I use an N Audio Amp switcher which has a switchable attenuator loop. This allows me to compare the amp direct to cab sound with the PS100 power amp to cab sound just by engaging and disengaging the attenuator loop. It’s a handy feature.
I noticed that when the PS100 is turned off and in standby mode when I switch in the loop it seems to act like the ps100 is fully bypassed and the amp is sent direct to the cab. I also notice that the PS100 line out is active and a signal is present.
Is this normal behaviour and do I assume the line out is always tapping an amplifier signal coming into the ps100?
Is this the same line out signal I would get with the PS100 turned on and in operate mode and powering the cab directly with its internal power amp?
Or is the line out in this powered on / operate scenario tapping the reactive load output and not the amp input?
Nice detective work, thanks for the easy-to-follow description.
On the bypass/standby behaviour: Yes, that’s normal. When the PS-100 is powered on and in standby/bypass mode with AMP IN and SPKR OUT connected, your amp’s signal passes directly through to the speaker cab.
Line out: yes, the line out is passive and will always work. Exactly, Line Out is tapped from Amp In and provides a line-level version of your amp’s raw output signal + reactive load interactions. There are a number of features on the back of the PS-100 that work with no power in “Silent mode”:
I noticed when powered off and in operate mode it also passes through the amp signal back to the cab. As soon as the power is turned on the power amp takes over the cab signal.
Just to clarify is the line out signal always the same whether the ps100 is off and in pass through versus being on with the power amp engaged?
