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How to: Installing an Amp power cable Directly from your battery.

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amp subwoofer
80K views 136 replies 31 participants last post by  Silly billy  
Hi Abzy, As you're reusing equipment, I'm sure you want the cheapest solution.
1 - Check all connections again, ensure ground point is clean (sand it a little to be sure)
Min 12v on power in, ensure you have 12v on the remote (loop to 12V constant to test - don't leave it like this !!!!)
2. the Sub won't cause the amp to not power up unless shorted. Remove the sub from teh enclosure and disconnect. Try and start the amp - Voice coils can short or a short in the connection itself. Test the sub + to - with a multimeter. If amp powers up without the sub to a quick test with any 4/2Ohm speaker. If it works a cheap 12" sub is all you'll need instead of replacing the entire box..

Manual-
http://edgecaraudio.co.uk/manuals/edb_active_manuals.pdf
 
@Abzy, Check AMP is powering up, do you have constant 12V and Switched remote @12v when HU is powered? Source for remote - is ignition on required? If AMP is powering up, turn off all Crossovers/Filters on amp and max gain - still nothing, check source - have you connected the AMP1 output correctly and in phase - disconnect left RCA, reconnect and disconnect Right RCA(or adjust balance on HU) If you have sound in either circumstance then phase issue. after that - amp and sub OK in their own right, get a different external source (ipod with RCAs) for example and try again......
 
@Abzy, Just disconnect one side of the battery, Positive is fine, just be sure to secure the lead away from the terminal to spot any risk of accidental connection while you work, as for the rear seat - http://www.saabcentral.com/forums/showthread.php?t=140374 , as in the thread, lift up rear part of the seat squab (at belts), the front is held on by two large clips that take a fair bit of force to come free, long screwdriver to lever from front worked best for me.. Taking out front seat is straight forward, but heavy, Its easier to work with it out..
 
@ABZY, There is only the one screw, There are two protuding brackets in the amp that secure into recesses nearest the door. Remove the screw, lift teh amo slightly and pull away from the door. Be careful, the wiring is very short!. I foind that removing the plastic kick trim allows lifting the carpet to get better access to the wires for soldering LOC (You'll need to remove anyway to route cables to the trunk..