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Old 28th June 2009, 04:44 AM   #141
spencer is offline spencer  Hong Kong
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All,

D1V33 with PCM1704U converter board is completed.

Note that PCM1704 is better resolution than PCM63. To rate them subjectively, 1704 is higher resolution while PCM63 is more musical. Both DAC chip sound very good.
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Old 29th June 2009, 07:06 AM   #142
spencer is offline spencer  Hong Kong
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I did not forget all the D1V3 users here and thus I offer an upgrade of the Jfet IV (attached) but I only provide the critical parts (K369BL x 8, Resistors x 8 and VR 100 ohm x 4). The cost is $13 include shipping to worldwide.

The upgrade improve the D1V3 by about few points but I would say it is a better upgrade from PCM63P-K to PCM63P-K2, KY or Y.
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Old 29th June 2009, 06:11 PM   #143
Kamel is offline Kamel  Germany
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Hi Spencer,

can you provide me a PMD100 Board + Chip.

I wanna play with PMD and SM5842.

Best regards

Felix
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Old 1st July 2009, 09:02 AM   #144
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hello

have you got a BOM with price for D1V33 with PCM1704U converter board ?

regards
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Old 1st July 2009, 11:19 AM   #145
spencer is offline spencer  Hong Kong
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pinial26,

I only provide PCM63PK chips at this moment.

The converter board I use is designed for PCM1702. For Pcm1704, the digital supply +ve and -ve pin must be reverse connection and thus I need to cut trace and solder two wires at the bottom. So there is no PCM1704 converter board available from me yet and I cannot offer any price.

Regards, Spencer
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Old 14th July 2009, 02:54 PM   #146
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Is there any dedicated thread about the building of this DAC ?
I have problems to get the 8.5Vdc for 2 ways at the step 19....
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Old 14th July 2009, 03:13 PM   #147
Kamel is offline Kamel  Germany
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Hi,

here is the thread: klick

Best regards

Felix
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Old 14th July 2009, 03:29 PM   #148
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Thx Felix.
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Old 14th July 2009, 09:42 PM   #149
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hello Spencer , its about half year passed untill today i finaly started solder both dv3 dac's , and find just now that new version is available.

I forget one thing, if your new pcb have more space, I am not able to put in any more seriuos metalized 0,1uf fil cap. wima MKS will fit but smallest wima MKP will not fir in with in pcb are only 2mm and wima MKP is 3-4mm (pcb pi spacing is 5mm and OK , height not important)

I think I may order one extra kit to compare.
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Old 15th July 2009, 12:56 AM   #150
spencer is offline spencer  Hong Kong
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The D1V3 and D1V33 pcb are same size, same mounting hole position, same connector position and use same size parts for the 0.1uF film cap, ie 5mm pitch and size3x8mm. If you have a bigger size film cap, some of the location near the jfet IV section may not be fitted. For bigger size cap, you have to solder on the bottom!

In D1V33, I change to Panasonic 0.047u 50V ECQ-V or ECQ-B (old version but bigger size) and I find most of the locations can be fitted.

MKP is more expensive and may be better for signal coupling but I think MKS or mylar cap is ok for supply decouple.

You can PM me if you are interested in the new version. Thanks.
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