RedPlate TweedyDrive Operations Guide
5
BOOST
– Girth Boost feature. When lit, adds volume and tone by removing the preamp Tone
control from the circuit (tone stack lift). The footswitch button does not have any effect when the
front panel Tone control is rotated to zero because it is a duplicate function.
POWER ON/OFF PROCEDURE
1. Check the front panel Standby switch to make sure it is toggled downward for Standby
operation (the Standby switch is located at the right side of the front panel next to the pilot
light).
2. Toggle the main power switch to the up position (this switch is located at the edge of the
IEC input module). The front panel pilot light should be lit.
3. Wait one minute and then toggle the front panel Standby switch upwards to the Operate
position.
4. POWER OFF
– Toggle the main power switch downward, there is no need to go into
standby first although it will not hurt anything.
MAINTENANCE SECTION
Your TweedyDrive 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.
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 TweedyDrive is a cathode biased amp so no biasing is required.