Forscan EQ

[S550HPP]

Note that some amps will equalize high level signals like My Audison AP8.9 and Kenwood XR1001.1 that I just connected to Bronco B&O sub high level works great no more bass roll off.

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[Mike Pfeifer]

If this Forscan tweak — “Stereo - Flat Line Out (enables flat/low output so you can hook up amps or disconnect subs)
ACM 727-01-01 xx5A xxxx xxxx
727-01-02 00xx” — really works as described, does it basically give all the speakers equal power so the rears stop doing that awkward “roll-over-and-die” thing? And what about the sub? Does everything end up getting a full-range signal or does it allow all channels to get equal power?


I’m asking because I’m getting close to doing a full system in my ’19 350R. I’d like to start by adding a rear component set — and if the factory amp can push it — I might even ditch those speakers and drop in a 6.5" mid-bass I have. But if the rest of the channels are suddenly going to be fed frequencies they were never meant to see (like asking your tweeters to hit leg day), then I’ll just wait until I install the full setup.


I can’t shake the feeling that if the OEM DSP wasn’t strangling half the channels, and I threw in a solid 3-way front stage with a 2-way in the rear — or maybe a sensitive mid-bass on the rear deck paired with the OEM-box and DD audio sub I am running — it might actually be… acceptable.
Not great. Not amazing. Just “yeah, I can live with this” acceptable.

I don’t remember where on here that I saw it, or who exactly said it, but someone claimed to have actually measured the frequency response of the various output channels on what I think was the 9ch system. This individual claimed that even after the Forscan EQ change that the rear speakers still had some sort of high pass filter. Also same for front mid range / tweeters (these are run in parallel on the same output channel). He claimed that the only true full range signal after the Forscan EQ change was the lower door woofers. I have searched and have been unable to find the thread this is discussed in. It was not recent. Apparently my search skills are lacking.

 

[TreeFiddyAre]

I don’t remember where on here that I saw it, or who exactly said it, but someone claimed to have actually measured the frequency response of the various output channels on what I think was the 9ch system. This individual claimed that even after the Forscan EQ change that the rear speakers still had some sort of high pass filter. Also same for front mid range / tweeters (these are run in parallel on the same output channel). He claimed that the only true full range signal after the Forscan EQ change was the lower door woofers. I have searched and have been unable to find the thread this is discussed in. It was not recent. Apparently my search skills are lacking.

Thanks for the response… I’m just gonna redo the whole thing. It would’ve been nice to cut my teeth with FORScan on this and magically unlock some proper mid-bass from the rear deck, but nope — life said, “Go big or go home,” so here we are.


Before I tear into it, I gotta figure out what the heck is happening with the front channels. Are the mids and tweets running off the same channel in the B&O system, or did Ford just let a blind squirrel wire this thing?


I just grabbed a 5-channel amp to run everything anyway. I’ve officially entered the “mad scientist” phase: 3-way fronts, 2-way rears, 6.5" mid-bass, six different woofers, and three boxes to play with. Once the build starts I'll post pics

 

[Mike Pfeifer]

Before I tear into it, I gotta figure out what the heck is happening with the front channels. Are the mids and tweets running off the same channel in the B&O system, or did Ford just let a blind squirrel wire this thing?

The front 3.5 or whatever they are are wired in parallel with the tweeters in the A pillar. The Woofers in the lower door are a separate channel. There is a post in the infotainment section that has schematics.

 

[Mike Pfeifer]

The first post in this thread is a good place to start to understand how the systems are wired. Here you go.

 

[TreeFiddyAre]

The front 3.5 or whatever they are are wired in parallel with the tweeters in the A pillar. The Woofers in the lower door are a separate channel. There is a post in the infotainment section that has schematics.

got it . Thank you for clarifying

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