TrueMetalGeek
Junior Member
So some history and why my opinions and needs...
I've been driving since the 1980's. So I have gone through the generation of vehicles with older systems where the head unit and speakers were NOT interconnected to any other vehicle control aside from accessory power and where you were 100% free to shoehorn in ANY aftermarket system you pleased with little regard...
Then the mid 2000's came when they started to really integrate the head units with the body control module as well as get away form the din and double din head unit standards...
Although, I did swap out that miserable first gen "U-Connect" non touchscreen double din in our 2013 Grand Caravan. I had an Android Auto deck with built in 4 channel + sub crossover that made that system rock...
Fast forward to my 2015 Ford F-150 Platinum with it's "Sony premium" system. My first vehicle with a non removable din or double din based head. Subwoofer was a joke. So I replaced that with my own sub and amplifier. Problem solved. Sounded great.
Then I had a Grand Cherokee with that 11 speaker Harmon Kardon. Which, damn. That was the first vehicle I never ever tore out any components or added anything. It ALMOST had enough of the low bass to not even create the need to add one and of course the lack of room for placement sealed the reason not to. I was totally content. Great sounding system!!!
Then the 2025 Ram Rebel with it's Alpine system.
I do like the truck overall. But immediately, that audio system sucked. Especially coming form the most beautiful stock surround system I ever had in the Jeep GC (the best aspect of that vehicle besides the Hemi and paddle shifters).
Of course the first thing to go was the sad excuse for a subwoofer. That plastic box and triple coil sub was very quickly removed and replaced with the same sub amp I've used for 20 years now (literally from daily driver to new daily driver, except the Jeep GC).
I did have to add a pre-amp with cross over to fine tune the signals from the factory signals to get the sub to sound right. But that part works great now.
But then I kept wondering why the highs were so none existent. Like as if a bandpass filter was scooping out everything above 10k.
Well. I finally popped out those speakers in the front dash and tested them. No tweeters and no reproduction of any of the higher treble frequencies. It was as if Ram left out the highs in this system!
So, in went in a set of Infinite Reference 2 way component speakers.
Yes! Man that fixed the highs that was completely missing form this system.
But then I replaced the same exact 3" speakers in the rear in the headliner.
Now, while the system is night and day BETTER than it was. I just keep noticing that I don't seem to be hearing the instruments and voicing from the rear as I expect from a somewhat high end system with "surround sound" etc etc.
I figure it is because those rear component speakers are still facing down and don't have the deflection to my ears like the ones up front do with the windshield.
But now this week, I use the fader to the back. Notice in deed those very same speakers don't seem to be delivering anything remotely like they do up front. So I hop in my back seat and am like "WTF is this?"
It seems that the system is delivering a very limited band of frequencies to those channels.
Like no deeper mids. And not much for highs but some. But like a very narrow bandwidth somewhere above the major vocal range and the highs. Sounds like to be honest. What is going on here???
So now if I were to make any other changes I would be curious if the bandpass of frequencies is done via the factory amp under my driver seat, to where I could just finally replace that thing entirely and set up my own with another active crossover, or if this effect is from the line side feeding the amp
My gut makes me think it's in the amp since the amp has the noise cancelling inputs and all the dedicated channel outputs for the door speaker vs "mids" speakers vs the subwoofer channels etc.
Anyone have a source for some reliable wiring schematics? (I am an electronics guy, so I DYI for all of my needs). I think I found a set a while back after downloaded a ton of incorrect ones. But then I never got into the factory amp wiring and had just used the powered sub lines to feed into an active crossover to solve my sub problem when I got the truck over a year ago now.
I had a mid 1990's Mustang with the "MACH 460" audio system that I thought was goofy back then (6x8 door speakers for mono "woofers" and the same type of treble robbing mids and three amps, but was easily overcome). Seems that this is almost the same setup except it is part of an even more module based factory integrated system.
My system does rock pretty good now with what I have done. It is almost good enough. But I just feel I should have a little more of that voice and highs coming from the rear for a bit more spatial sound effects.
