Fender Rumble Studio 40 Stage 800 User Manual THERMAL PERFORMANCE AND PROTECTION

Rumble Studio 40 and Rumble Stage 800 use class-D power amplifiers with thermal and short circuit protection. In the event of a short circuit, the amplifier will temporarily mute (no sound from speakers) and resume normal operation when the fault is removed.

For increased thermal performance, Rumble Stage 800 has variable-speed fan cooling that starts at low speed and increases as amplifier temperature rises with playing use.

Leave at least 6” clearance between the amplifier vents and other objects. If the amplifier vents are blocked or if the amp is used in an extremely hot environment, the amp may overheat and trigger thermal protection, causing temporary speaker muting. Normal operation will automatically resume after the temperature cools to a level within operating range.

Under the most severe operating conditions, the amp can overheat to the point of interrupting power, resulting in a blank DISPLAY WINDOW (G) and no sound from the speakers. In this unlikely event, normal operation will automatically resume after the temperature cools to a level within operating range. Rumble Studio 40 may require the POWER switch (L) to be turned off and back on again after such a power interruption.