SPL readings recorded? Klipsch seems to have extraordinarily high sensitivity ratings, but I heard they are also characterized at playing high notes very accurately. The kind of music I listen do lacks high notes overall. If the Klipsch produce these volumes for high frequencies, could other less competent(sensitive) speakers be more similar at mid-range frequencies? Thank you very much for your comments, everyone Quote Link to comment Share on other sites More sharing options...
T2K Posted February 19, 2003 Share Posted February 19, 2003 Takes a doubling of power to increase output 3db. Add a second pair of speakers, get 3db. I think. Keith Quote Link to comment Share on other sites More sharing options...
dougdrake Posted February 19, 2003 Share Posted February 19, 2003 And the sensitivity tests are 1 watt (2.83 volts) at 1 meter distance at 1000hz...same as everyone. Iceman - If you doubt the sensitivity ratings, just try hooking up brand X and Klipsch to the same source and notice how much louder the Klipsch play at the same volume setting DD Quote Link to comment Share on other sites More sharing options...
Mighty Favog Posted February 19, 2003 Share Posted February 19, 2003 ---------------- On 2/18/2003 8:55:09 PM minn_male42 wrote: my klf-30's also are 104db at 1 watt at 1 meter... russ ---------------- Shouldn't that be at 102db and not 104db?? Quote Link to comment Share on other sites More sharing options...
Iceman Posted February 19, 2003 Author Share Posted February 19, 2003 I don't doubt the Klipsch ratings in any way. It is the other manufacturers that I have doubts about. Thank you very much for your time Quote Link to comment Share on other sites More sharing options...
DEAM Posted February 19, 2003 Share Posted February 19, 2003 ICEMAN DO YOUR SELF A FAVOR AND GO BUY BOSE . Quote Link to comment Share on other sites More sharing options...
Vladi Posted February 19, 2003 Share Posted February 19, 2003 Pay no attention to him Quote Link to comment Share on other sites More sharing options...
minn_male42 Posted February 19, 2003 Share Posted February 19, 2003 i stand corrected... 1. KLF-30's - 102 db @ 1 watt @ 1 meter 2. 3 db require a power doubling....but in order to perceive a noticable difference in volume, the human ear needs a 6 db increase. the result...to perceive an increase in loudness you need to double and then double again the power by doing the math you can see that inefficient speakers can require HUGE AMOUNTS of power to get the same result as an efficient speaker like klipsch russ Quote Link to comment Share on other sites More sharing options...
T2K Posted February 20, 2003 Share Posted February 20, 2003 I can easily hear a difference in 3db output. Measured it with my SPL meter. Keith Quote Link to comment Share on other sites More sharing options...
artto Posted February 20, 2003 Share Posted February 20, 2003 Isn't Bose a four letter word? Or was that supposed to be Blows? Quote Link to comment Share on other sites More sharing options...
Mighty Favog Posted February 20, 2003 Share Posted February 20, 2003 ---------------- On 2/20/2003 2:30:53 PM artto wrote: Isn't Bose a four letter word? ---------------- And I thought that word started with an "S". Quote Link to comment Share on other sites More sharing options...
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