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need a graph on how crossovers work
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<blockquote data-quote="req" data-source="post: 1640670" data-attributes="member: 555713"><p><img src="http://i2.tinypic.com/szgcbb.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>as you can see, the tweeter will still play into the high 800hz range, and the midrange will still play into the 9khz range.</p><p></p><p>these numbers are purely for describing purposes. i do not know if that is the actual angle of the slope @ -12db. i just guessed. it could be less steep, or it could be more steep. i just drew this up in photoshop so you could understand what a crossover does.</p><p></p><p>so to clarify, as you go lower in frequency PAST the crossover point, your tweeter will be still playing, but for every octave you drop (octave = one halve, for example, an octave below 100hz is 50hz.) the tweeter will be -12db quieter than the "refrence" level of the stereo - aka, the average level of loudness over the ENTIRE frequency band (20hz to 20khz).</p><p></p><p>its not very complicated, just very hard to describe without a picture //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif</p><p></p><p>hope this helped.</p><p></p><p>ps, crossover points dont "have to" be crossing at -3db, they NORMALLY do however. if you want a natrual "equalization" at the crossover point, you could move it to -2 to boost those frequencies a litte, or -4 to cut them natrually. normally, the -3 point is where they are on passive crossovers without equalization circuits ect.</p><p></p><p>pps, the graph i showed you is of a PERFECT pair of speakers that would win you a gold medal at the national SQ competition. actual frequency response of a pair of speakers will vary but should resemble the lines wich are imaginary i remind you //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif</p><p></p><p>*EDIT*</p><p></p><p>i just realized that the slope of the crossover i put on there is close to exact. a 12db\octave slope would be -12 (for the tweet) @ 2000hz, i randomly drew those lines lawl. and the slope for the midrange is right on 8khz wich is one octave above, so that one is freakin perfect. so the slopes are actually quite accurate and shuold be similar to what you are actually hearing in your car if your xover point is @ 4000hz.</p></blockquote><p></p>
[QUOTE="req, post: 1640670, member: 555713"] [IMG]http://i2.tinypic.com/szgcbb.gif[/IMG] as you can see, the tweeter will still play into the high 800hz range, and the midrange will still play into the 9khz range. these numbers are purely for describing purposes. i do not know if that is the actual angle of the slope @ -12db. i just guessed. it could be less steep, or it could be more steep. i just drew this up in photoshop so you could understand what a crossover does. so to clarify, as you go lower in frequency PAST the crossover point, your tweeter will be still playing, but for every octave you drop (octave = one halve, for example, an octave below 100hz is 50hz.) the tweeter will be -12db quieter than the "refrence" level of the stereo - aka, the average level of loudness over the ENTIRE frequency band (20hz to 20khz). its not very complicated, just very hard to describe without a picture [IMG]//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif[/IMG] hope this helped. ps, crossover points dont "have to" be crossing at -3db, they NORMALLY do however. if you want a natrual "equalization" at the crossover point, you could move it to -2 to boost those frequencies a litte, or -4 to cut them natrually. normally, the -3 point is where they are on passive crossovers without equalization circuits ect. pps, the graph i showed you is of a PERFECT pair of speakers that would win you a gold medal at the national SQ competition. actual frequency response of a pair of speakers will vary but should resemble the lines wich are imaginary i remind you [IMG]//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif[/IMG] *EDIT* i just realized that the slope of the crossover i put on there is close to exact. a 12db\octave slope would be -12 (for the tweet) @ 2000hz, i randomly drew those lines lawl. and the slope for the midrange is right on 8khz wich is one octave above, so that one is freakin perfect. so the slopes are actually quite accurate and shuold be similar to what you are actually hearing in your car if your xover point is @ 4000hz. [/QUOTE]
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need a graph on how crossovers work
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