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1U Audio Speaker Monitor
with Two Selectable AES/EBU Digital Inputs
on BNCs, Two Analog Inputs on XLRs, Stereo
Analog Outputs on XLRs, Two 26-Segment
Level Meters, and Phase Indication
Title and Contents ...........................................................................
Important Safety Instructions and Introduction ..............................................
Section 1: General Features and Specifications .............
Description, Features, and Applications ...................................................
Specifications and Other Options ..................................................................
Installation ....................................................................................................
Section 2: Operation ......................................................................
Front Panel Features ...................................................................................
Rear Panel Features .....................................................................................
Audio Amplifier and Speaker Configuration ..................................................
Balance Control Characteristics ....................................................................
Section 3: Technical Information ..........................................
General Technical Observations ....................................................................
AES Input D/A Conveter Module PCB Circuit Description ...........................
General Level Meter PCB Descriptions ........................................................
Series II Level Meter Rear Panel DIP Settings ..............................................
Series II Level Meter Internal DIP Settings ...................................................
Series II Level Meter Internal DIP Locations ................................................
Mute on Error Header H12 Location - 919117 PCB ....................................
AMP1-DA Interconnect Block Diagram .......................................................
© 2006 Wohler Technologies Inc. ALL rights reserved
AMP1-DA
Document P/N 821530 Rev-C
User Manual
CONTENTS
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Summary of Contents for Wohler AMP1-DA
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Page 1: Table Of Contents
Series II Level Meter Rear Panel DIP Settings ..........Series II Level Meter Internal DIP Settings ........... Series II Level Meter Internal DIP Locations ..........Mute on Error Header H12 Location - 919117 PCB ........AMP1-DA Interconnect Block Diagram ............© 2006 Wohler Technologies Inc. ALL rights reserved... -
Page 2: Important Safety Instructions And Introduction
Introduction Congratulations on your selection of a Wohler Technologies product. 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 Specifications
AMP1-DA User Manual P/N 821530 Rev-C Section 1 General Features and Specifications Description Features Applications Specifications Other Options 12/01/06 © 2006 Wohler Technologies Inc. ALL rights reserved... -
Page 4: Description, Features, And Applications
The AMP1-DA model features two selectable AES input sources on unbalanced BNC connectors and a stereo analog input source on two balanced XLR connectors. A toggle switch on the front panel allows selection of AES source 1 or 2 while another toggle switch selects between the selected AES digital source and the analog source inputs. -
Page 5: Specifications And Other Options
Typical 1/6 Octave Audio Response Curve Other Options Wohler Technologies offers the broadest range of standard production audio monitor units. Standard-production models or special order custom features for the AMP1 Digital Series (1U) units include the following functions (and combinations thereof): •... -
Page 6: Installation
The unit's AC mains connection is via a standard IEC inlet, with safety ground connected directly to the unit's chassis. The universal AC input (100-240VAC, 50/60Hz) switching power supply is a self-resetting sealed type, with automatic over-voltage and over-current shutdown. There is no user-replaceable fuse in either the primary or secondary circuit. © 2006 Wohler Technologies Inc. ALL rights reserved... -
Page 7: Section 2: Operation
AMP1-DA User Manual P/N 821530 Rev-C Section 2 Operation Front Panel Features Rear Panel Features Audio Amplifier and Speaker Configuration Balance Control Characteristics © 2006 Wohler Technologies Inc. ALL rights reserved... -
Page 8: Front Panel Features
Section 2: Operation Front Panel Features Please refer to Figure-2a on the following page to familiarize yourself with the front panel features of the AMP1-DA unit. The following sections describe these functions and are referenced, by number, to Figure-2a. Speakers The AMP1-DA internal speaker system is comprised of two mid-range tweeter speakers (left and right) and two woofer speakers (left and right). - Page 9 AMP1-DA User Manual P/N 821530 Rev-C Section 2: Operation Figure-2a: Front Panel Features © 2006 Wohler Technologies Inc. ALL rights reserved...
