Factory Amp ?

ALERO81 · 07-02-2008, 11:08 PM

Hello everyone

this is a great site I have one question for the time being anyway I have installed my own cd player, amp, and subs which I have been doing myself in all of my cars this cd player works great same with the subs the only prob I having is some days it seems like the cd player sounds great and by great I mean loud and then there is other days where it not loud a all before you answer there a few things you should know
1) yes I do Have a good cap
2) same song
3) same volume
3) the amp setting never change

Please help as soon as you can !

fraser89 · 07-03-2008, 12:01 AM

I only have limited experience in audio equipment but it sounds like there might be a problem with wiring. Either loose connections to the head unit or possible a loose ground?

kniedelm9490 · 07-03-2008, 08:31 AM

its gotta be the wiriing did you soder the connections to the head unit? or like do any thing besides just tape them?

Ryan from Ohio · 07-03-2008, 12:16 PM

And the factory amp powers what?

And the aftermarket amp powers what?

Not enough info.

natedawg9640 · 07-03-2008, 12:21 PM

your fingers aren't in yours ears by chance are they?

kniedelm9490 · 07-03-2008, 06:51 PM

so you have the factory amp? .. did u pull back the carpet and check the connections there?... u gotta be more detailed man

lonnie · 07-04-2008, 10:51 AM

Where do you get the signal to the aftermarket amp? Are you taking it from the rear speakers? What sound is or isn't sounding loud the aftermarket amp sub, or the factory amp speakers?

ALERO81 · 07-12-2008, 10:07 PM

Sorry everyone I was trying to find my post but it would not show up in the USERCP just ran into it today so again sorry

ALERO81 · 07-12-2008, 10:09 PM

Quote:

Originally Posted by kniedelm9490

its gotta be the wiriing did you soder the connections to the head unit? or like do any thing besides just tape them?

yes the wires both saudered and shrink wrapped there on there the right way

ALERO81 · 07-12-2008, 10:12 PM

ok sorry about all the post Im going to try to respond this was now starting with RYAN
the factory amp is only running the the door speakers
NATEDAWG9640 sorry I could not find my post ...I was looking for it
LONNIE.. not too sure I understand you question my one amp is running the back 6x9
and the other amp is running the subs. the system sounds great sometimes but other days sounds low like the volume is turned down when is is not ??... and this is comming from all the speakers

PLEASE THE FIRST PERSON TO REPLY TELL ME THE BEST WAY TO FIND THIS POST IF ITS NOT UNDER USERCP THEN WHERE WOULD I FIND IT??

Midgear · 07-12-2008, 10:46 PM

Quote:

Originally Posted by ALERO81

PLEASE THE FIRST PERSON TO REPLY TELL ME THE BEST WAY TO FIND THIS POST IF ITS NOT UNDER USERCP THEN WHERE WOULD I FIND IT??

type "Factory Amp ?" in the search bar? lol

since its a recent thread.. just go to the place you posted it in, you dont have to go through the user CP. the thread should be twards the top of the list.

or just copy and paste this link every time you want to view it- http://www.aleromod.com/forums/showt...d=1#post370955

ALERO81 · 07-12-2008, 11:17 PM

Thanks Midgear
I have found a way to find my post by doing what you said but also by clicking my own name the finding all my posts

deathwish666 · 07-13-2008, 12:45 AM

this happened to me with my subs, im not sure if its the same but i got new RCA's and they work perfect now

do you have a pre-amp in one of your amps that you hook the other one to? if so you could try and unplug one RCA wire in the first amp and see if theres a difference

give us more info on how everything is wired together

ALERO81 · 07-13-2008, 04:31 PM

trying to give all the info I can my deck has 3 outputs one set for the subs one for the back and last set for the fronts every amp has there own rca plug running to the deck

Ryan from Ohio · 07-14-2008, 01:02 PM

Ok ok ok... This thread has to much jibberish.

RCAs run out from your Deck to an aftermarket amp. Aftermarket amps sometimes have an RCA out on them for signal pass through...

I going to guess most of us are confused as to exactly what you have and what you want to do.

lonnie · 07-14-2008, 02:41 PM

Quote:

Originally Posted by ALERO81

ok sorry about all the post Im going to try to respond this was now starting with RYAN
the factory amp is only running the the door speakers
NATEDAWG9640 sorry I could not find my post ...I was looking for it
LONNIE.. not too sure I understand you question my one amp is running the back 6x9
and the other amp is running the subs. the system sounds great sometimes but other days sounds low like the volume is turned down when is is not ??... and this is comming from all the speakers

PLEASE THE FIRST PERSON TO REPLY TELL ME THE BEST WAY TO FIND THIS POST IF ITS NOT UNDER USERCP THEN WHERE WOULD I FIND IT??

