Audio Installing Sub in 2005 Suburban with Bose

Discussion in 'Audio, Video & Gadget Tech' started by boggart, Dec 20, 2011.

  1. boggart

    boggart New Member

    I've tried searching to no avail. I have a 2005 Suburban LT, happens to have the Bose sound system. I installed a JL Audio AMP JX360/2 amp, running a single MTX Thunderthin 12" sub at 4ohm. The sound output is just horrible, can barely tell it is there. I think I have discovered that the reason for that is that I am tapped into the left rear door speaker, have tried both with Line out Converter, and now wired into the amps built in hi level input.

    My question is, where is the best place to tap the speaker wire for input into the amp for maximum Bass output. This amp/sub combination should be very hard hitting and clear, and honestly, unless listening to some heavy bass hip hop you can't even tell it's there so I know I'm tapped into the wrong spot. Where should I tap, and should I use a line out converter to go into the amps Low Level Inputs, or should I just extend the speaker wire and use the amps built in high level input?

    Any help is appreciated.

    Again, sorry if it seems I should find the answer here, but I really did try searching my answer.
  2. kburb

    kburb Rockstar ROTM Winner 100 Posts

    use the line converter and since its a sub it should be connected to the low level side of the amp.i know its a stupid question but have you adjusted the gain, alos dont forget to set the crossover if its got one, 80hz is a good place to start

    ---------- Post added at 11:40 PM ---------- Previous post was at 11:33 PM ----------

    Just checked the amp out on the JL website, look like the JX took the place of their E series amps, hook the line converter the the rear speakers, set the crossover at 80hz, bridged the MTX sub to the amp and adjust the gain to bout half. Then rock on.

    Part of the problem may be the BOSE system has a low/hi pass filter sytem and you are getting nothing but the highs form the door speaker...just a thought
  3. vncj96

    vncj96 Epic Member 5+ Years 1000 Posts

    your line out needs to be tapped to both sides not just left, i have worked on a lot of stereos and using the lineout is just a temp solution in my opinion, just spend the money and get a new factory deck, just because you have a BOSE stereo doesnt mean its high quality, its advertising thats it, all the components are still GM AC/Delco nothing special. Just like Chrysler and its use of Infinity they still suck because they are factory components. You can use the factory speakers but I would just bypass the factory crap all together (wiring & amp), get a new head unit and run new lines to the current speakers with bass blockers, or if your aftermarket headunit lets you to tune out the bass to the speakers, as your sub and amp will be more then enough bass.
  4. Enkeiavalanche

    Enkeiavalanche Loving the Outdoors Staff Member 5+ Years ROTM Winner 5000 Posts

    As said above... If you have the funds after the holidays Rip out the Bose system.. You will get a cleaner sound. You could get a good 5ch Amp to redo your system..
  5. FrigginNoodles

    FrigginNoodles Epic Member 5+ Years 500 Posts

    I had the same problem with very low bass levels and gave up and bought a deck my first time around. Now that I have a 6 disc changer w/ all the steering wheel controls I wanted to keep my factory deck. You have to tap your Line Out Converter into the speaker wires (for both sides) before the signal goes through the stock bose amplifier. I just removed the center console and tapped the rear speaker wires right before they entered the amp. Once that was done my subs worked great. Hope this helps.
  6. 03 SIERRA

    03 SIERRA Rockstar 100 Posts

    I may have to disagree with almost all of you. Boggart just wants to add a subsub to the stock Bose . I did this on my 03 1500 I purchased a PAC line out converter that just plugged into the back of my stock head unit. Out came all 4channels RCA style plugs and an ign wire. No splicing at all easy work and the quality is just fine fore me. I just hooked up all the wires and tucked them away nicely. Once tuning was done I now have full control with the factory bass adjustment.

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