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AMP V Series User Guide Introduction Overview The AMP V Series monitors are audio monitors capable of audibly monitoring up to four analog source channels through an internal stereo speaker system while simultaneously visually monitoring all four channels of the selected source via four high-resolution LED bar graph level meters.
A M P V S e r ie s 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 IMPORTANT: 1. Read, keep, and follow all of these instructions; heed all warnings. 2. Do not use this equipment near water. 3. Use only a dry cloth to clean the equipment. 4. Do not block any ventilation openings. Install only in accordance with the instructions in the section entitled, “Installation Recommendations” on page 3. 5.
AMP V Series 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 Unpacking Unpack the AMP V Series monitor from the shipping container and inspect all components for shipping damage. If you find any damage, notify the shipping carrier for claims adjustments. Compare the shipping box contents to the packing slip. Contact Wohler’s customer support personnel about any discrepancies. (Wohler’s contact information in on the copyright page ii, of this manual).
A M P V S e r ie s U s e r G u i d e D e s c r ip t i o n Power Each unit comes with a standard 24VDC/3.0A internal power supply and connects an A/C mains power source (65W, 100 to 240 VAC, 50/ 60Hz) to the IEC connector provided on the rear panel of the unit. Electrostatic Discharge (ESD) As with most electronic equipment, static discharges can damage components within the unit. Take precautions to ensure your installation environment is not subject to ESD.
AMP V Series User Guide Features Features • 98 dB SPL at two feet • Excellent high frequency response for positive detection of background whine and noise • Audible and visual indication of phase/polarity problems • Thorough magnetic shielding for placement next to video monitors • Four high-resolution tri-color bargraph level meters: • Selectable input reference level (0, +4, +6, or +8 dBu) • Selectable display mode (VU Only, VU/PPM, or PPM Only) • Selectable peak hold (Manual, 3-Second, 10-Second, o
A M P V S e r ie s U s e r G u i d e S p e c if i c a ti o n s Specifications Table 1–1 lists the specifications for the AMP V Series monitors. Table 1–1 AMP V Series Monitors Specifications Specifications Level Meter Type Segment Size Peak Hold (selectable) Dynamic Range Scale Bar Graph Scales Midscale Resolution Input Connectors Analog Input Impedance Digital Input Impedance Input Level for Maximum Output (Volume Full On) Peak Acoustic Ouptut (@ 2 ft.
AMP V Series User Guide Audio Amplifier and Speaker Configuration Audio Amplifier and Speaker Configuration Audio Amplifiers All AMP V Series models contain high performance speakers 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 amplifier channel sums the left and right channel information below the 500 Hz crossover point in the woofer (bass) speaker(s).
A M P V S e r ie s U s e r G u i d e Front Panel Controls Front Panel Controls Common Controls • Speakers: The AMP1 V Series monitors feature two mid-range speakers (left and right) and two woofer speakers (one woofer in the AMP2 models). 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 woofer (bass) speaker.
AMP V Series User Guide Front Panel Controls before releasing it. This will preserve the current selection set as though the button was never pushed. • Level Meters: Audio levels for the four selected source channels are displayed via these four tri-color LED bargraph meters. The four bar graph meters display levels for the digital or analog sources as selected by the Analog/Digital source select switch.
A M P V S e r ie s U s e r G u i d e Front Panel Controls • Balance (Rotary Knob): This adjusts the volume balance between the left and right speakers or headphones with the left and right bass frequencies (summed together and reproduced in the woofer channel) also responding to the balanced control.
AMP V Series User Guide Front Panel Controls AMP1-V2DA-Specific Controls Figure 1–3 Power Volume Headphones AMP1-V2DA Front Panel Speaker Assign Brightness Phase Level Meters AES 1 & 2 Balance Analog/Digital Speakers • Analog/Digital Select (Toggle Switch): This two position switch selects between two primary input sources, analog or digital. When this toggle switch is set to analog, the unit will monitor the signals as input on the rear panel Analog In phoenix connectors.
A M P V S e r ie s U s e r G u i d e Front Panel Controls AMP2-VSDA-Specific Controls Figure 1–4 AMP2-VSDA Front Panel Analog/Digital Brightness Power Volume Phase Headphones Speaker Assign Level Meters AES 1 & 2 Balance SDI AES/SDI Speakers • Analog/Digital Select (Toggle Switch): This two position switch selects between two primary input sources, analog or digital. When this toggle switch is set to analog, the unit will monitor the signals as input on the rear panel Analog In phoenix connectors.
AMP V Series User Guide Rear Panel Connectors signal present the LED will be unlit. This LED functions whether or not the SDI digital signal is selected for monitoring through the unit. Rear Panel Connectors Common Connectors Descriptions • Power: Attach a standard IEC-320 power cord between this connector and mains power (100 - 250VAC, 50/60 Hz). The front panel Power LED will glow green to indicate operating voltages are present.
A M P V S e r ie s 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 AMP1-VTR2-Specific Connectors Figure 1–6 AMP1-VTR2 Rear Panel CHANNEL 3 + SERIAL NO. + - + - + - + - + - Technologies + - Tel +1-510-870-0810 Fax +1-510-870-0811 AMP1A-VTR2 253836 INPUTS Power DISPLAY MODE OPERATE +8 VU/VU CALIBRATE +6 VU/PPM +4 PPM www.Wohler.com MONTH YEAR MADE IN U.S.A. + - METER CALIB Wohler CHANNEL 4 0 123456 23 PPM/PPM 1 2 1 3 2 CH B(R) CHANNEL 2 SEL.
