Hello Everyone how are you all 🙂. My diy Lampucera has arrived. It has not come with any instructions. It has two power supply transformers I don't know where the one with yellow wires connects. As I look at everything to do with the dac it's starting to become clearer what to do and one of the things is ask a friend of mine who solders better than me to help me. To test it to see if it works do I need a metal case first and is everything I need to get it working in this kit I know I need a power cable to connect it to the on off power connector that comes with it.
https://www.ebay.co.uk/itm/18672783...46UT_E9QjS&var=&widget_ver=artemis&media=COPY
https://www.ebay.co.uk/itm/18672783...46UT_E9QjS&var=&widget_ver=artemis&media=COPY
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You don't need a metal case to test it. But you do need to make sure you have electrical safety.
For example, you need to make sure it is appropriately fused. You need to make sure there is no exposed HV that could accidently be touched (that includes for 220vac power). You should also have a "hum breaker" circuit for safe grounding while avoiding AC power ground loop problems. You should also know about safety practices for working around HV, and make sure any test equipment you may have is adequately rated for an high voltages which may be encountered.
If you know how to do all those things yourself, then fine. If you need help or advice then please for more information.
For example, you need to make sure it is appropriately fused. You need to make sure there is no exposed HV that could accidently be touched (that includes for 220vac power). You should also have a "hum breaker" circuit for safe grounding while avoiding AC power ground loop problems. You should also know about safety practices for working around HV, and make sure any test equipment you may have is adequately rated for an high voltages which may be encountered.
If you know how to do all those things yourself, then fine. If you need help or advice then please for more information.
Thank you Mark for your help I will be starting to build the dac today I have been trying to look at all the right information. I will be making sure it is not connected to the electricity when doing things to it. I live in the Uk do you know of any hum breakers I should get.
A hum breaker (aka ground breaker) is a circuit you have to make yourself. There is a bridge rectifier, a power resistor, and a capacitor:
In some cases the resistor may be as much as 100R.
In some cases the resistor may be as much as 100R.
Note:
The Earth wire into the device should connect to chassis directly, with a screw that is used for nothing else.
Therefore your ground breaker should connect to chassis with a second screw.
The Earth wire into the device should connect to chassis directly, with a screw that is used for nothing else.
Therefore your ground breaker should connect to chassis with a second screw.
My diy Lampucera kit is working I took it to a audio and light's shop about a 2 minute walk from my house and a Guy did it for free I was willing to pay he said bring some biscuits in 🙂. I did what I could do which involved also Praying 🙂 and now it's working Praise God 🙂. I plan to change the opamp and experiment with the tube buffer at some point but I will be seeing how it sounds compared to my SMSL sanskrit 10th mk3 dac how the lampucera it is at the moment. I imagine there will be a little burn in time before I can fully assess if this diy lampucera dac at the moment sounds better.
This is what it says in the information on ebay Analogy Opamp chip: 5532 I think that is a dual.
https://www.ebay.co.uk/itm/18672783...46UT_E9QjS&var=&widget_ver=artemis&media=COPY
https://www.ebay.co.uk/itm/18672783...46UT_E9QjS&var=&widget_ver=artemis&media=COPY
Try a LT1364 instead of the NE5532. Or a LT1361. Those were 2 of my preferred substitutes. Better sound, and both were stable in my V-DAC.
Why were these two your favourites what is it about these two did you like. Have you tried a hdam opamp.
I judge everything by the tonality of voices and acoustic instruments - how realistic are they?
Those had good tonality and were DIP8 so no adapter needed. In SOIC I liked AD8066 and OPA1612 but you need adapters.
Not tried HDAM. I'm now using singles in my PCM56 DAC where I have AD845s
Those had good tonality and were DIP8 so no adapter needed. In SOIC I liked AD8066 and OPA1612 but you need adapters.
Not tried HDAM. I'm now using singles in my PCM56 DAC where I have AD845s