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Summary of Contents for Oldfield 5918
- Page 1 Oldfield Amplifiers User Guide Model 5918...
- Page 2 Oldfield Amplifiers User Guide Important Safety Instructions • For your safety read, retain, and follow all instructions. Heed all warnings. • Only connect the power supply cord to an earth-grounded AC receptacle. This amplifier is designed to operate on standard North American 115V AC and should only be plugged in to a receptacle meeting those specifications.
- Page 3 Oldfield Amplifiers User Guide Important Safety Instructions - Continued • CAUTION: No user serviceable parts inside, refer servicing to qualified personnel only. Do not expose the circuit of the amplifier under any circumstances. • CAUTION: By nature vacuum tubes get very hot during operation. Do not touch vacuum tubes until they have sufficiently cooled.
- Page 4 User Guide Overview Congratulations on your purchase of a new Oldfield 5918 amplifier. The Oldfield 5918 gets it roots from the legends of the late 1950’s and is well suited for Country, Jazz, Blues and Rock players. This amplifier is all tube and hand-wired using the best quality components available for guitar amplification.
- Page 5 Oldfield Amplifiers User Guide Operation Front Controls Reference the front panel viewing left to right Channel 1 Lo Input / Hi Input - Instrument inputs for channel 1. The Lo input has less gain than the Hi input. Channel 2 Lo Input / Hi Input - Instrument inputs for channel 2. The Lo input has less gain than the Hi input.
- Page 6 Oldfield Amplifiers User Guide Operation - Continued Rear Controls FUSE - Replace only with a 2.0 Amp slo-blo fuse. Never install a larger fuse than specified. Have the amplifier tested by a qualified technician if it repeatedly blows fuses. Rectifier Selection Switch - Your amplifier is capable of using a tube or solid state rectifier. Each type will yield a slightly different tone.
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Page 7: User Guide
Oldfield Amplifiers User Guide Tubes Looking at the back of the amplifier and reading left to right the tube compliment is as follows: Rectifier - Your amplifier comes shipped with a 5V4 tube rectifier. Power - Your amplifier uses (2) 6V6 power tubes. When replacing power tubes use only a matched pair from the same manufacturer. - Page 8 Oldfield Amplifiers User Guide Performance Notes: • For a more “tweed” type tone try replacing the preamp tubes with a high quality 12AY7’s and the rectifier tube with a 5Y3. If you are unfamiliar with replacing tubes this should be done by a qualified service technician.
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Page 9: Warranty
The following warranties apply to the original owner of the amplifier. All warranty work must be performed by Oldfield for the warranty to be in effect. Warranties do not cover normal wear and tear or abuse. Failure to comply with the safety precautions outlined earlier in the owner’s manual will void all warranties.
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