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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Audio/Video/Electronics Forum [GEN 2]
DIY stereo upgrade for under $500.00
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<blockquote data-quote="dhmcfadin" data-source="post: 1450158" data-attributes="member: 27229"><p>I forgot to mention the most important reason active is preferred in a vehicle: in a vehicle, speakers are placed in various different locations and axis from the listening position. Unlike a high fidelity home audio systems where your listening position is on axis and centered both horizontally and vertically of each speaker, a vehicles speakers are off axis and far from centered of the listening position. Every speaker that utilizes a conical shaped cone will exhibit a different frequency response and crossover point when placed on different axis from the listeners position. We need to compensate for this. Think about your door speakers, they are 90 degrees off axis from your listening position. There is tremendous change in response when a speaker is this far off axis. When you run a passive crossover network, you utilize a physical crossover that sets in stone the crossover point for each speaker. (tweeter + midbass in a component system). This crossover point is predetermined and cannot be changed. This is called an electrical crossover. Going back the on-axis vs off-axis response, an electrical crossover cannot account for the speakers axis. What do you think happens to a speakers crossover point and frequency response when it is played off axis from the listener? The crossover point changes and the audible frequency response changes as a result. This change is called the acoustical crossover. In a vehicle, it is crucial to be able to correct for this. We do this by measuring the frequency response of each speaker and determine what the acoustical crossover point is based on each speakers position. We then correct for the off-axis response by adjusting our electrical crossover via a dsp so that the acoustical response and acoustical crossover point matches what the electrical crossover point should be. Without an active crossover network and dsp, you cannot correct for this. This correction is crucial for a sound quality system of any kind.</p></blockquote><p></p>
[QUOTE="dhmcfadin, post: 1450158, member: 27229"] I forgot to mention the most important reason active is preferred in a vehicle: in a vehicle, speakers are placed in various different locations and axis from the listening position. Unlike a high fidelity home audio systems where your listening position is on axis and centered both horizontally and vertically of each speaker, a vehicles speakers are off axis and far from centered of the listening position. Every speaker that utilizes a conical shaped cone will exhibit a different frequency response and crossover point when placed on different axis from the listeners position. We need to compensate for this. Think about your door speakers, they are 90 degrees off axis from your listening position. There is tremendous change in response when a speaker is this far off axis. When you run a passive crossover network, you utilize a physical crossover that sets in stone the crossover point for each speaker. (tweeter + midbass in a component system). This crossover point is predetermined and cannot be changed. This is called an electrical crossover. Going back the on-axis vs off-axis response, an electrical crossover cannot account for the speakers axis. What do you think happens to a speakers crossover point and frequency response when it is played off axis from the listener? The crossover point changes and the audible frequency response changes as a result. This change is called the acoustical crossover. In a vehicle, it is crucial to be able to correct for this. We do this by measuring the frequency response of each speaker and determine what the acoustical crossover point is based on each speakers position. We then correct for the off-axis response by adjusting our electrical crossover via a dsp so that the acoustical response and acoustical crossover point matches what the electrical crossover point should be. Without an active crossover network and dsp, you cannot correct for this. This correction is crucial for a sound quality system of any kind. [/QUOTE]
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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Audio/Video/Electronics Forum [GEN 2]
DIY stereo upgrade for under $500.00
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