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08-16-2006, 06:24 PM
#11
50 Watt CAFz'r
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Join Date: Aug 2006
Posts: 52
Originally Posted by crabmustang
the reason you measure lower at the amplifier is because of the speaker impedance and the amplifier have impedence built in, you need to unhook speaker from amp to measure correctly...if you have 4 ohms at the end of wire at amp your good to go.
If it cuts out at 3/4 volume your amp gain is to high or your speakers are bottoming out due to to much low frequencies going threw it.
Garett
If it cuts out at 3/4 volume your amp gain is to high or your speakers are bottoming out due to to much low frequencies going threw it.
Garett
08-16-2006, 08:36 PM
#13
50 Watt CAFz'r
Thread Starter
Join Date: Aug 2006
Posts: 52
OK! Here's a little update, it gets more and more complicated but things seems to be pointing to a faulty speaker or speaker connection. This should be a sticky because it's one hell of a rare situation.
Here's what I checked out withing the last hour.
I tried to plug every channel in the amp along a new radio I just bought, when I opened up the radio (pioneer 7800mp) I heard a loud high pitch tone coming out from the speakers so I shut down the HU, I disconnected the faulty channel and opened up the HU again, I now get a little isshh(kinda like engine noise distortion except that the engine was not running) sound at zero volume.
I assume the front preouts are damaged...
I then tested the faulty channel with another speaker, it works perfectly but the sound clips at high volumes, I suppose it is due to fact that the pre-out are damaged
I then tested the supposedly fautly speaker components on another channel and I get the same thing, A loud high pitch tone.
What conclusions can you make from theses analysis?
Can I conclude that a component speaker set could have cause my radio's pre-out to burst?
Is the amp ok?
Here's what I checked out withing the last hour.
I tried to plug every channel in the amp along a new radio I just bought, when I opened up the radio (pioneer 7800mp) I heard a loud high pitch tone coming out from the speakers so I shut down the HU, I disconnected the faulty channel and opened up the HU again, I now get a little isshh(kinda like engine noise distortion except that the engine was not running) sound at zero volume.
I assume the front preouts are damaged...
I then tested the faulty channel with another speaker, it works perfectly but the sound clips at high volumes, I suppose it is due to fact that the pre-out are damaged
I then tested the supposedly fautly speaker components on another channel and I get the same thing, A loud high pitch tone.
What conclusions can you make from theses analysis?
Can I conclude that a component speaker set could have cause my radio's pre-out to burst?
Is the amp ok?
Last edited by krsolutions; 08-16-2006 at 08:38 PM.
08-16-2006, 09:35 PM
#14
I heard a loud high pitch tone coming out from the speakers so I shut down the HU, I disconnected the faulty channel and opened up the HU again, I now get a little isshh(kinda like engine noise distortion except that the engine was not running) sound at zero volume.
you have more going on
can you tell us how you have your set-up
like the
+ power wire is next to the rca's or that the power is on one side and the rca's are on the other side
how is the amp (-) to the ?
how is the deck (-) to the ?
where is the rca"s ?
where are the -/+ wires ?
you have more going on
can you tell us how you have your set-up
like the
+ power wire is next to the rca's or that the power is on one side and the rca's are on the other side
how is the amp (-) to the ?
how is the deck (-) to the ?
where is the rca"s ?
where are the -/+ wires ?
08-16-2006, 09:42 PM
#15
50 Watt CAFz'r
Thread Starter
Join Date: Aug 2006
Posts: 52
Originally Posted by zzzzzzz
I heard a loud high pitch tone coming out from the speakers so I shut down the HU, I disconnected the faulty channel and opened up the HU again, I now get a little isshh(kinda like engine noise distortion except that the engine was not running) sound at zero volume.
you have more going on
can you tell us how you have your set-up
like the
+ power wire is next to the rca's or that the power is on one side and the rca's are on the other side
how is the amp (-) to the ?
how is the deck (-) to the ?
where is the rca"s ?
where are the -/+ wires ?
you have more going on
can you tell us how you have your set-up
like the
+ power wire is next to the rca's or that the power is on one side and the rca's are on the other side
how is the amp (-) to the ?
how is the deck (-) to the ?
where is the rca"s ?
where are the -/+ wires ?
amp - is a 4 AWG to a distribution block, distribution to trunk ground with a 2 AWG
the negative on the deck is also using the car's chassis.
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