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Decibels, loudness, amplifiers, formulas...complete confusion!
Vurbal:
Given the information provided, it was a theoretical question.
That's not a criticism, but merely an explanation of the type of answers you got.
superboyac:
Another good site with information:
http://shure.custhelp.com/app/answers/detail/a_id/2991/~/understanding-earphone-%2F-headphone-specifications
The headphones come with this specification for rating, normally given in db/mW. From that site, the db is indeed referring to SPL (sound pressure). That's good. Now we know that for my given headphone rating (96 db/mW), to get 96 db loudness, I need 1 mW. The voltage for that is 0.78V.
But I want to be able to go hurtful loud sometimes, just so I know my equipment can handle it. Most people say that 120db is way too loud to listen to for extended periods of time (or even short periods!). Perfect!
The Headmp says it can do up to +35db in gain. OK, that means:
96+35=131 db max
Well, that should do it! So I'm going to get the headamp.
Now, let's do an experiment to see if I'm right or not. This is it:
The knob can do max 35 gain. So 0-100% is 1-35 db.
If I want comfy listening volume, like 100 db, where would the knob be?
(100-96)/35 = 11%, so almost a quarter turn of the knob.
Let's say I want 115 db:
(115-96)/35 = 54%, so the knob should maybe be about half turned.
Let's say I want to blow my ears out, 120db:
(120-96)/35 = 69%, so the knob is just about three-quarters turned.
We'll see!
superboyac:
Given the information provided, it was a theoretical question.
That's not a criticism, but merely an explanation of the type of answers you got.
-Vurbal (December 10, 2014, 03:07 PM)
--- End quote ---
No problem! It's all useful for me.
CWuestefeld:
I think that all you really need is an amp that goes to 11.
superboyac:
I think that all you really need is an amp that goes to 11.
-CWuestefeld (December 10, 2014, 03:36 PM)
--- End quote ---
;D
If it were a cartoon, I'd just write in "11" "12" and crank the knob a bit more!
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