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Fender Rumble Bass Owner's Manual

Fender Rumble Bass Owner's Manual

Custom amplification

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Summary of Contents for Fender Rumble Bass

  • Page 2: Specifications

    AMPLIFIER DAMPING FACTOR: 3.1 at 4 ohms POWER OUTPUT: 300 Watts, 5% THD into 4 ohms. SUGGESTED SPEAKER ENCLOSURES: 081-3100-000 Rumble bass 410 081-3101-000 Rumble bass SUB 081-3102-000 Rumble bass 115 WARNING: NO USER SERVICEABLE PARTS INSIDE, REFER SERVICING TO QUALIFIED PERSONNEL ONLY.
  • Page 3 Like the other Fender custom amps, the Rumble Bass is painstakingly built, one at a time, by a select group of craftsmen at the Fender electronics factory in Lake Oswego, Oregon.
  • Page 4 NORM COMBINE NORM SWITCH A / B INPUT INPUTS INPUT A VOLUME TREBLE BASS MIDDLE SELECT CHANNEL RUMBLE FRONT PANEL FUNCTIONS A. A VOLUME - Adjusts the volume of Channel A. B. TREBLE - Adjusts the level of high frequencies in Channel A. C.
  • Page 5 TREBLE BASS MIDDLE CHANNEL MID FENDER MUSICAL INSTRUMENTS MADE IN U.S.A. J. CHANNEL - Selects whether Channel A and Channel B are to be separate (SWITCH) or mixed (COMBINE) together before being sent to the speaker jacks. K. MID - Selects whether pre-set mid frequencies are to be attenuated in Channel B.
  • Page 6 WARNING: Bias and balance are pre-set at the factory. Make adjustments only when necessary. If you are unsure about setting the bias and balance, take your Rumble Bass to the nearest authorized Fender service center. 1. Turn on the amplifier and let it warm up for at least three minutes with the STANDBY switch in the ON position.
  • Page 7 TUBES The Fender Amp Custom Shop Rumble Bass consists of six 6550WA’s, four 12AX7’s, three 12AT7’s and two 12BH7’s. For best results, replace with Fender original equipment tubes only. Tube location is printed in cabinet.