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8051 5.1 Compressor User Guide
AMS
NEVE
8051
5.1 Compressor
User Guide
527-357
Issue2
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8051 5.1 Compressor User Guide Contents Introduction 1 Dimensions 2 Rack Mounting and Cooling 2 Power Requirements 2 Mains Supply 2 Rear Panel Connectors 3 Compressor Controls 4 LFE Filter (Filter to Channel) 4 Bypass 5 Sidechain Link 6 Sidechain Filter 6 Control Link 7 SC Trims and Threshold 8 EXT Control 9 Threshold 10 Gain Makeup 10 Ratio 10 Attack 11 Recovery 11 Gain Reduction Meters 11 Key Input 12 Key Filter 12 Bias Control 12 Output Level 12 Power 12 Mastering Compressor Controls (AM5292)
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8051 5.1 Compressor User Guide Introduction The 8051 is an analogue compressor that provides six transformer balanced audio paths complemented by two sidechains and a key input. Input and output to the sidechains is assignable to and from the six channels. Assignable LFE filters on the input and sidechains along with the key input provide integrated bass management. Flexible sidechain routing, trimming and filtering make this a powerful and responsive tool for surround mixing. The 8051 uses the
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8051 5.1 Compressor User Guide Dimensions Units U Depth Height Approx. Weight mm (inches) mm (inches) kg (lbs) 8051 Compressor (AM4851 and AM5292) 3 500 (20) 135 (5.25) 10.5 (23) not including mains plug Rack Mounting and Cooling The rack units should be installed in a 19" cabinet with access to the front and rear. No specific air conditioning is required for the racks, provided that there is a free flow of air through the rack from front to back, and that the ambient air is maintained below 30
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8051 5.1 Compressor User Guide Rear Panel Connectors Mating connectors are not supplied with these units. CONTROL VOLTAGEI/O KEYINPUT INPUT6 INPUT5 INPUT4 INPUT3 INPUT2 INPUT1 PUSH PUSH PUSH PUSH PUSH PUSH PUSH WARNING DISCONNECTMAINSLEAD TOISOLATEUNIT. NOUSERSERVICEABLE CHASSIS INTERNAL 0V PARTSINSIDE OUTPUT6 OUTPUT5 OUTPUT4 OUTPUT3 OUTPUT2 OUTPUT1 HAZARDOUSVOLTAGESINSIDE PLEASESEE REFERTOMANUALS MANUAL FUSE1.6AA/SCERAMIC INPUTVOLTAGE100-250VAC INPUTFREQUENCY47-63Hz CONTROL VOLTAGE I/O - 15 P
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8051 5.1 Compressor User Guide Compressor Controls 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 6ms 6ms 6ms 6ms 6ms 6ms 6ms 6ms 6ms 6ms 6ms 6ms 6ms 6ms 6ms 6ms 6ms 6ms 6ms 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 100 100 100 100 100 100 1 100 100 100 100 100 100 100 100 100 100 100 100 00 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 4ms 4ms 4ms 4ms 4ms 4ms 4ms 4ms 4ms 4ms 4ms 4ms 4ms 4ms 4ms 4ms 4ms 4ms 4ms FILTER TO CHANNEL 8ms 8ms 8ms 8ms 8ms 8ms 8ms 8ms 8ms 8ms 8ms 8ms 8m
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8051 5.1 Compressor User Guide Bypass All channels have relay bypass. Bypass is from the 100 1 100 100 100 100 100 00 FILTER TO CHANNEL 8 80 80 80 80 80 80 0 1 120 120 120 120 120 120 20 Hz output of the LFE filter to the input of the Output IN/OUT 5 1 2 3 4 6 Level Control *. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 BYPASS 1 5 2 3 4 6 MST M 15 15 15 1 15 15 15 5 15 15 15 1 15 15 15 5 15 15 1 15 15 15 15 5 15 1 15 15 15 15 15 5 SIDECHAIN LINK 1/2 5/6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 123456 A A A A A A 123456 1 15
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8051 5.1 Compressor User Guide Sidechain Link The sidechain link buttons route audio from each channel's sidechain audio path into one or both of the sidechain timing circuits. If a single channel's SC LINK A or B button is pressed, that channel will behave as a mono compressor. If another channel is then linked to the same sidechain, the timing circuit responds to whichever channel is larger at any moment (taking into account the setting of the SC trim controls). The resulting control voltage i
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8051 5.1 Compressor User Guide Control Link While the SC link buttons control the audio inputs to 100 100 100 100 100 100 100 FILTER TO CHANNEL 80 80 80 80 80 80 80 1 120 120 120 120 120 120 20 Hz IN/OUT each sidechain, the CV link buttons choose where 1 2 3 4 5 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 BYPASS the D.C. control voltage generated by each 1 2 3 4 5 6 MST M sidechain is routed. The CV link buttons also 1 15 15 15 15 15 15 5 1 15 15 15 15 15 15 5 15 15 15 15 15 15 15 1 15 15 15 15 15 15 5 SIDECH
