so yea as it says in the title old sub is broken and i have an old sony 8inch 4ohm subwoofer ,
thank u
thank u
Welcome to the forum!
3 ohm is not a standard nominal impedance for a subwoofer.
You may have measured the DC resistance of the sub with an ohmmeter, in which case the 3 ohm reading indicates a 4 ohm nominal impedance.
3 ohm is not a standard nominal impedance for a subwoofer.
You may have measured the DC resistance of the sub with an ohmmeter, in which case the 3 ohm reading indicates a 4 ohm nominal impedance.
I don't know anything about actual impedance.
On the original subwoofer its written 3ohm
And on old one it's 4ohm..
What's correct way to check impedance
On the original subwoofer its written 3ohm
And on old one it's 4ohm..
What's correct way to check impedance
The 4 ohm will substitute for the 3 ohm as far as impedance goes, so you are OK to give it a try.
Impedance varies with frequency anyway and is not a fixed quantity. That is why, e.g., 4 ohm is only a "nominal" figure.
Measuring impedance is a more complicated procedure than simply measuring resistance with an ohmmeter, and isn't necessary in your case.
Impedance varies with frequency anyway and is not a fixed quantity. That is why, e.g., 4 ohm is only a "nominal" figure.
Measuring impedance is a more complicated procedure than simply measuring resistance with an ohmmeter, and isn't necessary in your case.
Iam little concerned about the amp exploding
I have a previous model with 6ohm subwoofer
I connected this (4ohm old sony) sun
The Class D amp chip exploded .
It was not over heating , it shorted .
I don't want to happen again ...
Either I'll get a 8 ohm sub or use the old sony sub
Iam hoping this time
The 4ohm sun won't hurt 3ohm amp ..
Does lowering power to -1db or -4 db reduce the probability
I have a previous model with 6ohm subwoofer
I connected this (4ohm old sony) sun
The Class D amp chip exploded .
It was not over heating , it shorted .
I don't want to happen again ...
Either I'll get a 8 ohm sub or use the old sony sub
Iam hoping this time
The 4ohm sun won't hurt 3ohm amp ..
Does lowering power to -1db or -4 db reduce the probability
A speaker of higher impedance keeps the peak currents low and is therefore less likely to damage a Class D amplifier.
Similarly, lowering the dB level also helps protect the amplifier.
Connecting a 4 ohm subwoofer driver should be marginally safer than connecting a 3 ohm subwoofer driver.
However, for all I know, your 4 ohm driver could possibly be short circuit, explaining why it damaged your previous amplifier.
Measure the DC resistance of the 4 ohm subwoofer with an ohmmeter to eliminate that possibility.
Similarly, lowering the dB level also helps protect the amplifier.
Connecting a 4 ohm subwoofer driver should be marginally safer than connecting a 3 ohm subwoofer driver.
However, for all I know, your 4 ohm driver could possibly be short circuit, explaining why it damaged your previous amplifier.
Measure the DC resistance of the 4 ohm subwoofer with an ohmmeter to eliminate that possibility.
