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Not to sound dumb, but i'm not sure what is meant by "bi-amping?" Is this when you install two amps to push a component set? One to the tweet and one to the midbass? If i run a single amp through my xovers, that is pushing like 350w @ 4ohms, how much of that reaches the tweet? Oh, if your unsure i'm running Boston Pro 6.5-minus the tweet. The replacement tweet may be Kappa 10.1T, Dynaudio, Canton, or Accuton (if i can find a person to audition them for me.). Thanks for any clarification!!!
------------------ You want kick back, torque, and mondo HP. Then you need a serving of ATI!!!! Blowing 'stangs since 1990.
Posts: 83 | From: Woodburn, IN, USA | Registered: Mar 2000
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I've always understood it to be one amp to the mids and one to the tweets. That's how we did it on stage, and how a lot of home speaker manufacturers do their bi-amped speakers (normally, split between the woofers and the mid/tweets).
As far as how much is sent to the tweeter from the x-over....hrm....often wondered that myself. I'm sure one of the more technical guys has a logorith or chart with 350 RMS to an x-over = X wattage to Tweeter already planned out in a drawer or plastered to a wall. (No offense meant, I wish I could remember and work with numbers like that, get too mixed up and flipped around for me).
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Generally, half to the tweeter and half to the mid. But the actual power will depend on what frequency is played because impedence is frequency dependent.
Just think half and half. In your case 175 to the mid and 175 to the tweeter.
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Posts: 7993 | From: Charlotte,NC USA | Registered: May 1999
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Winslow: Then why does Boston claim there components can handle 400 watts? I would think even with the impedence being dependent on frequencey, that occassionally i'll hit that frequency that will lower the impedence enough to send it that high of wattage. Sorry for the useless babble, but just playing with physics you replied with. Thanks
------------------ You want kick back, torque, and mondo HP. Then you need a serving of ATI!!!! Blowing 'stangs since 1990.
Posts: 83 | From: Woodburn, IN, USA | Registered: Mar 2000
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400 watts RMS? Or 400 watts peak? In any case they probably could handle that much power from a clean, unclipped signal. 400 watts RMS is ALOT of power.
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Posts: 7993 | From: Charlotte,NC USA | Registered: May 1999
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Most likely a tweet. is more sensitive than a mid driver.
An example, RF FNQ 5.25" comp. set (87dB): Tweet - 90dB 5.25" mid - 87dB
As we can see the tweet has a 3dB advantage on the mid. As we know, twice the power = 3dB increase. The mid needs twice the power the tweet gets to play equally loud. The comp set has the same efficiency as the mid.
This describes most component sets, allthough the difference between tweet and mid will vary slightly between different brands. This ofcourse is very simplified since many factors varies at different frequencies.
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I biamped the front end of my car. (3) Zapco competition 200's to run (2) Morel 6 1/2 and (2) Morel tweeters.
The problem I had was getting the crossover slope right. Believe it or not, the high pass needed to be 6 db/octave for best results, so I wound up running all three amps from 100hz and up, through passive crossovers.
------------------ CraigMBA teamROCS#115 IASCA Zone 10 Champion 301-600 Amatuer
Posts: 288 | From: Chino Hills, CA, USA | Registered: Sep 1999
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That's 400 watts RMS. Boston has repeatedly told me not to worry, but i think i'm gonna end up with a blown tweeter even with a clean, unclipped signal. Any suggestion on power rating if i go with the Kappa tweets. The Kappa 10.1T can handle 100w w/ the4 correct crossover, so would this take the 400 RMS? Thanks
------------------ You want kick back, torque, and mondo HP. Then you need a serving of ATI!!!! Blowing 'stangs since 1990.
Posts: 83 | From: Woodburn, IN, USA | Registered: Mar 2000
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