...LPspinner, would I get better sound from my turntable if I made some dedicated leads from 50 ohm coax?
Hi timbloke …
In reality probably not … it’s just that the microphone cable will have a slightly higher capacitance due to it being a twisted pair wrapped up inside the outer shield. The Co-axial cable on the other hand, is a simpler, single core and shield with a greater distance between the shield and the core. The more distance between the core and shield means lower capacitance.
In theory, the higher output impedance of the cartridge will be more sensitive to cable capacitance than the lower and more predictable output impedance of a pre-amp or stand alone phono-stage. In reality the HF “roll-off” caused by the extra capacitance will probably be well beyond the audio frequency range and of no real consequence, unless you are planning to run many meters of cable. Then again: it won’t cost that much to try and you can practice you soldering skills along the way.
I mentioned the coax simply because I feel a little more comfortable using it in this application where capacitance may become an issue. The coax also makes good digital interconnects if you are running an outboard DAC on your CD spinner.
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