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<blockquote data-quote="mvw2" data-source="post: 2773508" data-attributes="member: 574722">Know the model number?&nbsp; Looked for any product information/user manuals from Rainbow&#039;s site?Although the range is listed from 55Hz to 6000Hz, 55Hz generally being the resonance frequency, Fs, the usable upper end normally not so usable.&nbsp; If I were to guess, you&#039;d be looking at 2000Hz to 3000Hz tops for a normal 6.5&quot; woofer.&nbsp; The 2000Hz-3000Hz x-over range is very common for most 6.5&quot; woofers and a good bet for a starting point.&nbsp; If you&#039;re running active, you are free to play around with x-over points and slopes and find the best setup.&nbsp; If you plan on buying/building a passive x-over for it, then you kind of have to shoot for a safe point and hope all turns out well, lol, not exactly the best route.&nbsp; There are a lot of relatively affordalbe high end HUs capable of controlling an active setup, Pioneer&#039;s DEH-P880PRS being a good one at under $300.&nbsp; There are also plenty of basic to extensive seperate x-over processing components available as well.&nbsp; Heck, even some amps do have full x-over control to handle a 2-way + sub setup, although, they&#039;re usually not cheap.You didn&#039;t really say what you had for hardware, so I&#039;m just sort of providing some suggestions.&nbsp; If all you needed was a good starting point, 2000Hz to 3000Hz should be your sweet spot.&nbsp; It just sort of depends on how high the woofer can play before introducing distortion/breakup/beaming and how low the tweeter can play before you start over excurting it.</blockquote>

[QUOTE="mvw2, post: 2773508, member: 574722"] Know the model number? Looked for any product information/user manuals from Rainbow's site? Although the range is listed from 55Hz to 6000Hz, 55Hz generally being the resonance frequency, Fs, the usable upper end normally not so usable. If I were to guess, you'd be looking at 2000Hz to 3000Hz tops for a normal 6.5" woofer. The 2000Hz-3000Hz x-over range is very common for most 6.5" woofers and a good bet for a starting point. If you're running active, you are free to play around with x-over points and slopes and find the best setup. If you plan on buying/building a passive x-over for it, then you kind of have to shoot for a safe point and hope all turns out well, lol, not exactly the best route. There are a lot of relatively affordalbe high end HUs capable of controlling an active setup, Pioneer's DEH-P880PRS being a good one at under $300. There are also plenty of basic to extensive seperate x-over processing components available as well. Heck, even some amps do have full x-over control to handle a 2-way + sub setup, although, they're usually not cheap. You didn't really say what you had for hardware, so I'm just sort of providing some suggestions. If all you needed was a good starting point, 2000Hz to 3000Hz should be your sweet spot. It just sort of depends on how high the woofer can play before introducing distortion/breakup/beaming and how low the tweeter can play before you start over excurting it. [/QUOTE]

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