What does the manual exactly say? I can't find it on the manufacturers website. Does it state the exact output impedance? What about the KT-2A, does its manual state an input impedance?
I think the use case is that if the next thing in the chain has a rather high input impedance, then this box puts a 600Ω load on its outputs by itself.
For line level devices it is common to have an output impedance of 600Ω which connects to a ca 10kΩ input impedance. With an input impedance being in the ballpark of a factor 10 higher than the output impedance, it is like you plug something into the AC Mains power: there is always enough juice and the power delivery doesn't have to really work.
An alternative design is the input impedance being a close match to the output impedance. That's what you want with speakers: all delivered power is consumed. That design is not used much in audio over line level, but there are probably scenarios where it's needed.
It makes me think of ethernet over coax: there needs to be a 75Ω termination resistor at the end for absorption, otherwise the signal will reflect back and makes the whole network unstable. This phenomena happens only in the megahertzes region. But impedance mismatches (output impedance too high for the input impedance) are known for causing loss of high frequencies and inducing noise. I should say I've hardly encountered them in practice.
That's what I basically know about impedance matching, so you'll have to do with these 2cts.
I think the use case is that if the next thing in the chain has a rather high input impedance, then this box puts a 600Ω load on its outputs by itself.
For line level devices it is common to have an output impedance of 600Ω which connects to a ca 10kΩ input impedance. With an input impedance being in the ballpark of a factor 10 higher than the output impedance, it is like you plug something into the AC Mains power: there is always enough juice and the power delivery doesn't have to really work.
An alternative design is the input impedance being a close match to the output impedance. That's what you want with speakers: all delivered power is consumed. That design is not used much in audio over line level, but there are probably scenarios where it's needed.
It makes me think of ethernet over coax: there needs to be a 75Ω termination resistor at the end for absorption, otherwise the signal will reflect back and makes the whole network unstable. This phenomena happens only in the megahertzes region. But impedance mismatches (output impedance too high for the input impedance) are known for causing loss of high frequencies and inducing noise. I should say I've hardly encountered them in practice.
That's what I basically know about impedance matching, so you'll have to do with these 2cts.
Statistics: Posted by BertKoor — Fri Jul 19, 2024 7:58 am