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Need help understanding slope - system details noted
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<blockquote data-quote="maylar" data-source="post: 8439942" data-attributes="member: 541144"><p>The slope refers to how quickly the filter attenuates, and how much output there will be at frequencies "close" to the setting.</p><p></p><p>Let's say you set the filter at 80 Hz and 12dB/octave. At 160 Hz (one octave above) power will be down 12dB, which is 1/16th power. With 24dB/octave it'll be only .004 times the 80 Hz power... basically nothing.</p><p></p><p>This means that the 24dB setting "kicks in" a lot faster, and 12dB still allows for a little output at frequencies above the setpoint. For a system with stock speakers and headunit power, I'd use the 12dB setting. It'll allow the sub to contribute a bit of midbass at the low end of where the speakers start to taper off.</p><p></p><p>If however you're doing a boom box system with mega watts of sub, you may find that the output at 100 Hz is unbearable. In that case, use the 24dB setting to limit the upper bass frequencies from the sub.</p><p></p><p>In systems with amped front stage it's nice to have that 24dB slope on the hipass. You can dial the low end down to get maximum bass from the speakers without hitting the mechanical stops.</p><p></p><p>HTH</p></blockquote><p></p>
[QUOTE="maylar, post: 8439942, member: 541144"] The slope refers to how quickly the filter attenuates, and how much output there will be at frequencies "close" to the setting. Let's say you set the filter at 80 Hz and 12dB/octave. At 160 Hz (one octave above) power will be down 12dB, which is 1/16th power. With 24dB/octave it'll be only .004 times the 80 Hz power... basically nothing. This means that the 24dB setting "kicks in" a lot faster, and 12dB still allows for a little output at frequencies above the setpoint. For a system with stock speakers and headunit power, I'd use the 12dB setting. It'll allow the sub to contribute a bit of midbass at the low end of where the speakers start to taper off. If however you're doing a boom box system with mega watts of sub, you may find that the output at 100 Hz is unbearable. In that case, use the 24dB setting to limit the upper bass frequencies from the sub. In systems with amped front stage it's nice to have that 24dB slope on the hipass. You can dial the low end down to get maximum bass from the speakers without hitting the mechanical stops. HTH [/QUOTE]
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Need help understanding slope - system details noted
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