Hi everyone, I would like to build a DIN 5-pin to XLR phono cable, to get balanced in the pre-phono (an Aqvox Phono ci2 mkII).
I find myself faced with three solutions:
1) as recommended by the Aqvox site, cable screen connected only to the XLR side (pin 1) and a separate ground wire from the center pin of the DIN (starting from the arm ) to the pre phono
http://www.aqvox.de/download/AQVOX-phonocable-connection.pdf
2) as recommended by the Ayre site instead, cable screen connected only at the DIN side with arm ground, and then at the pre-phono with a separate ground wire, but cable screen not connected to XLR side
Ayre Acoustics Phono Cables
3) cables like the Jelco where there's any separate ground wire
JELCO JAC-506XLR straight DIN to XLR tonearm cable
and where I think the screen is connected both to the ground wire (through DIN center pin) and to XLR pin 1..
what do you think about?
thanks so much!
I find myself faced with three solutions:
1) as recommended by the Aqvox site, cable screen connected only to the XLR side (pin 1) and a separate ground wire from the center pin of the DIN (starting from the arm ) to the pre phono
http://www.aqvox.de/download/AQVOX-phonocable-connection.pdf
2) as recommended by the Ayre site instead, cable screen connected only at the DIN side with arm ground, and then at the pre-phono with a separate ground wire, but cable screen not connected to XLR side
Ayre Acoustics Phono Cables
3) cables like the Jelco where there's any separate ground wire
JELCO JAC-506XLR straight DIN to XLR tonearm cable
and where I think the screen is connected both to the ground wire (through DIN center pin) and to XLR pin 1..
what do you think about?
thanks so much!
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Both Ayre and AQVOX do not seem to fav a continuous shield from Tonearm to Phonopre (something I would definetly try with a balanced connection from cart to PP input).
However, their proposal gives flexibility to leave earth connection open, in case that this gives better noise rejection). It really depends on how the PP is wired, and how the chassis is connected to the circuit (ground).
I'd go with the Ayre proposal, as there is the possibility to attach the shield to the case with the ground spade.
However, their proposal gives flexibility to leave earth connection open, in case that this gives better noise rejection). It really depends on how the PP is wired, and how the chassis is connected to the circuit (ground).
I'd go with the Ayre proposal, as there is the possibility to attach the shield to the case with the ground spade.
hi!
even with the Aqvox solution there's a grouns wire with a spade to the PP case: the ground cable goes from the armtube/armbase directly to the spade connector on the phono amp.
Take a look at Aqvox cables
AQVOX Silver Balanced Tonearm Cable 90 degree DIN to XLR
my main concern is about the cable shield: accordingly to Ayre scheme, what's the utility of a such connected screen (on the end side)?
I found more reasonable the Aqvox way...
Am I wrong?
So do I, but I suspect there's something about putting some ground noise on the PP... a sort of "safe way" adopted by most cable brands (even Cardas use the separate ground cable on DIN-XLR connections).
Moreover, we had to consider that the cartridge signal is native balanced, and virtually there's no need of a shield...
I'd stop theorizing and try the different possibilities. If you have an AQVOX, why not try their scheme first? They sure have reasons to do it their way. Listen with volume up or measure the output of the phono pre with a good soundcard, while experimenting.
I really can't suggest much more than this.
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