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... | |
| 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... | |
| 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 -... | |
| 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... | |
| 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... | |
| A Question on Speaker Driver Efficiency " For someone who has only been participating in this forum for a couple of months you certainly are quick to direct insulting comments at some of the forum’s most knowledgeable and widely respected members. And that certainly includes Kijanki,... | |
| A Question on Speaker Driver Efficiency " Really? Hand-waving seems to be what you are doing with this quote...Somehow you don’t seem to make the connection that current has to flow if a circuit is complete. Its Circuit Basics 101 first day stuff. " - atmasphereWhat a clueless statement... | |
| A Question on Speaker Driver Efficiency @atmasphere I'm the only one in this thread actually citing equations based on Kirchoff's law while you hand wave generalizations about tube amps. | |
| A Question on Speaker Driver Efficiency "Again, current (and not voltage) is what moves the coil." - kijankiThat statement is utterly clueless and contradicts a widely held definition that has been born out in countless measurements of voltage and current in coils. Once again, the defi... | |
| A Question on Speaker Driver Efficiency " @cj1965 Current in the circuit is still the same. You are confusing voltage across the speaker with current. Imagine simple circuit consisting of voltage source and bunch of inductors and capacitors in series. Now you insert speaker into it. ... | |
| A Question on Speaker Driver Efficiency @almarg Do the math. Take two 8 ohm nominal woofers, connect them in series, and apply 2.83v. 2.83 divided by 16 = .176875 Amps (current "I")power dissipated into each woofer in this circuit then becomes:R(I X I) or resistance of each woofer tim... | |
| A Question on Speaker Driver Efficiency " Thank you. People need to learn to express their opinions without the need to insult others, especially the ones whose knowledge and experience as well as their contributions are unique in this industry. " - kalaliIf I had known that atmasph... | |
| A Question on Speaker Driver Efficiency @almarg That’s all well and good, however, the laws of physics and the mathematical descriptions of those laws haven't changed much in the past century. Every circuit has capacitance, inductance, and resistance - of that there is very little doubt... | |
| A Question on Speaker Driver Efficiency :"OMG, Do you really think that electric current slows down thru inductance in the circuit and accelerates after? Please simulate this before you place more of this nonsense. " - kijankiOMG....educate yourself before you go online and make your... |