Good news for us '11 and beyond Sony 8" owners who want to bypass the Sony amp!
01-07-2017, 03:44 PM
#12
It's my local shop's favorite unit. Of course, they love all things JL but I haven't heard anything bad about it. However, the new RF unit skips a couple steps that JL has to go through by grabbing signal preamp.
01-15-2017, 01:12 PM
#17
Mmm... Guys I believe this can be done already, check this post that I did some days ago:
LOL...
I think we can help each other out... sorry for my English is not my primary language.
Currently on the F150 if you add separate audio system "upgrade" to your Sony system you will have to grab the signal AFTER the OEM Sony amplifier, which means that the aftermarket amplifiers will feed of the wires that go from the OEM Amp to the speakers.
When you do this there is specific vehicle equalization thats been done by the ACM and also noise/distortion from the OEM amplifier, basically the audio signal gets "Dirtier" everytime is touched by the OEM ACM and Sony amp. So if you add all your expensive aftermarket stuff after this you will have garbage in and garbage out.
Current ACM programming is to output "low level fixed signal equalized" which means the signal is less than 5V (what most oem and aftermarket amplifiers take as input) and the volume is constant, what makes the volume go up and down as you turn the volume **** is the can bus giving the OEM Sony amp the instruction to increase or decrease its output to the speakers. Also the signal is equalized from the ACM to best suit the truck interior, speakers and to protect them at high volumes by limiting bass which could destroy them.
In order to get a clean signal you would need to reprogram the ACM to output a "low level unequalized signal variable". Which means low power so that any aftermarket amp can receive it + unequalized which means all frequencies are flat and not exaggerated to compensate for vehicle or speaker shortcomings so with this you get a basic "standard" signal so to speak and Volume Variable which the ACM now increases or decreases the low level signal that is being sent to the amp so that any aftermarket amp works with the volume **** on your F150.
With this ACM "reprogram" you could scrap all the oem audio equipment starting with the Sony amp and You will only be left with a basic signal coming from the ACM (4 channels FR, FL, RR and RL) so that you can add all the aftermarket processors, amplifiers and speakers that you wish and suit them to your taste in audio getting a clean untouched signal.
LOL...
I think we can help each other out... sorry for my English is not my primary language.
Currently on the F150 if you add separate audio system "upgrade" to your Sony system you will have to grab the signal AFTER the OEM Sony amplifier, which means that the aftermarket amplifiers will feed of the wires that go from the OEM Amp to the speakers.
When you do this there is specific vehicle equalization thats been done by the ACM and also noise/distortion from the OEM amplifier, basically the audio signal gets "Dirtier" everytime is touched by the OEM ACM and Sony amp. So if you add all your expensive aftermarket stuff after this you will have garbage in and garbage out.
Current ACM programming is to output "low level fixed signal equalized" which means the signal is less than 5V (what most oem and aftermarket amplifiers take as input) and the volume is constant, what makes the volume go up and down as you turn the volume **** is the can bus giving the OEM Sony amp the instruction to increase or decrease its output to the speakers. Also the signal is equalized from the ACM to best suit the truck interior, speakers and to protect them at high volumes by limiting bass which could destroy them.
In order to get a clean signal you would need to reprogram the ACM to output a "low level unequalized signal variable". Which means low power so that any aftermarket amp can receive it + unequalized which means all frequencies are flat and not exaggerated to compensate for vehicle or speaker shortcomings so with this you get a basic "standard" signal so to speak and Volume Variable which the ACM now increases or decreases the low level signal that is being sent to the amp so that any aftermarket amp works with the volume **** on your F150.
With this ACM "reprogram" you could scrap all the oem audio equipment starting with the Sony amp and You will only be left with a basic signal coming from the ACM (4 channels FR, FL, RR and RL) so that you can add all the aftermarket processors, amplifiers and speakers that you wish and suit them to your taste in audio getting a clean untouched signal.