Using old speakers for real fill

[Trendkill 10+ year member]

I'm going to be putting a brand new system in a 91 camaro. So far I have a rough idea for what I want in terms of head unit, subs, front stage and amps for all of that. Now as for rear fill and/or midbass drivers, I'm not sure that I need/want them. I have some Kenwood KFC-6986 6x9's from my last system that i had around 2000-2001. Should I bother running these off the head units power in the meantime while I decide what I want to do about rear fill/midbass... or would they just sound like garbage compared to the rest of the system.

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[audioholic 5,000+ posts]

They cannot truely be called rear fill unless they are 1) able to be atenuated, and 2) have a bandpass filter on them. Otherwise, they are just rear speakers, and they will hurt your front stage. Some people prefer their sound with an obvious rear stage though. *shrug*

 

[Trendkill 10+ year member]

How expensive would it be to filter them? And would I just be better off selling the 6x9's on ebay?

 

[mlstrass 5,000+ posts]

Since you have them give it a try as it won't cost you anything. You might like how it sounds and that's all that matters.

I run LOUD rear fill and like it....

 

[audioholic 5,000+ posts]

How expensive would it be to filter them? And would I just be better off selling the 6x9's on ebay?

For true rear fill you want to filter out the lowest lows, and most all the highs. So most any decent midrange/mid would work fine. It should be atenuated lower than front stage so as not to draw the stage rearward, only reinforce the front slightly and 'fill' the rear area of your vehicle.

The cost of filtering depends on what you have, and how you want to do it. Your headunit may have the necessary xover, but probably not. Most people end up amping the rearfill (with a small amp) so the h/u and amp's filters can be stacked to create a bandpass effect.

Dont consider the rears as 'midbass' at all. You'll want to filter out the hard impacting midbass anyway, plus having the rears running quieter means no chance for strong midbass. Add to that the fact that midbass should be part of your front stage and its easy to see midbass and rearfill should not be used in the same sentence. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

Hope this helps.

 

[Trendkill 10+ year member]

Ah ok I didn't know that about midbass. I just assumed that midbass was something you could put in the back. Will I be able to get decent midbass from the components that I'm getting? Assuming they are good quality and 5.25 or larger?

 

[audioholic 5,000+ posts]

Ah ok I didn't know that about midbass. I just assumed that midbass was something you could put in the back. Will I be able to get decent midbass from the components that I'm getting? Assuming they are good quality and 5.25 or larger?

Everything is relative. People rave about the abundant midbass possible from the comp set I own (Koda 6.5's) yet Im upgrading to dedicate 8" midbass. But generally speaking yes, get a 6.5 setif possible, noted for strong midbass, and give them plenty of clean power. You will have decent midbass from that setup.

Cheers.

 

[xtremekustomz 10+ year member]

Rearfill.....blah...no need for it unless you are doing surround sound