#1667034 - 06/22/09 02:52 PM
RMS Ratings of Components
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JL_11
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Registered: 03/27/09
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Hey all, my first post here. I was just wondering when looking at component RMS ratings, if it says it handles 75 watts rms is that 75 watts for the tweeter and speaker or is it 75 watts tweeter and speaker together.
Thanks
Nick
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#1667058 - 06/22/09 03:24 PM
Re: RMS Ratings of Components
[Re: JL_11]
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IamMurph
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It only matters if you put 75 watts on them. If you run the 12 radio watts then it doesn't matter if it's 20 or 20,000 watts rms.
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#1667067 - 06/22/09 04:07 PM
Re: RMS Ratings of Components
[Re: JL_11]
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keep_hope_alive
in another life, i'm a serial killer
SD I Power Bombed the Undertaker
Registered: 04/24/07
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Loc: Quad Cities, IL
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75 watts into the crossover. but realize that it is best to have an amplifier that can cleanly provide more than that. you can increase power handling by using a high pass crossover and proper installation.
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#1667276 - 06/22/09 10:16 PM
Re: RMS Ratings of Components
[Re: JL_11]
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JL_11
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Ok thanks and one more question I have is what does it mean to run active and how do you do that?
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#1667974 - 06/24/09 12:11 AM
Re: RMS Ratings of Components
[Re: JL_11]
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Nucking Futs
Car Audio Pro
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Loc: Gilbert, AZ
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Ok thanks and one more question I have is what does it mean to run active and how do you do that?
Running active basically means you ditch the passive crossovers and you have a single channel on your amps dedicated to each individual speaker type (For Example: on a 4 channel amp, using the front channels run the tweeters only, and the rear channels run the midranges only). Doing this is tricky, as you have to know where to crossover each speaker at, and how much power you can run to them. If done right, you can have a much better sounding stereo setup than using passive crossovers, and you can probably get a little louder. A few decks out there have built in active crossover settings and some even have it to where you can set how steep of a slope (roll-off) you want at the cutoff freq. Good amplifiers also have some built in crossovers that you can and should use as well. The plus I like about active is that it allows you to pick and choose (mix and match) what speakers you want. Say you love Dynaudio mids and Morel tweeters. You can do this with active, where a passive crossover unit won't be built to properly crossover the two different types (brands) correctly. Make sure you research this topic and learn everything you can about it first, before you try it. If done wrong you can and will blow something.
I'm sure others on here can add more feedback on this topic too.
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#1669556 - 06/25/09 07:48 PM
Re: RMS Ratings of Components
[Re: Nucking Futs]
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keep_hope_alive
in another life, i'm a serial killer
SD I Power Bombed the Undertaker
Registered: 04/24/07
Posts: 13370
Loc: Quad Cities, IL
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that is a fine description. just understand that going "active" requires both installer skill and user understanding and respect. it's easier to damage your drivers and the gear to make it happen is expensive, but done right it will sound great.
finding amps that have crossover settings in the upper midrange/tweeter range is one challenge. using a good processor or HU with built-in crossovers is recommended.
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