AMS 1081 User Manual

Channel amplifier including 3u and 7u rack options

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1081 Channel Amplifier
Including 3U and 7U Rack Options
User Guide
527-230
Issue 3

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Table of Contents
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Summary of Contents for AMS 1081

  • Page 1 1081 Channel Amplifier Including 3U and 7U Rack Options User Guide 527-230 Issue 3...
  • Page 2: Table Of Contents

    Power Requirements Phantom Power Output Level Control Amplifier Controls EMI Filter Components Rear Panel Views Connector Details Connector Details Continued Specifications Service Information 1081 Recall Sheet - Horizontal Module 1081 Recall Sheet - Vertical Module User Guide Issue 3 Page i...
  • Page 3: Introduction

    Neve consoles such as the 8048. A look through the credits on today’s top selling CDs will reveal that these vintage consoles are still widely used to great effect and that the 1081 module has become a hugely popular design classic. This is why AMS Neve have resumed production of the 1081, using the original components and construction methods.
  • Page 4: Dimensions

    1081 Channel Amplifier Dimensions Dimensions Stand-alone Module Dimensions: Front panel 45mm x 305 mm (1.8 inches x 12 inches). Approx 300mm (12 inches) deep behind the front panel. Approx. Weight: 3kg (6.6 lbs) Rack Data 19" Rack Mounting Depth Height Approx.
  • Page 5: Power Requirements

    1081 Channel Amplifier Power Requirements Power Requirements Rated Voltage 100-230V AC 100-230V AC Rated Frequency 50-60 Hz 50-60Hz Rated Current 0.5A Max 0.8A Max Surge Current (In Rush) Cold 31.0A 31.0A Surge Current (In Rush) Hot 33.0A 33.0A Earth Leakage Current Approx 1.2mA...
  • Page 6: Phantom Power

    1081 Channel Amplifier Phantom Power Mains Fuse (rack units) The mains fuse is located in the IEC mains input connector on the rear of the 3U and 7U rack units. Secondary Protection Fuses (rack units) Secondary protection fuses for the 24V and 48V supplies are located behind the front panel on the power supply filter PCB SZN825-058 in both 3U and 7U rack units.
  • Page 7: Amplifier Controls

    1081 Channel Amplifier Amplifier Controls Amplifier Controls H.F. Controls: 5 switched frequencies, shelving or peaking curve, continuously variable 18dB cut or boost. H.F. Presence: 10 switched frequencies with continuously variable 18dB cut or LINE boost, high or low Q selection.
  • Page 8: Emi Filter Components

    RF fields could suffer, and if this is the case then the jumper links should be removed. The individual 1081 modules are offered for inclusion in the customers own housings. As such no claim is being made regarding the immunity of these units. This will be principally governed by the type of cabling, connectors and enclosure used.
  • Page 9: Rear Panel Views

    1081 Channel Amplifier Rear Panel Views Rear Panel Views MIC 1 LINE 1 O/P 1 AC M AINS I/P AUXILARY MIC 2 LINE 2 O/P 2 MIC 8 MIC 7 MIC 6 MIC 5 MIC 4 MIC 3 MIC 2...
  • Page 10: Connector Details

    1081 Channel Amplifier Connector Details Connector Details 1081 Stand-alone Wiring to 18 way Free Plug Mic I/P 0dBu Spare Switch Contact Spare Line I/P 0dBu Link Technical Solo Switch Contact Solo Earth Link -10dBu Unbalanced O/P 0dBu BAL O/P Solo O/P (unbalanced)
  • Page 11: Connector Details Continued

    1081 Channel Amplifier Connector Details Continued Connector Details Continued Rear of 1081 2 Module (3U) and 8 Module (7U) Racks 25 way D Auxiliary and XLR Wiring 25 way D-Type Wiring View Chassis Earth Unbalanced O/P -10dBu CH 1 Unbalanced 0V...
  • Page 12: Specifications

    1081 Channel Amplifier Specifications Specifications Microphone Input: Zin 300 or 1200 ohms switched, gain +80 to +10 dB in 5dB steps. Line Input: Zin 10k ohms bridging, gain +20 to -15dB in 5dB steps. Both inputs are balanced and earth-free.
  • Page 13: Service Information

    PL20048/5 Lower Presence Switch Assembly PL20049 LP/HP Filter Switch Assembly PL20050 Bass Switch Assembly AM3631 - 3U Rack: AM3631 2 CH 1081 Mainframe Assembly Detail SZN825-058 PSU Filter PCB SSN818-036 0V Stud Filter PCB SUN870-081 2CH I/P O/P Backplane SYN824-128...
  • Page 14: 1081 Recall Sheet - Horizontal Module

    1081 Channel Amplifier 1081 Recall Sheet - Horizontal Module 1081 Recall Sheet - Horizontal Module User Guide Issue 3 Page 12...
  • Page 15: 1081 Recall Sheet - Vertical Module

    1081 Channel Amplifier 1081 Recall Sheet - Vertical Module 1081 Recall Sheet - Vertical Module User Guide Issue 3 Page 13...
  • Page 43 Title: 2 Channel 1081 Chassis Wiring Schedule Nr: AM3631 Issue: 3 CABLE FROM:- ROUTING TO:- Code Type Colour Connector Location Signal Length Comment Connector Location 310-166 32/0.2 Green/Yellow 330-119 Stud 330-454 Chassis Safety 310-183 24/0.2 Green/Yellow 330-069 PSU1 Stud 330-454...
  • Page 55 Title: 8 Channel 1081 Chassis Wiring Schedule Nr: AM3630 Issue: 4 CABLE FROM:- ROUTING TO:- Code Type Colour Connector Location Signal Length Comment Connector Location 310-166 32/0.2 Green/Yellow 330-119 25cms Stud 330-454 Chassis Safety 310-183 24/0.2 Green/Yellow 330-069 PSU1 40cms...
  • Page 56 Title: 8 Channel 1081 Chassis Wiring Schedule Nr: AM3630 Issue: 2 CABLE FROM:- ROUTING TO:- Code Type Colour Connector Location Signal Length Comment Connector Location 310-033 7/0.2 Green Channel 3&4 Chassis 330-006 310-033 7/0.2 Green SUN870-081 Chassis 330-006 310-033 7/0.2 Green Channel 5&6...

Table of Contents