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8051 5.1 Compressor User Guide SC Trims and Threshold Thresholds for each channel are determined by 100 100 100 100 100 100 100 FILTER TO CHANNEL 8 80 80 80 80 80 80 0 1 120 120 120 120 120 120 20 Hz sidechain path gain which is applied in two stages. IN/OUT 1 2 3 4 5 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 BYPASS 1 The two main threshold controls are first assigned to 2 3 4 5 6 MST M 1 15 15 15 15 15 15 5 1 15 15 15 15 15 15 5 15 15 15 15 15 15 15 1 15 15 15 15 15 15 5 SIDECHAIN LINK each channel with th
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8051 5.1 Compressor User Guide EXT Control The EXT buttons provide an insert point in the control voltage signal, after the bias control but before routing back to the channels. During normal operation the control voltages generated by the sidechain are internally connected to the CV Link switched for routing back to the channels. In EXT mode the control voltage is taken from the rear connector instead of the sidechain outputs, allowing the unit to be slaved from a second 8051 or 33609. There
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8051 5.1 Compressor User Guide 4 4 4 4 4 4 4 4 4 4 4 6ms 6ms 6ms 6ms 6ms 6ms 6ms 6ms 6ms 6ms 6ms 8 8 8 8 8 8 8 8 8 8 8 4ms 4ms 4ms 4ms 4ms 4ms 4ms 4ms 4ms 4ms 4ms 8ms 8ms 8ms 8ms 8ms 8ms 8ms 8ms 8ms 8ms 8ms 0 0 0 0 0 0 0 0 0 0 0 GAINREDUCTION A A A A A A A A A A A 12 12 12 12 12 12 1 12 12 12 12 12 2ms 2ms 2 2ms 2ms 2ms 2ms 2ms 2ms 2ms 2ms ms 16ms 16ms 16ms 16ms 16ms 16ms 16ms 16ms 16ms 16ms 16ms 4 4 4 4 4 4 4 4 4 4 4 16 16 16 16 16 16 16 16 16 16 16 8 8 8 8 8 8 8 8 8 8 8 12 1 12 12 12 12 12 12
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8051 5.1 Compressor User Guide 4 4 4 4 4 4 4 4 4 4 4 6ms 6ms 6ms 6ms 6ms 6ms 6ms 6ms 6ms 6ms 6ms 8 8 8 8 8 8 8 8 8 8 8 4ms 4ms 4ms 4ms 4ms 4ms 4ms 4ms 4ms 4ms 4ms 8ms 8ms 8ms 8ms 8ms 8ms 8ms 8ms 8ms 8ms 8ms 0 0 0 0 0 0 0 0 0 0 0 GAINREDUCTION A A A A A A A A A A A 12 12 1 12 12 12 12 12 12 12 12 12 2ms 2ms 2ms 2ms 2ms 2ms 2ms 2ms 2 2ms 2ms ms 16ms 16ms 16ms 16ms 16ms 16ms 16ms 16ms 16ms 16ms 16ms 4 4 4 4 4 4 4 4 4 4 4 16 16 16 16 16 16 16 16 16 16 16 8 8 8 8 8 8 8 8 8 8 8 12 1 12 12 12 12 12 12
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8051 5.1 Compressor User Guide Key Input 4 4 4 A Key Input is provided to allow adjustable control from an external 0 0 0 KEYI/P 8 8 8 4 4 4 A SIDE source. Like the sidechains the key input has a threshold level 12 1 12 2 8 8 8 CHAIN SEL B 16 16 16 12 1 12 2 control ranging from -20 to +16 to set the intended level at which --20 -2 20 0 + + +16 16 1 16 IN/OUT 100Hz compression control is required. THRESHOLDdBu It can be used in several ways: A 8051 A/B 0 0 0 DISCRETE DISCRETE DISCRETE BIAS MULTI
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8051 5.1 Compressor User Guide Mastering Compressor Controls (AM5292) The 8051 Mastering Compressor is slightly different to the standard 8051 in 2 ways: It has 21 position detented pots for the Trim and Bias controls to aid total mechanical recall of the unit. It has -1dB switches fitted to the Threshold and Gain Make-Up controls to allow for more accurate settings, for example, in a mastering application the entire range of the switches can be turned from 2dB steps into 1dB steps by the se
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8051 5.1 Compressor User Guide 8051 Compressor - 88R(S) Console mounted AM5052 100 100 100 100 100 1 100 100 100 100 100 100 100 100 100 00 FILTER TO CHANNEL 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 Hz IN/OUT 1 2 3 4 5 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 BYPASS 1 2 3 4 5 6 MST M 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 1
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8051 5.1 Compressor User Guide I/O Wiring (AM5052 & AM5265) 56 Way Free Plug Varicon Signal Signal Name Pin Number Hi Lo Scn 1 1 Left Input C J D 2 3 Centre Input P V K 3 2 Right Input U Z d 4 4 S Input Y c f 5 5 LS Input s m j 6 6 RS Input x t n 7 1 Left Output CC y JJ 8 3 Centre Output MM HH NN 9 2 Right Output B F A 10 4 S Output L R E 11 5 LS Output S W a 12 6 RS Output X b e 13 Key Input r l h 14 v p k 15 z u DD 16 LL EE KK Issue 2 Page 15
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8051 5.1 Compressor User Guide Specifications I/O The key input and LFE filter inputs are electronically balanced with an input impedance of 10kohms. All other inputs are transformer balanced with 3.6kohms input impedances. All outputs are electronically balanced post the output transformers, with maximum output of +26dBu into 600ohms. The unit is calibrated for bridging loads greater than 10kohms. Control Voltage I/O is provided for linking multiple units, or linking to 33609 compressors. Conne
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8051 5.1 Compressor User Guide Issue 2 Page 17
