MODEL 1046 ® A Harman International Company OPERATION MANUAL MODE D'EMPLOI BEDIENUNGSANLEITUNG MODO DE EMPLEO WARNING CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN FOR YOUR PROTECTION, PLEASE READ THE FOLLOWING: WATER AND MOISTURE: Appliance should not be used near water (e.g. near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool, etc). Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through openings. POWER SOURCES: The appliance should be connected to a power supply only of the type described in the operating instructions or as marked on the appliance. GROUNDING OR POLARIZATION: Precautions should be taken so that the grounding or polarization means of an appliance is not defeated. POWER CORD PROTECTION: Power supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords at plugs, convenience receptacles, and the point where they exit from the appliance. SERVICING: To reduce the risk of fire or electric shock, the user should not attempt to service the appliance beyond that described in the operating instructions. All other servicing should be referred to qualified service personnel. FOR UNITS EQUIPPED WITH EXTERNALLY ACCESSIBLE FUSE RECEPTACLE: Replace fuse with same type and rating only. A T T E N T I O N : RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR W A R N I N G : TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE The symbols shown above are internationally accepted symbols that warn of potential hazards with electrical products. The lightning flash with arrowpoint in an equilateral triangle means that there are dangerous voltages present within the unit. The exclamation point in an equilateral triangle indicates that it is necessary for the user to refer to the owner's manual. These symbols warn that there are no user serviceable parts inside the unit. Do not open the unit. Do not attempt to service the unit yourself. Refer all servicing to qualified personnel. Opening the chassis for any reason will void the manufacturer's warranty. Do not get the unit wet. If liquid is spilled on the unit, shut it off immediately and take it to a dealer for service. Disconnect the unit during storms to prevent damage. U.K. MAINS PLUG WARNING A moulded mains plug that has been cut off from the cord is unsafe. Discard the mains plug at a suitable disposal facility. NEVER UNDER ANY CIRCUMSTANCES SHOULD YOU INSERT A DAMAGED OR CUT MAINS PLUG INTO A 13 AMP POWER SOCKET. Do not use the mains plug without the fuse cover in place. Replacement fuse covers can be obtained from your local retailer. Replacement fuses are 13 amps and MUST be ASTA approved to BS1362. ELECTROMAGNETIC COMPATIBILITY This unit conforms to the Product Specifications noted on the Declaration of Conformity. Operation is subject to the following two conditions: · this device may not cause harmful interference, and · this device must accept any interference received, including interference that may cause undesired operation. Operation of this unit within significant electromagnetic fields should be avoided. · use only shielded interconnecting cables. SAFETY INSTRUCTIONS NOTICE FOR CUSTOMERS IF YOUR UNIT IS EQUIPPED WITH A POWER CORD. WARNING: THIS APPLIANCE MUST BE EARTHED. The cores in the mains lead are coloured in accordance with the following code: GREEN and YELLOW - Earth BLUE - Neutral BROWN - Live DECLARATION OF CONFORMITY Manufacturer's Name: Manufacturer's Address: declares that the product dbx 1046 conforms to the following Product Specifications: Safety: EN 60065 (1993) IEC 65 (1985) with Amendments 1, 2, 3 EMC: EN 55013 (1990) EN 55020 (1991) dbx Professional Products 8760 S. Sandy Parkway Sandy, Utah 84070, USA As colours of the cores in the mains lead of this appliance may not correspond with the coloured markings identifying the terminals in your plug, proceed as follows: · The core which is coloured green and yellow must be connected to the terminal in the plug marked with the letter E, or with the earth symbol, or coloured green, or green and yellow. · The core which is coloured blue must be connected to the terminal marked N or coloured black. · The core which is coloured brown must be connected to the terminal marked L or coloured red. This equipment may require the use of a different line cord, attachment plug, or both, depending on the available power source at installation. If the attachment plug needs to be changed, refer servicing to qualified service personnel who should refer to the table below. The green/yellow wire shall be connected directly to the unit's chassis. Supplementary Information: The products herewith comply with the requirements of the EMC Directive 89/336/EEC (1989), as ammended by the CE marking directive 93/68/EEC (1993). dbx Professional Products President 8760 S. Sandy Parkway Sandy, Utah 84070, USA April 22, 1996 European Contact: Your Local dbx Sales and Service Office or International Sales Office 68 Sheila Lane Valparaiso, Indiana 46383, USA Tel: (219) 462-0938 Fax: (219) 462-4596 CONDUCTOR L N LIVE NEUTRAL WIRE COLOR Normal BROWN BLUE Alt BLACK WHITE GREEN E EARTH GND GREEN/YEL WARNING: If the ground is defeated, certain fault conditions in the unit or in the system to which it is connected can result in full line voltage between chassis and earth ground. Severe injury or death can then result if the chassis and earth ground are touched simultaneously. ® MANUAL CONTENTS ENGLISH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 FRANÇAIS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 DEUTSCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 ESPAÑOL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 ENGLISH CONTENTS INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 CONNECTING THE 1046 TO YOUR SYSTEM . . . . . . . . . . . . . . . . . . . . 