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Car Audio Equipment
Subwoofers
Best sub for clarity?
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<blockquote data-quote="JohnEJanowitz" data-source="post: 4528155" data-attributes="member: 584636"><p>No problem at all. The particular woofer I'm talking about is more of a midbass woofer. We use them in PA systems, studio monitors, large home theaters, etc from say 45Hz on up. The high bandwidth up to 4KHz gives a lot of room for crossover and allows for lots of options to mate to on the top end. Our other TD woofers have similar characteristics and can be used up to 2KHz or so and are used for woofer and subwoofer use. You may not need the high frequency extension, but it's not a bad thing either. You do want the other benefits that come with the copper shorting ring though, low inductance, linear inductance, low distortion, better heat dissipation, etc. As the other paper mentions, how "fast" a woofer is really depends mainly on how high it can play as speed is proportional to frequency. A woofer that can play 2KHz accurately can play quite well at any frequency needed for woofer use as well.</p><p></p><p>Also, in most cases you want a woofer that is clean electrically to several octaves above the highest frequency you are going to use it. This does apply to car woofers as well, especially with so many of the huge, high inductance coils out now days. Our old HE15 made by TC sounds had inductance so high that it would actually have a big peak at 75Hz and roll off quickly after. In this range, distortion skyrocketed and there was quite a resonance. It's a good idea to have a woofer that is electrically flat up to the point where your xover is going to be 48dB down. This means if your xover is 75hz at 24dB, you want it electrically flat up to 300Hz or higher. This means that the xover will work properly without a lot of phase shift caused by the inductance, and without distortion added by inductive rise.</p><p></p><p>Linear inductance with excursion is also a very important point. You want the core inside the VC to be the same at all excursions.</p><p></p><p>John</p></blockquote><p></p>
[QUOTE="JohnEJanowitz, post: 4528155, member: 584636"] No problem at all. The particular woofer I'm talking about is more of a midbass woofer. We use them in PA systems, studio monitors, large home theaters, etc from say 45Hz on up. The high bandwidth up to 4KHz gives a lot of room for crossover and allows for lots of options to mate to on the top end. Our other TD woofers have similar characteristics and can be used up to 2KHz or so and are used for woofer and subwoofer use. You may not need the high frequency extension, but it's not a bad thing either. You do want the other benefits that come with the copper shorting ring though, low inductance, linear inductance, low distortion, better heat dissipation, etc. As the other paper mentions, how "fast" a woofer is really depends mainly on how high it can play as speed is proportional to frequency. A woofer that can play 2KHz accurately can play quite well at any frequency needed for woofer use as well. Also, in most cases you want a woofer that is clean electrically to several octaves above the highest frequency you are going to use it. This does apply to car woofers as well, especially with so many of the huge, high inductance coils out now days. Our old HE15 made by TC sounds had inductance so high that it would actually have a big peak at 75Hz and roll off quickly after. In this range, distortion skyrocketed and there was quite a resonance. It's a good idea to have a woofer that is electrically flat up to the point where your xover is going to be 48dB down. This means if your xover is 75hz at 24dB, you want it electrically flat up to 300Hz or higher. This means that the xover will work properly without a lot of phase shift caused by the inductance, and without distortion added by inductive rise. Linear inductance with excursion is also a very important point. You want the core inside the VC to be the same at all excursions. John [/QUOTE]
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Best sub for clarity?
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