User manual BBE SOUND 822

[. . . ] The 822 incorporates Constant-Q circuitry with a 5% center frequency accuracy. Special features include variable Low and High pass filters, selectable range ±6dB or ±12dB, balanced and unbalanced input/output connectors, RFI filters, variable level control, passive bypass switch, PEAK LED, ground lift switch. The EQA215 incorporates Constant-Q circuitry with a 5% center frequency accuracy. [. . . ] Constant-Q graphic equalizers were developed to fill the sound professional's need for greater control over sound shaping with less interaction between sliders. The curve traced out by the slider positions on Constant-Q designs indeed represent the actual change to the frequency response. On conventional designs they do not. Only for 822 and EQA 231 FRONT AND REAR PANELS EQA231 3 FRONT AND REAR PANELS EQA215 822 1. Power Switch This switch is pressed to turn power ON, pressing the switch again turns the power off. Always turn on your equalizer BEFORE your power amplifiers are turned on, and always turn off equalizer AFTER your power amplifiers have been turned off. 2. Filter Level Controls Each of these sliders control the output level of each of the 31 (or 15) bandpass filters. Center detent position is grounded for guaranteed flat response. 3. Filter Range Switch & Indicators The gain range of the filter sliders is switchable (as a group) from +/-6dB to +/-12dB for maximum boost/cut capability. When this switch is in the "OUT MOST" position, at 6dB, the green LED will illuminate. As the repair turnaround time is minimal, we request that the unit be sent to BBE Sound, Inc. We also need to add reliability data to our files so that future revisions may be undertaken, if necessary, to improve the product. If unit has been purchased outside the US, please contact your national distributor. Warranty Warranty registration of the unit to BBE Sound, Inc. It is strongly recommended that you retain a copy of the bill of sale for future reference. IT IS THE SOLE RESPONSIBILITY OF THE END USER TO PROVIDE THE BILL OF SALE OR OTHER MEANS OF PROOF OF PURCHASE TO VALIDATE THE WARRANTY IF WARRANTY SERVICE IS REQUESTED. The BBE GRAPHIC EQUALIZER is warranted against defects in material and workmanship for a period of two (2) years from date of purchase from BBE Sound Inc. During this period, we will repair units free of charge providing that they are shipped prepaid to BBE Sound, Inc. , 5381 Production Drive, Huntington Beach, CA 92649. All charges related to non-UPS shipping, including customs clearance, will be billed. The warranty will be honored for the longer of either 90 days from the date of any service or the remainder of the original 2 Year factory warranty. The equipment has been electrically damaged by improper connection or attempted repair by the customer or a third party. The bill of sales indicates that the purchase date of the equipment is not within the warranty period. [. . . ] All non-warranty repairs are warranted for a period of 90 days from the date of service. Should the unit fail to operate for any reason, our sole obligation is to repair it as described above. DO NOT RETURN ANY PRODUCT TO THE ABOVE ADDRESS WITHOUT INSTRUCTIONS AND AUTHORIZATION ISSUED BY THE ABOVE LOCATION. Maintenance Maintenance of the BBE GRAPHIC EQUALIZER is limited to proper cleaning of the unit with mild household cleaner such as Formula 409TM or WindexTM. [. . . ]