Grant Bunter wrote: ↑
Sun Sep 12, 2021 5:17 pm
Seth wrote: ↑
Sun Sep 12, 2021 12:23 pm
I can sense a 1dB change in a test tone in and A/B test with my earbuds. But, among ambient noise and a music source, I'm not so sure I'd be able to tell you...
I guess I should be more succinct.
I'm talking about live music, or replaying recorded music, through PA.
I might throw on a set of cans to listen to a channel to see if I can tweak, but that's about frequencies, not dB.
Otherwise, I'm with Bruce in that I can't pick 1dB
You know, sometimes when I read things, something will grab my attention and my mind will start thinking about what caught my attention while my eyes keep reading. Then I realize I've read a whole page, but haven't "listened" to a single word following that which caught my attention. Then I have to go back and read it all again and "listen" this time through.
I think that's happened here. I wrote pretty much the same thing you did. But, you obviously didn't "hear" it. You even cut it out of the quote then wrote your reply as though I never said it.
What I wrote was "
I can sense a 1dB change in a test tone in and A/B test with my earbuds. But, among ambient noise and a music source, I'm not so sure I'd be able to tell you if/when a music track in a room or outdoors was changed by 1dB. I tend to doubt I'd be able to call out a 1dB change in that situation with any reasonable consistency and repeatability, if at all."
I thought you were pretty succinct when you wrote "Science says most people can't pick a 1dB increase, but some say they can."
"You can't hear a 1dB change (period)" is very different than "You wont hear a 1dB change in a live/recorded show over PA"
I think there is an error here.
And that error is an assumption that the 1 x 12 is a lab12. Since it's a 1 x 12, it could be a Delta12LFA. That would explain the differing results.
Damn, I think you're right Grant! The only other curves on that page that looked similar were comparing two LAB12 loaded cabs. I just looked at the curve shape and made the ASSumption.
Here's the Delta 12LFA and 3012LF (I made a mistake AGAIN! CORRECTION: it's actually an S2012, not a Delta 12 LFA Time to step away from the computer. LOL )
The two plots are nearly identical. Good catch Grant
Here's the plot for 2 LAB12 loaded cabs.
If I subtract 6dB from the same points on that plot, I get results that are very similar to the other plot anyway. Do it yourself if you don't believe it:
With the transposed LAB12 results, the 3012LF is still considerably ahead
+3dB at 45HZ, +5dB at 50Hz, +5dB at 60Hz, +5 dB at 70Hz
...and look to be slightly worse than the numbers I came up with for the Delta 12LFA:
+3dB at 45HZ, +4dB at 50Hz, 5dB at 60Hz, 3-4ish dB at 70Hz
So, while there was a mistake (good catch on that BTW) the results aren't any better than what I previously thought either. Upon realizing my mistake, I had really hoped they would be.
Maybe I'm on the 3rd train, the Scenic Express...