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Wiring, Electrical & Installation
3 ohm speakers bridged - Will amp be okay?
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<blockquote data-quote="keep_hope_alive" data-source="post: 8659654" data-attributes="member: 576029"><p>Hi there.</p><p></p><p>The idea behind selling "3 ohm speakers" is that the wiring and connector resistance makes up about 1 ohm, bringing the load on the amp closer to 4 ohm nominal. </p><p></p><p>Also note that the impedance of a speaker system is not constant, but instead varies with frequency. You have spikes around Fs and then spikes due to coil inductance and crossover effects. So what we consider "nominal" is more like "minimum". </p><p></p><p>You are using the head unit HPF correctly. The passive crossover only provides a low pass for the woofer (around 4,000Hz) and a high pass for the tweeter (around the same point). The passive crossover does not provide a HPF for the woofer. You are correct to apply a HPF around 100Hz (even down to 60-80Hz is fine with some setups). </p></blockquote><p></p>
[QUOTE="keep_hope_alive, post: 8659654, member: 576029"] Hi there. The idea behind selling "3 ohm speakers" is that the wiring and connector resistance makes up about 1 ohm, bringing the load on the amp closer to 4 ohm nominal. Also note that the impedance of a speaker system is not constant, but instead varies with frequency. You have spikes around Fs and then spikes due to coil inductance and crossover effects. So what we consider "nominal" is more like "minimum". You are using the head unit HPF correctly. The passive crossover only provides a low pass for the woofer (around 4,000Hz) and a high pass for the tweeter (around the same point). The passive crossover does not provide a HPF for the woofer. You are correct to apply a HPF around 100Hz (even down to 60-80Hz is fine with some setups). [/QUOTE]
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3 ohm speakers bridged - Will amp be okay?
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