subwoofers
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=79896
Printed Date: May 16, 2025 at 5:33 AM
Topic: subwoofers
Posted By: wastedteenyears
Subject: subwoofers
Date Posted: July 03, 2006 at 7:29 PM
i got 2 questions. and im sorry that i dont have more information.. but if nessacary ill get it all. 1. this is in a 94 jeep cherokee. i have the amp and subs all installed. but even after i shut uff the care and take the key out the amp doesnt shut off. on the head unit i saw 2 wires that i thought i could us. one labled ACC and the other was label 12Volt. right now i have the remote power hooked up to the 12volt. i thought i was sopposed to hook it up the ACC line but the amp doesnt power on at all. any one got any ideas on what i can do or try.. 2. also the person im setting up for doesnt have any manuals so i cant check all the specs.. but when he bought he sadi the spakers should be able to handle the amp. but when ever i turn up bass it starts to make almost like a slapping noise.. as if you had your hand on the woofer while it was going.. its fine when i dont trun it up.. but the amp is alpine and he spent lose to a grand on it and my doodiety fast and the furious crap subs hit far harder then these ones do. so that doesnt seem right.. id appreciate any help. thanks
Replies:
Posted By: geepherder
Date Posted: July 03, 2006 at 7:44 PM
1. If you're hooking this up to a factory system, you should use the accessory lead for the amp turn on- that way the amp will only be on when the key is turned. As it is now, the amp is constantly draining the battery. You need to test the wire you connect this to with a multimeter and make sure it is infact an accessory lead, and has 12 volts only when the key is turned. If you're hooking this up to an aftermarket deck, use the remote turn on wire in the harness. 2. It sounds like you're letting the subs "bottom out" and reach their mechanical limits. This can quickly destroy them. You may have the gain set wrong (do a search here), or simply an equipment mismatch. If you're using a factory deck, are you using a line out converter to get signal instead of the high level inputs on the deck- you should be. Another possibility is the subs are in an enclosure way too big. What kind of box are they in (sealed/ported)? Is it built to factory spec, or were the subs just thrown into a premade box (not necessarily to the size they call for)? ------------- My ex once told me I have a perfect face for radio.
Posted By: wastedteenyears
Date Posted: July 04, 2006 at 11:02 AM
im hooking it up to a pioneer deh-11. and the amp is a mrd-m605 i think.. its a mono amp and i gues its tested at 633 watts. its going into memphis ms124d sub woofers. its says that they rated for 400 watts max. is the amp to power full. also im still haveing the trouble with the remote power. i tried looking up the wiring diagrams here put its wasnt right. there different colored wires in the car.
Posted By: geepherder
Date Posted: July 04, 2006 at 11:54 AM
That 600 watts is at 2 ohms. I can't find any specs on your subs, are the dual or single voice coil? How many ohms (2 or 4 ohms per coil)? What is their rms power handling rating (forget max)? How do you have them wired? Like I said above, use a meter to test for the accessory wire. ------------- My ex once told me I have a perfect face for radio.
Posted By: wastedteenyears
Date Posted: July 04, 2006 at 6:36 PM
well i know there dual coil. i dont know the rms on the amp.. but i think i really messed something up.. i have no idea what i could have done. all i did was unhook all the wires. and try to hide them. the amp wasnt hooked up the battery at all. and when i was running them the wire wasnt hooked up to the battery at all.. the remote wire was still hooked up to the head unit on the constant 12v. but even when i w s running them i have he exposed wire covered. and now the head unit wont turn on.. the ac and ventalation wont work. the lights are dime or flicker. locks dont work.. bu t the windows still do, the little trip computer still does.. i pulled all fuses and none where blown. and when the doors are open it contiously clicks even withthe key out.. never stopped even when i pulled every fuses.. some one please help!!!
Posted By: bdl666
Date Posted: July 04, 2006 at 7:16 PM
I think is time your friend takes his car to a local shop.
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ieSpell rocks.
Posted By: geepherder
Date Posted: July 05, 2006 at 6:18 AM
It sounds like you let the constant lead touch ground, and blow a fuse. If you didn't unhook it from the deck, you should have at least taped it off. Did you only check the fuses inside the car, or did you check under the hood as well? Be sure to test them with a meter. Otherwise, take it to a shop like stated above.
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My ex once told me I have a perfect face for radio.
Posted By: wastedteenyears
Date Posted: July 05, 2006 at 7:39 AM
yeah i think the constant lead did end up touching it..i hate how when you get wized off and just start loving around how i forget such simple precautions. i did check the fuses underthe hood too. and i didnt test them with a meter just visually. do you think i could have done more damage then just a blown fuse?
Posted By: xtremej
Date Posted: July 05, 2006 at 9:33 AM
Its possible. Not trying to hurt your feelings, but from what I've read from your posts I think the best thing you could do is have your friend take this to a local audio shop. They may not want to be friends if you burn their jeep down.
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Posted By: wastedteenyears
Date Posted: July 05, 2006 at 9:57 AM
no i agree.. i plan of having him taking it to a shop no.. i know im a newbie and ive done a couple installs with no prob but ive issues with this since day one.. i just not know if was possible to mess it up any more or if a fue would pervent it.. i just kinda wanted to have an idea so i that i might be able to get an idea what hes into. im gonna be the one apying for it at a shop.. so i just didnt know if i could have majorly messed up the eletrical system.
Posted By: xtremej
Date Posted: July 05, 2006 at 11:09 AM
I doubt it messed anything up to severe. If you meter all fuses in the vehicle I bet you would find something blown for the accesories that aren't working.
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Posted By: geepherder
Date Posted: July 05, 2006 at 10:02 PM
Yeah, it wouldn't hurt to double check your fuses with a meter. It's rare, but on occasion you can run into a fuse that looks okay visually, but is actually blown.
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My ex once told me I have a perfect face for radio.
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