AMP-S8 Series+ (DA, SDA, HDA, and MDA Models) Multi-Format Analog/Digital Audio Monitor 1U or 2U with HD-SDI, SD-SDI, AES, ANALOG Inputs, HD-SDI, SD-SDI, AES, ANALOG Outputs, LCD Display, Eight 53-Segment Level Meters, and Phase Indication Document P/N 821640 Rev-B User Manual CONTENTS Title and Contents .............................................................. 1 Important Safety Instructions and Introduction ................................... 2 Section 1: General Features and Specs ................
AMP-S8 Series+ User Manual P/N 821640 Rev-B Important Safety Instructions 1) Read these instructions. 2) Keep these instructions. 3) Heed all warnings. 4) Follow all instructions. 5) Do not use this apparatus near water. 6) Clean only with dry cloth. 7) Do not block any ventilation openings. Install in accordance with the manufacturer's instructions. 8) Do not install near any heat source such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
AMP-S8 Series+ User Manual P/N 821640 Rev-B Sect. 1: General Features and Specifications Section 1 General Features and Specifications Quick Start Guide Description Features Applications Specifications Installation Wohler AMP-S8 Series+ Quick Start Guide Use the information below to quickly set up your Wohler AMP-S8 Series+ product for immediate use. The illustration below is provided to help you locate and identify the programming buttons described in this quick start guide.
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 1: General Features and Specifications AMP-S8 Series+ Powered Analog/Digital Audio Monitor Description The AMP-S8 Series+ audio monitoring products are a complete, exceptionally high quality SD-SDI/HD-SDI, AES/EBU and Analog stereo audio monitoring solution. The AMP-S8 Series+ comprehensive monitoring features are available in either a compact one (1U AMP1) or two (2U AMP2) rackspace cabinet.
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 1: General Features and Specifications Applications The AMP-S8 Series+ is ideally suited to provide high quality multi-channel digital and analog audio monitoring in a very compact form. Ideal for use in VTR bays, mobile production vehicles, teleconferencing installations, multimedia systems, satellite links, cable TV facilities, and on-air radio studios. Designed and manufactured in the U.S.A.
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 1: General Features and Specifications Installation Mounting The unit should be mounted where convenient for operating persons, ideally at approximately ear level for best high frequency response. Its superior magnetic shielding eliminates concerns about locating it adjacent to most types of CRT monitors, including even high-resolution color monitors.
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2 Operation Front Panel Features Rear Panel Features Introduction to the User Interface User Interface Features User Interface Function Guide NOTE: Throughout the manual, the following terms are used to refer to Serial Digital (SDI) signals: • SD-SDI = refers only to standard SDI (270 Mbps). • HD-SDI = refers only to high-definition SDI (1.5 Gbps). • SDI = refers to either standard SDI (SD-SDI, 270 Mbps) or high defintion SDI (HD-SDI, 1.5 Gbps).
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation Front Panel Features Please refer to Figure-2a on the facing page to familiarize yourself with the front panel controls and indicators of the AMP-S8 Series+ units. The following sections describe the functions of each of the various controls and indicators found on the front panel and are referenced, by number, to Figure-2a.
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation AMP2-S8 AMP1-S8 Figure-2a: Front Panel Features © 2006 Wohler Technologies Inc.
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation Rear Panel Features Please refer to Figure-2b and Figure-2c on the following pages to familiarize yourself with the rear panel features of the AMP-S8 Series+ units. The following sections describe the functions of each of the various features found on the rear panels and are referenced, by letter, to Figure-2b and Figure-2c.
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation AMP2-S8SDA, HDA, or MDA AMP2-S8DA Figure-2b: Rear Panel Features © 2006 Wohler Technologies Inc.
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation Rear Panel Features F SDI Re-Clocked Output Connector (SDA, HDA, and MDA Models only) This connector outputs a re-clocked copy of the SD-SDI or HD-SDI signal fed to the SDI Input Connector (Item E) selected for monitoring (IN 1 or IN 2). However, when an SDI input source is not selected for monitoring, the re-clocked output will monitor the SDI IN 2 input by default.
