Hi JT5,
Perry did some research. There is a proper cable to use RCA inputs for your amplifier that should have come with it. It is possible you may also find it on Amazon or Crutchfield. Have a look around, you may have that cable already.
Perry did some research. There is a proper cable to use RCA inputs for your amplifier that should have come with it. It is possible you may also find it on Amazon or Crutchfield. Have a look around, you may have that cable already.
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Hi Perry,
Less than 1 ohms (.2 or less)
Zone A had 6.8 voltage for each speaker
Zone B had 0 voltage for each speaker.....this is the zone (speakers) I'm trying to connect the amp to.
Hi Anatech,
I will look for it today. I'm starting to think maybe I should try a different amplifier or head unit.
Which wires read 0 (0.1) ohms? L? R? +? -?
If you connect a speaker to the channel with 6.8v, does the voltage drop to 0v? It likely will.
What is the DC voltage across the input wires for the amp when the amp is connected how you had it originally and causing the noise issues? I want to know if DC is pulsing on the wires and how much, if it is.
If you connect a speaker to the channel with 6.8v, does the voltage drop to 0v? It likely will.
What is the DC voltage across the input wires for the amp when the amp is connected how you had it originally and causing the noise issues? I want to know if DC is pulsing on the wires and how much, if it is.
Hi Anatech and Perry,
I've looked for the RCA input cable for the amplifier on Amazon, reached out to Crutchfield and Sonic Electronix, and google search for a aftermarket brand. I found 1 company that sells it and it's out of stock, but the want $75.00 for it......that's not an option.
I wasn't able to go to the camper yesterday, but will go tomorrow to check the ohms and voltage.
I've been thinking about another possible solution to add additional speakers......
The stereo receiver has a line out right and left….what if I use a RCA to HDMI converter (and/or HDMI audio extractor) to connect a 110V AC soundbar (or powered speakers) and a 110V powered subwoofer to the receiver to play music … do you think this would work?
I've looked for the RCA input cable for the amplifier on Amazon, reached out to Crutchfield and Sonic Electronix, and google search for a aftermarket brand. I found 1 company that sells it and it's out of stock, but the want $75.00 for it......that's not an option.
I wasn't able to go to the camper yesterday, but will go tomorrow to check the ohms and voltage.
I've been thinking about another possible solution to add additional speakers......
The stereo receiver has a line out right and left….what if I use a RCA to HDMI converter (and/or HDMI audio extractor) to connect a 110V AC soundbar (or powered speakers) and a 110V powered subwoofer to the receiver to play music … do you think this would work?
I don't know your budget and don't know the adapters you referred to.
I was hoping that connecting a load to the input from the head unit would tame any possibly fluctuating DC on the amp that was causing the amp to do strange things. If so, it may simply take a couple of nice cheap resistors to get the amp to cooperate.
I wanted to know which wires 0 ohms to ground. The non-bridged output from the head unit is odd so I'm not taking anything for granted.
I was hoping that connecting a load to the input from the head unit would tame any possibly fluctuating DC on the amp that was causing the amp to do strange things. If so, it may simply take a couple of nice cheap resistors to get the amp to cooperate.
I wanted to know which wires 0 ohms to ground. The non-bridged output from the head unit is odd so I'm not taking anything for granted.
Small budget....would like to use the stuff I already have. I would prefer to use the amplifier instead of using the other stuff I mention.
I will check the ohms and voltage tomorrow. Thanks for your help!
I will check the ohms and voltage tomorrow. Thanks for your help!
On Sunday I checked the ohms and voltage
Ohms: Zone 1 left 4 and right 4 ohms, Zone 2 left 3 and right 4 ohms
Voltage
Last night I checked the ohms and voltage.
Ohms: Zone 1 left 4 and right 4 ohms, Zone 2 left 3.2 and right 4.1 ohms
Recorded these numbers first.
Then connected radio output to amp input.
Amp input with no radio and no amp power on and no amp output…..voltage slowly decreased to 0
Turn radio on voltage jumps to 6.25 then slowly decreased to 0
Turn radio off voltage jumps back up to 6.24 then decreases to 0
Amp outputs 0 (on and off)
Turn radio and amp on voltage spikes to 6.7 then decreases to 0
Waited 10 minutes or so and rechecked the numbers.
There is voltage when off then connect to speaker and power on voltage drops. Turn on radio connected to speaker voltage jumps up then drops to 0. Then turn off the radio voltage jumps up then drops to 0.
I checked the voltage this morning and it is all over the place….mainly zone 1 right and zone 2 right decreased to 2.60 and 5.57.
The goal is to connect zone 2 speakers and radio outputs to the amp. I also tried connecting zone 1 speakers and radio outputs to the amp and still get the same noises as I did when I connected Zone 2 speakers and radio outputs.
