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Subwoofer add - better to NOT use FORscan?

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Old 05-15-2018, 05:58 PM
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Originally Posted by caperj
I have an 18 302a and the wiring is there.
The Lariat HDPP comes with 500a only. That's 7 speaker, Sirius, base radio. I assumed the plug would be there, but it's not. I can see very well in the area and it's not there. Really not that big a deal now that I've pulled power from the battery.. I just need to find a power on lead and tap the front speaker wires on one side. Just more work than I'd hoped.
Old 05-15-2018, 08:11 PM
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I suggest using an add-a-circuit or add-a-fuse with the fuse location for the stereo. That way the sub will be on any time the stereo is on.

I’d also suggest tapping the speaker wires behind the stereo and get both left and right channels. 1. Only tapping one side,left per your posts, will mean if lower tones are mostly or only in the right channel, there will be nothing from the subwoofer which will sound odd, 2. If you decide to upgrade other parts of the system later, the source is already done, 3. It should be easier to find the speaker wires behind the stereo vs other areas, 4. there’s usually plenty of room in the dash for the LOC.
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Old 05-15-2018, 08:23 PM
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Originally Posted by chadfo
I suggest using an add-a-circuit or add-a-fuse with the fuse location for the stereo. That way the sub will be on any time the stereo is on.

I’d also suggest tapping the speaker wires behind the stereo and get both left and right channels. 1. Only tapping one side,left per your posts, will mean if lower tones are mostly or only in the right channel, there will be nothing from the subwoofer which will sound odd, 2. If you decide to upgrade other parts of the system later, the source is already done, 3. It should be easier to find the speaker wires behind the stereo vs other areas, 4. there’s usually plenty of room in the dash for the LOC.
Do you happen to know what wires are for the front door speakers? I would love a wiring diagram ...
Old 05-15-2018, 08:53 PM
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Originally Posted by soSincerious
Do you happen to know what wires are for the front door speakers? I would love a wiring diagram ...
Sorry, no.
Old 05-15-2018, 09:43 PM
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Originally Posted by soSincerious
Do you happen to know what wires are for the front door speakers? I would love a wiring diagram ...
FL + is White
FL - is White/brown

FR + is White/Purple
FR - is White/Orange

There are white plugs in each kick panel that have the speaker wires in them. That's where I plan to tap in once I get some good t taps. I've decided to not use passive bassblockers unless I need to.
Old 05-15-2018, 11:58 PM
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is there a picture of what wires to tap in the harness behind the pillar for sub i just keep hearing people talk about it.
Old 05-16-2018, 04:01 AM
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Originally Posted by mhamershock
If I use a bassblocker, would it be better to feed the sub from the rears? The fronts are Polk 6x9s and actually do a decent job of producing bass while the rears are just 6.5s. Or do I want to cancel below 150 to all door speakers and just let the sub do the lows?

M
Highpass the doors at 150 hz and lowpass the sub at 100 hz might be ok, depends on the availability of what rating bassblockers, I guess. I like 125 and 80 but IDK what the ratings choices are.
Old 05-16-2018, 04:03 AM
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Originally Posted by mhamershock
If I use a bassblocker, would it be better to feed the sub from the rears? The fronts are Polk 6x9s and actually do a decent job of producing bass while the rears are just 6.5s. Or do I want to cancel below 150 to all door speakers and just let the sub do the lows?

M
Forgot to add - The rear signal isn't gonna contain the low bass you want for the sub. The rears signal is bandpassed. Front woofers are lowpassed and tweeters are highpassed, of course.
Old 05-16-2018, 04:08 AM
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What chadfo said. Always sum the stereo channels into 1 mono.
Old 05-16-2018, 05:07 AM
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id say use the signal from the 1212. I'm using it and its a good clean low going to it. I also am using the kicker that was for the 09-14 scab and a 200w rms Kenwood amp to drive it all from that connector


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