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#331 |
diyAudio Member
Join Date: Jan 2008
Location: Italy
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Hi.
@nautibuoy: very interested on your pcb/schematic. Is it ok now? I've got a jlsounds usb interface, double supply, etc. Now it's time to go DSD. In my system (only digital volume), popless playback is mandatory, so i'm very interested in a mute relay. EDIT: is this ok? http://jlsounds.com/uploads/LME49710_schematic.pdf Last edited by iperv; 9th September 2015 at 05:35 AM. |
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#332 | |
diyAudio Member
Join Date: Jan 2008
Location: Italy
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Quote:
I don't understand in any way this schematic. How the relay works? Is it an high pass filter? EDIT: ok, from right to left, not vice-versa ;-) Last edited by iperv; 9th September 2015 at 05:46 PM. |
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#333 |
diyAudio Member
Join Date: May 2010
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Has anyone found a unit that can output balanced DSD?
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#334 | |
diyAudio Member
Join Date: Mar 2007
Location: Twin Cities, MN
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Quote:
Last edited by francolargo; 10th September 2015 at 04:14 AM. |
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#335 |
diyAudio Member
Join Date: Mar 2012
Location: Melbourne
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Hi Vladimir, HiFiMeDIY has a USB to I2S device with balanced DSD output
HiFime UH1 384kHz USB DAC, headphone amplifier and I2S/DSD interface Attached is the pin out. Alternatively you can use a flip flop (74HC74) to create your own balanced output. I've posted my circuit before but here it is again. I use this daily, it works a treat. |
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#336 |
diyAudio Member
Join Date: May 2010
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That looks good. Is it sold just as a board that could be used with an isolator? Not sure if that is necessary, please advise
And is there a flip-flop board out there for sale? Last edited by vladimirb0b; 10th September 2015 at 04:49 AM. |
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#337 |
diyAudio Member
Join Date: Jan 2010
Location: Somerset, England
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Just a quick note to apologise to anyone waiting for an update on my filter board; stuff happens in life and I've had very little spare time to spend on this project and associated aspects and I have not resolved the mute relay issue.
Things have now moved on in this popular DSD subject area so I am not going to spend any more time on my project and instead will hook my wagon up to Acko's new project; Direct Drive DSD Cheers Ray |
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#338 |
diyAudio Member
Join Date: Dec 2011
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Thanks Ray.
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#339 |
diyAudio Member
Join Date: Jul 2011
Location: Sofia, Bulgaria
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Hello everyone,
I have the JLsounds board and after reading the whole thread, I'm impatient to try this out. I suspect the passive output filter must be very well built to filter out the leftover MHzs of DSD. A resistor/inductor with very low parasitic capacitance and a capacitor with very low parasitic inductance, maybe tantalum type. A transformer is not enough IMHO. For now, I imagine a RLC LP filter with 16R , 30uH and 470nF. The R is there to damp the Q of the filter to ~0,5 |
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#340 |
diyAudio Member
Join Date: Oct 2009
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Dears ALL,
this is my personal version of Valve Preamplifier for DSD - DAC. In this special Preamplifier there only a capacitor of uncoupling among input and output. Is very important that all capacitors not polarized are of high quality. The polarized capacitors are long life and for use to 100Khz (for DCDC converter). Thanks and All the Best, JEDY |
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