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Need some Amp help - a little new to properly powering speakers

Hello. 

 I have some polk LSIM707s that I thorough enjoy.

However, at the moment I'm powering them using a Yamaha aventage 3070 receiver which at 150 watts at 8ohms sounds pretty darn good. 

However, since these are rated at 300 watts at 8 Ohms, I assume I will need some more power. I notice at lower volumes a lot of the imaging and clarity disappears. 

I am looking at buying a 300 watt emotiva Amplifier, or a 500 watt emotiva amplifier.

I'm assuming it would be better to purchase the 500 watt per channel emotiva so the speakers won't suck it dry or stress it. 

Am i wrong in this assumption? 
moskaudio
moskaudio OP
27 posts
 
I can see that. I figured a fairly expensive flag receiver would produce decent quality power but I guess I should try hooking these up to a 100watt per channel rotel amp I have and see how it sounds.
kosst_amojan
2,095 posts
 
My problem is that all my speakers are either nominally 4 ohm or have nasty impedance low points. Pretty much all receivers get real flabby and stupid below 3 ohm because their power supplies just can't drive current. My F5 has a power supply that doesn't break much sweat swinging 10 amp peaks. It's total overkill for a nominally 32 watt amp and it looses no clarity or depth even as your chair starts shaking.
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mesch
1,679 posts
 
Don't worry about the 300 watt rating on the speakers. That is a max level and no indication of what is needed to drive them in a particular sized room. If you can attain the volume levels desired and are happy with your amp/speaker combo then enjoy.
noromance's avatar
noromance
1,780 posts
 
What Rob and others said. Although, I guess he was joking about the Quads. Your rig sounds pretty good at high volumes but giving it bigger amps will only make it a little louder. You need to get better quality gear to make it sound better at lower volumes.
charles1dad's avatar
charles1dad
6,996 posts
 
Agree with the sentiment of pursuing higher "quality" amplifier (true for all audio products make quality the priority ) rather than higher power. 
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