I had my PA-504 hooked up to 4 speakers, one on each channel. One day a passenger told me the speaker next to her wasn't working. I tested it later and found that it was working ... but at a very low volume. When channel 1, 3 and 4 are at normal volume, channel 2 is barely audible. I have checked and re-checked all connections and they all were in order. Does anyone know what this could be? Did I blow channel 2 (even though I NEVER turn it up too loud), and is it fixable? Thanks.
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Re: Channel 2 volume is very low
You can check if channel 2 is blown by switching around your RCA plugs. If you are using the speaker wires as high power inputs you can change them. I.E. swap the left channel with the right one.
I assume you checked the gain control on the amp.
If channel 2 works with channel 3's inputs then its your head unit or the wiring.
If you are lazy take the amp to a car audio store and ask them to bench test it for you.
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First, plug it in. Next connect the speakers. Center all eq controls both master and channel. Turn off any reverb or effects. Turn the master volume 1/2 way up. Plug a sound source into channel 1 wiyj the channel volume all the way off. Turn on the amp. Slowly raise the channel volume until you heat output. If you get nothing, it's broken.
Voice tracks are usually routed to the center channel. You don't mention having a center channel speaker hooked up. If this is the case, then you need to go into the receivers setup menu and set it for no center. This will reroute the voice tracks to your front speakers.
yes, the amp can be used fof full range speakers. to use it a s such, the amp's "crossover" switch must be set to "off" (could also be labeled as "full-range" or "defeat").
the amp is 2 channel. 4 channel is for surround sound or to have independent front and rear channels/volumes. this 2 channel amp will support 4 speakers, but you wont be able to balance from front to back- the front and back speakers will be at the same volume all the time if both are hooked up to the amp.
your speakers are of an incorrect ohmage, or you have too many speakers hooked up to it. your stereo likely calls fo a singler 4 ohm (4?) speaker per channel and the factory speakers may be lower than 4 ohms, or you have several speakers hooked up to the same channel. there should be 4 channels, each with no less than a 4 ohm (4? ) load. two 4 ohm speakers wired to the same channel in parallel (both attached to the amp's poositive/negative leads) will create a 2 ohm (2?) load, and overheat the amp. if the 2 speakers are a woofer/tweeter combination, and there is a capacitor involved, it may be ok, but 2 woofers, or a woofer and a subwoofer hooked to the same channel will likely reduce the ohmage below 4 ohms (4?). look at the back of each woofer speaker, and look for an ohmage rating stamped to the back of the speaker magnet to verify that they are 4 ohm (4?) speakers, and verify that only a single 4 ohm speaker is hooked to each channel. the car likely has multiple speakers hooled up to each channel, which would lower the ohmage rating below 4 ohms (4?).
I'd need to know more about the amp, but don't forget, amps are rated as their max power... So lets take a 300W/channel stereo amp at 8 ohms. Ok, it's stereo, so there's 600W But the amp is capable of 4 ohm loads...well, now you can deliver 600W/channel, for a total of 1200W In this scenario, your amp is doing exactly what it was designed to do with those speakers. If you wanted to get the full 1200W out of the amp, you'd have to hook up 2 more speakers in parallel to the ones already there. This drops the impedance to 4 ohms per channel = 600W / channel. Yes, the power is split among the apeakers...300W per speaker into 4 speakers = 1200W so any way you look at it, there's your 1200W
Check your speakers and Cables. I had some speakers that traveled in my small trailer and the vibrations of the trailer caused the diaphram to back off my horns. Once I got the speakers fixed the DDT light on my power amp stopped staying on so much.