Anyone used FORScan for flat signal to DSP?
08-09-2018, 08:51 AM
#91
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Originally Posted by slojas, post: 151849, member: 4633
This worked on my 2017 F150 and 2017 Mustang
Variable Line Level Preamp Outputs From ACM (for adding aftermarket amp without sound clipping)
ACM 727-01-01 xx5A xxxx xxxx
ACM 727-01-02 00xx
APIM 7D0-01-01 2xxx xxxx xxxx <--- this change required only if you have Sony DSP
Variable Line Level Preamp Outputs From ACM (for adding aftermarket amp without sound clipping)
ACM 727-01-01 xx5A xxxx xxxx
ACM 727-01-02 00xx
APIM 7D0-01-01 2xxx xxxx xxxx <--- this change required only if you have Sony DSP
Kirk
10-12-2018, 04:54 PM
#92
That's what I'm thinking as well. A guy on DIYMA was able to post up some measurements from his Ford Escape ACM and I came to mostly the same conclusion. The high end roll off starts at 15K which most people won't be able to hear anyway. The low end though runs up to 100 Hz which could be kinda problematic. It actually doesn't roll off the bass. It attenuates everything from 100 Hz and up by like 30 db at the lowest volume and then as you raise the volume, everything else comes up while 20-100 Hz stays the same so when you're at near max volume, the mids and highs have caught up with the 20-100 Hz range.
80-100 Hz is getting into the boomy part of the sub bass and can be an area that you don't want accented. Every car I've ever tuned, 80 Hz is where I start cutting. I plan on getting back into MECA SQ competitions with this system so that would be a problem for me. All those stand up bass tracks on the judging disc, that 80-100 Hz range would boom like crazy. But that's what the JL Audio Fix should hopefully cure. I figure mounting the remote volume control just behind the gear shifter would be the best place. My arm is resting on the center console 90% of the time and my fingers are dangling right there anyway so it would be just as convenient, actually a little more so than using the steering wheel controls. The only thing I really use them for anyways is the Mute function which would still work.
80-100 Hz is getting into the boomy part of the sub bass and can be an area that you don't want accented. Every car I've ever tuned, 80 Hz is where I start cutting. I plan on getting back into MECA SQ competitions with this system so that would be a problem for me. All those stand up bass tracks on the judging disc, that 80-100 Hz range would boom like crazy. But that's what the JL Audio Fix should hopefully cure. I figure mounting the remote volume control just behind the gear shifter would be the best place. My arm is resting on the center console 90% of the time and my fingers are dangling right there anyway so it would be just as convenient, actually a little more so than using the steering wheel controls. The only thing I really use them for anyways is the Mute function which would still work.
10-12-2018, 05:26 PM
#93
Sounds like you changed the Outputs to low level. To flatten the EQ only, you just have to change one number to a "0" in the ACM. I'm trying to find my post on which one that you need to change.
Found it.
With forscan also flatten the EQ output from the factory radio and make everything sound better to start with.
FORSCan codes:
ACM
727-01-01 xx5A xxxx xxxx This one makes the factory outputs a low level for an aftermarket amp.
727-01-02 00xx This one flattens the factory EQ.
Found it.
With forscan also flatten the EQ output from the factory radio and make everything sound better to start with.
FORSCan codes:
ACM
727-01-01 xx5A xxxx xxxx This one makes the factory outputs a low level for an aftermarket amp.
727-01-02 00xx This one flattens the factory EQ.
Does it have to be combined with the other code? I'm powering stock speakers through the head unit still. Just want to get rid of the EQ before committing to a second amp or a new 5 channel. Volume wise for me it's loud enough, but I hate the roll off of the lower frequencies. What's weird is, I just played some old DJ Laz bass track and it sounded like the EQ was gone, but that can't be.
Last edited by it8ezbngrn; 10-12-2018 at 05:52 PM.
10-12-2018, 07:13 PM
#94
Originally Posted by it8ezbngrn
I tried the flatten EQ mod ONLY and it did not work. Still had a difference in bass to highs. What I did notice is the chimes went from the speakers to a module behind the cluster. Took a few key cycles to get it back to the speakers after resetting. Then it would not recognize my USB flash drive, kept repeating it even after I removed it. Panic set in. Reloaded the ACM orig again. SNAFU still have the EQ
Does it have to be combined with the other code? I'm powering stock speakers through the head unit still. Just want to get rid of the EQ before committing to a second amp or a new 5 channel. Volume wise for me it's loud enough, but I hate the roll off of the lower frequencies. What's weird is, I just played some old DJ Laz bass track and it sounded like the EQ was gone, but that can't be.
