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Sub sounds like crap after PAC install

frdfandc

By frdfandc
in Audio, Electronics & Software

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frdfandc Enthusiast

frdfandc

Posted
Posted

I installed PAC AOEM-GM24 adapter in my bose equipped 03 Rado. I hooked up the RCA cables to both jacks on the adapter and it the sub sounds like its in mud.

 

Setup is all factory bose with a Sony Xplode 760W amp and a 12" Pioneer IMPP 450w sub (I actually have 2 of these, but I think one is enough)

 

Which RCA jack do I use, the front or the rear, and second off, how do I adjust the PAC adapter & amp to make it sound ok.

lerbud Enthusiast

lerbud

Posted
Posted

the pac adapter has some little screw adjustments on it. i hook my rca's up to the rear. the pac is usually adjusted at 1/2 way so if you crank it up it should sound better. what kind of box are you using?? if you are using a downfire it should sound great.

frdfandc Enthusiast

frdfandc

Posted
  • Author
Posted

I have a upfiring box. But its too small. The box used to be a nice size 2 12 inch sub enclosure, but I made it to fit one sub under the seat. But I'm gonna get a new box, probably tomorrow.

Wingnut Senior Enthusiast

Wingnut

Posted
Posted

I was having the same issues with my Bose/Nav stereo and PAC adapter. Still am to some degree. I was using a bigass Fosgate amp pushing a couple of Kicker 10's. I've replaced the Fosgate with an Audio Planet amp that has more options/controls, and after toying with it for a while, my sound has vastly improved.

 

I still blame the crappy Bose stereo though. I hate them...I want to stab those people in the face with a rabid chihuahua.

frdfandc Enthusiast

frdfandc

Posted
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Posted

Well, got it hooked up and working properly. Doesn't sound too bad. I just need to get a bigger sub box for my 12". Then it should hit pretty good.

frdfandc Enthusiast

frdfandc

Posted
  • Author
Posted

Yeah, I installed it behind the HU, but now when the bass hits hard, the amp goes into overload. Still need to fart around with the settings. Maybe tomorrow.

Mertz Enthusiast

Mertz

Posted
Posted

What makes it sound different in the dash? I currently have mine in the console. Could you clarify a little more? Very curious about this. Thanks! :cry:

Mertz Enthusiast

Mertz

Posted
Posted
Make sure you install that adapter behind the factory head unit and not in the console! It sounds alot different behind the HU.  :D

 

 

 

 

So what exactly makes it sound better behind the head unit? I've got mine in the console now. Very interested in your input! Thanks :D

ranger302j Enthusiast

ranger302j

Posted
Posted
if you have a factory sub you should get it at the powered outputs that go to your sub. they are better signal.

 

 

 

Yes I did just that. I am running a 600W JBL 1 ch amp and am using spkr-level inputs because this amp will automatically turn on/off from this signal...I didnt have to run a remote wire. After first tapping into the blose front door speaker wiring (subs sounded crappy) and then the rear speakers (even worse) I realized that there must be a crossover or high-pass filter on all the door speakers. I tapped into the factory sub wires and voila, I got decent bass. I am still wondering if there is a certain frequency cutoff (low frequency) to the factory sub and if using the PAC adapter with RCAs would sound any better, bass wise. Has anybody else hooked theirs up to the factory sub wires coming off the bose amp? :)

arrivalanche Enthusiast

arrivalanche

Posted
Posted
if you have a factory sub you should get it at the powered outputs that go to your sub. they are better signal.

 

 

 

Yes I did just that. I am running a 600W JBL 1 ch amp and am using spkr-level inputs because this amp will automatically turn on/off from this signal...I didnt have to run a remote wire. After first tapping into the blose front door speaker wiring (subs sounded crappy) and then the rear speakers (even worse) I realized that there must be a crossover or high-pass filter on all the door speakers. I tapped into the factory sub wires and voila, I got decent bass. I am still wondering if there is a certain frequency cutoff (low frequency) to the factory sub and if using the PAC adapter with RCAs would sound any better, bass wise. Has anybody else hooked theirs up to the factory sub wires coming off the bose amp? :)

 

 

 

 

so i take it your amp has high power in??? if not, yea, use a Pac LOC. most of the time you will get a better signal.

ranger302j Enthusiast

ranger302j

Posted
Posted
if you have a factory sub you should get it at the powered outputs that go to your sub. they are better signal.

 

 

 

Yes I did just that. I am running a 600W JBL 1 ch amp and am using spkr-level inputs because this amp will automatically turn on/off from this signal...I didnt have to run a remote wire. After first tapping into the blose front door speaker wiring (subs sounded crappy) and then the rear speakers (even worse) I realized that there must be a crossover or high-pass filter on all the door speakers. I tapped into the factory sub wires and voila, I got decent bass. I am still wondering if there is a certain frequency cutoff (low frequency) to the factory sub and if using the PAC adapter with RCAs would sound any better, bass wise. Has anybody else hooked theirs up to the factory sub wires coming off the bose amp? :)

 

 

 

 

so i take it your amp has high power in??? if not, yea, use a Pac LOC. most of the time you will get a better signal.

 

 

 

 

Well it is coming from the factory subwoofer amplifier, my JBL amp level is only up about halfway I believe, but my stereo bass setting is normally almost all the way down to keep the factory speakers from distorting so I suppose that this amp can take in a signal like that. I was just asking because I know the factory sub is small and I didnt know if they cut off a certain low frequency and below so it wouldnt damage the little factory sub. My bass seems to not be as loud on the low low notes, so it would either be this or the box maybe isnt the best shape and size for the subs.

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