AMP-S8 Series+ User Manual P/N 821640 Rev-B AMP1-S8SDA, HDA, or MDA AMP1-S8DA Figure-2c: Rear Panel Features © 2006 Wohler Technologies Inc.
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation Rear Panel Features J Analog Input Connector This female DB-25 connector accepts standard balanced, line level analog signals. See diagram below for pin-out information. K Metered Analog Output Connector This DB-25 connector outputs analog signals as de-embedded from the selected sources or downmix, which are eligible for conversion to analog. See the diagram under Item J above for pin-out information.
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation Rear Panel Features N O AES Unbalanced Output (From SDI Input) Connector (Standard SDA, HDA, and MDA) AES signals de-embedded from the selected SDI Input, IN1 or IN2 (Item E, page 10) are output from this female Ω impedance connections. See the table and diagram HD-15 connector, which is configured for unbalanced 75Ω below for pinout information.
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation Introduction to the User Interface There are two sections that may be referred to when learning how to operate the AMP-S8 Series+ user interface controls; the User Interface Features section starting on page 18, which describes the units functions by feature and the User interface Function Guide section starting on page 23, which describes the operation of the unit by function and also describes operation in greater detail.
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation Introduction to the User Interface Figure-2c: Major Operational Modes, Submodes, and Parameters Figure-2d: Front Panel User Interface Reference © 2006 Wohler Technologies Inc.
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation User Interface Features Please refer to Figure-2d on page 17 to familiarize yourself with the front panel user interface controls of the AMP-S8 Series+ units. The following sections describe these features and are referenced, by number/letter, to Figure-2d.
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation User Interface Features 7e LCD Display In Normal Operational Mode the high-contrast LCD Display is used to report the currently selected channels for reproduction along with selected source type, mix type, and any SD/HD-SDI audio group information (for products with the SDI inputs). In other modes the display will indicate phase correlation and mute status.
Section 2: Operation AMP-S8 Series+ User Manual P/N 821640 Rev-B User Interface Features 7h GROUP (SETUP) Button Selecting SDI GROUP: > GROUP Button When either of the the SDI inputs are selected for monitoring, the GROUP Button allows the user to select which two 4channel SDI audio groups are available for monitoring and presented to the left and right banks of four Level Meter Bargraphs (Item 8, page 8).
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation User Interface Features 7i INPUT (DOWNMIX) Button Selecting Input Sources or User Presets for Monitoring: > INPUT Button The INPUT Button is used to select the input source or user preset to be monitored. In Normal Operational Mode each press of the INPUT Button cycles through the following sources: Analog, AES1 (unbalanced), AES2 (balanced), SD-SDI1 (or HD-SDI1), and SD-SDI2 (or HD-SDI2).
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation User Interface Features 7k MUTE Button Pressing the MUTE Button allows the user to step through three mute states and an unmuted state. When the system is in one of the mute states, all other information normally shown in the LCD Display, such as the Input Status Display, is disabled and all other buttons are disabled until the unit is taken out of the Mute Mode.
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation User Interface Function Guide This Function Guide references the operation of the AMP-S8 Series+ monitors by function rather than by feature and describes most operations in greater detail than are found in the User Interface Features section (page 18).
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation User Interface Function Guide Default Modes Normal Operational Mode: This is the default operational state of the monitor when selection modes, operational state modes, display modes, and setup modes are not enabled. In this mode the LCD display indicates the current operational status in regard to input source and channel selection. The Normal Operational is enabled by default at unit power up.
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation User Interface Function Guide Selection Modes (Cont.) Channel Mix Selection: CHANNEL MIX Button 1-8 Press any of the eight CHANNEL MIX Buttons to activate the mixing (summing) feature. This mode is indicated by the LCD Display showing MIX in the upper right and left of the display.
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation User Interface Function Guide Selection Modes (Cont.) Presets: Presets may be recalled, created, and replaced by either using the PRESETS Buttons 1-4 or by menu selection in Setup Mode. Presets can only be erased in Setup Mode. See page 29-30 for how to recall, create, and erase presets within Setup Mode.
