Bose system, amp, front speakers
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2004-2007 Cadillac CTS-V Appearance Mods Discussion, Bose system, amp, front speakers in Cadillac CTS-V Series Forum - 2004 - 2007; Anyone have a diagram of the bose system? Do the tweeters run in series or parallel with the front door ...
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    Bose system, amp, front speakers

    Anyone have a diagram of the bose system?
    Do the tweeters run in series or parallel with the front door speakers (w pass covers) or does the Bose amp run independent active channels?
    Id like to install a pair of 6.5 components, replacing the the tweeters and door speakers and run it off the Bose amp. And I'd like to use the crossovers that come with the components. Any suggestions? ( I heard the Bose door speakers are crossed over and not full range).
    Thanks!

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    FuzzyLogic is offline Banned
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    Re: Bose system, amp, front speakers

    I think Darkman has those diagrams.

    Why don't you just replace the door speakers and run a line-out converter off the subwoofer output into a mono amplifier, and then into a nicer subwoofer? I just did that with excellent results. Didn't touch the tweeters.

    Here's the package that I selected after 15 hours of research. I think it's very cost-effective. Throw away everything from the Polk Audio kit except the mains. The subwoofer is ridiculous. Definitely not a one-note bass machine. You'll barely be able to fit it in the original hole--even after you go around the inner lip with a nibbler. I'm still trying to tune it correctly and lock down the vibration caused by the XM amplifier and assorted plastic parts in the rear deck. Might want to pick up some sound absorbent foam (e.g. Luxury Liner Pro) to pack in various places, including the passenger side rear seatbelt mechanism.

    http://www.amazon.com/gp/product/B00...ms_ohs_product
    http://www.amazon.com/Infinity-Refer.../dp/B002BZE36E
    http://www.amazon.com/gp/product/B00...F8&me=&seller=
    http://www.amazon.com/R1100M-Monoblo.../ref=pd_cp_e_1
    http://www.amazon.com/KIT-2-Complete...d_bxgy_e_img_b
    http://www.amazon.com/Absolute-MM100...dp/B0031AW2UM/
    http://davidnavone.com/zencart/index...&products_id=1

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    Re: Bose system, amp, front speakers

    Quote Originally Posted by FuzzyLogic View Post
    I think Darkman has those diagrams.

    Why don't you just replace the door speakers and run a line-out converter off the subwoofer output into a mono amplifier, and then into a nicer subwoofer? I just did that with excellent results. Didn't touch the tweeters.

    Here's the package that I selected after 15 hours of research. I think it's very cost-effective. Throw away everything from the Polk Audio kit except the mains. The subwoofer is ridiculous. Definitely not a one-note bass machine. You'll barely be able to fit it in the original hole--even after you go around the inner lip with a nibbler. I'm still trying to tune it correctly and lock down the vibration caused by the XM amplifier and assorted plastic parts in the rear deck. Might want to pick up some sound absorbent foam (e.g. Luxury Liner Pro) to pack in various places, including the passenger side rear seatbelt mechanism.

    http://www.amazon.com/gp/product/B00...ms_ohs_product
    http://www.amazon.com/Infinity-Refer.../dp/B002BZE36E
    http://www.amazon.com/gp/product/B00...F8&me=&seller=
    http://www.amazon.com/R1100M-Monoblo.../ref=pd_cp_e_1
    http://www.amazon.com/KIT-2-Complete...d_bxgy_e_img_b
    http://www.amazon.com/Absolute-MM100...dp/B0031AW2UM/
    http://davidnavone.com/zencart/index...&products_id=1
    Well, I did think about that too. I'm a little old school and like the components from back in the day... Soundstream, Boston pro, eclipse, etc. I know the Bose amp, is weak and will hardly these components. But, if the Bose amp has full range output, I'd like to I've it a whirl, and if it isn't powerful enough, then I'll add a line output converter and an amp.
    I do totally agree with you, the sub blows. When I change that, I'll use an external amp, but I have to decide if I want to risk a free air sub to save space, or go with a box.

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    Re: Bose system, amp, front speakers

    For what it's worth, that Infinity subwoofer is effing ridiculous compared to the stock one. Nice and clean too across the frequency response range, assuming that you can lock down the vibration from other components sitting on the deck.

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    Re: Bose system, amp, front speakers

    Quote Originally Posted by FuzzyLogic View Post
    For what it's worth, that Infinity subwoofer is effing ridiculous compared to the stock one. Nice and clean too across the frequency response range, assuming that you can lock down the vibration from other components sitting on the deck.
    That shouldn't be a problem. Is this a free air sub? Or what type of enclosure did you use?
    Thanks!

