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Kenwood Sub vs Bazooka & Crossover requirement

Discussion in 'Gen 2 Prius Audio and Electronics' started by tyang54, Apr 15, 2008.

  1. tyang54

    tyang54 Junior Member

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    Been looking at the Kenwood KSC-SW10 installations and based on what i see it seems like you have to install some kind of Crossover in order to control the front door speakers. Since the install only taps the rear speakers, wires, the front and rear speaker are still receiving full frequency information. Meaning that rattling hollow sound coming from the doors will still be there (though supplemented by cleaner base from the kenwood). I saw in the LA Car bazooka amp article that the Bazooka has a built in crossover. Would that help some of this problem? If so, did they run new speaker wire from the bazooka to the doors?

    LA Car.com - The Cars and Culture of Southern California Magazine & Directory - PROJECT PRIUS: BREAKING THE SOUND BARRIER

    The article states "More importantly, the midrange is now dramatically more open sounding. With the Bazooka's crossover network cutting off the lower bass from the midrange-woofer drivers, they are free to reproduce the midrange without having to do double duty on the bass. The result is a cleaner sound overall. The Prius now has a sense of transparently and immediacy that is lacking in the factory system."
     
  2. donwon19

    donwon19 New Member

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    I had the Kenwoods installed two weeks ago and the transformation is incredible. I couldn't be happier. Let me know if you have any specific questions.
     
  3. tru.cutru

    tru.cutru New Member

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    I installed my bazooka in the weekend BTA6100, the midranges do sound alot more clear and the base is strong as hell. I couldnt believe the strenght of the base coming out of such a small device. The sound never distorts one bit, but you are right it does rattle a bit when the base is very high, but I still love it. There should be a way to stop the rattling, Ill find out, there is always a way

    PS The base COMING Out of the bta6100 is almost too much for prius, it is definetly worth the 150 bucks
     
  4. tyang54

    tyang54 Junior Member

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    What I am trying to understand is
    1. if the bazooka crossover actually filters out the low pass signal for the door speakers, allowing them to work a lot less harder (which the article seemed to suggest). Or rather,
    2. does the bazooka crossover just filter the signal going to itself, leaving the original speaker to continue to try to produce the full range of sound, supplemented by additional base.

    For the best sound obviously #1 would be preferable, but it seems that based on the wiring diagrams I have studied, that it is only possible to achieve #2 without adding a lot of additional equipment like signal processors, active crossovers and amplifiers.
     
  5. 9G-man

    9G-man Senior Member

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    Actually I think you are misunderstanding what the sub's cross-over is doing. The cross-over in the sub amp itself has no effect on the bass load sent to the door speakers.
    I know everyone says the addition of an amp and sub reduces the bass load on the door speakers, and expands the mid range.....
    But that is an indirect result. They are turning down the bass on the head unit, (relieving the bass load on the door speaker), and then allowing the subwoofer to handle the bass load through it's crossover.
    The door speaker bass load reduction is not related to the sub's crossover.
    Simply, you are tuning down the bass at your head unit, and turning up the bass at the sub. That is the only relationship between the two, with a simple subwoofer install.
     
  6. tyang54

    tyang54 Junior Member

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    Thank you for the responses. I guess that is a little dissapointing - turning down the base at the head unit is so imprecise. Do we know what the crossover needs to be set at then in order to catch the frequency drop off and do a properly handoff from the door speakers to the sub?
     
  7. tru.cutru

    tru.cutru New Member

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    It all depends on whatever sounds best for your ear, the music you are playing, and how well your door speakers (OEM?) can handle the base. Furthermore, the BTA6100 (bta6200 has an adjustable crossover, but thats an overkill for me at this point and considering is around 50 or a 100 dollars more) has a fixed crossover and a knob to variate the output of the sub, but since I have an aftermarket radio installed I can tweak the sound alot more. Someone can expand on this and get into specifics. I tis 5 in the morning, I have atest in 5 hours, I am too tired to talk about frequencies.
     
  8. tru.cutru

    tru.cutru New Member

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    exactly
     
  9. 9G-man

    9G-man Senior Member

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    If you had an adjustable crossover, the goal would be make the bass, from the sub , sound as if it comes from everywhere. If the bass from the sub sounds like it's coming from the rear, adjust crossover so it doesn't.

    But don't fret, fixed crossovers are set to the freq. where the typical door speaker is limited, with the intent to accomplish the goal.
     
  10. zenMachine

    zenMachine Just another Onionhead

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    The Kenwood sub has a remote controller that has two knobs. One to control the volume, the other to vary the crossover frequency. Neither one affects what goes into the door speakers (of course!)

    After much experimenting with various types of music (classical/electronica/folk/rock/etc.), I now have mine fixed at one crossover point and volume level. I rarely have to mess with them anymore. If I need to increase/decrease the bass or midrange level for a particular song or album, I use the Head Unit's equalization setting. It works out well for me.
     
  11. tru.cutru

    tru.cutru New Member

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    What you want is a crossover before your door speakers (most descent speaker units come with crossovers: Kenwood, Alpine, Pioneer, Eclipse) this way you will get the most base out of the subwoofer without the risk of blowing your door speakers. The rattling will stil be there if you blast the base, unless you put some kind of insulation or somehow stop the rattling? :rolleyes: which I am not really sure how to do.

    PS: Google and Wiki are your friends.
     
  12. priusenvy

    priusenvy Senior Member

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    Sorry, but you simply have no clue what you're talking about. Those crossovers will do nothing to limit the low frequencies going to the door speakers. :rolleyes:

    The normal way you would limit the low frequencies going to the door speakers is enable the high-pass filter on your amp. In a high-end, bi-amped system you might have an active crossover before the amp. But that passive crossover that comes with the speakers is only to cross over between the mid-woofer and the tweeter, it does NOTHING to limit the low frequencies sent to the mid-woofer. The included crossover provides a low-pass filtered signal to the mid-woofer, not a band-pass filtered signal.
     
  13. tru.cutru

    tru.cutru New Member

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    Oh really? hah...haha...:p I didnt even know that, I guess next time I should read the specs (I havent put door/mid-woofers on my prius yet)

    "The normal way you would limit the low frequencies going to the door speakers is enable the high-pass filter on your amp"

    That would be the amp going to the speakers not the mid-woofers right?
     
  14. neon tetra

    neon tetra Member

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    The article states "More importantly, the midrange is now dramatically more open sounding. With the Bazooka's crossover network cutting off the lower bass from the midrange-woofer drivers, they are free to reproduce the midrange without having to do double duty on the bass. The result is a cleaner sound overall. The Prius now has a sense of transparently and immediacy that is lacking in the factory system."



    I read the same article & was wondering the exact same thing. The article seemed pretty knowledgeable, but that part confused me. Is what they are saying possible?
    I'm looking to install a bazooka tube soon, and I'd like to know the best way to do it.