Help choosing some interconnect parts?

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Folsom

Help choosing some interconnect parts?
« on: 31 Jan 2006, 12:56 am »
I am not sure what I want to use.... I plan to be running 89259 combo with the solid strand stuff RCA cabling, shielded. Inside the amplifier will be Cardas hookup wire 19.5 gauge and vampire cast hook up 26.4 gauge I think for signal. The speaker posts will be Cardas one twists (Percy has these for $36 a pair your choice of size and coating!). I will be using a 350va transformer with my 3875 chip amp (on a isolation pad and I need to find out where to get some copper sheet to shield it...).

I am debating what RCA Jack/Plug to use...

http://www.partsconnexion.com/catalog/connectors.html

I was considering the WBT style Connex discontinued RCA plugs... solder (I have WBT silver solder to use) version with the WBT RCA jack's from Connex to match.

Are there any objections to these? They seem sound. I would like copper stuff but it cost a LOT of money, in fact it adds up to more then the amplifier itself and FAST.

skrivis

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Re: Help choosing some interconnect parts?
« Reply #1 on: 31 Jan 2006, 01:20 am »
Quote from: Destroyer of Smiles.
I am not sure what I want to use.... I plan to be running 89259 combo with the solid strand stuff RCA cabling, shielded. Inside the amplifier will be Cardas hookup wire 19.5 gauge and vampire cast hook up 26.4 gauge I think for signal. The speaker posts will be Cardas one twists (Percy has these for $36 a pair your choice of size and coating!). I will be using a 350va transformer with my 3875 chip amp (on a isolation pad and I need to find out where to get some copper sheet to shield it...).

I am debatin ...


Lots of stuff at that partsconnection that doesn't look as good as Canare and costs a lot more...

I guess Canare has no pizzzazz. :)

Occam

Re: Help choosing some interconnect parts?
« Reply #2 on: 31 Jan 2006, 02:05 am »
Dos,

I've found the most difficult part in any DIY project to be the elimination of hummmmmm. A copper 'belly band' isn't going to do much to minimize EM fields from transformers. For that you need shielding that deflects the magnetic field. Mu metal is quite expensive. An inexpensive alternative to reduce hum from transformers is CRS (cold rolled steel), which you can find in the form of a 'tin can'. Institutional tuna fish cans (please empty first and make sandwiches) are often a handy dandy size to go around torioidal transformers.

For low level signal wiring, nothing beats a shielded coax to minimize the pickup of extraneous signals, but if we wish to choose our specific wire,  twisted pairs, are a good alternative. I do hope your buying a gainclone kit with (or at least) a pc board with good groundplanes. Inevitably you'll find that hum and noise isn't a function of your specific project, but rather the result of interaction between your project and those components to which it connects. Such is life... :?

Personally, I'm simply too cheap to use the more bespoke speaker connections and use Superior BP30s. Regardless of whatever output protection your amp may have, metallic nut bindingposts scare me. (I do realize those spendy Cardas connections don't have that potential problem).

My personal suggestion would be to buy a kit with whatever cheapass (optional) connectors are provided. This would provide you an opportunity to build as is, and once its working to your satisfaction, incrementally upgrade wires, connectors, components, etc.... so that you can make your own empirical observations as to what works for you, and what doesn't.

Regards,
Paul

Folsom

Help choosing some interconnect parts?
« Reply #3 on: 31 Jan 2006, 03:18 am »
Who carries Canare? I have had a few recommendations of some products they make.

Well I am going to have a solid block of copper that will be hopefully two inches thick and two to three tall in-between the transformer and the rest of the amplifier. I think that might do the trick. It seems to of worked for Peter, and 6moons did not seem to mention any problem with it.

I am not going to use a tuna fish can :roll: . My amplifier will be made of acrylic tappable plastic most likely. Better look than wood, not as bad of sound as metal.

I am scared of some binding posts too... Spades are a must or banana ends.... However as you do know the Cardas one does not suffer from a problem and can actually use straight coaxial like I was going to run, with probably nothing on the ends. 89259! I am a believer.

