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Speaker Jacks, Impedance Switch
Speaker Jacks, Impedance SwitchSpeaker Jacks, Impedance Switch
Speaker Jacks, Impedance Switch
When only one speaker is being used, it must be plugged into the “Main” speaker jack,
and the Impedance switch should be set to match the impedance of that speaker.
The Extension speaker jack may only be used if there is also a speaker plugged into the
Main speaker jack. Inside the amp, the Extension speaker jack is wired in parallel with
the Main speaker jack. When using an extension speaker, it is best for the extension
speaker and main speaker to have the same impedance. Since the main and extension
speaker jacks are wired in parallel, the total combined impedance seen by the amp will
be equal to ½ of either speaker’s impedance.
For example, if you are using an 8-ohm speaker connected to the Main speaker jack,
and another 8-ohm speaker connected to the Extension speaker jack, the total
combined load impedance will be 4 ohms, so you should set the Impedance switch to 4
Ohms.
Bypass Jack
Bypass JackBypass Jack
Bypass Jack
The bypass jack is provided for use with the optional Ironman in-cabinet attenuator.
When this attenuator is installed in the Galaxy speaker cabinet, the Bypass input on
the Ironman is to be connected to the Bypass output of the Galaxy head. This causes
the attenuator to be bypassed then the Channel switch is set to the rhythm position.
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