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Audio and Video Talk
Audio Visual Technology
Powering Polk Audio RTI A9's to full 500w?
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<blockquote data-quote="LAV" data-source="post: 51311" data-attributes="member: 1123"><p>The relationship between power and sound pressure level is very interesting. 1 dB is seen as the smallest change the human ear can detect. As an example, to obtain a 3 dB increase in level, you would typically need to double the power.</p><p></p><p>What this means is that it is highly unlikely that you should ever need (or want) to drive your Polks at 500 W. Once you get past a couple of tens of Watt, the sound level will already be very high, i.e. extremely loud.</p><p></p><p>What is important is to have an amplifier with sufficient reserve capacity (headroom) so that it can cope with the demands of all types of music. Any well-designed amplifier with a decent power supply will drive a reasonably sensitive speaker to high levels.</p><p></p><p>It should be possible to find a decent quality used power amp for anything from R3000 to >R15000 depending on your preference, the amp's power, age and of course brand. New: Much more expensive.</p><p></p><p>That Onkyo is probably quite capable as it is.</p></blockquote><p></p>
[QUOTE="LAV, post: 51311, member: 1123"] The relationship between power and sound pressure level is very interesting. 1 dB is seen as the smallest change the human ear can detect. As an example, to obtain a 3 dB increase in level, you would typically need to double the power. What this means is that it is highly unlikely that you should ever need (or want) to drive your Polks at 500 W. Once you get past a couple of tens of Watt, the sound level will already be very high, i.e. extremely loud. What is important is to have an amplifier with sufficient reserve capacity (headroom) so that it can cope with the demands of all types of music. Any well-designed amplifier with a decent power supply will drive a reasonably sensitive speaker to high levels. It should be possible to find a decent quality used power amp for anything from R3000 to >R15000 depending on your preference, the amp's power, age and of course brand. New: Much more expensive. That Onkyo is probably quite capable as it is. [/QUOTE]
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Audio and Video Talk
Audio Visual Technology
Powering Polk Audio RTI A9's to full 500w?
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