Related Manuals for Aiken Amplification Invader MKII
Summary of Contents for Aiken Amplification Invader MKII
- Page 1 Invader MKII User's Manual Aiken Amplification, Inc. 1225 Montague Avenue Greenwood, SC Tel: 864-993-8383 http://www.aikenamps.com...
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Page 2: Table Of Contents
Contents Getting Started.....................3 Front Panel Controls and Switches..............5 Rear Panel Controls and Switches..............8 Tube layout and replacement................10 Biasing........................12 Speakers......................13 Troubleshooting....................14 Specifications....................17... -
Page 3: Getting Started
Aiken Invader MKII amplifier! guitar, using single-coil or humbucking pickups. The Invader MKII is an all-tube amplifier, available in 18 or 30 watt versions. This The amplifier was designed specifically to amplifier is truly touch-sensitive, going from... - Page 4 Available in combo format with two 12" speakers, a single 12" speaker, or in a head configuration. Celestion Greenback speakers are standard, others available upon request for an additional charge. Extension speaker cabinets are also available. InvaderMKIIManual.doc 12/08/11 Page 4 of 17 Copyright 2003-2011, Aiken Amplification, Inc.
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Page 5: Front Panel Controls And Switches
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. Bass: The bass control adjusts the low frequency equalization. InvaderMKIIManual.doc 12/08/11 Page 5 of 17 Copyright 2003-2011, Aiken Amplification, Inc. - Page 6 The pilot lamp features a screw-on “jewel” that can be removed from the front panel to replace the bulb without having to remove the chassis. The bulb is a standard #47 “bayonet” style bulb, available at most electronics supply stores. InvaderMKIIManual.doc 12/08/11 Page 6 of 17 Copyright 2003-2011, Aiken Amplification, Inc.
- Page 7 Glory switch is turned on. When turning the amplifier off, the Glory switch should first be turned off, then the power is turned off after a few seconds. InvaderMKIIManual.doc 12/08/11 Page 7 of 17 Copyright 2003-2011, Aiken Amplification, Inc.
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Page 8: Rear Panel Controls And Switches
Be sure to use only quality speaker cable - do NOT, under any circumstance, use guitar cable to connect the amplifier to a speaker cabinet. Doing so may cause damage to the amplifier. InvaderMKIIManual.doc 12/08/11 Page 8 of 17 Copyright 2003-2011, Aiken Amplification, Inc. - Page 9 A locking mil-style RV6 trimpot is provided to allow adjustment of bias current. The outer locknut must be loosened before adjusting the screwdriver-slot control. Refer to the section on biasing for further instructions. InvaderMKIIManual.doc 12/08/11 Page 9 of 17 Copyright 2003-2011, Aiken Amplification, Inc.
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Page 10: Tube Layout And Replacement
If this key is broken off, it will allow incorrect placement of the tube in the socket, which could result in damage to the amplifier. Be sure to carefully examine the tube before replacing it. InvaderMKIIManual.doc 12/08/11 Page 10 of 17 Copyright 2003-2011, Aiken Amplification, Inc. - Page 11 You can also use any of the following tube types in the 30W Invader: 6L6, 5881, KT66, 6550. Bias them the same as you would for EL34 tubes, as described in the next section on biasing. InvaderMKIIManual.doc 12/08/11 Page 11 of 17 Copyright 2003-2011, Aiken Amplification, Inc.
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Page 12: 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. InvaderMKIIManual.doc 12/08/11 Page 12 of 17 Copyright 2003-2011, Aiken Amplification, Inc. -
Page 13: Speakers
The Invader has two paralleled output jacks, and can easily drive two 4x12 cabinets to extremely loud volume levels, despite the 18W rating. InvaderMKIIManual.doc 12/08/11 Page 13 of 17 Copyright 2003-2011, Aiken Amplification, Inc. -
Page 14: 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. InvaderMKIIManual.doc 12/08/11 Page 14 of 17 Copyright 2003-2011, Aiken Amplification, Inc. - Page 15 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. InvaderMKIIManual.doc 12/08/11 Page 15 of 17 Copyright 2003-2011, Aiken Amplification, Inc.
- Page 16 In rare cases, the EL84 or EL34 output tubes can be microphonic, particularly if they are at the end of their lifespan. InvaderMKIIManual.doc 12/08/11 Page 16 of 17 Copyright 2003-2011, Aiken Amplification, Inc.
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Page 17: Specifications
18W head total weight = 37lbs 30W head total weight = 43lbs 18W 1x12 combo total weight = 56lbs 18W 2x12 combo total weight = 69lbs 30W 2x12 combo total weight = 75lbs InvaderMKIIManual.doc 12/08/11 Page 17 of 17 Copyright 2003-2011, Aiken Amplification, Inc.
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