But comparing twisted pair to coax is going back to apples vs oranges once again. Coax to some degree also gets cancellation of fields, assuming that the construction is indeed perfectly axisymmetric (which is never is in practice of course).
Irony meter off scale - you invented the above scenario with coax, Steve was confining his statements to only twisted and paralleled pairs 😀
In any case, balanced operation is next to useless, unless you are in a high interference environment when it comes to phono operation. So let us continue on single ended operation.
And this is just the sort of thing one would come up with who had little more than a sixth grade science class understanding of conduction in metals.
Amazing how things sound better even though reason given for it is so off base.
se
The real problem is, because they are traveling so fast, the electrons fly off the ends of the traces because they are unable to make that sharp turn.
John
So, dou you think it is a good idea to make the feedback resistors the same impedance as the impedance of the cart. ? Whould not be the lowest noise though, and the cart, being low impedance whould not provoke common distortion much anyway.
Joachim, we DON'T need to start with ANY kind of balanced input. Phono cartridge loading is ALSO a separate issue. Short it, and it sounds 'under-water'. Unload it, and it sounds 'tizzy'. You should know that!
What do you mean ? Of cause i am crazy, why else should i try to feed my family with audio work. What i ment is to make the feedback resistor to ground parallel with the fedback resistor from output to the minus input the same as the cart. impedance.
Say, the cart, has 40 Ohms like he DL103 then the feedback resistor to groud whould be a bit over 40 Ohm parallel to the other resistor so in total they have 40 Ohm. Say we need a gain of 40dB ( when we use passive 75usec the way i have drawn the block diagram ) the resistors whould be a bit over 40 Ohm and 4 kOhm aproximately. We loose 20dB at 20kHz because of the passive RIAA so we end up with 20 dB at 1kHz.
Say, the cart, has 40 Ohms like he DL103 then the feedback resistor to groud whould be a bit over 40 Ohm parallel to the other resistor so in total they have 40 Ohm. Say we need a gain of 40dB ( when we use passive 75usec the way i have drawn the block diagram ) the resistors whould be a bit over 40 Ohm and 4 kOhm aproximately. We loose 20dB at 20kHz because of the passive RIAA so we end up with 20 dB at 1kHz.
> Amazing how things sound better even
> though reason given for it is so off base.
So what's the reason for the signal
denegration brought on by jagged traces ?
> though reason given for it is so off base.
So what's the reason for the signal
denegration brought on by jagged traces ?
Maybe you are wrong and electrons love sharp edges. If you find that out you are a candidate for the Nobel Price.
- Status
- Not open for further replies.