ok so this is the setup. kenwood KDC-MP425U deck. two kenwood KAC-7203 bridgeable amps rated for 1000w max but really about 500w. two kenwood execelon 12" subs. rated at 1200w each. kenwood 6x9's. JBL 4x6's in the dash. ok so I can use one amp to power the subs correct? and the other sub for the 6x9s? and the deck for the 4x6's correct? never done a sterio before.

 

Use one of those amps to power the subs and buy a 4ch amp to power your 6x9's and 4x6's...the deck only puts out about 15watts rms max. I have almost that exact same setup in my van that sub amp puts out 175rms and that is plenty to drive those two kenwood subs. I have a kenwood KAC749s driving my mids and highs 80rms X 4.

 

ok so just use one of those amps to power the subs. buy another 4ch amp for the 4x6's and 6x9's? and just not use the other amp?

 

Thats what I would do...you could use both sub amp though and run each sub off it's own amp bridged and have more power but I doubt you will need it.

 

well this is what I was thinking. run each sub off one of those amps each.since I already have them. buy a 4ch smaller amp to fun the 6x9's and the 4x6's. are you sure I can't run the 4x6's in the dash off the headunit.?

 

are your subs svc, dvc and what is the impedance of the coils? if your 6x9's and 4x6's are 4ohm you can bridge them left and right channel off one amp using a high pass filter/crossover and only have l/r balance with no f/r fader which isn't really necessary due to speaker placement in these cars....i can't tell you how to wire the subs without knowing the impedance and single or dual voice coils due to the amp not being 2ohm stable bridged into one channel.

 

His subs are 4ohm SVC

 

Yes you can...will it get loud and sound clear...NO! If you power your 6x9's off an amp that does say 50 watts rms you wont even hear the speakers in your dash. The kac7023 is way more power than you need for 6x9's but since you already have it you can use one for the subs in 2ch and the other for the 6x9's in two 2ch and just turn the gain way down and then just buy a small 50x50 amp for the front speakers...that would leave room for play if you ever decided to do like I did in my van and add 8" midbass drivers in your sail panels.

 

here's how to use what you have....one amp for 6x9's & 4x6's wired in parallel left right stereo (you won't have f/r fader) and the other amp to the subs one on each channel of the amp. you can always change your wiring later if you so desire but that should get you the most out of what you have...and if your dash/sail panel speakers are too loud wire them in series which will give an even cleaner sound although not quite as loud. the higher ohm rating of the speaker gives you more control and a cleaner sound and won't blow your amp up even at full volume (might blow the speaker thou)

 

Thats a Ghetto install! The deck he has comes with 3 rca preouts front's, rear's and sub...so use 3 amps and the High pass and low pass filters in the deck and tune it to your taste. Honestly what I would do is sell one of those amps and buy a good 4ch amp!

 

ghetto install you say...opinions are like, well..make your own analogy if you want..that install will use everything he has without having to sell/trade/buy anything else and will not overload either amp and will sound clean...since the deck has the hipass filters built in why not run the 4x6's...they don't hold much power anyway, run the 6x9's too for that matter and one amp for each sub...sound is a matter of opinion and sometimes you just have to experiment with what you have to get it tuned to your music taste. i don't understand why you would call that a ghetto install, i didn't say use black tape and cut all the wires and don't fuse anything, i didn't suggest running everything from one amp and the dude may not want or be able to buy another amp for that matter. it's only ghetto if it looks like s**t, sounds like S**t or blows up...it's not very cool to criticise someones opinion when you are not an expert...which i'm sure you aren't.

 

When you run 4 speakers off one 2ch amp running in series or parallel thats a ghetto install.

He could run all 4 speakers from the deck and power the subs with both of his amps and that would sound ghetto...bass just a boomin and the mid and highs just a crackling if you could hear them at all.

The 4x6's will not take as much power as his 6x9's and if he powers them with a seperate amp he will have much better control with the high pass filters built into the deck.

I own this exact same deck and and he would be able to adjust the frequency range seperate in the 6x9's to say anything above 100hz and he could adjust the 4x6's to 250hz and above and set the subs to play everything below 100hz.

I dont think you have the filters if you just power it from the amp built in the deck.

4x6's sound like a$$ if you try to play 100hz through them so I have mine set at 250 and above...now if the same amp was powering the 6x9's they also would be at 250hz and I found that the subs play best if the filter is set to play 100hz and below. Well with your hookup you now are missing out on the frequency range from 100hz to 250hz in order for the other speakers to sound their best...wonder how that will sound? Oh I know, all the bass would be there as well as any higher frequency sound but if you actually listen to anything other than rap the voices would be way off in the distance and you would probably barely be able to hear them.

I am not a professional installer but I have been to a few of these rodeos before so I have a clue or two maybe even three as to what I am talking about.

Now if he wanted a real good sounding system he would not even use 6x9's or 4x6's because they just dont sound good to begin with...instead he would install some component speakers in the front with no high frequency speakers in the back to create a sound stage. Then install some midbass drivers in the sail panels to make up the frequency difference between the subs and components.

Sound quality is 50% equipment and 50% install...I have heard $500 systems that sounded way better than some peoples $3000 systems...they spend $1000 on a deck another $1800 on amps and subs and $200 on a pair of 6x9's that they dont even mount they just prop them up in their back window...WTF is up with that?

Oh this is my favorite right here and I have seen it and heard it. Some guy in my town has two "15 subs in his hatchback powered by an orion 2400 watt amp or something like that and he has some crappy sony $50 deck and he uses the deck to power all his factory speakers...the sound is just fantastic

 

 

You know...i agree with everything you said in the above post, but he could still use the setup i recommended and it would sound good, not great, not perfect but good especially if he bought some caps from radio shack and added to the 4x6's...i too have been to the "rodeo" as well as installed no less than 15 full systems starting way back before people put subs in their trunk...but i think you missed the point i was trying to make...if you have to use what you have and can't afford anything more...then use what you have to the fullest