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RedPlate RedStar Operations Guide
Treble Control – Adjusts the balance of high and low frequencies.
Middle Control – Controls the amount of Midrange frequencies, somewhat interactive with
the Bass Control.
Bass Control – Sets the amount of low end. Can be rotated to zero where it clicks off for a full
tone stack lift (Tone Controls are Bypassed).
Presence Control – The presence circuit uses global negative feedback to remove low
frequencies which frees up bandwidth for more midrange and highs. The control clicks off when
rotated to zero for no presence.
Master Volume – This is an active control and actually adds gain at the higher settings. The
cleanest tones are achieved at settings below 2 o'clock.
IEC Module – contains the main power switch, power cord inlet connector and the fuse drawer
which doubles as the voltage selector on export models. To access the fuse(s) use a small flat
blade screwdriver in the notch at the bottom of the power cord inlet connector, the drawer snaps
out in a rearward direction. The RedStar can accept both the larger (3AG footprint) or smaller
European (5mm X 20mm) fuses. A time delay variety (SLO-BLO) is recommended. When the
export version becomes available, the fuse drawer can be rotated for voltage selection, make sure
the correct value fuse is located on the same side of the fuse drawer as the desired selection
arrow. Line up the appropriate arrow on the fuse drawer with the arrow on the bottom right of the
module for the proper VAC selection.
Standby Switch – This switch allows the tubes to warm up before operating the amplifier. Wait
1 minute after power on to move it up to the operate position. For improved tube life and
performance do not leave the amplifier in Standby position for longer than 20 minutes (better to just
leave it in operate mode during performance intermissions).
100 WATT / 50 WATT Switch – This switch changes the output tube by lifting the center pair of
output tubes (V8 & V9) enough to be irrelevant. The impedance selector does not have to be
changed in 50 watt mode.
MASTER SECTION
REAR PANEL SECTION
2
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