Ohms: Zone 1 left 4 and right 4 ohms, Zone 2 left 3 and right 4 ohms
Voltage
Last night I checked the ohms and voltage.
Ohms: Zone 1 left 4 and right 4 ohms, Zone 2 left 3.2 and right 4.1 ohms
Recorded these numbers first.
Then connected radio output to amp input.
Amp input with no radio and no amp power on and no amp output…..voltage slowly decreased to 0
Turn radio on voltage jumps to 6.25 then slowly decreased to 0
Turn radio off voltage jumps back up to 6.24 then decreases to 0
Amp outputs 0 (on and off)
Turn radio and amp on voltage spikes to 6.7 then decreases to 0
Waited 10 minutes or so and rechecked the numbers.
There is voltage when off then connect to speaker and power on voltage drops. Turn on radio connected to speaker voltage jumps up then drops to 0. Then turn off the radio voltage jumps up then drops to 0.
I checked the voltage this morning and it is all over the place….mainly zone 1 right and zone 2 right decreased to 2.60 and 5.57.
The goal is to connect zone 2 speakers and radio outputs to the amp. I also tried connecting zone 1 speakers and radio outputs to the amp and still get the same noises as I did when I connected Zone 2 speakers and radio outputs.
I don't know if you did what I was asking about the speakers on the amp input.
You see how the voltage is changing. I wanted you to connect the speakers to the same speaker wires you had feeding signal to the amp. The speakers would keep the DC drained off. Then connect another speaker to the output of the amp to see if the amp still malfunctioned without the changing voltage on the input.
You see how the voltage is changing. I wanted you to connect the speakers to the same speaker wires you had feeding signal to the amp. The speakers would keep the DC drained off. Then connect another speaker to the output of the amp to see if the amp still malfunctioned without the changing voltage on the input.
Like this? Speaker #1 is connected to the HU speaker output and amp input
Speaker 2 is only connected to amp out put.
Speaker 2 is only connected to amp out put.
Yes but if you have only 2 speakers, only connect signal to the input that has the speaker loading it. It would be a more reliable test with two inputs but if you only have two speakers (one on the input and one on the output) do it with only one channel.
I have 4 speakers so I can do this for 2 channels at the same time just like the diagram below for each channel
Wasn't it popping and doing other strange things? Is all of that still happening?
With nothing connected to the head unit's speaker wires, did any read 0 ohms to ground?
When you had the speakers loading the output of the head unit, while the head unit was connected to the amp, did you hear the 'noise' that you get from the output of the amp from the speakers before the amp?
With nothing connected to the head unit's speaker wires, did any read 0 ohms to ground?
When you had the speakers loading the output of the head unit, while the head unit was connected to the amp, did you hear the 'noise' that you get from the output of the amp from the speakers before the amp?
No loud popping noises now when I mute or turn the volume down to 0. Halfway there....still have the static noises.
I do not hear any noises/static from the speakers that are connected to the head unit output while connected to the amp input
I do not get an ohms reading when nothing is connected to the head unit speaker wires...wires are disconnected
When amp is connected....Reading at head unit output speaker wires when.....
Radio off to ground
Radio on to ground
Radio on and connected to speaker positive and negative wires
Radio off and connected to speaker positive and negative wires
I do not hear any noises/static from the speakers that are connected to the head unit output while connected to the amp input
I do not get an ohms reading when nothing is connected to the head unit speaker wires...wires are disconnected
When amp is connected....Reading at head unit output speaker wires when.....
Radio off to ground
Radio on to ground
Radio on and connected to speaker positive and negative wires
Radio off and connected to speaker positive and negative wires
I'm sitting back letting Perry lead this.
What I would suggest is to sit back and do some thinking, and test exactly how Perry recommended. That allows Perry to troubleshoot properly. So don't get creative, please test exactly as Perry has asked. Jumping to conclusions will not help.
What I would suggest is to sit back and do some thinking, and test exactly how Perry recommended. That allows Perry to troubleshoot properly. So don't get creative, please test exactly as Perry has asked. Jumping to conclusions will not help.
Unless I missed something... I'm stumped that you didn't read any ground connections on the speaker output of the head unit but all speaker wires were pulled to 0v with the speaker connected to the head unit output wires.
The noise you have may be the head unit defaulting to a preamp-level gain level (thinking it's receiving a signal from RCA jacks). Does the output of the amp get really loud at a relatively low volume?
Does the amp work any differently if you turn the head unit on, let the voltages drop to 0v and then apply remote voltage?
The noise you have may be the head unit defaulting to a preamp-level gain level (thinking it's receiving a signal from RCA jacks). Does the output of the amp get really loud at a relatively low volume?
Does the amp work any differently if you turn the head unit on, let the voltages drop to 0v and then apply remote voltage?