User`s manual
Troubleshooting
Problem: No signal when an amplifier (AMP1-4) is chosen:
Make sure you conneted the amps input and speaker output correctly. For instance connect AMP1
INPUT and AMP1 OUTPUT to the same connected amplifier.
Problem: No signal when switching FX loop.
Make sure the FX Loop of the chosen amplifier is connected correctly to the 444s matching FX Loop.
For example, if AMP1 is chosen, the AMP1 FX SEND and RETURN have to be connected to the same
amplifier, which is connected to AMP1 INPUT and AMP1 OUTPUT of the 444!
Problem: No amp can be selected.
Check if a cabinet is selected.
Problem: No cabinet can be selected.
Please check if the chosen cable and (!) cabinet is connected properly.
Problem: drastic volume increase or decrease when switching between amplifiers with FX loop option
Problem: clicking noise when switching between amplifiers with FX loop option using long delay or
reverb times.
A word on impedances
When it comes to impedances, there have been written a lot of words and there have been told many
opinions, myths and beliefs. And as it is always in our world, all of them are in between the truth and
the untruth. Some more, some less. Don't expect mine to be the only truth, it's mine but i want to give
you some arguments on hand.
Trafos und Lautsprecher sind Spulen, also freuqenzabhängig.
Röhren sind nicht frequenzabhängig, sondern die sie umgebende Schaltung ist es.
Die angegebene Impedanz ist eine Definition bei 1kHz.
User's Manual 444