Amplifier I own a car that, one of the speakers work loud and the other you can barely hear. One day I was sitting in my car and noticed that the music shifted from the speaker that worked to the speaker that didn't work and now the music is barely heard. It sounds as if it has a lot of treble. Is this the amplifier's fault or the speaker?
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I GUESS that the speakers are driven by an after market amplifier. An amplifier needs to be connected to a power source that is only on when the radio is on, through a relay.
Assuming this applies to all the speakers in the TrailBlazer, you likely have an amplifier transistor in the radio going bad. When they occasionally work, or you get a "crackling" sound it is usually the amp. A slim possibility is a bad ground, but that usually won't affect all speakers, only one.
You're probably overdriving the amplifier, meaning the speakers are sucking up more power than the amplifier is capable of. When you turn it up loud it overheats and causes the system to go into a protect mode so it doesn't catch on fire (yes... it happens!). Make sure your system is capable of handling the power needs of your speakers. And don't burn your house down! I had a high-end Harmon-Kardon receiver burst into flames. It's a good thing I was standing next to it or my house would have been toast.
Onkyo receivers have a safety circuit in them to protect the Amplifier from blowing up:
If you listen closely when it shuts down ( after a loud scene ) there is likely a loud 'Relay Click'..
If this is what is happening you might be able to verify it by turning the volume all the way 'off' and waiting for the circuit ro reset ( releasing the safety relays & returning power to the internal Amplifier ) : you should hear another click, yhen you can bring the volume back up carefully and there will be sound again.
This safety circuit trips when then Onkyo receiver detects an 'Over Current' condition on the ' Power Supply ' that feeds the internal 'Audio Amplifier'..
Generally caused by:
1. Improper load presented to the Amp outputs ( FL, LR, RL, RR, SUB, CENTER )
If you can ( one at a time ) turn off the SUB, Center, Fronts and Rears: trying to re-create the failure each time while you have one part of your system disabled or having their level turned way down..
You can isolate where the problem is coming from.
- any or all of these speakers being the wrong Impedence( I.E. 4 Ohms instead of 8 Ohms ) Unless the receiver manual or the sticker near the 'speaker connetor' specifies a range or another value, you should assume 8 Ohms. Your speakers should say on the back of them.
- any of the speakers being connected in parallel ( 2 speakers to a single one speaker output ) .. Two 8 Ohm speakers connected in parallel make a 4 Ohm load to the amplifier.
- If the Suwoofer is Passive ( Not having its own power cord and amplifer ) it has a Passive Crossover : this crossover can have its own power rating or limitation.. If it is constructed with capacitors that have too low of a working voltage, then they can saturate and the crossover itself can present a load to the amplifier that will case this 'Over Current Shut-Down'..
Fan comes on with temperature rise. Not a problem if off till you start driving speakers loud.
Make sure standby switch is up. The slide switch is up to A/B.
The main fader iis up. Your input fader(s) are up. The trim controls are up enough. Inputs are plugged to input and not the inserts.
Be careful... this unit has a lot of power and can blow speakers.
If you have a surround sound system, (amplifier and speakers), run the DVD speakers out wires to the amplifier IN. Thi way, you don't even need the TV speakers.
how did u wire the speaker ?what is the speaker rated at 2 ohm or 4ohm? thees kicker l7s 15 inch is rated for 1000 rms and 2000 peak the only thing that could of hapend was somthing was touching some were in the wiring or u hade the speaker wired at a load of 1 ohm
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