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adding extra subwoofers to Si

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Old Jun 25, 2006 | 09:04 PM
  #1  
BENZ SiVIC's Avatar
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From: Bay area, CA, usa
Default adding extra subwoofers to Si

I plan on adding two 12" subs to my Si and want to know if anybody here has done so too and would like to know if they kept there stereo system stock while adding the subs. I have a 1000 watt amp, and should I add a capacitor? and I also have a converter cause I don't know if the stock deck has rca's in the back of the stereo deck? I am gonna have circuit city (car audio installation run my wires in my Si soon and want to know if since there is already a stock 8" sub installed, can I use the subwoofer adjust level **** on my stock deck to adjust the bass level on my extra subs I'm going to install?
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Old Jun 25, 2006 | 09:21 PM
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STI champstar's Avatar
 
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From: anacortes, WA
Default Re: adding extra subwoofers to Si (HYPHY SiVIC)

aw crap. stereo guy. setting off my car alarm. i hate you!

but i think your gonna need an aftermarket deck for aftermarket subs. the stock one probably does not put out nearly as much as a new sony or something like that and it'll have all the ports for amps, subs, etc.
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Old Jun 26, 2006 | 06:57 AM
  #3  
SLiCkNiCk's Avatar
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Default Re: adding extra subwoofers to Si (STI champstar)

I was thinking of putting a 12" in my SI. what I have done in the past is used an RCA converter in the trunk that hooks to the factory speakers. Most shops use them if you don't have an aftermarket HU with pre-outs. I was also wondering if they hooked the converter to the factory sub, then you should be able to use the sub controller in the factory HU? I guess we'll find out soon
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Old Jun 26, 2006 | 03:40 PM
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06sik20z3's Avatar
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Default Re: adding extra subwoofers to Si (SLiCkNiCk)

okay slow down before you go out and blow something up first off make sure you have a decent line out converter capable of running 100+ watts through it or you will just smoke it if you are running it through your factory subwoofer, i dont know what the rattings are on just the componets though but it wouldnt sound as good b/c the componets are at a lot higher frequency than the sub. yes you will be able to adjust it through the factory headunit but not that well, especially if you go through the componets. as far as a capacitor goes it would honestly depend on the type of amp and how much power you are shooting for. is that it?
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Old Jun 26, 2006 | 04:08 PM
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noob with an RS's Avatar
 
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DON'T EVER EVER EVER BUY A CAPACITATOR. this is not a caraudio forum so i doubt anyone knows to tell you to NOT get a capacitator. so im telling you now: DO NOT GET A CAPACITOR EVEN IF YOU HAVE A TWO THOUSAND WATT SYSTEM it will not help you audibly. you may want one if your system is using so much power, your lights are dimming. but if your lights are dimming, you can change out the three main GROUND wires in your car to eliminate the dimming.. i repeat, CAPACITATORS do not HELP YOUR SYSTEM.
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Old Jun 26, 2006 | 04:09 PM
  #6  
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Default Re: adding extra subwoofers to Si (06sik20z3)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 06sik20z3 &raquo;</TD></TR><TR><TD CLASS="quote">okay slow down before you go out and blow something up first off make sure you have a decent line out converter capable of running 100+ watts through it or you will just smoke it if you are running it through your factory subwoofer, i dont know what the rattings are on just the componets though but it wouldnt sound as good b/c the componets are at a lot higher frequency than the sub. yes you will be able to adjust it through the factory headunit but not that well, especially if you go through the componets. as far as a capacitor goes it would honestly depend on the type of amp and how much power you are shooting for. is that it?</TD></TR></TABLE>
line-out converters convert the speaker signal to a low-voltage signal which the amplifier will amplify.. the converter does NOT need to be able to handle high power unless you have some kind of super high-tech unheard of CD PLAYER that puts out mad wattage.. a stock head unit will put out no more than 20 watts to a speaker...... and i have no idea what you are trying to say about the components other than they have an RMS rating..

HYPHY SiVIC.. i believe the SI's come with a stock amplifier like the RSX.. i think you have to find out which wires are the speaker wires that go TO the amp.. i dont think youre going to be hooking it up from the stock amp.. im not quite sure about the SI's sound system details.. but if i was in your shoes id go with something like a JL cleansweep or an audiocontrol LC6 for better sound quality.. then again, im a hard-core audiophile if it's impossible to bypass the stock amplifier and use a LOC at the same time you might as well go aftermarket head unit.


Modified by noob with an RS at 5:20 PM 6/26/2006
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Old Jun 26, 2006 | 04:22 PM
  #7  
Demonis's Avatar
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I'm going to have some fun with this when I get around to doing the same thing...
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Old Jun 28, 2006 | 03:19 PM
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06sik20z3's Avatar
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Default Re: adding extra subwoofers to Si (noob with an RS)

what i was trying to say is yes it does have a stock amp that powers the sub and if puts the loc on there it will blow the loc if it goes beyond its recomendations its hard to explain this on the internet
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