I did buy a kit for the amplifier, premium one from Peter. It does not have any thing with it but the PCB and basic components.

I have already been playing around with stuff on my Frankenstein project. The few things I know are wire is of major important, copper binding posts are god like in comparison to any thing else, and cables are unbelievably important. The difference between every change I have made is noticeable instantly. I can understand where Cat5 gets a little acclaim of higher capacitance but truth be told it is not that high compared to most stuff that cost a lot. I think short runs of Cat5 are best, and am not interested in ever using it for interconnects or speaker wire.

I think I might go with these RCA jacks

http://www.diycable.com/main/product_info.php?cPath=26_136&products_id=548

, they have copper and an ok price. I would LOVE some WBT copper ones but at $45 a piece or what ever.... Unless some one knows another place to get copper RCA jacks and plugs, or any with even content of.... I just need to find some RCA plugs that have copper content I guess, to match.

The RCA cables themselves are going to be 89259 for signal, and 89248 for ground. According to Jon Risch this is the best way and I believe him. 89259 is amazing stuff, and for signal it should be used, but in order to supply a component with better conductivity the non-signal using a better conducting solid core completely makes sense to me. You twist the two cores together, put some thing over them, and then shielding (perhaps some from DIY cable), then what ever you want over the top of that. I realize this makes some fatty cables but the coaxial is easy to get, will be shielded for my dorm setup, and will compete with several hundred dollar interconnects.

Just so you know my other plans include new speaker cables of 89259, with spacers through out the entire length (Jon Risch was smoking crack when he said to twist them, worst idea ever that I tried). I am going to use Bryant round ends for power cables and some Hubble square for into the wall, with basic 14 gauge AC wire, that will be braided in a set of four minus the ground. Then at the ends I am going to clamp a ferrite piece over the positive and negative stands, run the ground over the top of the ferrite clamp. I am also going to make a plug in box with some Bryant plugs. I will have amazing conductivity short of absolutely nothing but gold plating like in some Kimber sockets and ends.

This "little project" should with some hope compete with a lot of members some what nicer stuff. I am going to be using two XM1 crossovers from Marchand, with some upgraded OPAMPs I think. Black Velvet pot (yeah I know attenuators are nice but I will run shunt mode with perhaps some resistors for log response). The only short coming maybe be my speakers, but for near field desk listening I am only going to be able to work with so much. My next speakers I think might be some CSS full ranges, they are impressive. I am also going to add a subwoofer to fill in for my little bookshelvers.

My speaker stands for a desk are almost done, I used TNT audio's stubby idea, took it a little further. I am going to use some brass screws at the bottom instead of bullets, and made a more concrete design for holding the PVC in place. They are about $10 stands :mrgreen: (a pair, if that).

SET Man

Help choosing some interconnect parts?
« Reply #4 on: 31 Jan 2006, 03:50 am »
Hi,

I used the Bullet plug (copper version) with 26ga Vampire cast copper for my IC. The Bullet plug is very simple. A bit fragile. So, be careful when soldering them. One thing I don't like about them is that the body is plastic. :?

Now I have 1meter pair from CDP to pre, 3meters pair from pre to amp and 1.2meter from my Rega Plannar2 to pre. All works well and overall I like the sound of my system. No more buying $$$ for me.  :mrgreen:

Good luck,
Buddy :thumb:

Folsom

Help choosing some interconnect parts?
« Reply #5 on: 31 Jan 2006, 04:21 am »
Any recommendations for well priced bullets? They seem to be a little spendy when you need 6-8.

Folsom

Help choosing some interconnect parts?
« Reply #6 on: 2 Feb 2006, 12:56 am »
I take it back the Bullets are in packs of four.

However where do you find Canare stuff? I have only seen a few items around.

ctviggen

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Help choosing some interconnect parts?
« Reply #7 on: 2 Feb 2006, 01:04 am »
Check out (you have to download the catalog; I recommend using the search tool to search):

http://www.percyaudio.com/