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<blockquote data-quote="Doxquzme" data-source="post: 8873013" data-attributes="member: 689267">The difference in 96 to 98 db is going to net you about an 22% difference in output, all things considered equal. When it comes to 325 per channel compared to 225 watts per channel, another 10% increase in volume. The ear perceives the doubling of volume at 9-10 db.225 to 450 watts - 3 db450 watts to 900, another 3db900 watts to 1800 watts, another 3dbThis is the point that the ear would perceive a doubling of volume - just want to set expectations.If you want an increase of 4 to 4.5 db, you&#039;ll need to go with those 98 db speakers and double the output of that 225 watt per channel amplifier or to 450 watts a channel to achieve a mere 50% increase in total volume (which is still substantial) - that gets REAL expensive as only high end drivers and something like the SPF 1000.4D&nbsp; at two ohms will deliver in full range multi-channel amplification.I would recommend an amp like that and doubling the number of the speakers you have now and run the Sundown SPF 1000.4D (and yes I&#039;m selling one, BNIB, but actually one of the few that will deliver what you need) in 4 channel 2 ohm mode. Gets you to 500+ watts x 4 and doubling the driver count will get you to about a 6 db increase in volume or about 66% louder than what you have currently. High wattage and multiple drivers is the way to go to reach your objective.If not double the driver count, then high power w/high efficiency, more expensive pro/pa drivers will suffice.</blockquote>

[QUOTE="Doxquzme, post: 8873013, member: 689267"] The difference in 96 to 98 db is going to net you about an 22% difference in output, all things considered equal. When it comes to 325 per channel compared to 225 watts per channel, another 10% increase in volume. The ear perceives the doubling of volume at 9-10 db. 225 to 450 watts - 3 db 450 watts to 900, another 3db 900 watts to 1800 watts, another 3db This is the point that the ear would perceive a doubling of volume - just want to set expectations. If you want an increase of 4 to 4.5 db, you'll need to go with those 98 db speakers and double the output of that 225 watt per channel amplifier or to 450 watts a channel to achieve a mere 50% increase in total volume (which is still substantial) - that gets REAL expensive as only high end drivers and something like the SPF 1000.4D at two ohms will deliver in full range multi-channel amplification. I would recommend an amp like that and doubling the number of the speakers you have now and run the Sundown SPF 1000.4D (and yes I'm selling one, BNIB, but actually one of the few that will deliver what you need) in 4 channel 2 ohm mode. Gets you to 500+ watts x 4 and doubling the driver count will get you to about a 6 db increase in volume or about 66% louder than what you have currently. High wattage and multiple drivers is the way to go to reach your objective. If not double the driver count, then high power w/high efficiency, more expensive pro/pa drivers will suffice. [/QUOTE]

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