Captain Ned wrote:Bensam123 wrote:Yup, I would match ohm'age.
Hrm. Any decent receiver will give specs for output power and THD at both 8 ohms and 4 ohms. While only you know the impedance of your speakers, you can safely stay away from anything that doesn't give specs for 4 ohm speaker connections as that's a dead giveaway that the amp's output circuits can't swing the amps needed to make up for the drop in impedance (cutting the impedance in half requires the output transistors to swing twice the amperage to maintain the same wattage).
Short take. If an amp has 8 ohm and 4 ohm specs, run it without fear on any 8 or 4 ohm speaker system. Anything else is hyper-priced audiophilia nervosa.
What he said. As long as the amp is stable at 4 Ohms you'll be fine with essentially any home speakers within reason. If you find one that's 2 Ohm stable (or lower)...that's a serious amplifier (generally) and will drive 4 Ohm+ loads all day long at maximum volume without even showing signs of stress.
ludi wrote:All Class AB amplifier designs produce a lot of waste heat, but some can produce more than others, and what you do with it once you've created it, matters. On the other hand, many users make matters much worse by cramming their gear into tight AV stacks, particularly alcove or cabinet configurations with poor ventilation.
This. Anyone who puts their components into an enclosed space without any active ventilation is just playing the amplifier death lottery.