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Advice on Amp vs lower ohm speakers
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<blockquote data-quote="Doxquzme" data-source="post: 8874578" data-attributes="member: 689267"><p>All things considered equal (same woofers make model and size), the theoretical difference is going to be 3 db (roughly 33% difference in volume) if dropping to the 2 ohm load makes the amp put out twice the power at 2 ohms than it did at 4 ohms. Since we're not talking about efficiency and essentially talking about more wattage either way. The ear perceives a doubling of the volume at around 9-10 db. In relationship to power, all things considered equal, an 8 to 1 ratio of increased wattage works as follows.</p><p></p><p>100 watts to 200 watts - +3 db (+33% in vol)</p><p>200 watts to 400 watts - another +3 db (total of 6 db or +66% in vol)</p><p>400 watts to 800 watts - another +3 db (total of 9 db or +99% in vol) or roughly a doubling of the perceived volume to the ear.</p><p></p><p>Important to note: Low impedance drivers don't play louder, the offer less resistance to the amp which in turn extracts more wattage from the amp (the amp must be rated stable at these lower impedances). The volume increase comes from the amp putting out more power.</p><p></p><p>When is comes to bass, wattage is king. Woofers are larger, heavier electric motors and they use power to function, lots of it relatively speaker-ing.</p></blockquote><p></p>
[QUOTE="Doxquzme, post: 8874578, member: 689267"] All things considered equal (same woofers make model and size), the theoretical difference is going to be 3 db (roughly 33% difference in volume) if dropping to the 2 ohm load makes the amp put out twice the power at 2 ohms than it did at 4 ohms. Since we're not talking about efficiency and essentially talking about more wattage either way. The ear perceives a doubling of the volume at around 9-10 db. In relationship to power, all things considered equal, an 8 to 1 ratio of increased wattage works as follows. 100 watts to 200 watts - +3 db (+33% in vol) 200 watts to 400 watts - another +3 db (total of 6 db or +66% in vol) 400 watts to 800 watts - another +3 db (total of 9 db or +99% in vol) or roughly a doubling of the perceived volume to the ear. Important to note: Low impedance drivers don't play louder, the offer less resistance to the amp which in turn extracts more wattage from the amp (the amp must be rated stable at these lower impedances). The volume increase comes from the amp putting out more power. When is comes to bass, wattage is king. Woofers are larger, heavier electric motors and they use power to function, lots of it relatively speaker-ing. [/QUOTE]
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