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essary. 6. Adjust AMBIENT THRESHOLD until the STATUS LED starts flashing amber, then adjust ACTIVITY THRESHOLD until amber stops flashing. 9 Module Setup, cont. Normal Mode All sources are affected by the gain adjustment process. Background music source will need to be routed through the main mixer inputs, which will be affected by the gain adjustment process. Refer to page 12 for illustration. Start with all POTS turned fully clockwise (AUX IN is not used in this mode). 1. Set MODE Switch to "SET" mode. 2. Set RELATIVE GAIN to the desired amount of signal gain you would like the balanced/unbalanced input to ride over the ambient level. 3. Set MAX BOOST to limit the maximum amount of signal gain for the whole system. 4. Adjust AMBIENT THRESHOLD until the STATUS LED starts flashing amber, then adjust ACTIVITY THRESHOLD until amber stops flashing. 5a. Using the chart and diagram on page 13, set the AMBIENT THRESHOLD to the dBspl level where automatic increases to the system volume would be desired, then set the MODE Switch to ‘Run’. - or 5b. If the live ambient noise level (while making these adjustments) is at the desired trip point, set the MODE Switch to the ‘Run’ position, and then adjust the AMBIENT THRESHOLD control to a point where the STATUS LED flashes green. 6. Adjust RAMP SPEED to desired settings. 7. Test the system’s response to noise and, if necessary, set the ACTIVITY THRESHOLD control higher if the maximum signal level is not achieved. Tweaking adjustments to MAX BOOST, RELATIVE GAIN, and RAMP SPEED controls may also be necessary. 10 11 Module Setup, cont. Bypass Mode Illustration 12 Normal Mode Illustration Module Setup, cont. Ambient Level Settings Use this table to estimate the general dBspl level of the area’s ambient noise if actual measurements are not available. Typical Ambient Noise Level Typical Environments Very High Noise 85-95 dB Speech Almost Impossible Contruction Site Machine Shop Noisy Manufacturing Printing Shop High Noise 75-85 dB Speech is Difficult Assembly Line Supermarket Transportation Waiting Room Shipping/Warehouse Medium Noise 65-75 dB Must Raise Voice to be Heard Noisy Office Restaurant Department Store Bank / Public Area Low Noise 55-65 dB Speech is Easy Doctor’s Office Hotel Lobby Hospital Quiet Office Specifications Gain (Boost): 0 dB to 22 dB (± 1 dB) Frequency Response: 5 Hz to 80 kHz (+0 / -3 dB) S/N (20 Hz - 20 kHz): -96 dBV Distortion: <0.007% Input Impedance: Aux Input: Unbalanced 10 k-ohms Unbalanced Input: 20 k-ohms Balanced Input: 20 k-ohms Output Impedance: Unbalanced Output: 300 ohms Balanced Output: 600 ohms Gain Ramp Speed: 1 dB/s to 20 dB/s Power: 12 V AC/0.4A Controls: Maximum Boost, Ramp Speed,Activity Threshold,Ambient Threshold, Aux Level, & Relative Gain Connector: RCA types & pluggable screw terminals Weight: 12 oz. Dimensions: 51/4" W x 3" H x 11/4" D Indicators: Bi-Color Status (Amber/Green); Power (Green) 13 Block Diagram 14 Limited Warranty The ANS501 is warranted to be free from defects in material or workmanship for two (2) years from the date of sale to the original purchaser.Any part of the product covered by this warranty that,with normal installation and use, becomes defective will be repaired or replaced by Bogen, at our option, provided the product is shipped insured and prepaid to: Bogen Factory Service Department, 50 Spring Street, Ramsey, NJ 07446, USA.The product will be returned to you freight prepaid.This warranty does not extend to any of our products that have been subjected to abuse, misuse, improper storage, neglect, accident, improper installation or have been modified or repaired or altered in any manner whatsoever, or where the serial number or date code has been removed or defaced. THE FOREGOING LIMITED WARRANTY IS BOGEN’S SOLE AND EXCLUSIVE WARRANTY AND THE PURCHASER’S SOLE AND EXCLUSIVE REMEDY.BOGEN MAKES NO OTHER WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, AND ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED AND EXCLUDED TO THE MAXIMUM EXTENT ALLOWABLE BY LAW. Bogen's liability arising out of the manufacture, sale or supplying of products or their use or disposition, whether based upon warranty, contract, tort or otherwise, shall be limited to the price of the product. In no event shall Bogen be liable for special, incidental or consequential damages (including, but not limited to, loss of profits, loss of data or loss of use damages) arising out of the manufacture, sale or supplying of products, even if Bogen has been advised of the possibility of such damages or losses. Some States do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you.This warranty gives you specific legal rights, and you may also have other rights which vary from State to State. Products that are out of warranty will also be repaired by the Bogen Factory Service Department -- same address as above or call ...