User manual REVEL PERFORMA B15A SUBWOOFER

[. . . ] Revel Performa B15a Subwoofer TM ® Owner's Manual 3 Oak Park, Bedford, MA, 01730-1413 USA | Telephone: 781-280-0300 | Fax: 781-280-0490 | www. revelspeakers. com Customer Support: Telephone: 781-280-0300 | Sales Fax: 781-280-0495 | Service Fax: 781-280-0499 Please contact Customer Support for information about product shipments. Part No. 352990-001 | Rev A | 01/04 "Revel, " "Performa, " and the Revel logo are registered trademarks of Harman International Industries. 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. WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS PRODUCT TO RAIN OR MOISTURE. CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE REAR PANEL. [. . . ] If the room is symmetrical and the L/R speakers and listening position are also symmetrical within the room, the B15a subwoofers can be placed in opposite corners Listening Position (e. g. , on couch) 12 REVEL PERFORMA B15a Owner's Manual REAR PANEL LAYOUT Figure 9. The B15a's rear panel layout shows locations of controls, as well as audio and power connectors. 1 EQ1~EQ3 Controls: Three parametric equalizers includes variable controls for FREQ. , BANDWIDTH, and LEVEL. Use these controls to modify the frequency response at three points, adjustable from 18 to 80Hz, across a bandwidth from 0. 1 to 1. 0 octaves, with level boost up to 6dB or cut down to -14. 5dB. Low-Pass/High-Pass Filters: The low-pass filter has an ON/OFF and 24/48dB slope switches, and variable controls for frequency, phase, and level. The high-pass filter is always on and has a variable frequency control and 12/24dB slope switch. Use the controls to precisely set a two-way crossover point from 30 to 80Hz, with symmetrical 24dB slopes or asymmetrical 24/12 or 48/12 dB slopes, and low-pass phase shift from 0 to 180 degrees. INPUT: Use stereo XLR (balanced) connectors or RCA (unbalanced) jacks to connect from preamplifier outputs, or front outputs of a multi-channel decoder. AUX OUTPUT: Use stereo XLR (balanced) connectors or RCA (unbalanced) jacks to loop input audio signals to additional REVEL PERFORMA B15as (if present). HIGH PASS OUTPUT: Use stereo XLR (balanced) connectors or RCA (unbalanced) jacks for (high-pass) connection to the main amplifier's inputs. REVEL PERFORMA B15a Owner's Manual 13 2 3 4 5 REAR PANEL LAYOUT (Continued) 6 Fused power connector for (enclosed) detachable IEC power cord. If needed, replace the fuse with same type, as follows: · For 120V units, use a 10A fast-blow fuse. POWER Switch: Press OFF to completely turn off power to the B15a subwoofer. Press AUTO ON to set the subwoofer to enter and exit standby mode automatically. Internal sense circuits will continually detect the presence of audio signals and will turn on the subwoofer when needed. After some time, when audio is no longer present, the same circuits will instruct the subwoofer to enter the standby mode to conserve energy. 7 CONNECTIONS Audio interconnection to your main amplifier or home theater controller can be any combination of unbalanced or balanced terminations, with full balanced connections offering the best noise rejection. Please read the following six applications (starting on the next page) before proceeding with the actual connections. Also, be sure to observe the following: · · Turn off all audio system power before making any connections. Read the owner's manuals that were included with your audio components to confirm their connection procedures. 14 REVEL PERFORMA B15a Owner's Manual REVEL PERFORMA B15a SUBWOOFER AND A STEREO POWER AMPLIFIER A common application is interconnecting the B15a subwoofer between a stereo preamplifier and the main power amplifier, as shown in Figure 10. How to connect the Revel Performa B15a subwoofer to a stereo preamplifier and the main power amplifier. Left Input Right Input Main Amplifier (rear) Left Right or To Main Speakers or Left Output Right Output Preamplifier (rear) or or B15a Rear Panel (split view) REVEL PERFORMA B15a 15 Owner's Manual CONNECTIONS (Continued) REVEL PERFORMA B15a SUBWOOFER AND A MULTI-CHANNEL CONTROLLER USING THE CONTROLLER'S CROSSOVER In this application, the B15a subwoofer's internal low-pass filter is bypassed and the multi-channel controller's crossover is used instead, as shown in Figure 11. Multi-Channel Controller (Decoder) (rear) FRONT/MAIN Left Output CENTER Output SURROUND/SIDE REAR Left Output Left Output Right Output SUB/LFE Output Right Output Right Output Figure 11. How to connect the Revel Performa B15a subwoofer to a home theater multi-channel controller using the controller's crossover. or NOTE: Set Controller to SUB "On" and set the cross-over in the controller to 80Hz. or Left Input Right Input Main Amplifier (rear) Left Right or or To Main Speakers or B15a Rear Panel (split view) *To SUB/LFE Output (if using optional Y-adapter) Use L or R Input and Increase Low Pass Level; *Or Use Optional Y-adapter, If Desired. NOTE: Use AUX OUTPUT to connect to INPUT on another B15. Also see Figure 12 on page 19. *To SUB/LFE Output (if using optional Y-adapter) 16 REVEL PERFORMA B15a Owner's Manual REVEL PERFORMA B15a SUBWOOFER AND A MULTI-CHANNEL CONTROLLER USING THE B15a's INTERNAL CROSSOVER In this application, the Revel Performa B15a subwoofer's internal crossover is used to interconnect a home theater multi-channel controller, as shown in Figure 12. How to connect the Revel Performa B15a subwoofer to a home theater multi-channel controller using the Revel Performa B15a subwoofer's internal crossover. Left Input Right Input Main Amplifier (rear) Left Right or To Main Speakers or Multi-Channel Controller (Decoder) (rear) FRONT/MAIN Left Output CENTER Output SURROUND/SIDE REAR Left Output Left Output Right Output SUB/LFE Output Right Output Right Output NOTE: Set Controller outputs to fullrange L/R Front and no SUB. or B15a Rear Panel (split view) or REVEL PERFORMA B15a 17 Owner's Manual CONNECTIONS (Continued) REVEL PERFORMA B15a SUBWOOFER WITHOUT HIGH-PASS CROSSOVER Revel strongly recommends using both a low-pass and high-pass crossover with any "main" left and right loudspeakers of any size. [. . . ] The resulting peaks can be corrected through the use of our powerful built-in parametric equalization. If you plan to use more than one subwoofer, try placing them both in one corner or use a modeling program or trial-anderror measurements to determine locations that will further minimize response dips due to standing wave cancellation. Placing other system loudspeakers in the listening room will also affect the way sound (below 300Hz) is reproduced. Just as is the case with subwoofers, use a modeling program or trialand-error measurements to determine the best locations Since the listening and loudspeaker locations are equally important, the trial-and-error process can be time-consuming. [. . . ]