3 OPERATING CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 REAR PANEL OPERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 APPLICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 INSTALLATION CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Manual Contents 1 ® Introduction Congratulations and thank you for your purchase of the dbx 1046 Quad Compressor Limiter. The dbx 1046 is a high performance multifunctional unit designed to deliver all the flexibility and power that a professional user demands. The dbx 1046 incorporates the new advanced dbx V2TM VCA for high system performance. We recommend you take a moment to read through this Operation manual. It provides information that will assist you in system set-up. Inspection Verify that the 1046's package contains the following: ·1046 Unit (according to Model number marked on package) ·AC Power Cord ·Operation Manual ·Registration Card ·4 Rack Mount Screws and Washers If any of these items are missing, contact dbx customer service at (801) 568-7660. Warranty 1. The warranty registration card that accompanies this product must be mailed within 30 days after purchase date to validate this warranty. Proof-of-purchase is considered to be the burden of the consumer. 2. dbx warrants this product, when bought and used solely within the U.S., to be free from defects in materials and workmanship under normal use and service. 3. dbx liability under this warranty is limited to repairing or, at our discretion, replacing defective materials that show evidence of defect, provided the product is returned to dbx WITH RETURN AUTHORIZATION from the factory, where all parts and labor will be covered up to a period of two years. A Return Authorization number must be obtained from dbx by telephone. The company shall not be liable for any consequential damage as a result of the product's use in any circuit or assembly. 4. dbx reserves the right to make changes in design or make additions to or improvements upon this product without incurring any obligation to install the same additions or improvements on products previously manufactured. 5. The foregoing is in lieu of all other warranties, expressed or implied, and dbx neither assumes nor authorizes any person to assume on its behalf any obligation or liability in connection with the sale of this product. In no event shall dbx 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. 2 Introduction ® Connecting the 1046 to your system To connect the 1046 to your system, refer to the following steps: · Turn off all equipment before making any connections. · Mount the 1046 in a rack Install the 1046 in a rack with the rack screws provided. It can be mounted above or below anything that does not generate excessive heat. Ambient temperatures should not exceed 113° F (45° C) when equipment is in use. Although the unit is shielded against radio frequency and electromagnetic interference, extremely high fields of RF and EMI should be avoided. · Make audio connections via XLR, 1/4" TRS, or 1/4" TS plugs. Both types of connectors for the inputs and outputs can be used for balanced or unbalanced connections. The use of more than one connector at a time for the input/output pair could unbalance balanced lines, cause phase cancellations, short a conductor to ground, or cause damage to other equipment connected to the 1046. · Apply power to the 1046 Connect the AC power cord to the AC power receptacle on the back of the unit. Route the AC power cord to a convenient power outlet away from audio lines. The unit may be turned on and off via the rear panel power switch or from a master equipment power switch. Operating Controls Front Panel GAIN REDUCTION dB 30 25 20 15 10 6 3 1 -24 INPUT / OUTPUT LEVEL dBu -18 -12 -6 0 +6 +12 +18 THRESHOLD GAIN REDUCTIO 30 25 20 15 10 + -20 -30 -10 CHANNEL ONE 0 2:1 +10 1.5:1 OverEasy 3:1 4:1 -10 8:1 I/O Meter 0 +10 +10 +6 Bypass -20 dB +20 OUTPUT GAIN +4 +12 +14 -20 -10 CHANNEL 0 +10 1.5 OverEasy PROFESSIONAL PRODUCTS -40 dBu +20 THRESHOLD +20 -30 Stereo Couple dBu OFF PeakStopPlus -40 dBu +20 THRESHOLD 1:1 RATIO :1 COMPRESSOR LIMITER Gain Reduction Meter - This 8 stage meter shows the amount of gain reduction due to both compression and/or Intelligent Predictive LimitingTM, displaying gain reduction from 0 to 30 dB. Compressor Threshold Control - This control sets the level above which compression occurs, and has a 60 dB range. Connecting the 1046 to your system 3 ® OverEasy® Switch - OverEasy® provides a smooth transition from the compressor's linear region to the compressed region. This smooth transition greatly reduces compression artifacts and allows higher compression ratios while still maintaining the natural characteristics of the signal. The switch lights to indicate OverEasy® processing is enabled. When conventional hard knee processing is desired, disable the OverEasy® function. See Figure 1 below. 1:1 Unity 1:1 +20 RED Above Threshold +20 OUTPUT LEVEL (dB) OUTPUT LEVEL (dB) +15 +10 2:1 4:1 +15 +10 2:1 4:1 +5 0 -5 -10 -15 GREEN Below Threshold 20:1 :1 Rotation Point Threshold +5 0 -5 RE A :1 E MB R RED Above Threshold -10 -15 G EN OverEasy Range Below Threshold -15 -10 -5 0 +5 +10 +15 +20 -15 -10 -5 0 +5 +10 +15 +20 INPUT LEVEL (dB) INPUT LEVEL (dB) Figure 1: Hard Knee Compression Curve and OverEasy® Compression Curve. Compressor Ratio Control - This control selects the ratio between input and the output levels for signals above the level set by the COMPRESSION THRESHOLD control. It is adjustable between 1:1 and :1. Note, when OverEasy® processing is selected, the ratio transitions smoothly from the linear to the compressed region. As the signal exceeds the threshold, the ratio approaches the ratio set by the COMPRESSOR RATIO control. Figure 2 shows the effect of 2:1 compression on a signal as it rises above and falls below the threshold. Below the threshold the signal is not affected. Above the threshold, the output signal increases by only half of the increase (in dB) of the input signal level. In other words, with a 2 dB increase in input level, the output increases by only 1 dB, hence the 2:1 compression ratio. Signal Level (dBu) 10 0 -10 -20 -30 -40 Below Threshold Time Inp ...