RedPlate BTS2 Operations Guide
Page 5
©
RedPlateAmps 2012
MAINTENANCE SECTION
Your BTS2 amp has been designed for years of trouble free operation. The vacuum tubes will need to be replaced over
time. We recommend new output tubes every 160 - 240 hours and new preamp tubes every 320 - 480 hours.
The front and rear panels have a protective finish that can be easily scratched with abrasives so always use a damp soft
cloth to clean them (never use paper towels). The cabinetry can be cleaned with our super secret tolex cleaner (on a paper
towel - 2 squirts of WD-40 and 4 squirts window cleaner), let your keyboard player try it on his plastic keys, it replicates the
feel of a brand new keyboard.
TUBE CHART
All tube brands are acceptable, a long plate is preferred in the V4 (Phase Inverter) position. The Overdrive tube is also
the Tweed preamp tube. 6V6GTA can be substituted for the 6L6 GC tubes for less wattage but do not mix the 2 types.
Warning
– No user serviceable parts inside so unless you know what you’re doing please refer to
a qualified service person only.
BIAS PROCEDURE
The BTS2 is a cathode biased amp so no biasing is required.
INTERNAL TRIM POT
The BTS2 has 1 internal trim pot for the PI Balance
– Useful for working with unmatched 12AX7 tubes in the phase
inverter position. Refer to qualified personnel for proper setting.