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-   -   XMOS-based Asynchronous USB to I2S interface (https://www.diyaudio.com/forums/digital-line-level/188902-xmos-based-asynchronous-usb-i2s-interface.html)

qusp 17th April 2012 03:27 PM

hmm, well considering that the original 2300mah battery isnt normally marked like that and is actually ANR26650M1A (ANR26650M1B 2500mah one is the new model and the A is nolonger for sale from the manufacturer) I find this listing dubious. also notice he has listed it in his ad as being AR626650 maybe a typo, but this all makes me rather suspicious

BrianDonegan 17th April 2012 03:31 PM

A bit more OT, but A123 is about to go belly-up, so get them now if you want them.

qusp 17th April 2012 03:33 PM

thanks Brian, i'll have to do that. wow I guess they expanded too fast/overcapitalised. strange because afaik nobody has a better product/process

BrianDonegan 17th April 2012 03:36 PM

Financial mismanagement, resulting in a class-action lawsuit...

A123 Systems Inc (AONE.O) Key Developments | Reuters.com

audiodesign 17th April 2012 03:45 PM

My design using XMOS module

USB DAC 2 - Hi-Resolution System

qusp 17th April 2012 03:57 PM

Quote:

Originally Posted by BrianDonegan (https://www.diyaudio.com/forums/digital-line-level/188902-xmos-based-asynchronous-usb-i2s-interface-post2988963.html#post2988963)
Financial mismanagement, resulting in a class-action lawsuit...

A123 Systems Inc (AONE.O) Key Developments | Reuters.com

thanks, it also appears an american factory worker/team at the michigan plant responsible for calibration of alignment on one of the 3 welding machines that caused the recall of $55 million in packs, just as several EV's from major manufacturers were hitting the market, may be looking for another job? funny it seems all of the packs manufactured in China have been ok.... i'm not making a sweeping statement there, but it flies in the face of many peoples opinions.

yeah they over estimated the needs and have too much invested in production lines that arent needed yet. I guess they banked on EVs being more popular by now. this wasnt their first problem, last year was bad for them, again related to expanding too last without enough experienced workers on the floor and bad yield

anyway we'll leave it there, thanks for the info, i'll have to get some of those prismatic packs i've been planning on, seems even the defective packs are going to be fine used singly, its when they are pressed together into large packs that shorts are created due to misalignment. hopefully that means some cheap singles =)

sounds like a group buy is on the cards while we still can, logistics on a bulk lithium battery buy would be significant though

Edmond Stuart 17th April 2012 04:32 PM

AR26650
 
Quote:

Originally Posted by qusp (https://www.diyaudio.com/forums/digital-line-level/188902-xmos-based-asynchronous-usb-i2s-interface-post2988944.html#post2988944)
hmm, well considering that the original 2300mah battery isnt normally marked like that and is actually ANR26650M1A (ANR26650M1B 2500mah one is the new model and the A is nolonger for sale from the manufacturer) I find this listing dubious. also notice he has listed it in his ad as being AR626650 maybe a typo, but this all makes me rather suspicious

Of course that was a typo, what else?!
Indeed, they look different than a AR26650M1A, but, apart from the solder tabs, the same as in the DeWalt 36V battery packs. See: Dissecting DeWalt 36V Packs (A123 Systems)

Quote:

Originally Posted by BrianDonegan (https://www.diyaudio.com/forums/digital-line-level/188902-xmos-based-asynchronous-usb-i2s-interface-post2988950.html#post2988950)
A bit more OT, but A123 is about to go belly-up, so get them now if you want them.

I didn't know that. Perhaps I better should keep the batteries myself.;)

Cheers,
E.

qusp 17th April 2012 06:23 PM

my apologies Edmond, I didnt know it was our people listing them, you have to realise these are a very big market for A123 fakes and combined with the model number printed on the battery itself being wrong, the outer cover has different markings to the A123 cells, the solder tabs are different and they are the old stock that hasnt been sold by A123 for nearly a year. it all adds up to signs that would normally make me stay well away as they could very easily, if they were A123 at all, be reclaimed grey market cells with new solder tabs soldered on

i'm not saying you did that, just that looking at the ad I would be sus

but we really should take this to PM if we continue

audiodesign 17th April 2012 07:07 PM

Released the running firmware on my web page to use AD1955.

I have set the DAC chip with this method:

1) for 44 and 48 KHz Interpolation = 8x MCLK mode = 512 x Fs
2) for 88 and 96 KHz Interpolation = 4x MCLK mode = 256 x Fs
3) for 176 and 192 KHz Interpolation = 2x MCLK mode = 256 x Fs

It should be ok, Lucian can confirm.

Lorien 18th April 2012 10:14 AM

@ audiodesign thank you for all your work and for sharing your results with us! Regarding your post above, I guess the latest statement should be:
3) for 176 and 192 KHz Interpolation = 2x MCLK mode = 128 x Fs still, I have to take a look at that DAC... for now it's only a suggestion. Feel free to correct me.

Kind regards,
L


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