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Here is the equipment that i have:

Kenwood Kdc-x869 head unit
Mb quart 6.5 components pce-216 in doors with tweeter attached to the speaker
Boston acoustic 6X9 3 ways
Precision power 300/4 amp (interiors)
jbl 300.1 amp (subs)
2 10 infinity ref. in a custom made sealed box

here are the functions on my head unit:

bass:

Bass center freq. Range: 60/70/80/100 or 150 hz
bass level: -8 -- +8
Bass Q factor: 1.00/1.25/1.50/2.00
Bass Extend: on/off

mid:

middle center freq. Range: .5/1.0/1.5/2.0 khz
Middle Level: -8 -- +8
Middle Q Factor: 1.0/2.0

treble:

Treble center freq. Range: 10.0/12.5/15.0/17.5 khz
Treble level: -8 -- +8


On top of that, there are these functions also:

front high pass filter: Through/40/60/80/100/120/150/180/220hz
rear high pass filter: Through/40/60/80/100/120/150/180/220hz
non-fading low pass filter: 50/80/120/through hz
loudness
wow
trubass
focus
srs
volume offset: -8 -- +=0
non-fading level: -15 -- +15
non-fading phase: normal (0 degrees)/Reverse (180 degrees)

Most of you will say to set the eq on the headunit to off or 0 but the functions like bass,mid,treble freq. , also the front/rear high pass filter, non-fading low pass filter, volume off set, and non-fading level/phase all cannot be igored. there is no "off" or "0" option.

Here are the functions of my Precision power amp:

-- Qbass level control: centered at 40 hz with up to 18db of boost.

-- -12db attenuation switch: push this switch "IN" for high voltage input (4v-12v) capability

-- Front freq control: 30hz to 4 khz

-- front HP/LP/FULL switch: select desired crossover setting

-- source HP/LP/FULL switch: hp/lp/full for the internal signal from the front channel to the rear channel when not using an external rear rca input

-- rear HP/LP/FULL switch: select desired crossover setting

-- Rear input INT/ext switch: select INT position if you want to use the internal signal path from the front crossover for the rear input, or the EXT position to use the external rear RCA input

-- source HP/LP/FULL switch: hp/lp/full for the internal signal from the front channel to the rear channel when not using an external rear rca input

--rear freq control: 30hz to 4 khz

-- rear sum/rear switch: SUM= using the rca output signnal summed from the front and rear audio channels, Rear= input off of the rear channel only for basspass capablility


I have read alot of post and know most of the knowledgeble people on this forum do little to nothing with their headunit eq functions. but without using them my system doesn't sound good at all. on top of that i don't know if the quarts crossovers need to be adjusted. The amp features that i mentioned are the ones i don't understand how to use or what they do.

i know this is a long post sorry about that, but any help you guys/girls can give me would really help me out.

thanks everyone

 
Rep Power: 310

First things first. Where are your install locations, mids, tweets.

 
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the 6.5 are in the doors with the tweets mounted on the speakers itself (on-axis), the 6x9 are in the stock location

 
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For starter set your front and rear high pass filters to 80hz. That is so they will not get lower frequencies that would damage them. But dont worry about not hearing the lower sounds thats what your subs are for.

Then set the nonfadind low pass filter to 80hz also. This will let only the lower sounds go to your subs. You dont want the higher frequencies going to your subs since they are handled by your front and rear speakers and if played through your subs will make a buzzy sound and make your sheet metal and interior vibrate annoyingly, not from bass but like i said a buzzy higher pitched sound.

 
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Do you have everything wired at least???

 
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ok thats a start i will check what i have it set to, at this point i think i have them all set around 100 so i am not that far off.

and yes everything is wired, it has been for a while. i am now trying to set everything properly.

 
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100 is fine also. it's just a starting point so as not to damage your speakers or get a bad vibration problem

 
Rep Power: 310

for simplicity, you can set your hp and lp frequencies on the head unit to through. Then, use the xover in the amp to set it to 80 for the subs and 80 for the fronts

 
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How do you have the Qbass set on the precision amp?

 
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Personally, I'd set it on the deck. So that it will be more easily adjusted from the driver's seat. But it all works.

 
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Easier true, but amp xovers are usually better.

 
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Jmaz, the one thing you definitely need to do is make sure your boost switch on the precision amp is NOT ON at all. That could definitely be why it sounds crappy.

 
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-- front HP/LP/FULL switch: select desired crossover setting

-- source HP/LP/FULL switch: hp/lp/full for the internal signal from the front channel to the rear channel when not using an external rear rca input

-- rear HP/LP/FULL switch: select desired crossover setting

-- Rear input INT/ext switch: select INT position if you want to use the internal signal path from the front crossover for the rear input, or the EXT position to use the external rear RCA input

-- source HP/LP/FULL switch: hp/lp/full for the internal signal from the front channel to the rear channel when not using an external rear rca input

-- rear sum/rear switch: SUM= using the rca output signnal summed from the front and rear audio channels, Rear= input off of the rear channel only for basspass capablility


What about all this stuff? anyone know what this is for and what it should be set to?

 
Rep Power: 310

front HP/LP/FULL switch: select desired crossover setting

HP--

-- source HP/LP/FULL switch: hp/lp/full for the internal signal from the front channel to the rear channel when not using an external rear rca input

Depends on whether or not you are using your amp to power rear speakers AND it depends if you've got RCAs running from both front channel and rear channel of the head unit. if you run rear speakers from this amp and you do NOT have seperate rcas from rear and front, set this to HP. if you do not run rears OR you run rears and only one set of RCAs then set it to Fullpass.--

-- rear HP/LP/FULL switch: select desired crossover setting

If you run rear speakers from the amp, set it to HP.--

-- Rear input INT/ext switch: select INT position if you want to use the internal signal path from the front crossover for the rear input, or the EXT position to use the external rear RCA input

Set this to INT if you use one RCA Cable or EXT if you have 2 RCAs from the head unit--

 
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how about these functions on the head unit:

bass:

Bass center freq. Range: 60/70/80/100 or 150 hz
bass level: -8 -- +8
Bass Q factor: 1.00/1.25/1.50/2.00
Bass Extend: on/off

mid:

middle center freq. Range: .5/1.0/1.5/2.0 khz
Middle Level: -8 -- +8
Middle Q Factor: 1.0/2.0

treble:

Treble center freq. Range: 10.0/12.5/15.0/17.5 khz
Treble level: -8 -- +8

 
Rep Power: 310

Why is there no lower bass center freq? wierd. that you're gonna have to play with alittle to get it to sound right. leave that **** for last. buy when you set it, start like this

center freq start at 60
The q-factor, set it as low as it can go to start.
Bass level, 0
extend, off

middle center, low as you can
mid level 0
middle q 1.0

treble, center low as you can
treb level 0

after you've set the crossover points, listen to it for a little bit. Ten go back and adjust all the middle freq **** and see if you like it better one way or the other. Make small changes, listen then decide. when you change a bass setting look for changes in the way the midbass sounds in your fronts. when you change a mid centing, listen for midrange to be different, when you change the treble make sure our tweets aren't too bright or dull.

I wish you could just defeat all that **** though, you may wanna call tech support and ask them if there is anyway to bypass the eq settings in your headunit.