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Old 07-23-2011, 10:20 AM   #1
Subaru_WRX
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Default Subwoofer & Navi

Is it possible to connect a subwoofer & amp to the stock Navi in an 08 WRX? Mine didn't come with a subwoofer from the factory, or the previous owner removed it
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Old 07-23-2011, 07:45 PM   #2
SVXdc
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Yes!

The 2008-2011 OEM Kenwood Navi HUs have a 24-pin harness for nav-related functions and A/V inputs and outputs. The HU's socket includes pins for a line-level subwoofer output that is only used in some Foresters.

See OEM Navi HU information I've posted here (in my 'Subaru Stock HU FAQ' thread, second half of post #11).

Rear of your 24-pin plug:
This line-level subwoofer output is controlled by the on-screen menus:
Note that these settings do not apply to the OEM under-seat accessory subwoofer or the OEM Kicker subs -- those types have harnesses that tap off of the HU's front main speaker outputs.

I can make a cable with a female RCA jack (along with a separate pin/wire for amp remote turn-on) with pins that you can snap into your car's harness. E-mail me for details (see my profile).
The Navi's subwoofer output is mono. To connect to an amp or powered sub that requires signals on dual inputs, I recommend running a single RCA cable from the HU to your amp, and add an RCA Y adapter at the amp (such as this or this).

Last edited by SVXdc; 12-18-2012 at 07:36 PM.
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Old 07-24-2011, 10:02 AM   #3
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I sent you a email. I would love to have one of those cables.
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Old 07-24-2011, 05:32 PM   #4
whteWRX
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I can make a cable with an RCA jack (along with a separate pin/wire for amp remote turn-on) that you can snap into your car's harness. E-mail me for details (see my profile).[/quote]

Sent you an email.

Thanks.
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Old 07-25-2011, 06:09 PM   #5
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can you do anything like this for a 02?
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Old 07-27-2011, 12:27 AM   #6
SVXdc
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Non-nav factory radios and older years don't have a line-level subwoofer output. A few older radios do have a 5th-channel subwoofer speaker-level (high-level) output. You can tap a pair of the main speaker outputs or the sub out (if you have it) and pipe that into an an aftermarket amp and sub.

I have Subaru radio harnesses that have wires on all of the pins. You can use those to tap the OEM HU's speaker outputs without cutting or splicing into the factory wires. I can also make a harness with the plug for the 5th-channel sub out for OEM radios that have that.
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Old 07-27-2011, 12:45 PM   #7
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SVXdc: I have a similar situation, but with 2 amps and am wondering if it would make sense for me to get that adapter you make (just for sub amp) or just push everything to an LC6i and then my amps from there. I do like the idea of using the HU's sub control.
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Old 07-27-2011, 01:01 PM   #8
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So can i just install a amp/sub with the stock navi like a normal install? or is there splicing and custom things that need to be done?

I guess i am asking, to use the factory navi with a aftermarket sub/amp, can i run the power wires, remote line and such (which is easy) like normal and do a plug and play install?
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Old 07-27-2011, 01:06 PM   #9
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^You need a way to get your audio into the amp. This requires either a line-out converter (speaker wire input --> RCA output to amp) or an amp that takes speaker wire inputs (basically has the line-out converter built in).

Factory navi does not have RCA outputs on the back.
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Old 07-27-2011, 02:00 PM   #10
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SVXdc made me an RCA jack that worked perfectly on my 08 2.5i w/ Navi. Just did this last week, PM me if you have any questions.
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Old 07-27-2011, 03:18 PM   #11
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So, what is the easiest "best" way to get the audio source to the amp on my 2011 with navi?

Last edited by darren94; 07-27-2011 at 03:28 PM.
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Old 07-27-2011, 05:30 PM   #12
SVXdc
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Quote:
Originally Posted by 2point0 View Post
SVXdc: I have a similar situation, but with 2 amps and am wondering if it would make sense for me to get that adapter you make (just for sub amp) or just push everything to an LC6i and then my amps from there. I do like the idea of using the HU's sub control.
I don't think you can use the Navi's line-level subwoofer signal as an input to the LC6i (because it appears to only accept speaker-level [high-level] signals as input), so there may not be any benefit to using my adapter with the LC6i. But you should talk to AudioControl to confirm.

Note that the Navi's sub settings are a couple of menu levels deep, so if you're a person who will want to constantly tweak the sub levels for different songs, you may be better off adding the LC6i's optional sub level pod (or switching to an aftermarket HU that lets you adjust the sub level from the front panel).

You could always start with my adapter without the LC6i, and add the processor later if you don't like how it sounds initially.


Quote:
Originally Posted by darren94 View Post
So can i just install a amp/sub with the stock navi like a normal install? or is there splicing and custom things that need to be done?