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Page 10: Rear Panel Features
Section 2: Operation Rear Panel Features Please refer to Figure-2b on the following page to familiarize yourself with the rear panel features of the AMP1-DA unit. The following sections describe these features and are referenced, by letter, to Figure-2b. Power - IEC-320 Connector Attach a standard IEC-320 power cord between this connector and mains power (100 - 250VAC, 50/60 Hz). - Page 11 AMP1-DA User Manual P/N 821530 Rev-C Section 2: Operation Figure-2b: Rear Panel Features © 2006 Wohler Technologies Inc. ALL rights reserved...
- Page 12 Source Select switch on the front panel (Item 9, page 8) is set to ANALOG. For XLR pinout information see diagram below. Pin-2 Pin-1 Pin-1 Pin-2 High (+) High (+) (Shield) (Shield) Pin-3 Pin-3 Low (-) Low (-) Female XLR Pinout Male XLR Pinout © 2006 Wohler Technologies Inc. ALL rights reserved...
- Page 13 AMP1-DA User Manual P/N 821530 Rev-C Section 2: Operation Figure-2b: Rear Panel Features © 2006 Wohler Technologies Inc. ALL rights reserved...
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Page 14: Audio Amplifier And Speaker Configuration
(to maintain overall output level). The converse is true if the balance control is panned to the right. See the simplified diagram above for placement of the balance control in the audio amplifier circuit. © 2006 Wohler Technologies Inc. ALL rights reserved... -
Page 15: Section 3: Technical Information
AMP1-DA Interconnect Block Diagram NOTE: PCB layout and schematic support documentation is available upon request. Wohler Technologies, Inc. 31055 Huntwood Avenue Hayward, CA 94544 Phone: (510) 870-0810 Fax: (510) 870-0811 US Toll-Free: 1-888-596-4537 www.wohler.com support@wohler.com © 2006 Wohler Technologies Inc. ALL rights reserved... -
Page 16: General Technical Observations
(common) OR THE GROUNDED LEAD OF ANY TEST EQUIPMENT so as not to short out the power amps. The side speaker outputs are single-ended, so these precautions are not necessary for them. © 2006 Wohler Technologies Inc. ALL rights reserved... -
Page 17: Aes Input D/A Conveter Module Pcb Circuit Description
Brightness of the bargraph displays can be adjusted to a desired setting by adjusting the trimpot located on the front panel. All bargraph displays are simultaneously adjusted with this one trimpot. © 2006 Wohler Technologies Inc. ALL rights reserved... -
Page 18: Series Ii Level Meter Rear Panel Dip Settings
Example: Using the Analog (extended VU) scale, a meter calibrated for a +4 dBu nominal level will actually turn the zero LED segment of the level meter on at +3.5 dBu (and so all segments will turn on at 0.5 dBu before that segment’s silk- screened scale indication). © 2006 Wohler Technologies Inc. ALL rights reserved... -
Page 19: Series Ii Level Meter Internal Dip Settings
(a special option specified at time of order) or by removing power and then reapplying power to the unit (unplug/replug power cord). Contact Wohler Technologies for more information about this feature. Contact Wohler Technologies for information about custom scales. -
Page 20: Series Ii Level Meter Internal Dip Locations
Section 3: Technical Information Level Meter DIP Module Locations - 919174 PCB Rear Panel Level Meter 6-Position DIP Switch Module (see page 18) Internal Level Meter 10-Position DIP Switch Module (see page 19) © 2006 Wohler Technologies Inc. ALL rights reserved... -
Page 21: Mute On Error Header H12 Location - 919117 Pcb
Installing a jumper at H12 will enable the audio H12 will mute the audio to mute when errors in if errors are detected. the AES signal are See page 14 for more detected. information. © 2006 Wohler Technologies Inc. ALL rights reserved... -
Page 22: Amp1-Da Interconnect Block Diagram
AMP1-DA User Manual P/N 821530 Rev-C © 2006 Wohler Technologies Inc. ALL rights reserved... - Page 23 AMP1-DA User Manual P/N 821530 Rev-C Section 3: Technical Information © 2006 Wohler Technologies Inc. ALL rights reserved...
- Page 24 AMP1-DA User Manual P/N 821530 Rev-C Wohler Technologies, Inc. 31055 Huntwood Avenue Hayward, CA 94544 Phone: (510) 870-0810 Fax: (510) 870-0811 US Toll-Free: 1-888-596-4537 www.wohler.com support@wohler.com © 2006 Wohler Technologies Inc. ALL rights reserved...
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