Stereo

General discussion forum for J30 and M30 owners!
Stone Cold
Posts: 28
Joined: Sat Feb 10, 2007 4:37 pm

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Just a little info you everyone. I bought everything needed to swap in a aftermarket headunit utilizing the stock amp/speakers. Don't remember part numbers but it was all Scoshe.Happy hunting-I'm finally jammin


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Defiant
Posts: 495
Joined: Sun Jul 09, 2006 4:26 am
Car: 1997 J30
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Scosche OEA-4, in case someone, sometime, might actually use the search.

Stone Cold
Posts: 28
Joined: Sat Feb 10, 2007 4:37 pm

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FAI-3a Scosche is the one they sell at Walmart. It has a little more flexability than the OEA4 Same thing but different.

doctorl
Posts: 11
Joined: Fri Mar 23, 2007 4:49 am
Car: 1993 J30 Black

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Did you do the swap yet?

I bought everything from Crutchfield except the OEA4, instead I purchased the FAI 3a from WalMart. A couple of notes:

In order to get the terminal strips on the FAI 3a to hold the wires tightly, I had to "tin" the wire ends with solder. Otherwise the screws smash the multistrand wire and the wires want to come loose.

Everything was color-coded, so the hookup from the Sony receiver to the Nissan harness adapter with the FAI 3a in between was straightforward.

The only surprise I had was in order to get the same volume out of the rear speakers as I get out of the front ones I needed to crank the "Factory Amp Gain" up all the way for the rears. I would have thought that it would be more evenly balanced. No obvious distortion at listening volume, but I'm wondering if both back amps are blown or not getting power for some reason, and I'm just driving the back speakers with the receivers' internal amp. Fuses OK.

When you install a new receiver there is no place to plug in the DIN plug that used to plug into the back of the OEM head unit. Does anybody know what it is for?

Any ideas on the rear speaker situation?

Stone Cold
Posts: 28
Joined: Sat Feb 10, 2007 4:37 pm

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I think when I did mine that the rears were close to the fronts. Don't remember. I think the DIN plug is for the factory CD changer.

cbtegner
Posts: 15
Joined: Sat Feb 10, 2007 1:38 pm
Car: 1993 Infiniti J30

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A few years ago i had a stereo put in my 93 J30 which was a pain in the *** b/c of the fuel tank in back. Ive made some mods since then but im rolling with 3 JLw6 12's, 1 PPI A-600 amp for subs, 1 four channel PPI amp for custom mids, 2 farad capacitor, and a bleapunkt head unit. The stuff was all bought on ebay piece by piece and with exception to the head unit the stereo is probably 10 or more years old, but man I have yet to hear anyone come close to the amound of bass and clean sound that comes out of that car. Until i get another car Im going with my custom old school system.

doctorl
Posts: 11
Joined: Fri Mar 23, 2007 4:49 am
Car: 1993 J30 Black

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In response to my question Dane from Zmaxsystems says:

"Anyway, many Clarion built Nissan decks have full output to the rear (9V) with 4V output to the front. I am assuming your car is the same way. It would make sense if that is so since the 89-94 Maxima has the exact same size speakers front and rear as the J30. If so, the rear amps would be attenuated, therefore requiring more input to gain the same output."

The rear speakers are just 6 x 9s with paper cones, and the OEM Bose amps – since the adapter has individual gain controls I may just get decent quality 6 x 9s for the rear, bypass the adapter for those two speakers only, and let the aftermarket receiver drive them directly. I can continue to use the adapter to drive the front pair with their individual amps until those amps go, at which time I can either replace w/conventional or send the amps in for repair/rebuild.

The OEM front speakers are high quality (supposedly from the Bose 901 series), so maybe that’s a reason to keep them for awhile. To my ears the fronts sound pretty good, the rears awful muddy.



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