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Speaker Effeciency and Bass Production

How much speaker efficiency is gained if the bottom two octaves or so don't need to be produced? I'm considering trying an SET or OTL amp but am wondering about the ability of these amp types to drive my speakers (Opera Quinta; 89db efficiency and 6 ohm nominal impedance; 6-8 ohms from 100Hz up). I am using a pair of corner placed subwoofers which can easily produce the lower 2-3 octaves. So the question is if the amps driving the main speakers don't have to produce anything below 100Hz or so, then is the ability to use them on my main speakers more doable? The room is fairly large, but I sit only around 10 feet from them.
smeyers
cyclonicman
693 posts
 
Really, probably pretty expensive?
cyclonicman
693 posts
 
Atmasphere, I was curious and so I just viewed the MA-3 monoblocks which as you said can deliver 500 Watts. An amazing piece of hardware, it looks bigger than my furnace.
smeyers OP
181 posts
 
Thanks Racamuti. I believe the crossovers in the main speakers (Opera Quinta) are relatively simple, and I am doing the crossover between the subs and main speakers in the digital domain (using a Tact 2.2XP). I listen to a range of music, but singer-songwriter music is what I listen to most. I do also enjoy the occasional 100db+ blast of a good rock or classical tune, but it is more the exception. The room is fairly large, but I sit only about 10 feet from the main speakers. I had been considering the ASL amp (as mentioned in an earlier post). The little ASL Wave 20's have been the most reliable tube amps that I have had, and have not even needed a tube change in over two years of 10 hours per day use in an office system.
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