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Old 12th April 2010, 01:00 AM   #1301
Salas is offline Salas  Greece
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The baby led shunt voltage reference must be a positive contribution too? Did you ever get to hear the LSPD with and without it? The glow through the mesh cover at night must be well, hypnotic.
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Old 12th April 2010, 01:35 AM   #1302
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I'm not sure, I would like to think that it contributes positively, surely it does. The slightly low voltage output may be helpful here also, pushing the "pot" resistance up, easing source impedance constraints just a bit? Still drives these buffers in parallel with no problem at all (110k input). This pre hides nothing, tremendous resolution, and is showing me weaknesses with the rest of my system, poor source mainly which will get attention at some point. Another area of interest, different music / production technique is more "contrasted" than before. Hard to explain but I think it's another clue that the system has taken another step or two up, and is "getting out of the way". Does this make sense?

I'm certainly hypnotized and mezmerized..... several hours per night in fact for the past month....
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Old 12th April 2010, 01:41 AM   #1303
Salas is offline Salas  Greece
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The more you can differentiate score clues it means that the brain is at better ease with the sonics. Yes, surely positive.
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Old 12th April 2010, 03:13 AM   #1304
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At 100mA you get some of the benefit. If you can get some MKP 1837 Vishay 10n or FT-1 22nF CCCP Teflon, just bypass the 5 string shunt 100uF lytics underneath pcb, keeping short legs. But not the output lytics. That one you may hear easy and decide, without hacking or altering visually the nice build.
Just to clarify, is bypassing the lytic better or replacing with a MKP of film cap? Is the capacitance important? Can solder to the ends of the LED chain instead of the lytic position?

You mentioned it doesn't sound its best until a couple of hours, why is this so? I'm not really in favour of leaving it on 100%, so any way to avoid this? Esp since bumping up the current to over 200ma will also reap benefits!
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Old 12th April 2010, 06:44 AM   #1305
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@william2001 - What's the spec of your transformer to power 2 buffers and the LDRs ?
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Old 12th April 2010, 08:31 AM   #1306
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You mentioned it doesn't sound its best until a couple of hours, why is this so? I'm not really in favour of leaving it on 100%, so any way to avoid this? Esp since bumping up the current to over 200ma will also reap benefits!
I don't think I am understanding your question, a way to avoid what? burn-in and reforming of capacitors?
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Old 12th April 2010, 09:43 AM   #1307
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Transformer is an Antek AN-1212, works great, completely silent.

12-0-12, 100VA

LDR supply / front panel indicators have their own diode bridge (MUR120's, same as the DCB1's)
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Old 12th April 2010, 11:33 AM   #1308
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Transformer is an Antek AN-1212, works great, completely silent.

12-0-12, 100VA

LDR supply / front panel indicators have their own diode bridge (MUR120's, same as the DCB1's)
And how the orange front LED does work? What is it purpose for?
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Old 12th April 2010, 11:44 AM   #1309
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please gift me layout pcb power amplifier lm 3886 complite with componen.my email antoryans@yahoo.co.id thanks b 4
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Old 12th April 2010, 11:49 AM   #1310
Salas is offline Salas  Greece
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Just to clarify, is bypassing the lytic better or replacing with a MKP of film cap? Is the capacitance important? Can solder to the ends of the LED chain instead of the lytic position?

You mentioned it doesn't sound its best until a couple of hours, why is this so? I'm not really in favour of leaving it on 100%, so any way to avoid this? Esp since bumping up the current to over 200ma will also reap benefits!
Replacing is purer than bypassing. To the ends of chain is better if no lytic is present. 0.22-1uF if alone, 10nF-22nF if a lytic bypass.

I could think of scenarios, but it will be pseudo science since I got no data. It seems to sound better later from power on to me and other people. That is the loose idea. Check for yourself, maybe its other things in our chains too.
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