I guess i am asking, to use the factory navi with a aftermarket sub/amp, can i run the power wires, remote line and such (which is easy) like normal and do a plug and play install?
Once you add the sub RCA cable (see picture I added to my first post), your Navi will have an RCA jack and remote turn-on lead, so it really would be just like adding a sub to an aftermarket HU.

Now if you're looking at amping your main speakers, the Navi does not have line outs for those. You would have to pipe the HU's speaker outputs into your speaker amp (through a LOC, if necessary). I also have harnesses that make that job easier (so you won't have to hack any factory speaker wires).

And if you really want to go gung ho, the Navi also has a line-level center channel speaker output. See the link in my first post for more info.

Last edited by SVXdc; 07-28-2011 at 04:01 PM.
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Old 05-05-2012, 04:34 PM   #13
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I will definitely be emailing you about getting those cables!
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Old 07-21-2012, 05:22 AM   #14
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Quote:
Originally Posted by SVXdc View Post
Yes!
Note that these settings do not apply to the OEM under-seat accessory subwoofer or the OEM Kicker subs -- those types have harnesses that tap off of the HU's front main speaker outputs.
I didn't know that, luckily I haven't purchased the the OEM sub yet. I was wondering that if that's the case how do I adjust the sub volume? Or can I request the dealer electrician to install it as the way you describe (connect the OEM sub to the 24 pin to the back of the HU)?

Thanks
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Old 08-04-2012, 07:38 PM   #15
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Quote:
Originally Posted by suny05 View Post
I was wondering ... how do I adjust the sub volume [on the OEM Kicker sub]?
You can't. See discussion here.

Quote:
Or can I request the dealer electrician to install it as the way you describe (connect the OEM sub to the 24 pin to the back of the HU)?
A dealer won't do that. In order to drive the OEM Kicker sub from a line-level (low level) signal, you will likely need to modify the Kicker's amp. I'm not how much effort that would require (or if it would be worthwhile). Probably better to just go with an aftermarket sub.
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Old 12-18-2012, 10:13 PM   #16
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how much will it cost me to get this sub woofer mod from you?
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Old 12-18-2012, 10:31 PM   #17
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Since you can't adjust the sub volume with the 08-11 nav I suggest a powered sub with a remote gain control. Unless you want huge bass, the B-8pt I just got provides more than enough low end and it includes a remote level cable and dial.

It would also be quite cost effective at $150
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Old 12-18-2012, 10:35 PM   #18
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completely off topic. but i find nothing more annoying that the word "navi" some chick on a toyota comercial says it and it makes me want to punch her in the throat.
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Old 12-18-2012, 11:05 PM   #19
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Quote:
Originally Posted by mrchyes View Post
completely off topic. but i find nothing more annoying that the word "navi" some chick on a toyota comercial says it and it makes me want to punch her in the throat.
Doesn't bother me. Whenever I read it I'm reminded it this

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Old 12-22-2012, 09:22 AM   #20
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Best source of info I've found so far : ) Thanks!
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Old 04-22-2013, 06:27 AM   #21
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Hi SVXdc, I would love if you could help me out with one of these cables for the sub output. I have been looking around on a lot of forums, trying to find someone local making these, it would be greatly appreciated if you could get back to me.
Cheers.
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Old 04-22-2013, 11:13 AM   #22
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Quote:
Originally Posted by Mephiska View Post
Doesn't bother me. Whenever I read it I'm reminded it this

This looks exactly like a 20th Anniversary Macintosh with a paint job.

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Old 05-27-2013, 05:07 PM   #23
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Default 2011 WRX Navigation HU aftermarket sub woofer noise

Hey all,

I am having an issue with my sub having loud distortion noise that I have tracked back to being possible ground related. When I tighten up the mounting screws that hold the HU to the dash frame it gets feedback in the subwoofer. I have tried different amp remote sources with their own grounds. If everything is sitting still it works as it should. It distorts regardless of volume level.

I used the following setup

pin 11 - RCA jack ground

pin 12 - RCA jack center lead

pin 23 - Amp remote turn-on wire

pin 24 - RCA jack ground

I still think it is a ground related issue but I can track it down to a solution.
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Old 09-15-2013, 02:15 AM   #24
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does anyone know the part number of the 24 pin connector or the pins?
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Old 11-13-2013, 05:07 PM   #25
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Quote:
Originally Posted by SVXdc;34681510

I can make a cable with a female RCA jack (along with a separate pin/wire for amp remote turn-on) with pins that you can snap into your car's harness. E-mail me for details (see my profile).[indent
[/indent]
The Navi's subwoofer output is mono. To connect to an amp or powered sub that requires signals on dual inputs, I recommend running a single RCA cable from the HU to your amp, and add an RCA Y adapter at the amp (such as this or this).
I really need one of these subwoofer rca pigtails. Sent you an email but havent heard back yet. Anyone know where else i can find one or even just the pins?---edit got your response thanks!

Last edited by drumminguy81; 11-14-2013 at 05:25 AM.
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