2019 ram HK system complete system upgrade

GOATinstructor

Active Member
Messages
54
Reaction score
30
Points
18
So you were able to install 2 of these boxes behind the rear seat with no issues? Do the seats have to be reclined or it doesn't matter?
2 boxes, yes. The seats have to be fully reclined in my situation. I did add a layer of noico 80mil, noico 170mil and a sheet of MLV, but even still, I don't think that even without the added material that you would be able to keep the seats fully upright.
 

Thatsme06

Member
Messages
22
Reaction score
2
Points
3
Location
Cape Coral, Florida
2 boxes, yes. The seats have to be fully reclined in my situation. I did add a layer of noico 80mil, noico 170mil and a sheet of MLV, but even still, I don't think that even without the added material that you would be able to keep the seats fully upright.
Okay that's what I wanted to know. I have the "solid mount" non reclining seats so will more than likely not work. Have to go under the seat!
 

wildh24

Ram Guru
Messages
506
Reaction score
247
Points
43
This is a difference of .07CuFt.

Is that a major difference? Would polyfil help bridge the gap?
I calculate or about .80 cf given its 5/8 mdf. So you're about 20% off the 'optimal' amount. Pink fiberglass insulation is worth a shot imho. Also, in box that is undersized, you'll typically have to over power to allow the sub to do what it is intending.

What is the power output on that amp?

What are you running your factory EQ at?
Try a flat bass EQ and playing with the gain.

The problem I see with running off there factory sub level is that the factory processing/EQ over emphasizes 55-90hz. Like way too much! That's exactly what your amp and subs are getting too and it may just be distorting the crap out of the signal.
 
Last edited:

GOATinstructor

Active Member
Messages
54
Reaction score
30
Points
18
I calculate or about .80 cf given its 5/8 mdf. So you're about 20% off the 'optimal' amount. Pink fiberglass insulation is worth a shot imho. Also, in box that is undersized, you'll typically have to over power to allow the sub to do what it is intending.

What is the power output on that amp?

What are you running your factory EQ at?
Try a flat bass EQ and playing with the gain.

The problem I see with running off there factory sub level is that the factory processing/EQ over emphasizes 55-90hz. Like way too much! That's exactly what your amp and subs are getting too and it may just be distorting the crap out of the signal.
The amp is a a 500W RMS at 2ohms. The subs are 250RMS max.

I did base the gain with the stock head unit bass at +2 or 3 because I wanted some of the mid bass from the doors. I am very new to this as I had a kicker hideaway in my previous truck and had pre-amp outputs on the old deck to simplify.

What do you recommend? Maybe run the stock equalizer bass low, like minus 1-3, set the gain for good volume and then adjust the remote "punch" equalizer to taste?
 

wildh24

Ram Guru
Messages
506
Reaction score
247
Points
43
I think you should start with setting the amp gain.


I'd set the crossover on your amp to around 70-90 hz. Drop the bass on the head unit EQ to flat. If the amp remote is a bass Boost vs a volume knob, I'd set it 0. If it's a volume knob turn it full. Turn the head unit volume to about 75%. Download frequency generator app and set it to about 50hz. Then slowly adjust your amp gain until it starts to distort or clip. That is kind of the way I've been taught to set the gain.

Then listen to some music you know well adjust as necessary to meet your liking.

If it's just not getting what you want, getting a flat signal to sub is maybe your next step and for that, you'd need a Amppro or DSR1.

I'd also definitely try the fiberglass. It's very inexpensive ($5 unbacked roll at home Depot).
 

Rob3989

Active Member
Messages
104
Reaction score
91
Points
28
No mine are under my seat but you could prob fit 1 behind the seat after removing then stock sub. Tw5s are the way to go for flat subs . Others also like the tw3 as well. I’m not a jl fan by any means but the tw5 is one of my favorite subs
 

Hackmunch

Active Member
Messages
165
Reaction score
50
Points
28
the smaller the box the higher the resonate frequency. poly fill might add up to 10% "box" volume. i would never ever use manufactures min unless you want to peak at higher than "normal" frequencies.
 

vinnie45acp

Active Member
Messages
39
Reaction score
4
Points
8
So I'm getting ready to pull the trigger on my system to replace the speakers in my HK system, and I need some help finalizing. I have read and read this and several other Threads at least twice and still don't think I have it all figured out, but can't wait for the perfect solution, need to start somewhere, but I do need some vital questions answered first.

So a ton of you have done speaker change outs of the HK system of the dash , door, and headliner, with the same and mix match Ohm values, however has anyone with the HK system changed out all there speakers, all the 3.5"s and 6x9's to all 2 ohm speakers? If so would there be any issues with me doing so? and would there also be any issues with me changing out the 3.5's to 4 ohms and the 6x9's to the 2 ohms? Right now this is what's in the Cart and ready to be purchased, 2 sets of CDT 6x9 HD-690CFS for all four doors lowers, and 4 sets (cause I can't buy them individually to make 7) of CDT HD-2 Hybrid 2"Mid/Tweeter combo's with appropriate brackets to replace the 3-Dash, 2 Headliner, and 2 Front upper door, 3.5" speakers. I will see what all that does and then see what I need to do about the SUB situation, but for now that is phase 1.

Second question is I have read and read about the polarity situation which I plan to check each individual speaker, but which Metra Harness am I supposed to use, which has the least amount of issues and seems to be easiest to work with or is the right one, the 72-6514 or the 71-050?

any and all help is eagerly accepted.
Thanks V
 

vinnie45acp

Active Member
Messages
39
Reaction score
4
Points
8
Are the HK speakers 2 ohm or 4 ohm this is a very important question that I feel most of us need answered, for the system to run right for the specific ohm speakers we choose, please advice, I have a order on hold and am going with either 4 ohm or 2 ohm with the info provided.
 

vinnie45acp

Active Member
Messages
39
Reaction score
4
Points
8
just wondering, for all those with the Alpine and HK systems, how many of you before deciding to replace speakers or do whatever upgrade you all decided to do, made sure you switched you systems from surround system to a front speakers system by going in the menu and turning off the surround sound option?

For those of you who did not you might want to do that first and see what a difference it makes first then make your decision.
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top