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#1
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the crossover in component systems
Passive crossovers reduce the power that goes to the speaker because it
increases the impedance right? All the component systems I have seen has a passive crossover that has to be used. Does a coaxial speaker also have crossovers built in? If not how come components produce better sound quality with lower power? |
#2
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the crossover in component systems
Many coaxials also have Xover's. depending on the model. My infinity
6002I has a high pass capacitor to protect the tweeter. the midbass however does not have a Low pass. It relies on the natural roll off of the driver. I think some of the audiobahn coaxials have both HP and LP filters. Garrett JohanWagener wrote: Passive crossovers reduce the power that goes to the speaker because it increases the impedance right? All the component systems I have seen has a passive crossover that has to be used. Does a coaxial speaker also have crossovers built in? If not how come components produce better sound quality with lower power? |
#3
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the crossover in component systems
Yes, there are some insertion losses when using passive crossovers. Higher
quality ones use aircore inductors with heavier guage windings that keep DC resistance to a minimum. The caps, I believe, do not contribute to any increased resistance. Furthermore, most passive units make use of L pads to reduce the power input to the tweeter to help integrate it with the woffers output capabilities. Conventional coax speakers generally make use of a single capacitor resulting in a 6db high pass crossover. The mids are usually allowed to roll off naturally. As a result, and based on the match between woofer and tweeter, there is generally some "overlap" in the higher midrange frequencies. In my experiences, this can lead to a "brighter" or more forward sounding speaker. Components use a low pass network to roll off, or limit, the woofer's output in the upper midrange. Occasionally, the passive crossover is also underlapped by design to suppress any unwanted "bumps" in the region of the crossover point. As a result, components quite often exhibit a smoother overall response ( this is not a hard & fast rule ). - RG "JohanWagener" wrote in message ... Passive crossovers reduce the power that goes to the speaker because it increases the impedance right? All the component systems I have seen has a passive crossover that has to be used. Does a coaxial speaker also have crossovers built in? If not how come components produce better sound quality with lower power? |
#4
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the crossover in component systems
Yes, there are some insertion losses when using passive crossovers. Higher
quality ones use aircore inductors with heavier guage windings that keep DC resistance to a minimum. The caps, I believe, do not contribute to any increased resistance. Furthermore, most passive units make use of L pads to reduce the power input to the tweeter to help integrate it with the woffers output capabilities. Conventional coax speakers generally make use of a single capacitor resulting in a 6db high pass crossover. The mids are usually allowed to roll off naturally. As a result, and based on the match between woofer and tweeter, there is generally some "overlap" in the higher midrange frequencies. In my experiences, this can lead to a "brighter" or more forward sounding speaker. Components use a low pass network to roll off, or limit, the woofer's output in the upper midrange. Occasionally, the passive crossover is also underlapped by design to suppress any unwanted "bumps" in the region of the crossover point. As a result, components quite often exhibit a smoother overall response ( this is not a hard & fast rule ). - RG "JohanWagener" wrote in message ... Passive crossovers reduce the power that goes to the speaker because it increases the impedance right? All the component systems I have seen has a passive crossover that has to be used. Does a coaxial speaker also have crossovers built in? If not how come components produce better sound quality with lower power? |
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