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Summary of Contents for Conrad-Johnson ART 108A
- Page 1 Conrad-Johnson Owner’s Manual ART 108A Amplifier conrad-johnson It just sounds right.
- Page 2 Thank you for selecting the ART 108A Amplifier to power your audio system. The ART 108A Amplifier draws on four decades of research at conrad-johnson into the reproduction of recorded music. The result is a power amplifier with a remarkable ability to recreate the dynamics, textures, tonalities, and ambience of live musical performances.
- Page 3 Limited 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 Questions about this warranty should be addressed to: Service Department Conrad-Johnson Design, Inc. 2800K Dorr Avenue Fairfax, VA 22031 The conrad-johnson service department can also be reached by e- mail at service@conradjohnson.com or by phone at 703-698-8581. 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: Installation
The ART108A should be unobstructed on all four sides and top to provide adequate ventilation. All ART 108A Amplifiers sold in the United States are configured for operation on a 60Hz ac power line producing between 108 and 126 volts. - Page 6 (ac mains) cords should be dressed to remain at least 4" (100mm) away from input/output cables. Connection INPUT: Connect the preamplifier to your ART 108A Amplifier at the RCA type connector located on the back of the amplifier. OUTPUT: Five-way binding posts are provided for connection of your loudspeakers, with correct spacing to accept a standard "double banana"...
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Page 7: Vacuum Tube Replacement
Vacuum Tube Replacement The ART 108A Amplifier uses eleven vacuum tubes of two different types: three type 6922 (V1, V2, V3,) and eight type 108A KT88 (V4-V11).The amplifier designed exclusively for the use of KT88’s. We know of no vacuum tubes available which will improve the sonic performance of your ART 108A Amplifier. - Page 8 PLATE FUSE: Your ART 108A Amplifier has been fitted with a plate supply fuse that is installed to protect the amplifier circuitry in the event of output tube failure. The fuse holder is physically located on the back panel, near the speaker binding post.
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Page 9: Absolute Phase
This will be the case if the number of phase inversions is even (or zero). The ART 108A Amplifier is phase correct (non-inverting). If your system has an odd number of inversions, (for example, if you have a phase inverting preamplifier) then you must add one phase inversion. - Page 10 Consult your conrad- johnson dealer for recommendations for your specific system. Performance Tip Warm up the ART 108A Amplifier before listening: The sonic performance of the ART 108A Amplifier improves noticeably as the unit warms up. The midrange becomes more lucid, the highs smoother, and the soundstage expands.
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Page 11: Specifications
Net Weight: 89 lb net Fuses The ART 108A Amplifier power transformer is protected by a fuse on the ac power line (F5, located in a compartment in the ac line-cord receptacle mounted on the back of the amplifier), and by four separate internal fuses on the secondary circuits of the transformer (F1 –...
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