I'm planning on getting a new speaker.
Problem is, it has 4ohms impedance.
I will hook this up to my HK 235 which has an 8 ohms impedance and a Bada power amp which has an 8ohms impedance as well.
Will be using this for about 2 - 4 hours per session.
Any long term effects on the speaker, amp and AVR?
depends on how loud are you normally listening.
in this case, your load(speakers) will draw more current from your amp than 8ohm speakers.
if your level gets too loud, the current rush might put your amp into danger of clipping.
youll notice this when sound from your speakers starts to get crazy(garalgal na).
so you can get it but just dont listen too loud.