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation User Interface Function Guide Selection Modes (Cont.) SDI GROUP Selection: GROUP Button When either of the the SDI inputs are selected for monitoring, the GROUP Button allows the user to select which two 4-channel SDI audio groups are presented to the left and right banks of four Level Meter Bargraphs. When the buttons are pressed relatively rapidly, the order of selections follows that shown in the table (right).
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation User Interface Function Guide Setup Mode Enabling Setup Mode: FN Button + SETUP Button Setup Mode is enabled by pressing and holding the FN Button and then pressing the SETUP Button. This mode is used to change unit features. Menu selections and parameters are cycled through using the the P and D Buttons. Selections are accepted by pressing the ENT E Button.
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation User Interface Function Guide Setup Mode (Cont.) Recall Preset (RCallPSet): This is a menu command, allowing the user to recall a stored preset. Pressing the is active will present the user with the option of choosing a preset to recall: Button while this menu Choose PresetNum Preset1: Off Air Pressing the and Buttons will scroll through the presets, showing each one by name. In the above example, Preset 1 is called “Off Air”.
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation User Interface Function Guide Setup Mode (Cont.) Erase Preset (ErasePSet): This is a menu command that allows the user to erase a stored preset. Pressing the ENTER Button will allow the user to choose a preset to erase: Choose PresetNum Preset1: Off Air The L UP and L DOWN Buttons or R UP and R DOWN Buttons select from among the available presets.
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation User Interface Function Guide Setup Mode (Cont.
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation User Interface Function Guide Operational State Modes Enabling Mute States: Mute Button Pressing the MUTE Button allows the user to step through three mute states and an unmuted state. When the system is in one of the mute states, all other information normally shown in the LCD Display, such as the Input Status Display, is disabled. All other buttons are disabled until the unit is taken out of the Mute Mode.
© 2006 Wohler Technologies Inc.
(See Downmix Selection on page 25) © 2006 Wohler Technologies Inc.
© 2006 Wohler Technologies Inc.
AMP-S8 Series+ User Manual P/N 821640 Rev-B (This page left intentionally blank) 36 © 2006 Wohler Technologies Inc.
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 3 Technical Information General Technical Observations Balance Control Characteristics AMP-S8 Series+ Interconnect Block Diagram © 2006 Wohler Technologies Inc.
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 3: Technical Information General Technical Observations General Mechanical Observations Elimination of cabinet and component sympathetic vibrations (resonances) requires considerable attention to mechanical details. Because of this, and the physical constraints of the speakers' acoustic enclosures, even minor changes to any of the mechanical details of the unit can seriously impair its acoustic performance.
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 3: Technical Information Balance Control Characteristics The balance control attenuates the signal from the source, so that the left and right bass frequencies (summed together and reproduced in the woofer channel) will also respond to the balance control.
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 3: Technical Information AMP-S8 Series+ Interconnect Block Diagram 40 © 2006 Wohler Technologies Inc.
AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 3: Technical Information NOTE: PCB layout and schematic support documentation is available upon request. Wohler Technologies, Inc. Wohler Technologies, Inc. 31055 Huntwood Avenue 31055 Huntwood Avenue Hayward, CA 94544 Hayward, CA 94544 1-888-596-4537 Fax: (510) 870-0811 Phone: (510) 870-0810 Fax: (510) 870-0811 web: www.wohler.com US Toll-Free: 1-888-596-4537 e-mail: support@wohler.com www.wohler.com support@wohler.com © 2006 Wohler Technologies Inc.
AMP-S8 Series+ User Manual P/N 821640 Rev-B Wohler Technologies, Inc. Inc. Wohler Technologies, 31055 Huntwood Avenue 31055 Huntwood Avenue Hayward, CA 94544 Hayward, CA 94544 1-888-596-4537 Fax: (510) 870-0811 Phone: (510) 870-0810 Fax: (510) 870-0811 web: www.wohler.com US Toll-Free: 1-888-596-4537 e-mail: support@wohler.com www.wohler.com support@wohler.com 42 © 2006 Wohler Technologies Inc.
