Finally, an affordable CD Transport: the Shigaclone story - Page 717 - diyAudio
Go Back   Home > Forums > Source & Line > Digital Source

Digital Source Digital Players and Recorders: CD , SACD , Tape, Memory Card, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 25th April 2013, 09:08 AM   #7161
tvicol is offline tvicol  Romania
vicol-audio.ro
diyAudio Member
 
tvicol's Avatar
 
Join Date: Jan 2005
Location: Bucharest
Send a message via Yahoo to tvicol Send a message via Skype™ to tvicol
Quote:
Originally Posted by uncle_leon View Post
...
Nude Vishays are a great example of a "good on paper, poor in real life" situation: making an attenuator with two or three of them terribly flattens the dynamics and "sucks the soul out of music" - you are left with tons of detail and nothing to actually enjoy. The only party I would want to have with Vishays in my system is probably a Boston tea party!

...
Actually I enjoy them very, very much, but this can be my taste. :-)

Regards,
Tibi
  Reply With Quote
Old 25th April 2013, 01:58 PM   #7162
diyAudio Member
 
Join Date: Mar 2006
Location: New Jersey
Quote:
Originally Posted by uncle_leon View Post
But first and foremost - it is the sound that matters. I understand Dim likes it - and if it sounds good then do you really care what the trace looks like?
uncle-Leon, my comment and answer to your question is "I agree" and "yes".

I'm neither of the purely subjective nor purely objective camp. I don't believe, for example, that some of that high dollar gear that gets reviewed in Stereophile - but measures like absolute cr@p - is good just because people like the sound of it. To me that's unacceptable. By the same token I'm right there with people who will point out that just because it measures perfectly doesn't mean it actually sounds good. I've heard plenty of stuff on both sides of that line.

I think we need to strive for a design that attempts to adhere to reasonable technical performance characteristics. If we can maintain that and still get great sound I think it's the right approach.
  Reply With Quote
Old 25th April 2013, 02:47 PM   #7163
diyAudio Member
 
dimkasta's Avatar
 
Join Date: May 2010
Location: Athens
From my point of view, measurements are just an indication towards the right direction. Such measurements are just a tiny bit of the truth. They are just an indication whether you are on the right track or not... Electronic devices even in their simplest forms are extremely multidimensional, so claiming that they are perfect because a bunch of measurements are perfect is pretty much B.S. unless verified by "audio nirvana" which is the ultimate goal in the first place...
Until we manage to create a proper, subjective and full model of what "audio nirvana" means, measurements mean something only for troubleshooting and just a bit more than nothing to prove audio excellence.

About my above measurements, these are telling me to TRY something around 14.2dB attenuation and check the inductance of my resistors and perhaps the loading of the chip. There is nothing telling us that it is going to play better or worse like that... I am just checking my device based on our initial hypothesis that a 0.5V perfect square signal should sound better... There is no rule that this is right either though...
__________________
Second harmonic and semi-sweet wine for everyone...
The DIY Tone! | Shigaclone
  Reply With Quote
Old 25th April 2013, 04:17 PM   #7164
diyAudio Member
 
Join Date: Mar 2006
Location: New Jersey
Dim, I think (hope!) we're saying the same thing.
  Reply With Quote
Old 26th April 2013, 07:38 AM   #7165
diyAudio Member
 
Erik van Voorst's Avatar
 
Join Date: Mar 2006
Location: Rotterdam
Quote:
Originally Posted by tvicol View Post
Actually I enjoy them very, very much, but this can be my taste. :-)

Regards,
Tibi
For me they are the best on the planet...

But its all about using them in a clever way...like an ingredient.

At the moment I use eg two 125 ohm in my DAC...soon I will compare them against the stuff Uncle Leon is making....that will be (again) promising.

I make heavy use of naked Vishay but only in combinations with other warm saucy ingredients...
__________________
To baldly go where no man has gone before................(James Kirk)
  Reply With Quote
Old 28th April 2013, 10:55 PM   #7166
diyAudio Member
 
Join Date: Mar 2006
Location: New Jersey
Quote:
Originally Posted by secanbj View Post
The issue i had when i added the 5v supply (Bobken shunt reg) was that it did not deliver enough current. But that was a mistake made by myself, needed to change a resistor to enable more current. If i do not remember wrong it consumes around 150 mA

/Anders
Anders, which resistor did you replace, and with what value?
  Reply With Quote
Old 29th April 2013, 12:10 AM   #7167
diyAudio Member
 
Join Date: Mar 2006
Location: New Jersey
If I'm going to build a Bobken, does anyone know if this is the genuine article?

IC AD811AN High Performance Video Op Amp Qty 4 | eBay

The printing looks a little messy for an AD chip.
  Reply With Quote
Old 29th April 2013, 05:52 AM   #7168
Phisci is offline Phisci  South Africa
diyAudio Member
 
Join Date: Aug 2012
Default MY IR reciever has stopped working!

Hi guys, my remote no longer controls the Shigaclone. I've checked the connection between the receiver on the shigalcone and the pcb and that's fine.
Any ideas?
  Reply With Quote
Old 29th April 2013, 06:35 AM   #7169
secanbj is offline secanbj  Sweden
diyAudio Member
 
Join Date: Sep 2003
Location: Gothenburg
tonyptony: my error/mistake was to follow this schema in post #4211

Finally, an affordable CD Transport: the Shigaclone story

were the resistor after the BSP 129 is 15 ohm, this will limit the current to about 35mA. From my measurements the player needs about 100mA to function, so puzzled I searched for all posts regarding Bobken in this thread and found this updated schema 100 posts later (#4373)

Finally, an affordable CD Transport: the Shigaclone story

there the resistor is 3 ohm and that did the trick, I settled on 2.7 ohm and my Bobken/Shiga works fine now.

/Anders
  Reply With Quote
Old 29th April 2013, 06:36 AM   #7170
tvicol is offline tvicol  Romania
vicol-audio.ro
diyAudio Member
 
tvicol's Avatar
 
Join Date: Jan 2005
Location: Bucharest
Send a message via Yahoo to tvicol Send a message via Skype™ to tvicol
Quote:
Originally Posted by Phisci View Post
Hi guys, my remote no longer controls the Shigaclone. I've checked the connection between the receiver on the shigalcone and the pcb and that's fine.
Any ideas?
1. Check remote batteries.
2. Check if your remote IR led is working with a camera.
3. Check if your IR receiver is powered - 5V
4. Check IR receiver output with a scope.

Regards,
Tibi
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



New To Site? Need Help?

All times are GMT. The time now is 06:07 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2