This is a post from a facebook group created by yours truly and of which FMs Denom and Santhosh (santhol2?) are admins (besides me, of course). Other than that, many FMs are also members there.
Any other FM(s) here (keen on DIY and custom-bult equipment) desirous of joining this group, please send me a friend request to my facebook profile - "Trittya Tunn" alongwith a message giving me your username on HFV, this being so as its a closed group and NOT OPEN FOR ALL and SUNDRY.
An interesting and useful post by Jacques Barrire of The HI-FI DIY and CUSTOM builders' GUILD here
Log In | Facebook
on the group wall of HI-FI DIY here
http://www.facebook.com/groups?/159629294104826/?ref=notif&no?tif_t=group_activity
QUOTE
Jacques Barrire -
A few reasons why we use DIN connections:
The obvious reason: DIN connections sound better than RCAs...
The phono plug, or RCA connector, as best as anyone can remember, was designed decades ago as a direct current (DC) power connector. Its design properties do not lend themselves to transferring music signals that have very low voltages (less Than 5 volts) of alternating current (AC). This is true - no matter how good the RCA plug is or whether it is made with gold, etc.
The first difficulty with the RCA connector is that it has a high-frequency capacitive impedance of around 200 ohms; unfortunately, the typical cable that connects the two RCA plugs together has an impedance of about 50 ohms. In this situation, the two RCA connectors on either end of the cable act as reflective walls at higher frequencies and bounce information back and forth, trapping the signal and extending the decay time of the signal that is trying to pass from one component to the other. These reflections have an effect on musical information and are especially harmful to low-level signals, particularly quiet harmonics and underlying instruments, where the ringing that is generated by the loudest instruments will smear the smallest signals. The result is that the quiet instruments will blur or fade away when the loud ones come along. The complexities of the music and the tones of individual instruments get lost.
The DIN plug has an impedance that is similar to the cable. It does not reflect like an RCA plug.
Furthermore, the system ground (which should be a stable connection point to which all signals and power supplies are referenced) is absolutely critical to the sonic performance of your hi-fi. A single reference ground point is important so that signal details are not lost in the small, yet significant voltage differences inevitable with separated ground paths.
Many manufacturers point to the great trouble they take to "star ground" everything. Sadly, this is all wasted when you connect your system together with RCA-plugged cables. Why?
When you connect, for instance, a CD player to a preamp with RCA-plugged cable, you automatically have two separate ground wires - the left and right shields going between them. This creates a ground loop, which degrades the musical performance dramatically, and negates any efforts that were taken to ground the internal circuits properly.
If you were to connect these same two components together with DIN-plugged Naim interconnects, you would have only ONE cable with only ONE ground shield surrounding both the left and right signal wires. Hence, only one ground path for each connection and no ground loop.
UNQUOTE
Here is the description of the group. It was created about 10 days back and has 230+ members as on date.
**************************
The HI-FI DIY and CUSTOM builders' GUILD
Welcome to the group. I am still in the process of creating it, though.
The aim is to have a common platform where DIY enthusiasts can discuss their projects and/or ideas. Consequently, they can also get their gear custom-made from other members if they so desire.
Its just that there MUST NOT be an overly commercial flavour where people start advertising their gear because that would defeat the entire purpose of going the DIY and/or CUSTOM way.
Having said that, may I request you to suggest appropriate names, even if they are not in my friends' list as of now. There are already some to whom I have already sent a friend request.
It is important that the non-commercial nature and flavour be retained to the maximum possible degree for the benefit of all. So lets all keep it at what we cant do without.
Its pertinent to mention here that (sometimes) a member's name does not get added unless he or she is in my friends' list. Please bear with us till we get these BUGS sorted out.
*******************
HOPE THIS HELPS
