Wohler AMP1-DA User Manual
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Wohler AMP1-DA User Manual

1ru audio speaker monitor
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AMP1-DA/106
1RU Audio Speaker Monitor
User Guide
Part Number 821024, Revision B

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Summary of Contents for Wohler AMP1-DA

  • Page 1 AMP1-DA/106 1RU Audio Speaker Monitor User Guide Part Number 821024, Revision B...

  • Page 2: Customer Support

    Wohler Technologies, Inc. reserves the right to change or improve our products at any time and without notice. In no event will Wohler Technologies, Inc. be liable for direct, indirect, special, incidental, or consequential damages resulting from any defect in the hardware, software, or its documentation, even if advised of the possibility of such damages.

  • Page 3: Table Of Contents

    AMP1-DA/106 User Guide Introduction Overview The AMP1-DA/106 audio monitor provides self-powered, full-fidelity stereo monitoring in the smallest rack space possible. All models contain four high performance transducers driven by three power amplifiers: two amplifier/driver combinations handle midrange and high frequency information in stereo, while the third center channel reproduces information below the 500 Hz crossover point.

  • Page 4: Safety Instructions

    A M P 1 - D A / 1 0 6 U s e r G u i d e S a f e t y I n s tr u c ti o n s Safety Instructions Read, keep, and follow all of these instructions; heed all warnings. Do not use this equipment near water or moisture.

  • Page 5: Installation Recommendations

    AMP1-DA/106 User Guide I n s ta l la t i o n R e c o m me n d a t io n s Installation Recommendations Mounting The unit is designed to install into a standard 19" rack mounted at eye level for best visual observation of the monitor screens.

  • Page 6: Fcc Compliance

    Description All AMP1-DA/106 model comes equipped with a stereo volume control, balance pot, power indication LED, and headphone output. Output limiter circuits are incorporated to protect the speakers, and extensive magnetic shielding allows placement immediately adjacent to video monitors without causing display interference.

  • Page 7: Features

    Selectable alternate Bargraph Scales (AES, Extended VU, Alternative AES, VU, BBC, NORDIC, and DIN) Applications The AMP1-DA/106 is ideally suited for use in VTR bays, mobile production vehicles, teleconferencing installations, multimedia 8 2 1 0 2 4 : A M P 1 - D A / 1 0 6 U s e r G u i d e...

  • Page 8: Specifications

    S p e c if i c a ti o n s systems, satellite links and cable TV facilities, and on-air radio studios. Designed and manufactured in the U.S., the AMP1-DA/106 is backed by a strong warranty and a satisfaction guaranteed return policy.
  • Page 9 AMP1-DA/106 User Guide S p e ci f i c a t i o n s Table 1–1 Specifications for the AMP1-DA/106 Specification Value D to A Gain Calibration, +8 = -20, +4 = -20, +6 = -9, 0 = -18...

  • Page 10: Other Options

    570 nm; red: 630 nm 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-DA/106 units include the following functions (and combinations thereof): • Separate channel volume controls •...
  • Page 11 (bass) speaker(s). Note that the woofer channel is not a dedicated LFE or center channel. Speaker Configuration The 1RU rack size AMP1-DA/106 units are configured with two speakers (left and right) to reproduce mid- and high-range audio frequencies (in stereo), but feature two woofer speakers to reproduce the summed (combined) low-range audio frequencies from the left and right speaker input channels.

  • Page 12: Front Panel Controls

    Brightness Speakers • Speakers: The AMP1-DA/106 speaker system is comprised of two mid-range tweeter speakers (left and right) and two woofer speakers (left and right). The two mid-range speakers reproduce, in stereo, only the mid and high frequencies, while the two woofer speakers monorally reproduce the low frequencies.

  • Page 13: Rear Panel Connectors

    AMP1-DA/106 User Guide R e a r P a n e l C o n n e c t o r s • Analog/Digital Source Select Switch: When this toggle switch is set to analog, the unit will monitor the analog input signals from the Analog In XLR connectors on the rear panel.
  • Page 14 A M P 1 - D A / 1 0 6 U s e r G u i d e R e a r P a n e l C o n n e ct o r s • AES/EBU Input Termination and AES Error Fault Type DIP Switches: •...
  • Page 15 AMP1-DA/106 User Guide R e a r P a n e l C o n n e c t o r s • AES/EBU In (In 1 and In 2): These two female BNC input connectors In 1 In 2 ) accept standard AES/EBU signals.

  • Page 16: Rear Panel 6-Position Dip Settings For The Level Meters

    A M P 1 - D A / 1 0 6 U s e r G u i d e R e a r P a n e l 6 -P o s it i o n DI P S e tt i n g s f o r t h e Le v e l M e t e r s Figure 1–7 XLR (Male and Female) Pin-Outs) Female...
  • Page 17 R e a r P a n e l 6 -P o s it i o n D IP S et ti n g s f o r t h e L e v e l M e t e r s Figure 1–8 AMP1-DA/106 Rear Panel DIP Switch Settigns...

  • Page 18: Rear Panel 10-Position Dip Settings For The Level Meters

    A M P 1 - D A / 1 0 6 U s e r G u i d e R e a r P a n e l 1 0 -P o s it i o n D IP S ett i n g s f o r t h e L e v e l M e t e r s Only one auto-calibration attempt may be made for each cycling of AC power to the unit.
  • Page 19 (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 A M P 1 - D A / 1 0 6 U s e r G u i d e R e a r P a n e l 1 0 -P o s it i o n D IP S ett i n g s f o r t h e L e v e l M e t e r s Figure 1–10 DIP Switch Locations 8 2 1 0 2 4 :...

  • Page 21: Phase Correlation

    PCB. The labels for this feature (Figure 1–11 on page 18) can be specified at the time of order or requested from Wohler for application to existing units. 8 2 1 0 2 4 : A M P 1 - D A / 1 0 6 U s e r G u i d e...
  • Page 22 (fourteenth segment up on the 106-segment bargraph). Alternate Scales The standard scale used on the AMP1-DA/106 unit is the Extended VU scale. However, if alternative scale characteristics are selected for the level meters by setting the Alternate Scale DIP switches, it is recommended that a label with the appropriate scale be applied to the front panel LED bargraph level meters.

  • Page 23: Technical Functional Overview

    AMP1-DA/106 User Guide T e c h n i c a l F u n c t i o n a l O v e r vi e w Figure 1–12 106-Segment Alternate Scales Technical Functional Overview Figure 1–13 below illustrates the overall functionality of the AMP1-DA/106.
  • Page 24 A M P 1 - D A / 1 0 6 U s e r G u i d e T e c h n i c a l F u n c t i o n a l O v e r v i e w 8 2 1 0 2 4 : A M P 1 - D A / 1 0 6 U s er G u i d e ©...

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