ok, confusing.
yesterday, i had humming in my subs, once again....well i thought, ground loop, looked for it for about an hour, couldnt find any bare or shorted wires...forgot about it. gave up whatever you want to call it. so...i go out there this morning, the humming is gone, completely...kinda odd. but now, i turn my volume up, and my amp turns off. it wasnt doing this before the humming started, its been hooked up this way for say 5 months with no problems, all of a sudden outta nowhere i have another problem on my hands, the amp hasnt been tweaked on or messed around with, everythings been the same. any ideas ? i know it has something to do with the omage, but why work for 5 months then quit all of a sudden? i swear my wires in my truck have a mind of their own and are borderline human. lol
-KP
Replies (6)
Tinker18 on 10/1/2004 19:24:24
afterthought-----my speaks in the front have 2 negs and 2 posi, if i accidently pulled, say one wire loose....where only 3 are hooked up, could that have changed the omage enough for the amp to be unstable and shut off at high volume? gonna go check it out now, just a thought.
-----checked it out, wire was loose, hooked it back up, helped some, now i can turn it all the way up, but after around 20 seconds the amp shuts off again. what the heck is going on here.
swez on 10/1/2004 21:01:45
Sounds like amp is going into protect mode for some reason. Take its' temperature first. If you note it to be unduely warm, its thermal protect circuits are activation for some reason. (probably too low ohmic load on the amp)
Can you review what amp you have and what is connected to the outputs and how are the drivers (speakers) connected. Then we can probably make some recommendations to resolve it.
Swez
PS Wires do have a mind of their own... especially the female connections. (grounds and female RCA sockets) SMILE
Tinker18 on 10/1/2004 21:22:28
its just a cheap 4 channel sony amp, i have it in there till i can get enough money or take the time to get one better. front speakers are 3 ohm orions, back are 4 ohm cant recall the name at the moment. all are wired directly to the speaker outs, except for the rear two speakers, i wired them in parallel, not sure why but it worked for like 5 months then quit all of a sudden. i dunno, i think im jsut gonna go out there and rewire it all, and hope it fixes it lol
swez on 10/1/2004 21:45:06
The front stage Orions sound fine. The rear speakers would be OK at 2 ohms off a single channel. But if you have them in parallel and bridged the rear amp channels... a 2 ohm load is going to make that amp work very hard at high output... go into thermal protect mode too. Change that asap.
Best to have 1 speaker to each amp here. (LF,RF,LR,RR) If you have a sub or two, then a separate amp for the sub(s) is the best way to go. Yes, can use the 4 channel as a sub amp if you like. Most use the rfear channels bridged for more power, but you need a min of 4 ohms loading to do this. If less than 4 ohms, the subs will draw too much current and the amp will go thermal on you.
Am a bit confused as to all you have going here. Please clarify all gear installed so we have a better picture of how to advise you.
Swez
Tinker18 on 10/2/2004 01:16:30
no need too swez, as usual, I am the cause of my own problems. I started thinking, was talking to my gramps and he said something hes told me all my life, he said "the most puzzling questions usually have the most simplistic answers" so i started thinking, what would be the most simple problem..a bare wire naturally popped in my head, so i took my dash cover off, and VOILA! i had missed a wire behind the wire harness, i forgot to cap it, and it was touching another speaker lead, so i capped it off, and no more amp shutting off.....that kinda thing makes you feel smart at the end of the day.
-KP
swez on 10/2/2004 08:22:02
Mission accomplished.... your grand dad is a wise man!
Swez
yesterday, i had humming in my subs, once again....well i thought, ground loop, looked for it for about an hour, couldnt find any bare or shorted wires...forgot about it. gave up whatever you want to call it. so...i go out there this morning, the humming is gone, completely...kinda odd. but now, i turn my volume up, and my amp turns off. it wasnt doing this before the humming started, its been hooked up this way for say 5 months with no problems, all of a sudden outta nowhere i have another problem on my hands, the amp hasnt been tweaked on or messed around with, everythings been the same. any ideas ? i know it has something to do with the omage, but why work for 5 months then quit all of a sudden? i swear my wires in my truck have a mind of their own and are borderline human. lol
-KP
Replies (6)
Tinker18 on 10/1/2004 19:24:24
afterthought-----my speaks in the front have 2 negs and 2 posi, if i accidently pulled, say one wire loose....where only 3 are hooked up, could that have changed the omage enough for the amp to be unstable and shut off at high volume? gonna go check it out now, just a thought.
-----checked it out, wire was loose, hooked it back up, helped some, now i can turn it all the way up, but after around 20 seconds the amp shuts off again. what the heck is going on here.
swez on 10/1/2004 21:01:45
Sounds like amp is going into protect mode for some reason. Take its' temperature first. If you note it to be unduely warm, its thermal protect circuits are activation for some reason. (probably too low ohmic load on the amp)
Can you review what amp you have and what is connected to the outputs and how are the drivers (speakers) connected. Then we can probably make some recommendations to resolve it.
Swez
PS Wires do have a mind of their own... especially the female connections. (grounds and female RCA sockets) SMILE
Tinker18 on 10/1/2004 21:22:28
its just a cheap 4 channel sony amp, i have it in there till i can get enough money or take the time to get one better. front speakers are 3 ohm orions, back are 4 ohm cant recall the name at the moment. all are wired directly to the speaker outs, except for the rear two speakers, i wired them in parallel, not sure why but it worked for like 5 months then quit all of a sudden. i dunno, i think im jsut gonna go out there and rewire it all, and hope it fixes it lol
swez on 10/1/2004 21:45:06
The front stage Orions sound fine. The rear speakers would be OK at 2 ohms off a single channel. But if you have them in parallel and bridged the rear amp channels... a 2 ohm load is going to make that amp work very hard at high output... go into thermal protect mode too. Change that asap.
Best to have 1 speaker to each amp here. (LF,RF,LR,RR) If you have a sub or two, then a separate amp for the sub(s) is the best way to go. Yes, can use the 4 channel as a sub amp if you like. Most use the rfear channels bridged for more power, but you need a min of 4 ohms loading to do this. If less than 4 ohms, the subs will draw too much current and the amp will go thermal on you.
Am a bit confused as to all you have going here. Please clarify all gear installed so we have a better picture of how to advise you.
Swez
Tinker18 on 10/2/2004 01:16:30
no need too swez, as usual, I am the cause of my own problems. I started thinking, was talking to my gramps and he said something hes told me all my life, he said "the most puzzling questions usually have the most simplistic answers" so i started thinking, what would be the most simple problem..a bare wire naturally popped in my head, so i took my dash cover off, and VOILA! i had missed a wire behind the wire harness, i forgot to cap it, and it was touching another speaker lead, so i capped it off, and no more amp shutting off.....that kinda thing makes you feel smart at the end of the day.
-KP
swez on 10/2/2004 08:22:02
Mission accomplished.... your grand dad is a wise man!
Swez
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