I saw a quite expensive (US$1000+) phono amp is only using Philips carbon film resistor as loading resistor. I am curious to know if changing it to, e.g. Caddock, will improve the sound quality?
Shunt and series have the same effect on signal, which may be negligibly small or significant depending on the situation.andyr said:even though it's hard to see why - in a shunt position - they should have an affect on the sound
Some people have a concept called 'signal path', which seems to relate mainly to series components. It is based on a misconception so best ignored.
I'd expect a $1000 phono preamp to be aimed at MC carts. Otherwise agree with what you said.MM carts
You would have to define what you mean by "very good engineers". Most of what is said about 'signal path' is wrong e.g. that series components affect it more than shunt components.merlin el mago said:I think very good enginiers don't share your opinion about "signal path". About shunt and series differences depend a lot of quality resistors because shunt it's only one noise resistor & series you are summing each step another noise resistor.
You would have to define what you mean by "very good engineers". Most of what is said about 'signal path' is wrong e.g. that series components affect it more than shunt components.
As Sunsun22 has discovered, the correct component value is far far more important than anything else.
Yet, a correct loading is something that I can hear. I purchased a new MC cartridge that come in a wooden box and crafted the optimum loading resistor as 100R to 200R (Loading range is 100R to 47K). However, after a month of run-in, I still don't like the tone, its too high. I gradually increase the resistor and found 520R is the best in my system. When I was wondering why the margin is so great between my system and the factory's recommendation, I discovered the correct loading resistor from the factory's website shows 500R! Obviously, the wooden box is an old version.