Oldfield 5918 User Manual Download Page 6

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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. Make sure the amplifier is in standby before changing the

position of this switch.

Power Level

- The power level control is a variable voltage control for the amplifier. At 100% the

amplifier will produce the maximum output and be the loudest. Turning this control

counterclockwise will reduce the overall volume.

Impedance Selector

- Use the Impedance Selector to match the amplifier output impedance to the

attached speaker. The amplifier is capable of handling a 4, 8, or 16 ohm load.

MAIN SPEAKER

- Connection for the primary speaker (internal or

external).

EXTERNAL SPEAKER

- Use this connection when using more than one speaker cabinet.

Note - Do not exceed a 4 ohm load.

Summary of Contents for 5918

Page 1: ...Oldfield Amplifiers User Guide Model 5918...

Page 2: ...roduce heat This product may be equipped with a polarized plug one blade wider than the other or a three prong grounded plug This is a safety feature If you are unable to insert the plug into the outl...

Page 3: ...h vacuum tubes until they have sufficiently cooled Oldfield amplifiers are capable of producing very high sound pressure levels Use care when setting and adjusting volume levels during use to protect...

Page 4: ...e and hand wired using the best quality components available for guitar amplification It is built to last a lifetime and give the owner countless hours of enjoyment whether on stage in the studio or i...

Page 5: ...d harmonics Channel 2 Volume Volume control for instruments plugged into the channel 2 input Rotating the control clockwise will make the channel 2 volume louder and increase overall gain and harmonic...

Page 6: ...efore changing the position of this switch Power Level The power level control is a variable voltage control for the amplifier At 100 the amplifier will produce the maximum output and be the loudest T...

Page 7: ...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 Your amp does not need to be re biase...

Page 8: ...If you are unfamiliar with replacing tubes this should be done by a qualified service technician For a little higher gain try replacing the preamp tubee with a 12AX7 s To blend the two channels run a...

Page 9: ...arge Power Transformer Output Transformer Reverb Transformer And Choke These items are guaranteed for ten years after date of purchase against manufacturer s defects If a failure occurs due a defect i...