Does it have to be combined with the other code? I'm powering stock speakers through the head unit still. Just want to get rid of the EQ before committing to a second amp or a new 5 channel. Volume wise for me it's loud enough, but I hate the roll off of the lower frequencies. What's weird is, I just played some old DJ Laz bass track and it sounded like the EQ was gone, but that can't be.
10-12-2018, 08:17 PM
#95
I have a sub. Jl Audio 8. I am off the rear channels of the deck. There is definately a brick wall in lower frequency volume at 20 or so on the Sync 3.
Watch this video starting at 19 minutes. They are using a RTA on the rear channels and front channels. They see it.
Watch this video starting at 19 minutes. They are using a RTA on the rear channels and front channels. They see it.
10-12-2018, 08:33 PM
#96
Originally Posted by it8ezbngrn
I have a sub. Jl Audio 8. I am off the rear channels of the deck. There is definately a brick wall in lower frequency volume at 20 or so on the Sync 3.
Watch this video starting at 19 minutes. They are using a RTA on the rear channels and front channels. They see it.
Watch this video starting at 19 minutes. They are using a RTA on the rear channels and front channels. They see it.
10-12-2018, 10:18 PM
#97
I’m pretty sure it is not. I’ve never seen this before and the fronts are not distorted and th sub planes out. I can the turn up the sub to match and when I turn it back down, the sub is way up.
So it looks like it starts at about 15 on the radio. After that the bass planes out and the mids and highs overtake the bass. The pots on the LOC are 3/4 up. The gain on the amp is 3/4 up and the remote gain is at 1/2. I had this system in two other cars, both with fact amplified systems and didn't have this issue. When I turn the radio up then turn the remote gain **** up I ac get to equal out but when I turn the radio back down its disproportionate. The bass is much louder. hat leads me to believe its tapering off quickly up past 15 and is flat by 20.
So it looks like it starts at about 15 on the radio. After that the bass planes out and the mids and highs overtake the bass. The pots on the LOC are 3/4 up. The gain on the amp is 3/4 up and the remote gain is at 1/2. I had this system in two other cars, both with fact amplified systems and didn't have this issue. When I turn the radio up then turn the remote gain **** up I ac get to equal out but when I turn the radio back down its disproportionate. The bass is much louder. hat leads me to believe its tapering off quickly up past 15 and is flat by 20.
Last edited by it8ezbngrn; 10-13-2018 at 12:59 AM.
10-16-2018, 04:28 PM
#98
Senior Member
I tried the flatten EQ mod ONLY and it did not work. Still had a difference in bass to highs. What I did notice is the chimes went from the speakers to a module behind the cluster. Took a few key cycles to get it back to the speakers after resetting. Then it would not recognize my USB flash drive, kept repeating it even after I removed it. Panic set in. Reloaded the ACM orig again. SNAFU still have the EQ
Does it have to be combined with the other code? I'm powering stock speakers through the head unit still. Just want to get rid of the EQ before committing to a second amp or a new 5 channel. Volume wise for me it's loud enough, but I hate the roll off of the lower frequencies. What's weird is, I just played some old DJ Laz bass track and it sounded like the EQ was gone, but that can't be.
Does it have to be combined with the other code? I'm powering stock speakers through the head unit still. Just want to get rid of the EQ before committing to a second amp or a new 5 channel. Volume wise for me it's loud enough, but I hate the roll off of the lower frequencies. What's weird is, I just played some old DJ Laz bass track and it sounded like the EQ was gone, but that can't be.
10-16-2018, 05:42 PM
#99
i think my ACM requires a few key cycles to work. I also had USB issues associated with the change. Today I did the Kicker Forscan mod and it fried a USB drive. So I will not be leaving those plugged in. I am back to stock codes.
10-24-2018, 02:46 PM
#100
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I just got my F-150 and I am looking to put my stereo in from my past car.
I am wanting to do the FORScan mod for the de-EQ sound and low level outputs. Everything I have read seems everyone has the 8" screen option, will the same codes and mod work for the 4" screen model?
I am wanting to do the FORScan mod for the de-EQ sound and low level outputs. Everything I have read seems everyone has the 8" screen option, will the same codes and mod work for the 4" screen model?