Taking orders :)

I think i'm late to the party, is this the 'shut up and take my money' thread for the BH DAC? If so, i'll have to sign up, it'll be hard to resist swapping my John Westlake for a John Swenson ;)
 
I 2nd that motion to rename this thread to

shutupandtakemymoney_zps3bbbd52e.jpeg
 
Looks like PS Audio is going the fpga route in its newly announced dac.  http://www.psaudio.com/wp-content/uploads/2014/02/PS-Audio-DirectStream.pdf  What do you all make of described conversion of all signals, pcm included, into 1-bit dsd?
 
John emailed me over the weekend that he had the production board up and running.
 
That would not be a good choice. Really, you shouldn't be charging LiPos indoors at all. They really are dangerous.

The right chemistry for this application is Lithium Iron (LiFe). Unlike Lipos, they do not explode when charged at too high a voltage or current.

Natural Sound said:
A lot of my Ham Radio buddies have converted from SLA to LIPO batteries. They are smaller and lighter in size for equal or larger capacity. Not sure about the cost but I believe the LIPO's cost a little more.
Click to expand...
 
Hi all... I've been away from the Bottlehead sight for a long while, and was wondering what the status, if any, about the Bottlehead DAC that's been in the works for a long time. I hope everyone has been doing well.
 
Steve Reese said:
Hi all... I've been away from the Bottlehead sight for a long while, and was wondering what the status, if any, about the Bottlehead DAC that's been in the works for a long time. I hope everyone has been doing well.
Click to expand...

The message from Doc B on 3/10 is the latest update.
 
Here is the status: I had it playing music almost two weeks ago, but there were issues, such as not following sample rate changes properly and not starting when the FPGA filter was turned on. I have been working like crazy on these and have them all fixed, but somewhere along the line I broke something and have a strange corner case. If the DAC is on and you plug in an S/PDIF cable from a transport that is already sending out data anywhere from 2-5 minutes later the output gets highly distorted for about 5 seconds, then everything is fine from then on.

This is tough to debug since it happens randomly, but often enough to be not good. I want to get this fixed before I release it. I'm going to be working on this full time for the next couple days and hope to get it fixed. (and not break anything else!)

The final thing is to get the new filter encoded into the DAC, this takes a good part of a day, so I hope I can get the above problem fixed soon so I can get filter added and get this to Doc next week.

Even with the old filter it sounds fantastic, but with the new filter (running it on a computer to try it out) it's really amazing.

John S.
 
The old saying is that it is hard to get Engineering to let go of their second best design to get it into production.  The best design is always being developed.
 
It's all working now, I have the corner cases all working, it just works with everything I'm throwing at it now. I just finished getting the new filter installed. WOW, I thought the old one sounded good, this is over the top, I'm running out of words to describe it. I'm listening to a piece right now that I have heard thousands of times (it's one of my favorite test tracks) and I am hearing a bunch of instruments in the background that I never noticed before, it's amazing.

So all that is left is to hack up Doc's board. The assembler put the wrong part on the board and I have to hack in another chip to deal with this.

Then I'll send it out. So it might be tomorrow or at worst Wednesday for shipping to Doc.

Whew another song just started and I got goosebumps. The bass on this is amazing.

Now that everybody is drooling I'll sign off.

John S.
 
>>> ring ring
> Hello, this is the bank manager speaking
>>> yeah you and I need to have a little talk about a DAC
>  :o
>>>  8)
 
Subscribed as well!

I have yet to finish my Crack/Speedball kit, but knowing this is on the horizon may be all the impetus I need  :)
 
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