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Unread 07-07-2008, 09:25 PM   #1
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Default Speaker advice

So i finally got my car on the road (1993 VW Passat Sedan - Pics coming soon ) and im currently half way upgrading the sound system. Considering this car cost me $500 im not looking to spend intense amounts of money on my sound system, i already have a head unit- An Alpine CDA-9813 i bought off a co-worker for $50, and i got a pair of Alpine SPS 400 4" speakers for my bday, the car can currently take 2 4" speakers in the dash, 2 4" speakers in the front doors and the back shelf can handle 2 6.5" speakers, im not looking at buying a sub yet but there is PLENTY of room in the trunk for at least 4 10" subs

So my question is.... Can i connect a pair of the 4" speakers to an output on a 4 channel amp in series or is a parallel configuration better? Im guessing this will work as the 4" speakers are only 45W RMS each (140W peak), so to simplify i will be connecting 4 speakers to two outputs on a 4ch Amplifier, obviously i will require a higher end amp to do this, which im looking at spending about $250 - $300 on, the other 2 outputs will be for the rear speakers on the shelf which again im still to decide upon (advice is welcome)

As usual +reps to all helpful answers

Last edited by Armadi110; 07-07-2008 at 11:41 PM.

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Unread 07-08-2008, 08:19 AM   #2
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Well technically the front speakers, all 3 of them on each side count as one. It should be a component system. I didnt think they were 3 way, but hey w/e. The 4" in the door is probably just a bass driver, or woofer, the 4" in the dash is the mid range, and then you should have a tweeter either on the pillar or the mirror cover on the doors up front. All of these speakers work together as one. Without on speaker they will sound naked and some sounds and frequencies will be missing in your music. There should just be one single input to all of the speakers, whether its in the door or not i dont know... Infact i bet the crossover is all done in the factory amp, so that means you would need a new set of crossovers or to just replace the 3 way system with your own...

Personally i dont like any fill from the rear, so if anything i would just place some 6.5" mids on the rear deck. Leave the music and sound to come at you from the front stage.

To answer the original question about how to wire them together, you will have to test what impedance (ohm) each speaker is at and figure how to wire them to best match your amp. Most amps will be stable down to 2ohm per channel. So for that it would probably be a series/parallel connection.
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Last edited by pbasil1; 07-08-2008 at 08:21 AM.

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Unread 07-08-2008, 04:52 PM   #3
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Well im definitely getting all coaxial speakers as i really cant be bothered to try and set up component speakers around the car, but you say i can set the speakers up using a crossover, how does that exactly work??

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