Turntable Interconnects?


I want to upgrade my interconnects and ground wire from my Project RPM3 (Hanna SL MC cartridge) to the Project Tube DS preamp (goldenlion tubes) and to my receiver/preamp. Currently using Blue Jean interconnects. Not sure if turntable interconnects are a different category than digital sources, so need help on what to choose. no more than $500 each would be a nice limit. Thanks.
deanshias
You can use regular interconnects with your TT but if possible phono specific cables can have an edge.  I used Audioquest Niagara on my VPI Classic and then swapped for Audioquest Leopard.  Both are very nice but the Leopards are better in this application.  I'm not sure the reason, some say it has to do with capacitance and its interaction with the cartridge. 
Digital interconnects are supposed to be interconnects with a 75 Ohm characteristic impedance.   The catch is you can't get that with an RCA jack, it isn't physically possible.   Bryston uses a 75 Ohm BNC connector just for this reason.  There is a decent chance the digital cable will have too much capacitance. 

Cartridges don't care about the characteristic impedance of the cable but they are sensitive to capacitance, which loads the cartridge.  The cartridge manufacturer / datasheet will tell you the needed capacitance to load it, of which the cable is part of that and the rest of it is in the preamp / step up input.  

Moving coil cartridges typically use low impedance inputs on the preamp or step up device.   Inductance in the interconnect has more affect on the sound when faced with a low impedance than a high impedance.   So, the preferred cable for a MC setup should have low inductance. 

So, you could call Blue Jeans back and find out if they have a unique very low capacitance / low inductance cable for MC phono cartridges.  The concept here it is easy to add capacitance to properly load a cartridge but one cannot remove capacitance if the cable has too much.  If you opt not to go the Blue Jeans approach, I suggest you find the lowest capacitance cable out there with a good dielectric - air, Teflon, polystyrene, etc. and a great shield. 

On my system here I am using the manufacturers cables on both of my tonearms, as they also match the cartridges I am using.  However, I will say that ideally you would find a suitable interconnect that matches the cartridge you are using.   If you ever switch to another cartridge, reevaluate the interconnect parameters before you hook everything up.  You might just need a different interconnect.
What don't you like about the BJCs?  Are you using the LC-1?  They have low capacitance which makes them an excellent choice for use on a turntable. With the level of the rest of your gear you might be better off spending the money somewhere else.  Or saving yourself 500 bucks.
Standard interconnects for line level signals are not made of low capacitance cable. When you have a low amplitude signal such as a phono cartridge, you need low capacitance so the cable doesn’t roll off the high end. All the more important with a high impedance moving magnet cartridge. 
Thanks for the great responses... The initial cartridge was a Sumiko Blue Point No.2 MM cartridge. So im not sure if that cable that came with the Project RPM3 was only designed for MM specs. The Blue Jeans do sound good but want to upgrade and put these to use somewhere else. With the goal of upgrading the whole turntable/cartridge in the future. Not sure how to calculate impedance/capacitance/Inductance with cables yet. Any recommendations would help.

Blue Jeans LC-1 Audio Cable 3 ft. Specs:
Center Conductor - Solid Bare Copper, 25 AWG
Dielectric - Nitrogen-Injected Low-Density Polyethylene
Shield - Braid/Braid, 98% coverage, bare copper
Outer diameter - .305 inch
UL Listing: Yes
NEC Rating: CM (Communications rated; suitable for residential and commercial in-wall installation)
Electrical Characteristics:Capacitance, conductor to shield: 12.2 pF/ft
Resistance, center conductor: 34 ohms/1000 feet
Resistance, shield: 1.7 ohms/1000 feet

Hana SL Specifications:
Stylus Profile: Natural Diamond Shibata
Cantilever: Aluminum
Output Level @ 1kHz: 0.5mV
Output Balance @ 1kHz: Less Than 1.5dB
Vertical Tracking Force: 2 grams
Trackability: 70 um/2 grams
Separation @ 1kHz: 28 dB
Frequency Response: 15-32,000 Hz
Impedance @ 1 kHz: 30 Ohms
Compliance: 10 µm/mN
Suggested Load: 400 Omms
Cartridge Weight: 5 Grams
Body Color: Black

Does turntable cable matter in this case from the preamp to the reciever/preamp the same way it does from the turntable to the preamp?
Phono stage to preamp / integrated amp / receiver is much less critical since the signal level is much, much higher. Conventional interconnects will do just fine for that. 
First cable is the most important, it is very important.
How are the Morrow turntable interconnects? They are having a good sale? 

http://morrowaudio.com/audiophile-and-home-theater/phono-cables

This is what the specs say.. is the top elite model at $995 worth it? Which one would is suggested?

Morrow Phono Cable Capacitance/ Meter:
Magnetic cartridges are the only cartridges that might be affected by cable capacitance. With
moving coil cartridges, cable capacitance is not a concern. Please use the information below
when determining the phono preamp settings for magnetic cartridges.
PH1: 98pf per meter
PH2: 196pf per meter
PH3: 294pf per meter
PH4: 392pf per meter
PH5: 490pf per meter
PH6: 588pf per meter
PH7: 784pf per meter
Elite: 980pf per meter
OK... couldnt wait and ordered the Marrow:  PH6 Reference Phono Cable & MA4 Reference Interconnects. Talked to the owner of the company and this is what was recommended with my budget.  They have to be broken in for at least 400 hrs so Ill keep you posted. He said to hook them up to a CD player and let it play until theyre ready.
@deanshiasim

I am in the same boat you are but tell me this topic of looking into a new cable.  Why did you move from ~40pF cable to ~600pF cable? My current cable is ~60pF and made of OFC, I was able to swing Kimber Kable just before Christmas (benifits of work trip to SLC) looking at the manufacturing of their cables. Questioned the copper vs silver.

please share your knowledge and results of the change.