Topic: 24-bit on the JB3

[dano420]

So I just got a JB3 and and decided to open it up and take a look under the hood. I found this IC on board, http://www.semiconductors.philips.com/pip/UDA1380.html which looks like it does the A/D conversion. After reading the datasheet, it DOES support 24-bit! What it does not support is 96khz sample rates but will do 48khz. It also appears that this IC is indeed firmware driven so maybe it can be hacked to do 24-bit unless there's some kind of hardware clock that only allows it to do 16-bit. Any ideas?

Dan

[Diggin]

we did confirm over the weekend at 10klf that it can play back 24/96 files, not sure what it does to them but Swanny was able to play the files I put on there, so maybe there is hope

[dano420]

Yeah, if you look at the datasheet, it'll do 96khz DAC just not 96khz ADC. It seems that a little firmware mod might make this thing do at least 24/48. I did notice that the chip will only do 24-bit on the output and a maximum for 20-bit on the input. The optical-in may only do a maximun of 20-bit if the signal goes through this chip (??). Line-in looks like it would be converted to the full 24-bit. Now all we need is the firmware source.

Dan

[coloartist]

That would be awesome if I could use my jb3 as a backup for my M-audio flashtraker, whenever it comes.

[jeromejello]

jb3 firmware = tapir holy grail

[JackoRoses]

jb3 firmware = tapir holy grail

we just need a music enthusiast computer geek over in norway to reverse engineer it and release a "upgraded version" for tapers..

[dano420]

I did a little searching on the net for any "custom" firmware revisions and haven't found much yet. When I opened up the JB3, I was wishing to find a chip similiar to a cirrus ADC that would take a hardware switch to pop it into 24-bit mode. No such luck here...... Maybe after reading the datasheet 1000 times, there could be a simple solution. We'll see! A simple mod will make the JB3 a VERY cheap 24-bit rock and roll machine!

[SonicSound]

Are we dreaming here 

This would be to good to be true

[Simp-Dawg]

with the heat issues the jb3 experiences, i would probably not want to run it in 24-bit mode, even if it could be done.

[bgalizio]

with the heat issues the jb3 experiences, i would probably not want to run it in 24-bit mode, even if it could be done.

Agree. Plus, so long as the new M-Audio device works well, wouldn't you want a smaller device?

[Simp-Dawg]

yup!  solid state is better anyways.

[Swanny]

It sounds like its working hard just to play back a 24 bit file. I don't think it could keep up to record it.

[Simp-Dawg]

yeah i bet power would be an issue too.

[coloartist]

If it worked as a backup, that would be great, though.

[JackoRoses]

if no one ever tries it, no one will ever know.
ppl record 24 bit to a laptop hard drive which is no more that what the jb3 is.
I would like to see a revised firmware that could open up that possibility.
If it does not ever materialize oh well, solid state is here anyway.