Just bad design? Or is it hurt or damaged?

In other words it has an audible 'pop' when it's powered down from the
remote ON signal provided by the head unit.

Previously another amp in the same setup had no pop- I'm thinking it's
case of a badly designed amp.


TBerk

In article ,
T wrote:

Just bad design? Or is it hurt or damaged?

In other words it has an audible 'pop' when it's powered down from the
remote ON signal provided by the head unit.

Previously another amp in the same setup had no pop- I'm thinking it's
case of a badly designed amp.


TBerk

It could be a *marginal* design, in other words it was designed to work
under normal conditions. Different cars have different variables
electrically. Also its just a car, not exactly an earth ground.

hth,

--
Cyrus

*coughcasaucedoprodigynetcough*

In article ,
T wrote:

Just bad design? Or is it hurt or damaged?

In other words it has an audible 'pop' when it's powered down from the
remote ON signal provided by the head unit.

Previously another amp in the same setup had no pop- I'm thinking it's
case of a badly designed amp.


TBerk

Try disconnecting the remote power line while leaving the HU on. That
will tell you where the pop comes from.

It's caused by a bad design. If the audio signal is referenced to
different signal grounds in different circuits, noise enters the
circuit. Cheap car audio usually has a signal ground at 6V that
suddenly drops when the power is cut. If another component has another
signal ground, there will be a mismatch during power-off and you get a
thump. Good audio equipment will either use a 0V signal ground (with a
balanced power supply) or it will have a muting circuit that activates
before powering off.

I think its a problem with your headunit, does the popping happen when you
change the preset setting equiliser?


"Kevin McMurtrie" wrote in message
...
In article ,
T wrote:

Just bad design? Or is it hurt or damaged?

In other words it has an audible 'pop' when it's powered down from the
remote ON signal provided by the head unit.

Previously another amp in the same setup had no pop- I'm thinking it's
case of a badly designed amp.


TBerk

Try disconnecting the remote power line while leaving the HU on. That
will tell you where the pop comes from.

It's caused by a bad design. If the audio signal is referenced to
different signal grounds in different circuits, noise enters the
circuit. Cheap car audio usually has a signal ground at 6V that
suddenly drops when the power is cut. If another component has another
signal ground, there will be a mismatch during power-off and you get a
thump. Good audio equipment will either use a 0V signal ground (with a
balanced power supply) or it will have a muting circuit that activates
before powering off.