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    Re: Bose system, amp, front speakers

    Quote Originally Posted by Scott2012 View Post
    That shouldn't be a problem. Is this a free air sub? Or what type of enclosure did you use?
    Thanks!
    Free air. Fits in the stock location, like so (not my picture, but very similar):


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    Re: Bose system, amp, front speakers

    How is the response of the woofer? The specs call for a sealed or ported enclosure. Doesn't mean it doesn't sound great, I've always been afraid of free air applications because they can sound great, or horrible.
    For the price I might give it a whirl

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    Re: Bose system, amp, front speakers

    Quote Originally Posted by Scott2012 View Post
    How is the response of the woofer? The specs call for a sealed or ported enclosure. Doesn't mean it doesn't sound great, I've always been afraid of free air applications because they can sound great, or horrible.
    For the price I might give it a whirl
    Sounds pretty good. I wondered the same thing at the time and figured I'd give it a try anyway. I'm definitely not hurting for volume, either. That BOSS amplifier is set to about 25% volume (and the +18 dB bass boost on the amp is disabled) with the Bose head unit cranked and both 4 ohm input connected in parallel (so the amp sees 2 ohms). Any higher and the subwoofer starts dominating the soundstage.

    Keep in mind that I'm serious about barely being able to fit this subwoofer in there. You'll have to temporarily move aside the plastic fixture in the back deck that various electronics are mounted to and slightly increase the diameter of the hole with a nibbler or some other power tool. Even then, you'll be squeezing this thing down there and it'll just barely make it. Once it's there, you'll find that it doesn't mount the same way as the old subwoofer. I sunk three screws up into the curved area of the subwoofer hole's lip at a 45 degree angle and into the foundation legs of the subwoofer. That locked it down very nicely. Otherwise, the sub probably would've launched itself out of the hole and through the rear window.

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    Re: Bose system, amp, front speakers

    Great info, thanks a ton!
    I'm going to get a mono amp and line out converter. I also have a 10" mb quart subwoofer I may try. If it fits and sounds ok, I'll let you know. If its a flop, I'll get the infinity.

    Did you use dynamat or rubberized spray foam for the rear deck?

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    Re: Bose system, amp, front speakers

    Quote Originally Posted by Scott2012 View Post
    Great info, thanks a ton!
    I'm going to get a mono amp and line out converter. I also have a 10" mb quart subwoofer I may try. If it fits and sounds ok, I'll let you know. If its a flop, I'll get the infinity.

    Did you use dynamat or rubberized spray foam for the rear deck?
    Neither. I applied a small damper layer (Damplifier Pro) in places and an absorber (Luxury Liner Pro) in others. Targets include the XM unit, the side seatbelt tensioners, and basically everything attached to that big piece of black plastic back there. If you have a PA15-VETTE or other iPhone/Android platform interface, you might want to try downloading a frequency generator application that'll let you output a steady tone at any frequency you choose to isolate noise sources.

    Off the top of my head, you'll want to pack a thick absorber between the passenger side seat belt tensioner and the A-pillar, and apply a combination of damper and absorber both beneath and in-between the XM Radio mounting plate and the body of the unit itself. Otherwise it rattles at either 45 or 55 Hz (can't remember right now).

    To derive power and ground, I chose the lines running to the Bose amplifier--trunk, driver's side rear. There's a nice, hard ground there and you'll find a ~14 gauge red wire in the big white multi-pin connector attached to the amplifier. If you need more power than that, I think that some people have utilized the ~12 gauge wires running between the rear fuse boxes (in front of the rear seats), or run 8 gauge wire all the way to the battery.

    Edit: For what it's worth, here's the diagram you were asking for:

    http://www.cadillacfaq.com/faq/answers/pdf/bose.pdf

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    Re: Bose system, amp, front speakers

    Looking at this, it appears the tweeters are on separate channels from the mids in the doors. If I were going to use external amps for full range front speakers, where would I tap the line out converter into?

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    If you swap out the speakers and keep the stock amp keep in mind the Bose runs 8 ohms. Best option is a signal processor like JL Audios cleansweep if you're not replacing everything IMO.

    I tore everything out

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    I have the diagrams I can post up tonight if you still need them.

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    Re: Bose system, amp, front speakers

    Quote Originally Posted by etcts-v View Post
    I have the diagrams I can post up tonight if you still need them.
    Yes, please post

    So if the Bose amp runs at 8 ohms, and the door speakers are 1 ohm, then the tweeters must be run in parallel withe door speakers with passive crossovers. If that's the case, hen I cold just use a line out converter, add an amp, and run a real pair of components?

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    Re: Bose system, amp, front speakers

    Here are the two diagrams, also here is a link to a share I have for the entire factory service manual and GM service manual software: https://docs.google.com/folder/d/0By...ROWmtwZ0E/edit

    You know I think I'm wrong actually on the 8ohms, I think someone told me that and it got in my head but I would do a search first, been a few years since I pulled mine! haha






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