Wouldn't the SPL be a function of the frequency weighting and the transducer as well?
For example, my vintage Acoustic 18" folded horn bass enclosure has a sticker with a warning that it can produce ear damaging levels at even relatively low volume settings. That's because the folded horn increases efficiency by almost behaving like a focusing lens.
When tested with a sound level meter it showed the ability to produce dangerous sound levels with as little as 100 watts pushing it. Since the average stage bass head packs 200 watts and up, it's something you need to be aware of if you're using one.
-40hz
I think that's precisely the problem I'm having. As far as I know, there's no formulaic connection between sound levels and electrical circuitry (ohms, volts, current). With a sound level meter, yes, you can measure the SPL or whatever it is that indicates loudness.
I'm pretty sure the problem is that the supposedly knowledgeable people do not clearly understand it themselves, especially the electrical engineering aspect of it, which is hard to understand anyway. There's just no obvious, formulaic connection between the electrical circuitry elements and the loudness. They are using rules of thumbs and using impedance values, but ultimately there's no direct connection.
I think the answer is simply:
I just need an amp with more juice. The headphones have high impedance, they need more volts (since everyone is talking about voltage).
power = (voltage)^2/R
My R is larger than normal. For the same amount of power driving low impedance phones, I need more voltage. It's that simple to me.
for the headamp I want to buy, the max gain is 35. I think that means if I input 1V, it will output 35V.
Unfortunately, the headamp has odd specs. It shows specs for "Z" values, which indicate impedance, then gives the rating as watts, lol.
like this...
"Output Z: 10W"
lol, ok.
"How many apples you got in that bag there?"
"I got 30 oranges!"
and that's just one problem in this whole thing.
Recent Posts
