TABLE OF CONTENTS Introduction ................3 The Front Panel ..............4 The Rear Panel ..............5 Important Information About Tubes and Tube Products ....6 A Brief History of Tubes ..........6 Tube Types and Usage ............6 The Nature of Tubes: Why (and When) to Replace Them ..7 The Importance of Proper Biasing ........8 Survival Tips for Tube Amplifiers ........9 Suggested Settings .............10...
Like all Crate products, your V50 amplifier is designed by musicians and built using only the best components. Extensive testing confirms that this amplifier is the absolute best it can be.
The Front Panel 12. REV 1: Use this to adjust the amount INPUT: Use this jack to connect of reverb for Channel 1. Fully counter- your guitar to the amplifier using a clockwise is “dry” (no reverb). Rotate shielded instrument cable. clockwise to increase the amount of VOLUME: Use this to adjust the output reverb.
The impedance switch voltage, power, and frequency require- (23) must be set to the 8 ohm position ments stated on the V50 rear panel. Do when a 16 ohm extension speaker is not attempt to defeat the safety ground used.
Important Information about Tubes and Tube Products: A Brief History Of The Tube: In 1883, Edison discovered that electrons would flow from a suspended filament when enclosed in an evacuated lamp. Years later, in 1905, Fleming expanded on Edison’s discovery and created the “Fleming Valve”.
Important Information About Tubes and Tube Products (continued): The power tubes are the largest tubes used in an amplifier. These tubes convert the low-level, conditioned signal from the preamplifier into a level that is sufficient to drive the speakers. There are several types of power tubes available, each of which offers a different perfor- mance/sound characteristic.
Important Information About Tubes and Tube Products (continued): Whenever you replace the power tube(s): • Always have the amplifier’s bias voltage checked by a qualified service center. Improper bias voltage will cause degradation in performance and possibly damage the tubes and/or the amplifier.
Important Information About Tubes and Tube Products (continued): Survival Tips For Tube Amplifiers: To prolong tube life, observe these tips and recommendations: • Match the impedance of your speaker cabinet(s) to your amplifier. Improper impedance matching will contribute to early tube degradation and may cause premature tube failure. •...
Weight 58 lb/26.2 kg The V50 is covered with a durable Tolex material. Wipe it clean with a lint-free cloth. Never spray cleaning agents onto the cabinet. Avoid abrasive cleansers which would damage the finish. Crate continually develops new products, as well as improves existing ones. For this reason, the specifications and information in this manual are subject to change without notice.
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