I've been driving since the 1980's. So I have gone through the generation of vehicles with older systems where the head unit and speakers were NOT interconnected to any other vehicle control aside from accessory power and where you were 100% free to shoehorn in ANY aftermarket system you pleased with little regard...
Then the mid 2000's came when they started to really integrate the head units with the body control module as well as get away form the din and double din head unit standards...
Although, I did swap out that miserable first gen "U-Connect" non touchscreen double din in our 2013 Grand Caravan. I had an Android Auto deck with built in 4 channel + sub crossover that made that system rock...
Fast forward to my 2015 Ford F-150 Platinum with it's "Sony premium" system. My first vehicle with a non removable din or double din based head. Subwoofer was a joke. So I replaced that with my own sub and amplifier. Problem solved. Sounded great.
Then I had a Grand Cherokee with that 11 speaker Harmon Kardon. Which, damn. That was the first vehicle I never ever tore out any components or added anything. It ALMOST had enough of the low bass to not even create the need to add one and of course the lack of room for placement sealed the reason not to. I was totally content. Great sounding system!!!
Then the 2025 Ram Rebel with it's Alpine system.
I do like the truck overall. But immediately, that audio system sucked. Especially coming form the most beautiful stock surround system I ever had in the Jeep GC (the best aspect of that vehicle besides the Hemi and paddle shifters).
Of course the first thing to go was the sad excuse for a subwoofer. That plastic box and triple coil sub was very quickly removed and replaced with the same sub amp I've used for 20 years now (literally from daily driver to new daily driver, except the Jeep GC).
I did have to add a pre-amp with cross over to fine tune the signals from the factory signals to get the sub to sound right. But that part works great now.
But then I kept wondering why the highs were so none existent. Like as if a bandpass filter was scooping out everything above 10k.
Well. I finally popped out those speakers in the front dash and tested them. No tweeters and no reproduction of any of the higher treble frequencies. It was as if Ram left out the highs in this system!
So, in went in a set of Infinite Reference 2 way component speakers.
Yes! Man that fixed the highs that was completely missing form this system.
But then I replaced the same exact 3" speakers in the rear in the headliner.
Now, while the system is night and day BETTER than it was. I just keep noticing that I don't seem to be hearing the instruments and voicing from the rear as I expect from a somewhat high end system with "surround sound" etc etc.
I figure it is because those rear component speakers are still facing down and don't have the deflection to my ears like the ones up front do with the windshield.
But now this week, I use the fader to the back. Notice in deed those very same speakers don't seem to be delivering anything remotely like they do up front. So I hop in my back seat and am like "WTF is this?"
It seems that the system is delivering a very limited band of frequencies to those channels.
Like no deeper mids. And not much for highs but some. But like a very narrow bandwidth somewhere above the major vocal range and the highs. Sounds like to be honest. What is going on here???
So now if I were to make any other changes I would be curious if the bandpass of frequencies is done via the factory amp under my driver seat, to where I could just finally replace that thing entirely and set up my own with another active crossover, or if this effect is from the line side feeding the amp
My gut makes me think it's in the amp since the amp has the noise cancelling inputs and all the dedicated channel outputs for the door speaker vs "mids" speakers vs the subwoofer channels etc.
Anyone have a source for some reliable wiring schematics? (I am an electronics guy, so I DYI for all of my needs). I think I found a set a while back after downloaded a ton of incorrect ones. But then I never got into the factory amp wiring and had just used the powered sub lines to feed into an active crossover to solve my sub problem when I got the truck over a year ago now.
I had a mid 1990's Mustang with the "MACH 460" audio system that I thought was goofy back then (6x8 door speakers for mono "woofers" and the same type of treble robbing mids and three amps, but was easily overcome). Seems that this is almost the same setup except it is part of an even more module based factory integrated system.
My system does rock pretty good now with what I have done. It is almost good enough. But I just feel I should have a little more of that voice and highs coming from the rear for a bit more spatial sound effects.
