The Best DAC is no DAC

[nautibuoy]

Good news Felipe.

Does that mean you're now getting good music and no noise?

Ray

Well fixed the noise adding LC filtering at the PSU, now CLC 2.200uF 2mH 1.000uF. Salas information: FF rather easily picks EMI

 

[merlin el mago]

Yes, now with FF I have more gain, but I like more the SE LP filter: sounds more natural to my ears.

 

[shadowlight]

Couple of questions on the boards.

How are folks separating the two boards and making the correction that Ray had pointed out? Are you using a exacto knife to cut the trace and separate the boards?

Any recommendation for power supply and case? Working on putting the Element14/Mouser order together and would like to include everything in one order.

 

[nautibuoy]

Couple of questions on the boards.

How are folks separating the two boards and making the correction that Ray had pointed out? Are you using a exacto knife to cut the trace and separate the boards?

Any recommendation for power supply and case? Working on putting the Element14/Mouser order together and would like to include everything in one order.

I use a Dremel with a cutting disc to separate the boards and to cut the tracks for the correction; see the pictures I posted a way back.

Felipe's experience has highlighted the need for a good power supply, certainly for the FlipFlop board. I'm getting good results with these supplies;

http://www.diyaudio.com/forums/vend...ow-noise-ldo-regulator-pcb-5.html#post4239877

Ray

 

[nautibuoy]

Yes, now with FF I have more gain, but I like more the SE LP filter: sounds more natural to my ears.

Interesting. I'm planning to compare the SE and FF boards with my TVCs as I've been wondering about their relative performance.

 

[merlin el mago]

Let us know your subjective opinion Ray.

Felipe

 

[bitinhvi]

Hi Ray, is there any SE board with part left?
Thanks.

 

[francolargo]

Group Buy Update: Attached is an updated spreadsheet showing who has told me that they have received their boards. Please let me know when you receive yours. Thanks.

Ray

Board received - sorry about the tardiness, I've been focused elsewhere

 

[nautibuoy]

Hi Ray, is there any SE board with part left?
Thanks.

Yes, I have PCBs available, I will PM you when I find the shipping cost.

Ray

 

[Dimdim]

Well fixed the noise adding LC filtering at the PSU, now CLC 2.200uF 2mH 1.000uF. Salas information: FF rather easily picks EMI

Are you measuring at the FF's power terminals?

Instead of a CLC filter you could try not using the Ref-D's sense wires (connecting S to F at the reg's output) and see how it measures and sounds.

 

[merlin el mago]

The pic is using only connecting two wires between Reflektor-D & FlipFlop.

 

[merlin el mago]

Yes the FF power terminals.

 

[merlin el mago]

Infor for WaveIO USB-I2S owners.

I2S_BCLK = DSD_CLK only for FlipFlop users
I2S_LRCK = DSD_DAC0 =left
I2S_DATA = DSD_DAC1 =right

Attached pics WaveIO, important when using isolated I2S outputs (recommende) to power with other PSU no shared with the WaveIO power or the self powered USB.

 

[skrstic]

Its time to finish. Be patient with me.
Questions:
1. LPF. Got a 15nF (WIMA MKS 4 0.015/250 F4, any recommendations) and 270R (39.297 Hz) or 300R (35.367 Hz).
2. Can I power it from USB. Use USB switch on JLSound board and power it with dirty power from USB. I plan to bay decent linear power supply but this is to test.
3. Can some one explain me purpose of board's jumpers.

PS. Sorry four my English.

 

[merlin el mago]

270R
What board are you using SE or FlipFlop?

 

[skrstic]

Both

 

[merlin el mago]

???

 

[merlin el mago]

You need a very clean PSU for Flip Flop board.

 

[skrstic]

I have SE and FF. Why tray only one? Best sounding stays.

 

[merlin el mago]

It depends of the gain structure of your system. http://www.diyaudio.com/forums/diyaudio-com-articles/186018-what-gain-structure.html