Join Date: Jun 2009
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SPL = Sound Pressure Level. How loud the sound is for a given reference input level.
Under– Driven appears to come from the misconception that if you use a speaker rated at 300watt RMS and you drive it with an amp that can only deliver 50 watts RMS you will destroy the speaker if you try to push more than 50 watts into the speaker. Apparently they think that you won’t notice the amplifier clipping with a high power speaker (what utter rubbish!) so you may inadvertently damage the speaker. That appears to be what the golden ear forums are trying to say? it makes no sense to me as it is technically incorrect.
It’s a misconception because almost any speaker will be destroyed when driven from a solid state amplifier that is driven into output clipping (distortion) because of the associated high DC level causing high current (long duration) into the voice coil.
This is where a little knowledge causes these incorrect terms. Some will try to say that a low power speaker will distort before the amp is overdriven so you won’t blow it, also incorrect. A low power speaker will have the voice coil pushed past its limits of travel if it’s over driven, you will hear a clicking sound or a thin reduced sound just before the speaker open circuits.
Fact: Almost all distortion you hear from a speaker is from the amplifier distorting either by output clipping or input signal overload distortion. Please! No response about the cone hitting the grill, loose dust caps, voice coil polling or other mechanical faults, these are completely different sounds and do not change the above fact.
Just look for a speaker with an SPL of 89db or more, from a known brand and you should be right, most 6x9 should handle the power of the stock system. It gets a lot more complicated when going to high end, splits or active systems.
04 - V6 Auto Luxury Accord (Thail build).
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