User manual B&K AVP 4090

[. . . ] Acknowledgments Manufactured under license from Dolby Laboratories. "Dolby", "Pro Logic", "AC3", and the double-D symbol are trademarks of Dolby Laboratories. © 1992-1997 Dolby Laboratories, Inc. DTS® is a registered trademark of Digital Theater Systems, L. L. C. , Motorola®, `Powered by Motorola'TM name and logo are trademarks of Motorola, Inc. © Copyright 1996 All Rights Reserved. [. . . ] No advanced star operations will operate. Page 18 Surround setup Always set up and calibrate your speakers immediately after connecting your preamplifier to your system. You need to set up the speakers to achieve the best, most accurate performance from your preamplifier. This is important because the preamplifier needs to "know" your speaker configuration to control your current system. Any time you change your speaker configuration, you should perform setup and then calibration on your preamplifier. When you are setting up your speakers, your preamplifier gives you several options to help you maximize your audio/video system. Since every system is unique, you can choose from menu options and try different combinations until the sound is exactly the way you want it. Channel mode explanation Channel Left / Right Mode/Option Large Small Description 80 Hz high pass filter off. Filters bass frequencies from front channels and sends it to the subwoofer (fc = 80 Hz @12 dB/Oct). Filters bass frequencies from the center channel and sends it to the subwoofer (fc = 80 Hz @12 dB/Oct). Use if you do not have a center channel speaker. Filters bass frequencies from rear channels and sends it to the subwoofer (fc = 80 Hz @12 dB/Oct). Use if you do not have rear channel speakers. Sends output to the subwoofer (fc = 80 Hz @24 dB/Oct). Page 19 Center Large Small None Surround Large Small None Subwoofer Yes Channel Mode/Option No Description No subwoofer. Sends all bass frequencies to the front left and right channels including the LFE channel. Removes SW BASS MENU. Bass Management Note: LFE = Low Frequency Effects channel (or . 1 channel) Option/mode Bass Normal Bass LFE Off SW Bass Normal Description LFE on. Bass frequencies and LFE are sent to the appropriate channels. Removes the LFE channel from the bass management summing circuitry. Adds bass to the subwoofer for any channel set to SMALL. Example: If the front speakers are set to SMALL, the bass frequencies go to the subwoofer, not the front speakers. SW Bass Ultra Allows for all channels to be summed to the subwoofer regardless of SMALL/LARGE speaker settings. Delay settings CTR DELAY - Center channel delay. The center channel has a variable delay that may be set from 0 ms to 5 ms. The surround channel delay is variable between 0 ms to 15 ms for Dolby Digital and 15 ms to 30 ms for Pro Logic. When changing the surround delay setting, only the Dolby Digital setting will be displayed. The Pro Logic setting is automatically 15 ms higher than the Dolby Digital setting. [. . . ] Less than . 02% Unprocessed Less than . 05% Front Less than . 12% Rear Less than . 05% Subwoofer 89 dB, CCIR 2k Weighted, max level 50k Ohms 221 Ohms -12. 5 dB 8 6 2 sets Signal to Noise Ratio: Input Impedance: Output Impedance: Noise Test Reference Level: Surround Outputs non-inverting Audio Inputs Audio Outputs (extra L & R) non-inverting Video Specifications Frequency Response (-3, -3 dB): Buffered Input Impedance: Buffered Output Impedance: Maximum Input Level: Maximum Output Level: Video Inputs / Outputs 20 Hz - 10 MHz 75 Ohms 75 Ohms 2 V R. M. S. 4/4 Tuner Specifications FM Section ;De-emphasis 75 sec * Frequency Range: Total Harmonic Distortion: Frequency Response (-1, -3 dB) Capture Ratio: IHF (Usable) Sensitivity: Mono/Stereo Sensitivity: Alternate Channel Selectivity: Signal to Noise Ratio: Antenna Input Impedance: 87. 50 - 107. 90 MHz in 50 kHz steps Less than 0. 25% 20 Hz - 15 kHz 2 dB 12 dBf 15/35 dBf 65 dB 70 dB, A Weighted 75 Ohms Page 36 AM Section * Frequency Range: Total Harmonic Distortion: Sensitivity: Selectivity: 520 - 1620 kHz in 10 kHz steps Less than 0. 3% 28 dBf 30 dB * USA and Canada versions. Other versions have 50 sec De-emphasis with 50 kHz tuning steps for FM and 9 kHz tuning steps for AM. Digital Inputs Line Voltage Replacement fuse Shipping weight Dimensions 6 120/220/240 VAC switchable Line fuse - 0. 5 A / 250 V fast blow 20 lb width 17 inches height 3¾ inches depth 12 inches Care and cleaning Under normal use, the preamplifier will not require any special care. Over time you may wish to clean the exterior of the unit by wiping it with a damp cloth to remove any dirt or dust that accumulates on it. [. . . ]