Normally I don't replace resistors but have had many DIY'ers tell me it makes a difference. I would only worry for those in series though. I will try that on my next rebuild. Thanks
This is interesting: ---------------------------------------------- "Completely agree. Resistors don't have a "sound". All they do is resist the flow of electricity. They are completely linear devices. Where there can be changes, though, is as Chris says. If the crossover was designed for an exact value of resistance, whether inductive or non-inductive, then substituting another resistor of same nominal value but different actual value, then the attenuation will change, cahnging the sound of the loudspeaker. Having said this, however, I don't know of any crossover design that is dependent on the actual (as opposed to nominal) values of the resistor, as passive crossovers are fairly crude affairs. So, changing a, say, 2 ohm resistor with another of 2 ohms is most unlikely to make a difference to the sound. Crossover resistances are usually non-inductive, but there's not a lot of inductance in a low value resistor as it typically used in crossovers, (of the order of microhenries) so whilst I agree that theoretically it should matter whether the resistors are inductive or non-inductive, in practice that's also likely to make next to no difference. Non-inductive wirewounds are necessary in radio-frequency circuits, transmitters etc, where even the few microhenries matter, but at audio frequencies it's pretty insignificant compared with the size of crossover coils which are 100 x greater."
Passive components can all have parasitic impedance, capacitance and/or inductance - a capacitor, for example, never contributes 100% capacitance and nothing else. So yes, on that score, people will often say that crossovers are designed by careful trials with different components and based on their overall contributions. But I seriously doubt that's true with the kind of crossovers that use cheap 20% tolerance electrolytic capacitors - the variation between samples would surely be way too high. And, I reckon the potential benefits of using, say, better caps (on resolution, imaging...) far outweigh any possible change to the originally intended tonality - at least, that's been true with crossovers that I've upgraded. For me, replace electrolytic caps with film caps first, iron core inductors with air core inductors next... and I haven't heard any difference swapping resistors.
Halo , sir can i ask do u replace also the cement resistor to better resistor such as wire wound type it also have changes ? tq
Normally I don't replace resistors but have had many DIY'ers tell me it makes a difference. I would only worry for those in series though. I will try that on my next rebuild. Thanks
This is interesting:
----------------------------------------------
"Completely agree. Resistors don't have a "sound". All they do is resist the flow of electricity. They are completely linear devices.
Where there can be changes, though, is as Chris says. If the crossover was designed for an exact value of resistance, whether inductive or non-inductive, then substituting another resistor of same nominal value but different actual value, then the attenuation will change, cahnging the sound of the loudspeaker.
Having said this, however, I don't know of any crossover design that is dependent on the actual (as opposed to nominal) values of the resistor, as passive crossovers are fairly crude affairs. So, changing a, say, 2 ohm resistor with another of 2 ohms is most unlikely to make a difference to the sound. Crossover resistances are usually non-inductive, but there's not a lot of inductance in a low value resistor as it typically used in crossovers, (of the order of microhenries) so whilst I agree that theoretically it should matter whether the resistors are inductive or non-inductive, in practice that's also likely to make next to no difference. Non-inductive wirewounds are necessary in radio-frequency circuits, transmitters etc, where even the few microhenries matter, but at audio frequencies it's pretty insignificant compared with the size of crossover coils which are 100 x greater."
Passive components can all have parasitic impedance, capacitance and/or inductance - a capacitor, for example, never contributes 100% capacitance and nothing else. So yes, on that score, people will often say that crossovers are designed by careful trials with different components and based on their overall contributions. But I seriously doubt that's true with the kind of crossovers that use cheap 20% tolerance electrolytic capacitors - the variation between samples would surely be way too high. And, I reckon the potential benefits of using, say, better caps (on resolution, imaging...) far outweigh any possible change to the originally intended tonality - at least, that's been true with crossovers that I've upgraded. For me, replace electrolytic caps with film caps first, iron core inductors with air core inductors next... and I haven't heard any difference swapping resistors.
Thanks for the excellent information and comment