Maybe it was passing short ripple peaks that challenged it over time.
It’s been on in idle mode overnight en everything looks stable. Vin goes up and down some 100-150 mV with mains fluctuations and Vout is 5,075, what I dialed it to yesterday.
Now playing, sounds great. If there is improvements, which I think, is hard to tell since I have products in the chain later that needs to be changed to less noicy stuff. Maybe I can hear some blacker background, or maybe I’m just happy it works 🙂
Also I don’t know how to measure it since it has no analogue in.
Now to a combined PSU for this and an L-Adapter fed network switch in one case to be constructed.
Some pics how the ”Node Nano Docking Adapter” looks like lidded. I think it became pretty slick.
Ethernet and Mogami 2524 passing right thru, the Mogamis I locked with pass through lock things, usually used on boats for watertight cable pass through.
Will make a shielded interconnect current umbilical as well.
Now playing, sounds great. If there is improvements, which I think, is hard to tell since I have products in the chain later that needs to be changed to less noicy stuff. Maybe I can hear some blacker background, or maybe I’m just happy it works 🙂
Also I don’t know how to measure it since it has no analogue in.
Now to a combined PSU for this and an L-Adapter fed network switch in one case to be constructed.
Some pics how the ”Node Nano Docking Adapter” looks like lidded. I think it became pretty slick.
Ethernet and Mogami 2524 passing right thru, the Mogamis I locked with pass through lock things, usually used on boats for watertight cable pass through.
Will make a shielded interconnect current umbilical as well.
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I have to revert what I said earlier about not noticing improvements.
Studio guys says that any changes to the sound reproduction takes them weeks to adapt to. The brain needs to tune in. I am very much like that. Changes, weather good or bad makes my brain puzzled at first.
After a couple of hours I usually can identify what I hear exactly. And then it takes a day or two to start appreciating it.
What I hear is clearer highs and high mids. Transients getting through easier.
At first listening my aging unadaptable fat blob translated that to: ”wait, what, did I get less base?”
It’s clearly a change 🙂
Studio guys says that any changes to the sound reproduction takes them weeks to adapt to. The brain needs to tune in. I am very much like that. Changes, weather good or bad makes my brain puzzled at first.
After a couple of hours I usually can identify what I hear exactly. And then it takes a day or two to start appreciating it.
What I hear is clearer highs and high mids. Transients getting through easier.
At first listening my aging unadaptable fat blob translated that to: ”wait, what, did I get less base?”
It’s clearly a change 🙂
Been stuck in my armchair mostly all day between meetings and I can already say now when the clouds have dispersed some more that this was one of the single biggest improvements I have ever done to an audio device.
The bass is still there (of course) but it is firmer and punchier. Vocals is very revealing in the details. I listened to Tuukka Haapaniemi, Club For Five singing Brothers in Arms and it really grabbed me by the spine, continued with some jazz and female vocalists and it nailed everything. Lastly Billie Eilish, When we all fall asleep and it kicks hard as steel.
I should be making a PSU case but I can’t make me leave the listening chair.
Lovely!
The bass is still there (of course) but it is firmer and punchier. Vocals is very revealing in the details. I listened to Tuukka Haapaniemi, Club For Five singing Brothers in Arms and it really grabbed me by the spine, continued with some jazz and female vocalists and it nailed everything. Lastly Billie Eilish, When we all fall asleep and it kicks hard as steel.
I should be making a PSU case but I can’t make me leave the listening chair.
Lovely!
Hi, that is 120W and its going to stress much. Spec is up to 100W with very good sinks etc. Like in the post above, everything counts for losses when with high amperage. Need heavy copper PCB, quality connections and wires, original parts.
hi Salas,
did someone build a negative voltage version?
I purchased the complementary pair of transistors and the LM334.
The wiring of BJTs is simple, but I don't know how connect the diode.
Can you help me?
Thanks
did someone build a negative voltage version?
I purchased the complementary pair of transistors and the LM334.
The wiring of BJTs is simple, but I don't know how connect the diode.
Can you help me?
Thanks
Hi,
I did not also publish a mirror negative version. I don't know exactly how you have in mind to do it. What is your modification schematic? Somebody could stack dual positives when using dual independent secondaries trafo, with a virtual ground output midpoint like when we do symmetric supplies out of batteries or lab PSUs of independent power channels.
I did not also publish a mirror negative version. I don't know exactly how you have in mind to do it. What is your modification schematic? Somebody could stack dual positives when using dual independent secondaries trafo, with a virtual ground output midpoint like when we do symmetric supplies out of batteries or lab PSUs of independent power channels.
Hi Salas,
I build the negative voltage of L Adapter ..... and it works!
The schematic is the one of post #624 by prasi, the Indian guy.
In that schematic there was an error in the position of 12R resistor, that you have pointed out.
The resistor have to be located between V- and R and NOT between R and V+
I used the NPN BJT NJW0281G (complementary of NJW0302G) and the PNP BJT MJE15031 (comp of NJW15030).
Voltage ref with Zener + leds for -33V at 200mA
I put the dual L Adapter before the ultrabibs in my preamp, cause L Adapter + ultrabibs have better sound that only ultrabibs.
Buona notte
Orelli
I build the negative voltage of L Adapter ..... and it works!
The schematic is the one of post #624 by prasi, the Indian guy.
In that schematic there was an error in the position of 12R resistor, that you have pointed out.
The resistor have to be located between V- and R and NOT between R and V+
I used the NPN BJT NJW0281G (complementary of NJW0302G) and the PNP BJT MJE15031 (comp of NJW15030).
Voltage ref with Zener + leds for -33V at 200mA
I put the dual L Adapter before the ultrabibs in my preamp, cause L Adapter + ultrabibs have better sound that only ultrabibs.
Buona notte
Orelli
Was discussed five years ago. I even debugged it... Forgot about it. So it worked OK. Congrats. Post your build's picture maybe?