There are some aspects of audio i'm still not all that clear about so i thought of posting it here where the experts hang out, sorry if this is a total noob question for some of ya.
From my basic physics education in high school i learnt that the higher the ohm value, the higher the resistance.
So a speaker of 8 ohm should offer more resistance to the amp then a 2 ohm speaker as far as i understand it.
When i look at decent amp specs, especially good ss models, this seems to makes sense as they usually deliver more power at 4 ohm or 2 ohm then they do at 8 ohm, the more expensive models seem to even double up, for example 100 watts at 8 ohm, 200 at 4 ohm and 400 at 2 ohm.
Then when i'm reading reviews of audio gear most reviewers warn when a speaker dips under 4 ohm to sometimes 2 or 1 ohm, and advise users to have a very powerfull amp.
This is where it gets unclear to me and i wonder if someone could elaborate, or give me some links to usefull websites.
note: i am familiar with speaker sensitivity and how this translates to power needed for obtaining a certain spl lever measured in decibels, my question are just about loads (and prolly a bit about current delivery from amp.
so my questions would be :
Q1 : Wich speaker loads require more power and why.
Q2: how come higher speaker loads like 8 ohm speakers over the entire frequency range apparently need so little power.
Q3 : i myself have some 4 ohm speakers with a 90 db 1w/1m sensitivity, how come they seem to be able to play louder and with more bass authority on a 100w at 8 ohm and 200w 4 ohm class A accuphase amp then on an 150 w at 8 ohm and 240w at 4 ohm emotiva xpa 200... Does it have something to do with the accuphase being able to deliver more current or what am i missing here.
Feel free to ad questions u think i should be asking myself.
Looking forward to your answers.