Add aftermarket amp and sub in 2020 platinum w jbl. Very very simple

If no one has figured it out yet you dont have to get a dsr1 to add a new amp and sub. Remove shitty jbl woofer behind driver back seat the get a $20 scoche

$20 loc2sl line output converter with remote control knob - 2CH high/low RCA converter car audio - ideal for subwoofer amp - line level converter for car stereo - easy installation - quality sound

loc2sl from walmart and hook it to ur sub wires then run ur rca to amp dont even have to mess with factory amp under front seat. What an improvement.

 

I still have some cleaning up to do with the wires jst wanted to make sure it worked bc every one says u have to wire a dsr1 or other expensive items. Heck with that this sound good enough for my Arkansas hillbilly ass

 

Sub channel is simply a mono channel with very limited frequency range, ie. 20-100 hz. In your application, you’re right. You don’t need a digital sound processor. You would need it if you wanted to replace the actual mid-high speakers and install a new amp. You need to “unprocess” the highly processed sound the factory jbl system produces.

 

Regardless sounds 100 percent better. And i can now turn my bass all the way down on hu and it really makes a big difference on the sound quality have done so much reading and looking on different forums and not one did i find where anyone did it that way.

 

Where did you tap into the remote power for the amp?

 

Its on loc

 

Will send better pic in a few

 

What is “loc”? Line out control?

 

Blue and whit by rca jacks. Orange pwers loc off amp only using one of jack bc of the mono sub wires

 

Where did you pull power from for the loc?

 

Amp

 

By doing it this way, does it turn on and off as it should? Any pop when you turn it on or off? Are you using the bass remote too? I like the idea of adding a little more power to the sub, but want to know the details before I start anything

 

Its really clean no popping i got a remote for bass boost and a remote for the loc kind of stupid but it works i leave the remote for loc about60 percent and adjust bass remote accordingly. I plan on getting an rca y when i can get a chance. And seeing if it makes a difference also

 

10”kicker combo box

 

well i b dam

 

So, does doing this eliminate the bass distortion from the mids? I think I could live with the stock mids and highs if the bass were better from the sub.

Was contemplating the sub enclosure combo from tech12volts but worried about it still having distortion from the mids when cranked up if I couldn't adjust the bass separately.

 

I turned my bass all the way down and there is no distortion in the mids and high i jst changed mine to the hilo inputs on the amp last night and quit using the rca inputs and it made it even better. Also if u have one set of sub wires be sure to wire your left and right channels together going into loc or hilo. I kept the loc hooked up jst for the remote since it works off of speaker signal. So still have my sub wire running to its input and then Td off of them to hilos. All i have now is my bass control off amp. This is gona sound weird but its almost as if the factory hu and amp communicate the signal as if they know its there

 

Definitely suggest doing some sound deadening/dynomat bc there is are quite a few things that rattle also if u decide to go through tech12volts. From what i here he hell of a guy to help ya out dont think he would steer ya wrong

 

Reviving an old thread here but I am hoping to do this on my 2021 with jbl. I have the kicker substage amp sub combo that was tailor made for my Silverado that I traded in. It has the high level inputs so I won’t be using an add-on device but no way to adjust anything. I am going to try this method to see if I can get it to work. It also turns on when it receives input (no remote wire).

I am going to try running the wires outside the truck and seeing how it sounds (or if it even works) when I turn it on. If all goes well I will do the full install and stand the sub up behind the rear seats (in the Silverado it faced down under the seat) but it sounded awesome and was all I needed bass-wise on that truck.

i appreciate your write up because it’s the closest thing solution-wise to what I would like to do.

 

Welp… I did a preliminary test and ran the wires outside of the truck, spliced into the sub wires and everything sounded good. So I pulled the power wire through the firewall. Ran all the wires down the channels under the paneling and buttoned everything up.

And. Then. I. Went. To. Reinstall. The. F***ing. Seat.

Doesn’t fit. The dang seat will not fit in with the sub box installed. I guess I just assumed it would. I left all the wires for now. I’ll check into a different sub solution in the future but man I was just hoping this would work. The last thing on my mind was “will the sub even fit?”.

Anyway that’s my update, thanks for reading.

 

Yeah tiny space behind the seat. Limits what you can put back there. Some have taken out the big piece of deadening matt behind the seat to get an extra tiny bit of space. It’s crazy that the cab is so big but no where to put anything.

 

Question when you hooked up line out converter how did you wire the subs wire to it can you explain a little better to me I’m trying to do this for my truck has the jbl factory please I’d appreciate you thanks so much

 

U can wire it to jst one or bothe sides. If you use jst one side then use jst that rca jack or u can wire to both sides and use both and ya theres very little room behind the seats so u definitely have to do some research on sub/box combo that will fit and not rub also