Component Speakers - Should I use HPF?

[krpto1973 10+ year member]

If I am going to be using component speakers with an external crossover, should I still the HPF from the amp, or should I let the bass get to the componets? What would you do and why?

And if it matters, Yes, I will have a seperate amp with 2 10 inch subs.

Thanks

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[krpto1973 10+ year member]

Nevermind, I did some more research and found the answers. Thanks

Just in case I am wrong, can anyone verify this answer.

The component speakers have a tweeter and a woofer. The external crossover will split the signal between the two pieces (hi and low). However, on the low side, a woofer is more mid range then a subwoofer, and therefore I still want to use the HPF to stop the real low frequencies (subwoofer type freqs) from getting to the components woofers.

Thanks

 

[Cruzer 10+ year member]

thats correct. where are ur subs crossed at? if for example they are crossed at 80 or 85 hz, u could do ur components at 65 or 75 so they try and blend well

 

[krpto1973 10+ year member]

Right now, the subs are set no where, unless you count "on my couch as somewhere" //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif all the pieces are bought and sitting in my living room. I won't have time to do my install for about 2 weeks. I am just trying to work out all the confusing areas before I start connecting things.

And I think using different frequencies for blending well... is a bit beyond my abilities and knowledge base, at the moment. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[Cruzer 10+ year member]

no its not, promise.

most people use 75-80hz lpf on their subs, in which case u want to hpf your mids of the component set to no higher than the subs, but something like 60,65, or 70 hpf would work great with the 75-80hz lpf on the subs. that way the components can take lots of power and play notes that wont hurt them yet try and help so u dont hear all the bass from behind you

 

[krpto1973 10+ year member]

Well I appreciate it. I will definitly start the settings there, and see if I can tell what I like. I am just not sure that my ear is that ... tuned.

I don't suppose you can help explain the slope thing, and how to utlize that. My head unit (JVC KW-NT3HDT) has setting for that as well. Of course the menaul does not explain how thos setting really affect anything. They talk about "falling off quicker", but I don't know what that realy means in the real world.

 

[Bumpin' Goalie 10+ year member]

Slope is also preferential.

Controls how drastic the drop-off will be. A steeper slope is one with a higher numerical value.

 

[krpto1973 10+ year member]

See, I understand the user preference part, but the rest is greek to me. In turns of sound and what I am hearing, how does that information relate?

 

[Bumpin' Goalie 10+ year member]

See, I understand the user preference part, but the rest is greek to me. In turns of sound and what I am hearing, how does that information relate?

Steeper slope = faster reduction of output for frequencies above/below crossover point.

 

[krpto1973 10+ year member]

No Habla Audiophile //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Dude, I appreciate the attempt, and I understand the gist of that, but I still have no idea how that applys to what I hear coming out of the speakers. I do appreciate you trying though!. Thanks

 

[Cruzer 10+ year member]

basically a slope does this. say u set your hpf on your components to 70hz with a 12db slope. when it plays say a 30hz tone, its 12db quieter than it normally would be without the slope. all it does it make it play quieter so it doesnt hurt the speaker. then if u change it to a 24db slope, its even quieter, than the 12 db at any given frequency under the 70hz filter.

honestly im not that experience with it, but for example, some mids can only play certain frequencies. anything over a given amount, even 12 db quieter, it affect the sound and it sounds like crap. so those u might need 24, or 32db slopes so any frequency cut off isnt audible, or its only audible in a way that it doesnt sound bad.

hope that helps or is close enough u can get an idea. most people i would say use 12 and 24. 12 if possible, and 24 if it doesnt sound right and needs to be quieter to not sound bad

 

[audioholic 5,000+ posts]

No Habla Audiophile //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
Dude, I appreciate the attempt, and I understand the gist of that, but I still have no idea how that applys to what I hear coming out of the speakers. I do appreciate you trying though!. Thanks

When you apply a crossover to a speaker, say at 80hz, it is not a brick wall where no sound below 80 passes through (contrary to popular belief). The sound below 80hz decreases at a rate dictated by the 'slope' of the crossover. A steeper slope is one in which the sound diminishes quicker below the cutoff frequency, as described above by cruzer in the form of decibels per octave. An octave is a halving of the frequency. 40hz is one octave below 80hz. 20hz is 2 octaves below 80hz. Etc.

Hopefully this makes the other replies in this thread more understandable.

 

[krpto1973 10+ year member]

Actually it does make sense with the additional posts. Thank you guys. Now if I can just apply it to my setup when my install is complete!!!

I appreciate the information. Thank You