personal suggestion ko start muna sa 5-15 watt DC powered amplifiers. bago sa high power amplifier.
kapag nabuo na yung 2-15 watts, high power naman. then kapag working na. pwede na mag bi-amp active xover.
then kapag ok na yung bi-amp with activexover. pwede na mag assemble nang 2 - 3 channel stereo mixer.
kapag gumawa kasi nang amplifier "nakabuo" lang. walang natututunan. tska walang direction... no good in sa personal kong opinion.
Stage 1. low power.
Stage 2. high power.
Stage 3. active cross over.
Stage 4. mixer.
Stage 5. complex mixer (mic preamp, balanced line input, 3 channel eq, effects loop)
sa ganitong paraan mas maeenjoy mo yung PERA na nagastos mo rather than maninibak lang nang transistor or parts sa TRIAL and ERROR.