...
Ideally, it be better to merge our "XMOS development board", Superior PCB & Clock PCB onto one board and this becomes a direct MDAC PCB replacement PCB - reusing the rear panel & Chassis. ...
do you have a link to the pcb?Dual mono DAC like on the XMOS PCB
Ok -so now we really are getting back to an mdac 2. Does this involve the original ess dac chip or is that being replaced/duplicated one per channel too?
Sorry if I have missed all of this.
So what is missing from the fdac design apart from the discrete output stage fpga and dsp?No, we would use the new dual Hyperstream2 ESS devices.
You can see the dual DAC's above the headphone Jack on our XMOS test PCB:-
https://dl.dropboxusercontent.com/u/86116171/Dual ESS Mini DAC.jpg
Adam,
The trouble with the superior PCB's is the cost - and that we are "so close" to a complete replacement DAC PCB.
Ideally, it be better to merge our "XMOS development board", Superior PCB & Clock PCB onto one board and this becomes a direct MDAC PCB replacement PCB - reusing the rear panel & Chassis
The final decision comes down to the listening tests of the merged Superior + XMOS PCB and the just issued Clock circuit and what to do for a PSU - as the MDAC's current PSU solution is a limiting factor - which will become even more limiting with the mew PCB.
If we de go ahead, then we can have the first PCB's within a month as basically all the hard work has already been done.
Its a section of the FDAC's "Advanced Clock" added to the MDAC:-
1. A "Test PCB" to gain "Working experience" of a important section of the FDAC design as the Superior PCB was for the Analogue stage.
2. Offer a future replacement / upgrade for the failed MDAC Crystals (clocks).
3. Will Morph onto the FDACLite later
The few Superior upgraded MDAC's will also be fitted with the new Clock circuit to gain "field experience"....
Hi John
Is now a good time to send in my MDAC for repair and capacitor replacement? I'm also interested in having the upgraded clock circuit fitted since my crystal is suspect.
Many thanks
mrflibble
Yes, if you ship over the weekend, then next week will be a good time to look at your DAC - once I have the Clock PCB's.
John
If this single combined board does come together do you envision that it would be a DIY drop-in for someone with a bit of soldering experience?
So what is missing from the fdac design apart from the discrete output stage fpga and dsp?
I have to admit to having some difficulty keeping up with whether this is the same as the f-dac lite or different. Sorry for all the questions but am very interested.
Adam,
I have 4 Superior PCB's - two are spoken for.
The trouble with the superior PCB's is the cost - and that we are "so close" to a complete replacement DAC PCB.
Ideally, it be better to merge our "XMOS development board", Superior PCB & Clock PCB onto one board and this becomes a direct MDAC PCB replacement PCB - reusing the rear panel & Chassis.
On the XMOS development board I was able to design critical sections such as the Clock circuit in my CAD system and then Jarek "imported" the design into his CAD system so that I only need to design the critical sections then Jarek is rapidly able to spin a design.
The beauty of this approach is that we can have the PCB manufactured here in Europe with a vendor I've been in recent contact with.
The final decision comes down to the listening tests of the merged Superior + XMOS PCB and the just issued Clock circuit and what to do for a PSU - as the MDAC's current PSU solution is a limiting factor - which will become even more limiting with the mew PCB.
If we de go ahead, then we can have the first PCB's within a month as basically all the hard work has already been done.
Yes, if you ship over the weekend, then next week will be a good time to look at your DAC - once I have the Clock PCB's.
Well, you have there already a box with my 2 MDACs ... Any look at those?
I know what you mean. The MDAC is a great unit for it's pricepoint. I wasn't sure what to expect from FDAC until I heard the Superior MDAC. Exciting times ahead!