I have a lm4702 2sc5200 1943 pair amp. I have measured in room using a RTA with berdynamic mic.. we were playing through sony laptop which sound ashtonishingly good but we have seen a rolloff from 14khz to 20khz
im using vifaxt25sc ring radiator using a first order crossover but used a first order crossover with 28 .47uf in parallel to achieve the capacitor.
is the rolloff because of the possibilities..
1. the amp has a 7uH inductor approx ( 10 turns of 5mm dia 1mm thick coil ) at the output
2. the capacitors in parallel are making effective inductance because of leads ( infact they have to get reduced coz they are in parallel)
3. the mp3 320kbps format might not have enough HF information
4. Do room acoustics play role ( since we have kept the mic on axis at 1m)
i would like to know that is the inductor at the otuput makes any difference?
what if its removed? any problems? could the rolloff be happening because of that?
im using vifaxt25sc ring radiator using a first order crossover but used a first order crossover with 28 .47uf in parallel to achieve the capacitor.
is the rolloff because of the possibilities..
1. the amp has a 7uH inductor approx ( 10 turns of 5mm dia 1mm thick coil ) at the output
2. the capacitors in parallel are making effective inductance because of leads ( infact they have to get reduced coz they are in parallel)
3. the mp3 320kbps format might not have enough HF information
4. Do room acoustics play role ( since we have kept the mic on axis at 1m)
i would like to know that is the inductor at the otuput makes any difference?
what if its removed? any problems? could the rolloff be happening because of that?