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i have a 2002 lx sedan. i got new speakers and getting an amp for christmas. i want to hook up the front speakers to the amp and some suubs to the amp. i want to hook up the back speakers to the hu. i have this head unit below. is this possible or do i have to hook up all the speakers to the amp? if so how can i hook up subs with the speakers hooked up to the amp?l

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Features

Green Negative LCD Display
CD-R/CD-RW Compatible
System Q
Source Tone Memory
24 Presets



CD Player Specifications

Anti Theft: None
Preamp Outputs: 1 set
Preamp Output Voltage: 1.8 volts
CD Changer Controls: No
Remote Control: No
RMS Power: 22W x 4
Peak Power: 45W x 4
CD Frequency Response: 10-20,000 Hz
FM Mono Sensitivity: 9.3 dBf
CD Signal-to-Noise Ratio: 96 dB
Amp Total Harmonic Distortion: n/a

 
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i dunno y u put all the specs for ur HU...... but anyway

ya u can hook it up like that, u'll need a 4 channel amp...... BUT....u may not have enuf power going to the subs..... so the subs may sound weak......

 
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but i olny have one set of preamps. will i still be able to hook it up like that.

 
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Get an adapter that converts the speaker wires into RCA's. You can then run a 4 channel amp with the rear channels bridged for a sub, or get 2 amps.

 
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Unless you have an amp specificaly designed to drive speakers and subs, it won't work. A standard 4 channel amp will run on either low pass (subs) or high pass (speakers). It's not really possible to run both off a four channel, otherwise you'll have just bass coming out the speakers, or a full spectrum of sound from the subs.

Your best bet would be to buy two 2 channel amps, or a two channel and a monoblock. You could also try a 5 channel, XTant makes one, JL makes one....I beleive PPI makes on as well.....possibly Phoenix Gold. The 5 channel amps are nice for a modest system, usually has 4 channels for the speakers, with anywhere from 25-100 watts per channel, and then a 5th sub channel that puts out between 200-300 watts.

And you CAN use more than one amp, even though you only have one pre-out. Most amps have a pre-out built into them, so you run one set of RCA's from the deck to the first amp, and another set of RCA's from the 1st amp to the 2nd amp.

Edit: you should look into another deck...I just re-read the specs, and it only has a 1.8 volt preout....not good....2 is the bare bare bare minimum, and you really should have a 4volt preout for the best signal...otherwise you have a potential for clipping the signal.

 
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;both my amps have a 3 channel mode of sorts...[IMG]i/expressions/face-icon-small-confused.gif[/IMG] and one is a real cheapy. 2 channels of high pass and 2 bridged to 1 for low pass. that setup will vary depending on amp, but that would work for you.

and yeah better preamp voltage is a must, esp if amp is in trunk. running that much line is going to decrease voltage at amp that much more too. [IMG]i/expressions/face-icon-small-frown.gif[/IMG]

 
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I think he'll be fine. I doubt he's gonna go out and get a new hu righ tnow cuz his pre amp output voltage is only 1.8 volts. If everything is done right, it shouldn't be a problem. almost all 4 channel amps have atleast 2 crossovers. you can bridge the rear and set a low pass filter and use the remaining two channels to power the front. as for you pre amp out, you can use the two that it has, then , you could get a line level convertor, or maybe your amp has speaker level inputs.

 
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Most 4 channel amps have front and rear crossovers. Lightning Audio makes staggard power 4 channel amps to run in 3 channel mode. The Stike series amps....people run systems like this all day. You can even do it with 90% of 2 channel amps. 4 ohm stereo then bridge a sub accross the terminals. The downside of this setup is you need external crossovers. Xtant doesnt make a 5 channel amp. The closest they have is the X604 and that uses passive outputs which are in parallel with either the front or the rear outputs and attenuated at either 4,8 or 12Db depending on what resistor module you put in. Just be sure to get a 4 channel amp with enuff power to run your sub in briged mode. Some suggestions would be the Lightning Audio like the S2.500.4 (40x2 on the front and 400x1 on the rear channels), Rockford Fosgate 550x or 750x or MTX 6304. These are all amps I have worked with and have no problem reccomending.

 
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Hmm, i've never seen a 4 channel with 2 sets of crossovers or lp/hp filters....but I've only played with phoenix gold, JL, and PPI and really paid attention.....as far as the xtant amp, they used to make a 5 channel....when I first got into car audio, a guy at Tweeter tried selling me one.....I just looked on their site, and they dont have one now....but I know they used to. A 1.8 volt preout is really weak....if he ever wants to upgrade his system, that just wont push the volts he needs. If he ever plans on upgrading from the entry entry level stuff, he needs at least 4 volts.

Not trying to flame, but isnt lightning audio like a best buy/wallmart brand?

-Mystic