cj1965
Responses from cj1965
| Folded tweeters vs. dome? +1 @to catchIf you don’t need "you are there" sound pressure levels in that size room you will not find a better speaker in terms of balanced off axis response and stable imaging at the $1200 level than KEF L50s. The sub will free them up to do wh... | |
| Please Read and express your feelings and opinions.... I believe that the references to force in this discussion are unnecessary and are contributing to confusion, and I believe that Atmasphere is correct. A short while ago I posted as follows in the other thread I referenced above, in relation to thi... | |
| A Question on Speaker Driver Efficiency Al - Yes indeed. These are all just rewrite. Since power is proportional to the square of the voltage:(0.5 x 0.5) = 0.25Now, calculating power difference: 10 log (0.25) = -6 dB - erik_squiresWrong again. You cannot simply substitute the electri... | |
| Please Read and express your feelings and opinions.... " Again, halving the **voltage** reduces the force to 1/4th. " - atmasphereReally? Are you serious? What do you think voltage is, my friend? Voltage is "electro motive FORCE". Halving the voltage does not reduce the force to 1/4. It reduces power ... | |
| A Question on Speaker Driver Efficiency @almarg Please look up the definition of sound power. You will find it is not based solely on the net force applied but the area as well. If you run the calculations for sound power and put the values in the sound power db formula, you will get -... | |
| Please Read and express your feelings and opinions.... @atmasphere You’re using the wrong formula - equating electrical power to sound power. The db formula for sound power is :10 X log 10 (P/Po) dbwhere P is the measured sound power and Po is the reference level.If you doubt me, look it up. I believe... | |
| A Question on Speaker Driver Efficiency @erik_squires No, we're not far off from the essence of the question posed by the OP. Application of the decibel expression of voltage gain/loss to sound power gain/loss is not appropriate.. Sound power level, denoted LW and measured in dB, is de... | |
| Please Read and express your feelings and opinions.... ...and right on cue, the high priest of vinyl once again flails his hands in the traditional motion pattern signaling "fake news"....so predictable.... | |
| Please Read and express your feelings and opinions.... Wow.....Geoff is silent for more than 4 hours, is that a record? .Did I say something to offend him? I certainly wouldn’t want to "hurt his feelings". We all have "feelings" that need to be respected and protected in "safe spaces"....not the "padd... | |
| Please Read and express your feelings and opinions.... @kosst_amojan Hey Koss, measuring and counting is only for the doubters and haters like this guy -http://www.pspatialaudio.com/LP_performance.htmWhy measure and count when you can simply BELIEVE. And of course, you're probably forgetting all about... | |
| Please Read and express your feelings and opinions.... Yep... Those pesky measurements! And the guys who invent the stuff this hobby is made of. Shame on them for actually achieving results! Quite unlike you and your magic rocks and silly spots. - kosst_amojanFor some people, "results" means using ... | |
| Please Read and express your feelings and opinions.... On a positive note, the best way to deal with clueless self proclaimed "experts" that argue incessantly with self aggrandizing, self promotional blather and nonsense is to simply ignore them. Every forum has them and for newbies, it can be a littl... | |
| Please Read and express your feelings and opinions.... " Some Audiogoners (no names) start threads after threads which ask the same questions, over and over and over again. They usually get thoughtful responses, but they, the OPs, don’t seem to learn anything or have the motivation to act on any of... | |
| A Question on Speaker Driver Efficiency " So if you have a 97 db 1 watt/1 meter 8 ohm driver, two in series will have the same efficiency (since each is absorbing 1/2 watt) while the sensitivity is 94 db " - atmashpereEach is not absorbing 1/2 watt when placed in series (with the req... | |
| A Question on Speaker Driver Efficiency " re your last post that was directed to me, your math is of course correct. However, once again, if efficiency is defined as the SPL produced at 1 meter in response to an input of 1 watt, if that 1 watt is provided to two speakers connected ei... |