Line frequency harmonic supression filters are quite common in power electronics for industrial use where lots of AC motors, inverters and welding and other power euipmenets are used. These usually supress the harmonic freunccy from 3rd to 20th harmonic and allows pure sine wave to the load. The fundamental frequency here is 50Hz and harmonic supression will be for 150Hz and above.
Are such kind of filters also relevant for use with audio gear? Actually i tried building one with CFL chokes and capacitors and found the tube amplifier power transformer pretty cold even after 2+ hours of use. Also the sound was free of any harshness and sparkle and the mids very very open and less listening fatigue. Would be glad to hear from experts here. I am not sure if this is how music should be as the extra sparkle from the music has just vanished for the better.
Are such kind of filters also relevant for use with audio gear? Actually i tried building one with CFL chokes and capacitors and found the tube amplifier power transformer pretty cold even after 2+ hours of use. Also the sound was free of any harshness and sparkle and the mids very very open and less listening fatigue. Would be glad to hear from experts here. I am not sure if this is how music should be as the extra sparkle from the music has just vanished for the better.