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Both the preamp tubes and power tube are cathode biased, or self-biasing. You may replace these tubes without rebiasing. The Nickel Box is built with either a 9 pin EL84 or 8 pin 6V6. These tubes are not interchangeable. You may substitute other tubes for the 12AX7, such as a 12AY7, 12AU7, 12AT7, etc.
CONTROL PANEL 5. Treble 1. Pilot Light Controls the amount of high frequecy The pilot indicates that the amp is powered content. on. Use #47 replacement bulbs. 6. Bass 2. O / Stdby / Play Controls the amount of low frequency This is a 3-position switch.
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CHASSIS BOTTOM 1. Fuse 3. Speaker Jack The mains fuse is 500mA Slo-Blo 3AG Combo amps are supplied with an 8 ohm speaker. Head units feature 4 or 8 ohm connections. 2. Lineout Use this jack to connect to a mixing board, 4.
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DE LISLE AMPLIFIER WARRANTY de Lisle ampli ers are warranted to be free from defects in materials and workmanship for as long as the original purchaser owns the item. This warranty does not cover defects resulting from normal wear and tear, misuse, neglect, accident, modi cation, unauthorized server or repair, and/or physical damage to the chassis or cabinet.
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