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Table of Contents
Summary of Contents for andrews Para-Dyne 20
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Page 1: Operation Manual
OPERATION MANUAL Head and Combo 11/03/2012... - Page 3 Thank you for purchasing an Andrews Amplifier. The Para-Dyne name is derived from the two-channel dynamic tone of the amp. As with all Andrews amps, these models are built to the highest standards of craftsmanship and are finely tuned for the ultimate tone.
- Page 4 FEATURES; 2 CHANNELS OF ALL-TUBE TONE - Selectable by front panel or footswitch, • Channel One provides those classic warm yet sparkling clean tones and is a perfect platform for pedal boards while Channel Two gives you a wide range of smooth, sustaining overdrive lead tones.
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Page 5: Warnings And Precautions
Warnings and Precautions During operation, vacuum tubes can reach temperatures over 400 degrees F. Do not touch hot tubes. Insure plenty of ventilation behind the amp. Keep the amp away from curtains and other flammable objects and children. Do not expose your amplifier to rain. Never set any cups, glasses, bottles or cans of liquid on your amplifier. -
Page 6: Front Panel
Front Panel 1. INPUT JACKS – For maximum versatility, we have provided two input jacks (labeled HI and LO). The HI jack provides a bit more drive and sensitivity. The LO jack provides a slight attenuation and is useful when a cleaner and slightly darker tone is desired, especially with high output pickups. - Page 7 9. MASTER VOLUME CONTROL – Use the MASTER VOLUME control to adjust the loudness of the amp when using the lead channel. Try setting it a little louder than the clean channel and switching to the lead channel for solos. For practicing at low volume, the control is designed to maintain a great overdrive tone when turned down.
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Page 8: Rear Panel
Rear Panel 1. FUSES – Always use correctly rated fuses or severe damage to the amp may occur. Refer to the rear panel for fuse ratings. Always unplug the amp before replacing any fuses. When installing a new HV fuse, first insert it into the cap of the fuse holder, then while holding only the cap, insert the fuse into the holder, push in and turn clockwise to lock the cap and fuse in place. - Page 9 5. IMPEDANCE SELECTOR – Always set this switch to the proper speaker load according to the chart below. Note: The Para-Dyne combos incorporates built-in 8 ohm speaker loads so leave it set to 8 when not connecting another cabinet. Setting For One Cabinet For Two cabinets One 4 ohm cabinet Two 8 ohm cabinets...
- Page 10 FOR TECHNICAL TYPES We have provided this information for those who have a technical interest, proper equipment and a DYI attitude. CAUTION! GUITAR AMPLIFIERS CONTAIN LETHAL VOLTAGES. If you have any doubt about your ability to safely perform this procedure, refer the job to a qualified technician! Bias Adjustment Procedure: Precautions: •...
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Page 11: Tube Replacement
TUBE REPLACEMENT Precautions: Always unplug the amplifier and allow the tubes to cool completely before touching them. It is absolutely necessary to adjust the bias when replacing the output tubes. When to replace tubes: 12AX7 preamp tubes will generally last for many thousands of hours but occasionally problems can development before they “wear out”. -
Page 12: Limited Warranty
LIMITED WARRANTY – Valid in USA and Canada only Andrews Amp Lab Inc. warrants this product to be free of defects in materials and workmanship for a period of five (5) years from the original date of purchase to the original purchaser.