Ok let me explain a little better cause as Ryan said I there is a lot of uncertainty in this thread...No one can help you if we don't totally understand what is going on. How many amps do you hav?..I assume only two one for the rear 6x9's and one for the sub...Next when you say that sometimes the speakers are loud and sometimes they are not, are you talking about only the Speakers or the Speakers and Subs?. When you say that you have Three RCA outputs, are these preamp outputs? What model of deck do you have? Are the front speakers amplified? Please answer these questions and it will make life and possible troubleshooting with you a lot easier. The more information you can give on your system and individual components the easier it will be. Lets review!!
1. What deck are you using?
2. How many amps do you have?
3. Are the fronts amplifed?
4. Are the Rears amplifed?
5. Do you have a sub, and does it have its own amplifier?
6. Are you having this problem with just the speakers or are you having this problem with all the speakers and the sub as well?
7. Is the only problem that the speakers are loud sometimes and sometimes they are not?
8. Are the outputs on the deck preamp outputs?
9.What year is your car?
10. Are you using a harness for this install?

Anyone else have any questions please add, but hopefully this will help us help you. I know some of these you have answered already but if you could respond to each question then maybe we can get some order in this thread instead of broken information every now and then.

ALERO81 · 07-14-2008, 03:25 PM

OK first off thanks for everyone who is TRYING to help me
and sorry about all the uncertainty me I am a hands on type of person. For me is hard to decribe the prob the way it should be. That being said I will answer Lonnie question

1) the deck that I have is a 2007 kenwood I think the model number is kdc-740 ? it plays usb and cd's
2)I have 2 amps one is on the subs and the other is one the back 6x9's also have a power cap
3)no the front speakers are not on a amp
4)yes rear speaker are on a amp
5) subs have there own amp
6) problem is with all speakers !
7)yes this is the ONLY Problem that I'am having
8)no there not pre amp outputs ..... as far as I know anyway
9) I have a 1999 olds alero
10) yes I did buy a harness for my radio

AGAIN THANK YOU FOR ALL YOU HELP

lonnie · 07-14-2008, 03:52 PM

Thanks for answering, ok one thing I noticed is that the model you have is probably a KDC-MP735U or the KDC-X792 I couldn't find a 740 anything, not saying you are wrong but I couldn't find it anywhere online. And all of the RCA's you have coming out of there are 4volt preamp outputs with one set for the front, one for the rear, and one for the subs. This headunit has a ton of features if it is in the same family as the ones I listed above. If you know it is a good unit then I would guess that the problem lies in the settings...It seems that you can adjust the output level of each set of preamp outs so there could be a difference in the amount of voltage you are allowing to each set of outputs. This of course is just a rough guest...If the speakers are the only problem then I would look at the settings for each set of outputs and match them, also check to make sure you have the right speakers run to the correct outputs. Its hard to say man cause it could be so many things. Right off the bat you have unamplified fronts, and amplified rears so its logical to assume that there will be a big difference in volume between the two. I would play with the gains a bit more, and check those output settings as well. The only common link between the front speakers and the rear speakers is the head unit, and you did say the problem is present in the front and rear.

ALERO81 · 07-14-2008, 11:07 PM

WOW thanks lonnie you have put a lot of time into to helping me so thanks
you are right after looking at the cd player the model is a kdc 735u not the kdc 740 and there is a ton of features way to many for anyone I did try playing with the output setting but did not find anything that list the different out put such as rear front and subs ?? I will try and mess around with it a little more tomorrow and get back to you
thanks again

lonnie · 07-15-2008, 07:29 AM

Quote:

Originally Posted by ALERO81

WOW thanks lonnie you have put a lot of time into to helping me so thanks
you are right after looking at the cd player the model is a kdc 735u not the kdc 740 and there is a ton of features way to many for anyone I did try playing with the output setting but did not find anything that list the different out put such as rear front and subs ?? I will try and mess around with it a little more tomorrow and get back to you
thanks again

Cool! Thats a nice unit at least from what I read on it. Hope everything works out. That family of Head units are filled with features.