Almost certainly a single processor of some kind, possibly a PIC type device.
There's a difference between just resetting a device by removing power (which works instantly, you just unplug it, wait a few seconds and then power up again) and devices that really 'lock' for whatever reason. They are the ones that need to be left. I think your problem is the former, it just needed 'rebooting'.
A simple crossover usually gives an easy load. A complex crossover has several large inductors and caps to get the desired characteristics but these can be classed as 'difficult' loads with low impedance at certain frequencies.
There's a difference between just resetting a device by removing power (which works instantly, you just unplug it, wait a few seconds and then power up again) and devices that really 'lock' for whatever reason. They are the ones that need to be left. I think your problem is the former, it just needed 'rebooting'.
A simple crossover usually gives an easy load. A complex crossover has several large inductors and caps to get the desired characteristics but these can be classed as 'difficult' loads with low impedance at certain frequencies.
If you are turning down the amp before turning it off then the amp is probably remembering that level for when its powered on again.
Not remembering was kind of the issue Nigel, i always turned it down by the same amount ... so at my normal listening level by a complete 360 plus another quarter turn. Upon turning on again it was like the " memory " had changed needing a full 360 plus another quarter then yet another 180 to get the volume i had used previously if that makes sense . Since re booting it seems fine though but i'll never buy an amp with rotary encoders ever again.
I have written software for rotary encoders.
It just puts out two signals 90 degrees out of phase if I remember right.
The ones I worked on were in a cooker for selection of options and temperature etc.
The software remembered the settings and changed them up or down according to how far encoder turned.
It just puts out two signals 90 degrees out of phase if I remember right.
The ones I worked on were in a cooker for selection of options and temperature etc.
The software remembered the settings and changed them up or down according to how far encoder turned.
Its likely it stores the level in a non-volatile memory chip.
Could be its at the end of its life. They only last so many cycles.
Could be its at the end of its life. They only last so many cycles.
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