Taowolf51
Headphoneus Supremus
- Joined
- Jul 6, 2009
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That -2 dB correction for 6k and 15k is perfect IMO even when I'm not using any mods and a brighter DAC/amp. Does the +8 dB at 10hz make any difference at all? I tried adjusting different values on 10hz but have not noticed any difference, making me thing HD800 doesn't get past anywhere near 20hz. Also, I'm assuming that when we are adjusting certain frequencies, like the 6.5k, that -2 applies to a certain extent to the nearby frequencies as well? Like the range from 5-8k will also get a dip as well? Also, why do you have a -9 dB setting for pre-amp? It just make everything quieter.
So Equalizer APO is a parametric EQ, which works differently from something like a graphic EQ. Parametric EQ's give the user more control and don't have the "wavy" response graphic EQ's do.
The way they work is through a base frequency, a strength, and a Q value. The Q value is the key here, what it does is it makes the curve sharper or more smooth. Higher Q values provide a sharper curve, while duller EQ values provide a smoother curve.
Here's an illustration:
When used in practice (for example), the 6k spike is a spike, so it needs a sharp EQ cut to compensate. You'll notice the 6.5k band I created has a Q value of 3, which is pretty sharp. It allows me to be more precise with cutting that peak out without affecting surrounding frequencies.
However, the 10Hz band has a Q of 0.3, which is very dull. What that allows me to do is to have a very smooth curve that starts at +8db at 10Hz, and smoothly descends to +0db at about 70Hz, which mirrors the HD800's bass rolloff. Combining the two equals flat bass extension down to 10Hz with no bass rolloff.
When in the Peace GUI, click on the button that looks like a frequency response graph with a green line (on the middle-right of the window). This will open up a graph that shows you visually what the EQ bands are doing.
Oh, and about the preamp setting, always set your preamp to the negative of 1db higher than your strongest frequency boost. For example, the highest boost in mine is that +8db 0.3Q at 10Hz, so I set the preamp to -9db. What that does is actually makes the EQ cut frequencies rather than boost them, which is necessary to prevent distortion. You don't want your EQ causing clipping, which it certainly can do if you boost frequencies rather than cut them. Just turn your amp up to compensate.
Amazing choices with the sample pieces btw, those flashbulb soundtracks are absolutely amazing with your EQ. I actually had to turn off the Xbass of my iDSD because the bass was getting a bit intense for my liking and I felt that it almost muddied the rest of the frequencies. Just added those soundtracks to my spotify playlist
Glad you like them! The Flashbulb (Benn Jordan) always makes incredible music. I'd recommend checking his other stuff out, each album (especially recently) is very different and he's always experimenting. I have a massive amount of respect for the guy.
And you shouldn't necessarily need that bass boost anymore with the parametric EQ. I've set up flat bass, and you can boost it yourself if you want the bass to be north of flat. The parametric EQ should give you a lot more control over how much bass you want and where.