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A 1/4" TRS jack may be used to achieve an impedance balanced output. Maximum balanced output level is +21 dBu. Balanced output impedance is 102 . . UNBALANCED OUTPUT: Accepts a 1/4” plug (see section on installation for wiring connections). Connections are unbalanced. Maximum unbalanced output level is +21 dBu. Output impedance is 51 . unbalanced. 8SR Series ATTENTION: DO NOT USE BOTH THE BALANCED AND UNBALANCED INPUT/OUTPUT JACKS TO A CHANNEL AT THE SAME TIME. Using more than one connector at a time for the input/output pair can unbalance balanced lines, cause phase cancellation, short a conductor to ground, or cause damage to other equipment connected to the equalizer. Maintenance and service Other than keeping the unit clean and occasionally checking the connectors and cables to the unit for integrity, there is no maintenance necessary for DOD equalizers. There are NO user serviceable parts inside the units. Opening the chassis will void the warranty. All service and repair must be performed by the factory or an authorized service center for the warranty to remain in service. Should a problem arise with the equalizer, please contact your authorized DOD Electronics dealer for return/repair procedures. Specifications Frequency Response: 20Hz to 20kHz, =0/-0.5 dB Low Cut Filter: 12 dB/ octave roll-off, 3 dB down at 50 Hz switchable in or out. Frequency Center Tolerance: 5% Control Range: 12 dB cut/ boost Recommended Operating Level: -10 dBV to +4 dBu Input Impedance: 40k . balanced, 20k . unbalanced Maximum Output Level: +21 dBu (balanced or unbalanced) Input Level Control: +/-12 dB Input Level Indicator: LED bar graph; -10,0,+10, and +17 Harmonic Distortion: .006% @ 1 kHz S/N Ratio: Greater than 90 dB (ref. 0.0775Vrms) Electronic Switching: In/Out and Filter switches (FET type) Power Requirements: 100/120/220-230/240 VAC, 50/60 Hz @ 18 watts Dimensions 430 and 431: 1.75”x6”x19” Dimensions 231, 830, and 831: 3.5”x6”x19” SR Series 9 DOD WARRANTY 1. The warranty registration card must be mailed within ten days after purchase date to validate this warranty. 2. DOD warrants this product, when used solely within the U.S., to be free from defects in material and workmanship under normal use and service. 3. DOD Electronics liability under this warranty is limited to repairing or replacing defective materials that show evidence of defect, provided the product is returned through the original dealer, where all parts and labor will be covered up to a period of three (3) years. The company shall not be responsible for any consequential damage as a result of the products use in any circuit or assembly. 4. Proof of date of purchase is considered to be the burden of the consumer. 5. DOD reserves the right to make changes in design or make improvements upon this product without incurring any obligation to install the same on PRODUCTS PREVIOUSLY MANUFACTURED. 6. The foregoing is in lieu of all other warranties, either expressed or implied, and DOD neither assumes nor authorizes any person to assume for it any obligation or liability in connection with the sale of this product. In no event shall DOD or its dealers be liable for special or consequential damages or from any delay in the performance of this warranty due to causes beyond their control. 10SR Series SR 430QX SR 431QX SR 830QX SR 831QX SR 231QX DECLARATION OF CONFORMITY Manufacturer’s Name: DOD Electronics Corporation Manufacturer’s Address: 8760 S. Sandy Parkway Sandy, Utah 84070, USA declares that the products: Product Name: SR Series Equalizers Product Options: All conform to the following product specifications: Safety: EN 60065 (1993) IEC65 (1985) with Amendments 1,2,3 EMC: EN 55013 (1990) EN 55020 (1991) Supplementary Information: The products herewith comply with the requirements of the Low Voltage Directive 73/23/EEC and the EMC Directive 89/336/EEC as amended by directive 93/68/EEC. DOD Electronics Corporation President of DOD 8760 S. Sandy Parkway Sandy, Utah 84070, USA Effective: 11/24/97 European Contact: Your Local DOD Sales and Service Office or International Sales Office 8760 S. Sandy Parkway Sandy, Utah 84070, USA Tel (801) 568-7638 Fax (801) 568-7642 VISIT DOD ELECTRONICS ON THE WORLD WIDE WEB AT HTTP:// WWW. DOD. COM DOD ELECTRONICS CORPORATION 8760 SOUTH SANDY PARKWAY SANDY,UTAH 84070 TELEPHONE 801-566-8800 FAX 801-566-7005 INTERNATIONAL DISTRIBUTION 8760 SOUTH SANDY PARKWAY SANDY,UTAH 84070 TELEPHONE 801-568-7638 FAX 801-568-7642 DOD IS A REGISTERED TRADEMARK OF HARMAN MUSIC GROUP INC. © 1998 DOD ELECTRONICS CORPORATION DOD 18-2160-C ...

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