Get rid of as many connections as possible on your output line. I have solderbefore cable directly on the output attenuator to eliminate reflection creation points.
And if you want a perfect 0,5V output, you need a 14.2dB attenuator.
I am using a Tee pad with (50 series, 32 shunt, 50 series). I have not tried the 50-75 yet.
I have selected the Tee pad because of lower resistance values in series with the signal. Jarek is very fond of his 50-75 pi-pad as well, so I would give it a serious try as well.
You can check my oscilloscope testing here
http://www.diyaudio.com/forums/digi...ansport-shigaclone-story-722.html#post3494010
Thank you for sharing your setup. I've removed the coax attenuator and put back the lpad I was using before. I will be playing with jareks 50-75 pi-pad using caddocks and shinkoh sometime this week.
Ive also replaced the c906 with russian k75 0.1uf and made an improvement. Soundstage is deeper and wider, more dynamic and smoother. I like it so far. Im waiting for a duelund 0.01 uf for the c906. Will report back with the results
Hi Dimitris,
In my case it means a 1000 uf after superregulation for the motors if I understand you right.
Both superreg designers state that this is not a good idea...
Well the 7808 datasheet also specifies small 330nF and 100nF ceramic capacitors, but here we are using that chunky electrolytic awesomeness
As I said the thing causes a mean voltage swing. And I bet that the gyrator on teddy's output won't help much with impedances and transients.
Just give it a try man. It s five minutes tops and you can always remove it and call me a moron
Love the ebony Erik...
I cannot find it locally in a sane price, so I am using wenge instead. To be honest I like it more now that I have worked with it. Love its grain and long pores Although ebony seems to work better for vibration damping. But as I said, getting it in slabs or 50mm blanks is ridiculously priced...
Tubo do you by ay chance have a 0.01uF russian to compare too? I looked the duelund up... damn... 150$... on a sale....
I cannot find it locally in a sane price, so I am using wenge instead. To be honest I like it more now that I have worked with it. Love its grain and long pores Although ebony seems to work better for vibration damping. But as I said, getting it in slabs or 50mm blanks is ridiculously priced...
Tubo do you by ay chance have a 0.01uF russian to compare too? I looked the duelund up... damn... 150$... on a sale....
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Erik,
do you mind sharing the power supply setup for the transport of your friend.
thanks
Ofcoarse not.
Transformer-pre regulation-Teddy Pardo Super Regulation 8volt (motor)
Transformer-pre regulation-Burson Super Regulation 5volt (chip)
Transformer-regulation (leds)
Dexa Clock Supply
Schottky, Elna and Blackgates
Trannies are all EI.
The whole is sllver/cotton wired and has a small line filter and bybees.
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Thanks Erik,
that is very impressive. I wish I could do quality work as you could. im only using 8volt ps for my whole setup.
Dimkasta,
I only have russian k40y9 0.01 uf on hand. I can send you a couple if you want. It might took a while for me to be able to compare it with the duelund. I compared the k40y9 0.01 with a k75 pio 0.1 and I preferred the k75. The k40y9 sounded a bit thin and bright. Soundstage was deep and wide with both. Bass is tighter with the k75. I ultimately preferred the k75 though I was comparing different values. It would have been fair if I was comparing the same values. The duelund beats both russian caps in all fields. I only have less than 20 hours on them so far and they already sound incredible.
Guys, let me know who wants the k40y9 0.01 uf caps. I have 7 on hand and willing for you to audition it.
Thanks guys
that is very impressive. I wish I could do quality work as you could. im only using 8volt ps for my whole setup.
Dimkasta,
I only have russian k40y9 0.01 uf on hand. I can send you a couple if you want. It might took a while for me to be able to compare it with the duelund. I compared the k40y9 0.01 with a k75 pio 0.1 and I preferred the k75. The k40y9 sounded a bit thin and bright. Soundstage was deep and wide with both. Bass is tighter with the k75. I ultimately preferred the k75 though I was comparing different values. It would have been fair if I was comparing the same values. The duelund beats both russian caps in all fields. I only have less than 20 hours on them so far and they already sound incredible.
Guys, let me know who wants the k40y9 0.01 uf caps. I have 7 on hand and willing for you to audition it.
Thanks guys
i will have to look it up but I do get most of my trannies from Peter de Bruin in Delft (acoustic dimension shop) Handbuilt stuff for a decent price....
Today the Mini PiTbull PSU was hooded....2 mm copper
Guess what the cat dragged in today from Canada...my C906 experiment in waiting.....
Today the Mini PiTbull PSU was hooded....2 mm copper
Guess what the cat dragged in today from Canada...my C906 experiment in waiting.....
Hi guys,
since I've put in the 0.01 uf cap on the c906, it now has a hard time reading scratched cds. The 0.1uf cap did a better job in reading scratched cds. Anyway, im sticking with the 0.01 uf cap as it is just musical.
I have not compared 0.1 uf in different qualities...but then again a person cannot compare everything .
To me...it prooved over the last 5 years to be very stable with an 0.01 uF on c906.
Hi guys,
since I've put in the 0.01 uf cap on the c906, it now has a hard time reading scratched cds. The 0.1uf cap did a better job in reading scratched cds. Anyway, im sticking with the 0.01 uf cap as it is just musical.
True. This happens for me too.
I think of it kind of like when putting a better cartridge on a turntable.
You get better music, but it is also more sensitive to surface noise and imperfections.
Think of it this way if you treat your cd like a record (I always clean it with cd-enhancer and wipe it with sound cloth (anti static) and frequently demagnitize the particles in it before playing) skipping or not reading occurs seldom ( with 0.01uF on C906) and your listening quality is always top notch.
I learned that a cd is easily scratched so I have special bags (when they come in carton sleeves) and special cd boxes from Mobile Fidelity (lift mechanism).
I learned that a cd is easily scratched so I have special bags (when they come in carton sleeves) and special cd boxes from Mobile Fidelity (lift mechanism).
Somebody out there who is still testing experimenting.......???
Howabout a Dexa Regulator and a 220 uF blackgate in front and a good 1 uf cap after instead of the classical drawing of the psu flying here around...???
I am curious what the results would be...either on chip or on motors...
Howabout a Dexa Regulator and a 220 uF blackgate in front and a good 1 uf cap after instead of the classical drawing of the psu flying here around...???
I am curious what the results would be...either on chip or on motors...
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