Sony NWZ-A72x/A82x - possible hacks & mods?

[silverknit3]

i played with the treble settings too. its impossible to listen to it with the fc at 0. i felt as if it was too hissy. have you played with the bass settings? they noticeably reduce the if you lower the bass fc from anythign besides 0. Does anyone know what fc stands for?

 

[TheRH]

Will this work on the 600 series?

 

[toxicsweet]

Quote:

Originally Posted by silverknit3 /img/forum/go_quote.gif i played with the treble settings too. its impossible to listen to it with the fc at 0. i felt as if it was too hissy. have you played with the bass settings? they noticeably reduce the if you lower the bass fc from anythign besides 0. Does anyone know what fc stands for?

Treble FC can't be 0, look again. The db can be 0/1.5, and FC can be 5,7,10,15kHz. FC means frequency cut(the lowest frequency threshold of the treble gain). On the other side, FC of the bass gain is the highest frequency which will be amplified.

So, my setup is:

DAC BASS GAIN

0.0

DAC BASS FC

100Hz


DAC TREBLE GAIN

1.5

DAC TREBLE FC

10KHz

That pretty much solves the sibilance problem, and adds plenty of bass too. Thats with the stock headphones, so YMMV.

 

[silverknit3]

ahha thank you forpointing that out. i kept imagining in my head the gain and fc options switched. the treble fc at 1.5khz changes the sound and reduces the sibiliance, i tried your set up with shure SE210's but it sounded as if the bass wasnt as dragged on. changing the fc to 250khz changes the sound and makes it more bodied in my opinion. what are your takes on it? oh and if you're interested in overly exaggerated bass from the stock headphones tell me and ill post a DIY (;

also: if you use a custom EQ whats your settings?

 

[1UP]

How would these settings be any different from what you can do via the EQ menu?

 

[ShinyFalcon]

You can limit how far Clear Bass will effect the frequencies, how loud, etc.

 

[silverknit3]

i find that the dac is more refiend tunign opposed to EQing. I suggest you find an EQ setting you really like and fine tuning it from there. If you are an audippurist then set it flat and tune it so it sounds as realitstic as possible.

 

[1UP]

OK got it.

With my ATH-CK7s, also agree Bass 0db @ 100hz and Treble 1.5db @ 10khz is a pretty nice little tweak.

 

[silverknit3]

when you change the fc from say 100 khz to 250 khz what exactly is happening?

 

[1UP]

Just changing the corner frequency of the low-shelf filter.

 

[toxicsweet]

Quote:

Originally Posted by silverknit3 /img/forum/go_quote.gif i find that the dac is more refiend tunign opposed to EQing. I suggest you find an EQ setting you really like and fine tuning it from there. If you are an audippurist then set it flat and tune it so it sounds as realitstic as possible.

Look at this thread:
http://www.head-fi.org/forums/f15/so...-using-312545/
Somewhere in the middle of the page you can find my long post with my custom EQ and some reasons for that. I must say, though, that I've tuned that setup before I tuned the DAC gain through the test menu. So when I tuned the DAC gain, the sound become "smiley"-ish, as both of the ends became boosted much. Its very bright, with nice bass. The mids can be a little bit recessed, though. If you don't like the somewhat recessed mids, try something else.(they are not THAT recessed though)

Quote:

Originally Posted by silverknit3 /img/forum/go_quote.gif when you change the fc from say 100 khz to 250 khz what exactly is happening?

Man, its Hz, not kHz. Even bats cannot hear 250kHz.

So when you change from 100Hz to 250Hz, bass becomes too fat, loses the punch and definition. Thats because the stock headphones have lower frequency response at 50-100Hz than at 200-250Hz. So you need to boost only the frequencies up to 100Hz. But, for some kinds of music - jazz, ambient, some ballads, you may appreciate the added warmth of the boosted frequencies up to 250Hz. Thats why I fiddle with the EQ and test menu more than I browse the songs.

 

[silverknit3]

haha again thank you for corrections. consdierign shure se210's are a little lacking in bass its nice to hear that extra boom. i must say that listening to my a818 brings smiles to my face and perhaps my friends as well. it sounds so clear and coherent tis unlike anything i have ever done. maybe if i get headphones with too much bass i'll tone it down to 100 hz.

 

[mdsjack]

hi guys, is the line-out selection via testmenu kept also when returning to the normal usage? I need to know before trying entering the test mode.

Also, I've found the official kernel files of the firmware, so if you guys are programmers, may edit the firmware yourselves:
Sony Global - Source Code Distribution Service

Does anyone know how to contact the japanese guy who made the custom lineout cable?

 

[silverknit3]

what would firmware changes possibly allow?

 

[mdsjack]

anything from the interface to anything the internal chips allow.

I think gapless playback, sound imporvement (or possibly a brand new equalizer), line-out via audio hp jack (maybe), maybe audio deleting (if it doesn't conflict with something else), definitely changing the avls max voulume, ect.