Using one speaker cabinet: With the amp OFF, match the impedance selector with the
speaker cabinet's impedance. Always verify a speaker cabinets impedance before using with
the amplifier. An impedance mismatch can potentially damage the amplifier.
Using two speaker cabinets: When using with two speaker cabinets, both must be the same
impedance (i.e. two 8 ohm cabs), and the impedance selector should be set for half each cab's
impedance. For example:
•
When using two 8 ohm cabs: Set the impedance selector should be set to 4 ohms.
•
When using two 16 ohm cabs: Set the impedance selector should be set to 8 ohms.
•
Using two 4 ohms cabs: This configuration is not supported because there is not 2 ohm
tap on the Sister's output transformer.
Effects Loop
The Sister's tube effects loop is designed to work ideally with instrument level effects (i.e.
effects pedals) and some line level equipment (i.e rack effects units) gear. In general, time-
based effects such as reverb and delay are best placed in the effects loop. The effects loop is
located after the preamp section of the amp, where most of the overdrive is generated. This
allows time-based effects to be operated cleanly. For example, plugging a delay into the
effects loop allows you to delay your distorted tone, giving a clear delay effect. Conversely,
plugging a delay into the input of the amplifier would overdrive the delay, giving a muddier
washed-out delay sound. There is no correct way to use your effects, it's all a matter of
preference.
The Return jack of the Effects Loop may also be used as a power amp input, and in conjunction
with a separate preamp unit. When used in this fashion, both Presence, and Resonance
controls will function normally.
Tip: A volume pedal also works well in the effects loop, acting as an overall master volume, which
can be extremely useful in a live setting, however a buffered pedal is preferred to prevent
volume/treble loss.
Send Jack: Connect to the input of your effects via ¼” shielded instrument cable.
Return Jack: Connect to the output of your effects via ¼” shielded instrument cable.
Footswitch
Switches between Normal and Overdrive channels. Plugging in the footswitch over-rides the
front panel Channel switch.
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Summary of Contents for Sister
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