User manual REVEL F12 REV A

[. . . ] Revel Concerta F12 Loudspeaker Owner's Manual ® TM 3 Oak Park, Bedford, MA, 01730-1413 USA Telephone: 781-280-0300 Fax: 781-280-0490 www. revelspeakers. com Customer Service: Telephone: 781-280-0300 Sales Fax: 781-280-0495 Service Fax: 781-280-0499 Product Shipments 16 Progress Road Billerica, MA 01821-5730 USA Part No. This document should not be construed as a commitment on the part of Harman Specialty Group. The information it contains is subject to change without notice. Harman Specialty Group assumes no responsibility for errors that may appear within this document. "Revel, " "Concerta, " and the Revel logo are registered trademarks of Harman International Industries. [. . . ] Once the F12s have been placed, sit in the primary listening position. Note the locations at which the person sitting in the primary listening position can see either F12. Be sure to look for both F12s in the reflection on each room boundary. These are reflection points that require acoustic treatment materials. If acoustic treatment materials are not available, hanging a rug over the reflection points will help to reduce degradation in overly "live" rooms. Carpeting the floor between the loudspeakers and the primary listening position and placing irregular surfaces such as bookcases at first reflection points will also help minimize strong reflections. FEET AND OPTIONAL SPIKES When shipped, rubber feet are attached to the bottom of the cabinet for optimal stability, accommodating installations on tile and hardwood floors. The F12 is shipped as shown on the left side of Figure 7 (next page). Acoustic Treatment Materials The F12 features high-order filters at 575Hz and 3. 0kHz that optimize loudspeaker onaxis and off-axis response, minimizing degradations that occur in overly "live" rooms. Placing minimal acoustic treatment materials at primary reflection points will reduce these distortions even further. Ideally, acoustic absorbers should be placed at the first reflection points on the front and side walls and either acoustic absorbers or diffusers should be placed at the first reflection points on the rear wall. Because the listener's eyes and ears are on the same plane, the "mirror method" is an accurate determinant of critical reflection points. This method can be used to determine reflection points for side walls, rear walls, front walls, and even the ceiling. Applying acoustic treatment materials to the side walls is most important, followed by the front wall, rear wall, and ceiling. Note When moving the F12, avoid dragging it across the floor, as this will damage the feet, the spikes, and/or the wood cabinet itself. Always lift the F12 and carry it to its new location Four metal spikes are included for use when the loudspeaker is placed on carpeted floors. Insert the spikes into the threaded inserts at the bottom of the feet as shown on the right side of Figure 7 (next page), so that the spikes protrude from the cabinet. REVEL Concerta F12 Owner's Manual 11 Figure 7: Adjustable Spike feet When shipped, the rubber feet are attached as shown here for loudspeaker placement on tile or hardwood floors. The spikes should be inserted as shown here for loudspeaker placement on carpeted floors. (Threaded into Center of Foot) To install the spikes: 1. Rotate the spike clockwise into the threaded insert in the center of a rubber foot, round end first, as shown on the right side of Figure 7 (above). When all four spikes have been installed, stand the F12 in the upright position. Repeat these steps to install the spikes on the other F12. CAUTION Floor-standing loudspeakers such as the F12 have a high center of gravity, which may cause them to fall if tipped or improperly positioned. To avoid this, anchor the loudspeaker to the floor and/or wall using the same procedures and hardware used to anchor bookcases, wall units, and other furniture. Harman Specialty Group assumes no responsibility for improper selection and installation of hardware or for any personal injuries or product damages resulting from improper installation or a fallen loudspeaker. 12 REVEL Concerta F12 Owner's Manual MAKING CONNECTIONS The F12 features gold-plated binding posts and shorting-straps that allow it to be configured for single-wired, bi-wired or biamplified connections. Otherwise, each power amplifier can be connected to a separate connector for the same output channel of the preamplifier. Use high-quality loudspeaker cable with a maximum total loop resistance of 0. 07ohms or less (for each wire run). Refer to the table below to determine the appropriate maximum wire gauge. CAUTION · Never make or break connections unless all system components are powered off. · Remove the input panel shorting-straps identified in Figure 5 (page 9) before making bi-wired or bi-amplified connections. [. . . ] However, these power amplifiers must have identical "gain factors. " If the gain factors are dissimilar, a means of adjusting the input level of at least one power amplifier is required. Experiment with the F12 loudspeaker's placement to achieve the best overall tonal balance, image precision, and sense of spaciousness in the listening room. Refer to the Loudspeaker Placement section that begins on page 10 for additional information about loudspeaker placement. Repeat step 3 to connect the input connectors labeled LF (Low Frequency) on the second F12 to the same power amplifier that was selected in step 3. LOUDSPEAKER VOLUME LEVELS High-order filters include steep cut-offs to reduce potential damage from "out-ofband" frequencies. [. . . ]