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Minimum Amp power for spkr performance

Hi, What does the spkr's label as Nominal/musical power(w):150/300 really mean ? Does it mean it requires at least 150W Amp power to drive it ? Would a 50W amp-power(8ohm)be enough power to drive the spkr properly ? Your opinion and suggestion is highly appreciated and thanks in advance
Simon - PS :the spkr is of 89dB sensitivity(4-8ohm)
simonleemd

Showing 1 response by elevick

elevick
2,638 posts
 
an 89db 8 ohm speaker is relatively easy to drive:
1 watt = 89db
2 watts = 92db
4 watts = 95db
8 watts = 98db
16 watts = 101db
32 watts = 104db
64 watts = 107db
132 watts = 110db THX certified levels
Most amps have different wattage rating for different impedances. Many are 100 @8ohms and 170 to 200 @4ohms.
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