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AMP2-AM Series
(AMP2-AMVU and AMP2-AMPPM)
2U Analog Monitor Speaker Unit with
Two VU or PPM Mechanical Level Meters,
Two Balanced and Two Unbalanced Inputs,
Two Loop-Thru Outputs, and Phase Indication
Title and Contents .....................................................
Introduction .................................................................................
Section 1: General Features and Specs ................
General Description and Features ...............................................
Applications and General Specifications .....................................
Section 2: Operation ................................................
Installation .................................................................................
Front Panel Features ...................................................................
Rear Panel Features ....................................................................
Section 3: Technical Information ...........................
General Technical Observations ..................................................
AMP2-VM Series Interconnect Block Diagram ...........................
Document P/N 821540 Rev. A
User Manual
CONTENTS
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Summary of Contents for Wohler AMP2-AMVU
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Page 1: Table Of Contents
AMP2-AM Series (AMP2-AMVU and AMP2-AMPPM) 2U Analog Monitor Speaker Unit with Two VU or PPM Mechanical Level Meters, Two Balanced and Two Unbalanced Inputs, Two Loop-Thru Outputs, and Phase Indication Document P/N 821540 Rev. A User Manual CONTENTS Title and Contents ............. -
Page 2: 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 Specs
AMP2-AM Series User Manual P/N 821540 Rev-A Section 1 General Features and Specifications Description Features Applications Specifications © 2002 Wohler Technologies Inc. ALL rights reserved... - Page 4 The AMP2-AMVU model utilizes mechanical meters exhibiting VU ballistic characteristics while the AMP2-AMPPM model utilizes mechanical meters exhibiting PPM ballistic characteristics with a choice of EBU or BBC scales..
- Page 5 Units are designed to meet, at time of manufacture, all currently applicable product safety and EMC requirements, such as those of UL and CE. 0 dbV ref. 0.775V RMS. Features and specifications subject to improvement without notice. © 2002 Wohler Technologies Inc. ALL rights reserved...
- Page 6 AMP2-AM Series User Manual P/N 821540 Rev-A © 2002 Wohler Technologies Inc. ALL rights reserved...
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Page 7: Section 2: Operation
AMP2-AM Series User Manual P/N 821540 Rev-A Section 2 Operation Installation Front Panel Features Rear Panel Features © 2002 Wohler Technologies Inc. ALL rights reserved... - Page 8 AMP2-AM Series User Manual P/N 821540 Rev-A Section 2: Operation © 2002 Wohler Technologies Inc. ALL rights reserved...
- Page 9 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. © 2002 Wohler Technologies Inc. ALL rights reserved...
- Page 10 This pans the volume balance between the left and right speakers. If the balance is adjusted hard left or hard right, a slight left/ right channel mix is retained (only in low bass frequencies) so that phase discrepancies can be discerned. (Continued) © 2002 Wohler Technologies Inc. ALL rights reserved...
- Page 11 AMP2-AM Series User Manual P/N 821540 Rev-A Section 2: Operation Figure-2a: Front Panel Features © 2002 Wohler Technologies Inc. ALL rights reserved...
- Page 12 Pinout information is shown below. Center (Hot) Pin-2 Pin-1 Pin-1 Pin-2 High (+) High (+) (Shield) (Shield) Sleeve (Shield) Pin-3 Pin-3 Low (-) Low (-) Female RCA Phono Pinout Female XLR Pinout Male XLR Pinout (Continued) © 2002 Wohler Technologies Inc. ALL rights reserved...
- Page 13 AMP2-AM Series User Manual P/N 821540 Rev-A Section 2: Operation Figure-2b: Rear Panel Features © 2002 Wohler Technologies Inc. ALL rights reserved...
- Page 14 AMP2-AM Series User Manual P/N 821540 Rev-A Section 2: Operation © 2002 Wohler Technologies Inc. ALL rights reserved...
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Page 15: Section 3: Technical Information
AMP2-AM Series User Manual P/N 821540 Rev-A Section 3 Technical Information • General Technical Observations • PPM Meter Specifications and Level Threshold Settings • VU Meter Specifications and Level Threshold Adjustment © 2002 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. © 2002 Wohler Technologies Inc. ALL rights reserved... -
Page 17: Ppm Meter Specifications And Level Threshold Settings
MVU Level Gain Calibration: Level Gain Calibration adjustment for the AMP2-AMVU is done by adjusting two trim pots (P1 and P2) on the level meter driver PCB (919036V). The units top cover must be removed to access this PCB, which is mounted in the center of the chassis bottom. - Page 18 AMP2-AM Series User Manual P/N 821540 Rev-A Section 3: Technical Information © 2002 Wohler Technologies Inc. ALL rights reserved...
- Page 19 AMP2-AM Series User Manual P/N 821540 Rev-A 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 © 2002 Wohler Technologies Inc. ALL rights reserved...
- Page 20 713 Grandview Drive 31055 Huntwood Avenue South San Francisco, CA 94080 Hayward, CA 94544 650 589-5676 Fax: 650 589-1355 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 © 2002 Wohler Technologies Inc. ALL rights reserved...