Using SPL calculators - how to account for subwoofer offloading? - AVS | Home Theater Discussions And Reviews
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post #1 of 1 Old 04-11-2012, 03:13 AM - Thread Starter
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There are many useful online tools for calculating what sort of power one really needs in an amplifier/receiver, such as for example:
http://crownaudio.com/apps_htm/desig...ct-pwr-req.htm
http://myhometheater.homestead.com/splcalculator.html

However, are these tools actually accurate for multichannel systems where the job of powering the bass frequencies is offloaded to powered subwoofers? In that scenario, wouldn't these tools be actually recommending far more amplifier power what is actually needed to drive satellite/non-full range speakers to specific SPL levels?

Is some other sort of tool needed to calculate this? Perhaps one that includes presence of subwoofer and the cutoff frequency?
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