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Summary of Contents for Conrad-Johnson ACT2
- Page 1 Conrad-Johnson Owner’s Manual ACT2 Advanced Composite-Triode Preamplifier conrad-johnson It just sounds right.
- Page 2 Although the ACT2 has been designed to operate in an intuitively apparent way, you will find useful information on its installation and operation in this manual. Please take a few minutes to read the manual to better understand the features and capabilities of your ACT2.
- Page 3 Warranty For Conrad-Johnson Components Conrad-Johnson Design, Inc. will provide service under warranty to the original owner on products sold new in the United States for the lesser period of three years from the date of purchase by the original purchaser, or five years from the date of shipment to the authorized conrad-johnson dealer.
- Page 4 Service Department conrad-johnson design, inc. 2733 Merrilee Drive Fairfax, VA 22031 The conrad-johnson service department can also be reached by e- mail at service@conradjohnson.com, by phone at 703-698-8581, or by fax at 703-560-5360. Service If your conrad-johnson audio component requires service, repack it using the original box and packing material and ship to the Service Department address above.
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Page 5: Electromagnetic Interference (Emi)
The first step in preparing your ACT2 preamplifier for use is to install the vacuum-tubes. To do this, remove the top plate of the tube guard by removing the four socket screws using the supplied hex-head screwdriver. The ACT2 uses four type 6N30P tubes. - Page 6 Physical location and cable “dress” can be an important factor in minimizing hum pickup. The installation should situate the preamplifier well away from the power amplifier, and power (ac mains) cords should be dressed to remain at least 4" (100mm) away from input/output cables. ACT2 Owner’s Manual...
- Page 7 20k ohms or higher. Since the ACT2 inverts phase, it may be necessary to invert the speaker leads to maintain correct absolute phase. See the section on “Getting the most out of your ACT2" for an explanation. ACT2 Owner’s Manual...
- Page 8 When first connected to ac mains, or after an interruption of power, the ACT2 will turn on in a default mode (after auto-muting), with the level set at 20, and the CD input selected. In subsequent sessions, as long as the ac mains has not suffered a power outage, the unit will turn on at the last used volume setting and input.
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Page 9: Remote Control
When EPL2(theater) is selected, the level will be set and locked to unity gain. Remote Control All operations of the ACT2 can be controlled by the wireless remote unit. MUTE: Pressing the mute button will cause the main outputs to mute and the level display to be zero. - Page 10 Tube Replacement The ACT2 circuit employs four vacuum tubes (V1 - V4), all 6N30Ps. The 6N30P offers low noise, low microphonics, and gain well suited to use in a zero-feedback line-stage. The brands of tubes we supply have been chosen by first selecting those brands...
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Page 11: Absolute Phase
This will be the case if the number of phase inversions is even (or zero). The ACT2 is phase inverting. If your system has an odd number of inversions, (for example, if the ACT2 is the o nly phase inverting unit in the chain) then you must add one phase inversion. - Page 12 The warm up period can be expected to last about fifteen minutes. Questions: If you have questions about the installation or function of your ACT2 do not hesitate to call Customer Service at (703) 698-8581. ACT2 Owner’s Manual...
- Page 13 Net Weight: 30 lbs total. Fuses The ACT2 has two power transformers (one for the tube circuitry, one for the control circuits), each of which is protected by a fuse. A failure of either of these fuses is a symptom of a more serious problem, and a competent service technician should be consulted.
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