Related Manuals for Aiken Amplification Invader
Summary of Contents for Aiken Amplification Invader
- Page 1 Invader User's Manual Aiken Amplification 1225 Montague Avenue Greenwood, SC 29646 Tel: 864-993-8383 http://www.aikenamps.com...
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Page 2: Table Of Contents
Contents Contents.......................2 Getting Started.....................3 Front Panel Controls and Switches..............5 Rear Panel Controls and Switches..............8 Tube layout and replacement................10 Biasing........................11 Speakers......................12 Troubleshooting....................13 Specifications....................16 InvaderManual.doc 12/08/11 Page 2 of 16 Copyright 2000-2011, Aiken Amplification, Inc. -
Page 3: Getting Started
Built to last. Premium, tight-tolerance parts are used for reliability, including 2W 1% metal film resistors, 630V axial-leaded polypropylene film/foil capacitors, and low-noise, sealed, 2W conductive plastic mil-style RV4 pots. InvaderManual.doc 12/08/11 Page 3 of 16 Copyright 2000-2011, Aiken Amplification, Inc. - Page 4 Output level is independent of attenuator setting, so the FOH mix level doesn't change when changing attenuation settings, which means the sound man doesn't get mad at you for changing stage volume with the attenuator! InvaderManual.doc 12/08/11 Page 4 of 16 Copyright 2000-2011, Aiken Amplification, Inc.
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Page 5: Front Panel Controls And Switches
Volume 1 is the "bright" channel volume control. Volume 2: Volume 2 is the "dark" channel volume control. Treble: The treble control adjusts the high frequency equalization. Middle: The middle control adjusts the midrange frequency equalization. InvaderManual.doc 12/08/11 Page 5 of 16 Copyright 2000-2011, Aiken Amplification, Inc. - Page 6 Before changing positions, just stop playing for a second, change to the different attenuation level, and continue playing. InvaderManual.doc 12/08/11 Page 6 of 16 Copyright 2000-2011, Aiken Amplification, Inc.
- Page 7 Power switch: The power switch turns the amplifier on in the up position and off in the down position. InvaderManual.doc 12/08/11 Page 7 of 16 Copyright 2000-2011, Aiken Amplification, Inc.
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Page 8: Rear Panel Controls And Switches
The emulator circuitry is tapped off before the attenuator, so the attenuator level does not affect the line out level. The InvaderManual.doc 12/08/11 Page 8 of 16 Copyright 2000-2011, Aiken Amplification, Inc. - Page 9 A locking mil-style RV6 trimpot is provided to allow adjustment of bias balance. The outer locknut should be loosened before adjusting the screwdriver-slot control. Refer to the section on biasing for further instructions. InvaderManual.doc 12/08/11 Page 9 of 16 Copyright 2000-2011, Aiken Amplification, Inc.
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Page 10: Tube Layout And Replacement
Tube layout and replacement The Invader uses four ECC83/12AX7 tubes, one ECC81/12AT7 tube, and two 6BQ5/EL84 output tubes (four EL84s in the 30W version). It also uses a single 5AR4/GZ34 rectifier tube. The preamp tubes are housed in removable "bayonet" metal shields. -
Page 11: Biasing
Continued operation with glowing plates will soon result in failure of the tubes, possibly damaging screen grid resistors or other amplifier components. The HT fuse should prevent any major damage to output or power transformers, or other expensive components. InvaderManual.doc 12/08/11 Page 11 of 16 Copyright 2000-2011, Aiken Amplification, Inc. -
Page 12: Speakers
Celestion Greenbacks have less volume and a dip in the mids, which makes them nice and smooth. They are rated at 25W, so they make a nice match for the Invader 18, but are a bit under-rated for the Invader 30 in a 1x12 configuration. Celestion Alnico Blues are by far the... -
Page 13: Troubleshooting
Try replacing the cable on the bad side. If this doesn't fix the problem, try replacing the reverb tank. If the problem still exists, the amplifier will need to be serviced. InvaderManual.doc 12/08/11 Page 13 of 16 Copyright 2000-2011, Aiken Amplification, Inc. - Page 14 Some tubes tend to exhibit a low-level "ticking" noise right after the amplifier is taken off standby. The noise stops after a second or two, when the tube has had a chance to stabilize, and is not indicative of a problem. InvaderManual.doc 12/08/11 Page 14 of 16 Copyright 2000-2011, Aiken Amplification, Inc.
- Page 15 In rare cases, the EL84 output tubes can be microphonic, particularly if they are at the end of their lifespan. InvaderManual.doc 12/08/11 Page 15 of 16 Copyright 2000-2011, Aiken Amplification, Inc.
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Page 16: Specifications
2x10 combo: 25.5" W x 21"H x 9.5" D 2x12 combo: 29" W x 21" H x 9.5" D Weight: Head: 31lbs 1x12/2x10 combos: 48lbs (varies with speaker selection) 2x12 combo: 58lbs (varies with speaker selection) InvaderManual.doc 12/08/11 Page 16 of 16 Copyright 2000-2011, Aiken Amplification, Inc.
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