Wohler AMP-S8 Series+ User Manual
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Wohler AMP-S8 Series+ User Manual

(da, sda, hda, and mda models) multi-format analog/digital audio monitor
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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
Title and Contents ..............................................................
Important Safety Instructions and Introduction ...................................
Quick Start Guide .............................................................................
Description and Features ...................................................................
Applications and Specifications ..........................................................
Installation .........................................................................................
Section 2: Operation ...........................................................
Front Panel Features .........................................................................
Rear Panel Features ..........................................................................
Introduction to the User Interface ......................................................
User Interface Features .....................................................................
Presets Definitions .............................................................................
User Interface Function Guide ...........................................................
DM1, DM2, and DM3 Downmix Block Diagrams .............................
Section 3: Technical Information ................................
General Technical information ............................................................
..
Balance Control Characteristics .........................................................
AMP-S8 Series+ Interconnect Block Diagram ..................................
© 2006 Wohler Technologies Inc. ALL rights reserved

User Manual

CONTENTS
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10
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22
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33
37
38
39
40
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Summary of Contents for Wohler AMP-S8 Series+

  • Page 1: Table Of Contents

    User Interface Function Guide ............DM1, DM2, and DM3 Downmix Block Diagrams ......Section 3: Technical Information ........ General Technical information ............Balance Control Characteristics ............AMP-S8 Series+ Interconnect Block Diagram ........© 2006 Wohler Technologies Inc. ALL rights reserved...
  • Page 2 Introduction Congratulations on your selection of a Wohler Technologies AMP-S8 Series+ audio monitor unit. We are confident it represents the best performance and value available, and we guarantee your satisfaction with it. If you have questions or comments you may contact us at: Wohler Technologies, Inc.

  • Page 3: Section 1: General Features And Specs

    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. See page 25 for more information about selecting channels and downmixes for monitoring.
  • Page 4 (as currently selected), type of signal, channel selection, mute status, and alternately, phase/correlation. Input presets may be configured and easily recalled by the user. Additionally, the unique design of the AMP-S8 Series+ provides optimally focused sound in an Ultra Near Field (1 to 3 feet) environment, which allows higher SPL for the operator while reducing overall ambient sound and adjacent bay crosstalk.
  • Page 5 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., the AMP-S8 Series+ is backed by a strong warranty and a satisfaction guaranteed return policy.

  • Page 6: Installation

    Connection of the audio feeds is straightforward. Please refer to the system interconnect block diagram on page 40 for clarification of the general signal paths into and out of the AMP-S8 Series+ units. There are recommended limits to the length of cable that should be used for feeding HD-SDI signals sources to the HD-SDI inputs of the AMP-S8HDA and AMP-S8MDA units.

  • Page 7: Section 2: Operation

    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: •...
  • Page 8 (1U) models feature two mid-range speakers (left and right) and two woofer speakers. All models of the AMP-S8 Series+ contain high performance transducers driven by three power amplifiers; two amplifier/ driver combinations handle midrange and high frequency information in the left and right (stereo) speaker channels, while the third channel reproduces and sums the left and right channel information below the 500 Hz crossover point in the single woofer (bass) speaker channel.
  • Page 9 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. ALL rights reserved...
  • Page 10 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.
  • Page 11 AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation AMP2-S8SDA, AMP2-S8DA HDA, or MDA Figure-2b: Rear Panel Features © 2006 Wohler Technologies Inc. ALL rights reserved...
  • Page 12 AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation Rear Panel Features 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).
  • Page 13 AMP-S8 Series+ User Manual P/N 821640 Rev-B AMP1-S8SDA, AMP1-S8DA HDA, or MDA Figure-2c: Rear Panel Features © 2006 Wohler Technologies Inc. ALL rights reserved...
  • Page 14 AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation Rear Panel Features Analog Input Connector This female DB-25 connector accepts standard balanced, line level analog signals. See diagram below for pin-out information. 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.
  • Page 15 1) Remove power from the unit. Remove the top cover from the chassis of the AMP-S8 Series+ unit (set the screws aside for later reassembly). 3) The standard unbalanced HD-15 connector is attached to the rear panel by a plate. Under this connector and plate is the cutout for the optional DB-25 connector.
  • Page 16 Most of the User Interface control buttons are multi-functional; when pressed while the unit is in one mode they cause a certain effect, but when pressed while the unit is in a different mode they cause a different effect. On the AMP-S8 Series+ front panel itself, color-coding is used to help identify the different functions of each button when used in different modes;...
  • Page 17 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. ALL rights reserved...
  • Page 18 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. For multi-function controls, a color-coded dot identifies the mode in which a particular function operates;...
  • Page 19 AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation User Interface Features 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).
  • Page 20 AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation User Interface Features 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 4- channel SDI audio groups are available for monitoring and presented to the left and right banks of four Level Meter Bargraphs (Item 8, page 8).
  • Page 21 AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation User Interface Features INPUT (DOWNMIX) Button > INPUT Button Selecting Input Sources or User Presets for Monitoring: The INPUT Button is used to select the input source or user preset to be monitored.

  • Page 22: Presets Definitions

    AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation User Interface Features 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.
  • Page 23 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). Before using this section, it is recommended that the Introduction to the User Interface section starting on page 16 be referred to for an understanding of the AMP- S8 Series+ overall capabilities and an insight into how the user interface is structured and manipulated.

  • Page 24: Default Modes

    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.

  • Page 25: Channel Mix Selection

    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.

  • Page 26: Recalling A Preset

    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.

  • Page 27: Sdi Group Selection

    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.

  • Page 28: User Interface Function Guide

    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 Buttons.

  • Page 29: Recall Preset

    AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation User Interface Function Guide Setup Mode (Cont.) Recall Preset (RCallPSet): Button while this menu 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:...

  • Page 30: Erase Preset

    AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation User Interface Function Guide Setup Mode (Cont.) Erase Preset (ErasePSet): ENTER Button will allow the user This is a menu command that allows the user to erase a stored preset. Pressing the...

  • Page 31: Setup Mode Menu Navigation Flow Chart

    AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation User Interface Function Guide Setup Mode (Cont.) Discrete The ENTER Key will exit the current menu while ESC/ making the change to the current selection ENTER Up/Down Up/Down AOut Pref...

  • Page 32: Operational State Modes

    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.
  • Page 33 AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation (See Downmix Selection on page 25) © 2006 Wohler Technologies Inc. ALL rights reserved...
  • Page 34 AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation (See Downmix Selection on page 25) © 2006 Wohler Technologies Inc. ALL rights reserved...
  • Page 35 AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation (See Downmix Selection on page 25) © 2006 Wohler Technologies Inc. ALL rights reserved...
  • Page 36 AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 2: Operation (This page left intentionally blank) © 2006 Wohler Technologies Inc. ALL rights reserved...

  • Page 37: Section 3: Technical Information

    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. ALL rights reserved...
  • Page 38 If any of the drivers (speakers) are replaced, it may be helpful to change certain components to achieve maximum flatness of response. Contact Wohler Technologies for support in such matters. The operating threshold of the woofer limiter is critical to both satisfactory reproduction of program transients and preventing damage to, or destruction of, the speaker itself.
  • Page 39 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.
  • Page 40 AMP-S8 Series+ User Manual P/N 821640 Rev-B Section 3: Technical Information © 2006 Wohler Technologies Inc. ALL rights reserved...
  • Page 41 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...
  • Page 42 AMP-S8 Series+ User Manual P/N 821640 Rev-B 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...

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