AMP V Series User Guide Rear Panel Connectors • AES Termination (Four-Position DIP Switch): This DIP switch sets the termination for the AES inputs. If an AES input channel is fed to downstream equipment, the associated DIP switch must be in the up position (unterminated). If no downstream equipment is connected, the switch must be in the down position (terminated). See Figure 1–8 for details.
A M P V S e r ie s 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 • Converted Analog Out (Converted from AES Inputs) (Phoenix, 3Pin Male, Outputs 1 through 4): These connectors output standard, balanced analog signals converted from the AES digital inputs (but not the analog inputs) and are not affected by the position of the Analog/Digital source select swich.
AMP V Series User Guide L i n e L e v e l C a li b r at i o n In s t r u c t io n s • AES Out from SDI (1 and 2, on BNC): These two unbalanced (75 ) loop-through connectors each output a copy of the de-embedded audio from the SDI input. • AES Termination (Four-Position DIP Switch): This DIP switch sets the termination for the AES inputs. If an AES input channel is fed to downstream equipment, the associated DIP switch must be in the up position (unterminated).
A M P V S e r ie s U s e r G u i d e L in e L e v e l C a l ib ra t i o n I n s tr u c ti o n s Note: Position 6 of the DIP Switch is not used. Note: For more accurate indication of signal levels, meters are tuned to effect a “rounding” function, which occurs between the thresholds of any two bar graph segments. This means the level meter zero (0) LED sigment will turn on at one-half the smallest spacing between LED segments (mid-scale resolution) before that segment’s scale indication.
AMP V Series User Guide L i n e L e v e l C a li b r at i o n In s t r u c t io n s 6. Place DIP section 1 in the up position and return unit to service. 7. Only one auto-calibration attempt may be made for each cycling of AC power to the unit. Once the Line Level Calibration DIP switch has been placed in the CAL position, it is necessary to cycle the power before that DIP switch will be functional again, even if a calibration attempt was unsuccessful.
A M P V S e r ie s U s e r G u i d e In te r n a l Sw i tc h S e t ti n g s Internal Switch Settings After removing the top cover, you can access DIP switches that control level meter settings and/or calibration settings. This 10-position DIP module is located on the 919174 PCB (See Figure 1–13 on page 21 for the location.) Refer to Figure 1–12 below for a complete list of settings and functions. (Switch positions 1 and 10 are not used and should be left at the factory set position.
AMP V Series User Guide I n te rn al S wi t ch S e t t in g s Figure 1–13 Internal DIP Switch Location (PCB 919174) © 2 01 0 Wo h le r Te ch n o l og ie s, I n c . A l l r i g h t s r e s e r v e d .
A M P V S e r ie s U s e r G u i d e In te r n a l Sw i tc h S e t ti n g s 22 Figure 1–14 AMP2-VSDA Alternative Scales Figure 1–15 AMP1-VSDA and AMP1-VTR2 Alternative Scales © 2 01 0 Wo h le r Te ch n ol og ie s , I n c . A l l r i g h t s r e s e rve d .
AMP V Series User Guide I n te rn al S wi t ch S e t t in g s Peak Hold The Peak Hold - Manual setting allows the bar graph display meters to indefinitely maintain the peak hold value until you reset it, either by pressing a reset button (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.
A M P V S e r ie s U s e r G u i d e Technical Functional Overview at the time of order or requested from Wohler for application to existing units. Figure 1–16 Phase Correlation Labels Positive amounts of correlation are indicated by an ascending amber bar in the right channel bar graph; negative correlation is shown when a red bar ascends in the left channel bar graph.
AMP V Series User Guide T e c h n i c al F u n c ti o n al O v e r v ie w Figure 1–17 AMP1- V2DA Block Diagram 1 Analog Inputs (1-4) 1 2 3 Analog/ Digital Select 4 2 3 4 26-Segment High-Resolution Level Meters AES Input 2 D/A 3/4 Left A D Left Stereo Analog Amplifier Right Right A D D/A Left Speaker (1-4 to Left & Right) A D AES Input 1 Volume Balance Assign/Sum Channel Select A D 1/2 Headphone 1 2 3 4 1 2 3 4 L R L R Analog Output of Selected Source Phase Indication Wo
AMP V Series User Guide Technical Functional Overview Figure 1–18 AMP2-VSDA Block Diagram 1 1 2 3 53-Segment High-Resolution Level Meters 2 Analog Inputs (1-4) AES 1 Input AES 2 Input AES 1 Input 3 Analog/ Select Digital Select 4 1/2 1/2 AES SDI/AES Select SDI AES 1 Output (From SDI IN) AES 2 Output 3/4 AES AES 1/2 Digital To Analog Converter 26 Right Right 1 2 3 4 1 2 3 4 SDI 3/4 L SDI Output SDI Input Left Stereo Analog Amplifier Woofer Speaker A D SDI SDI to AES Conve
AMP V Series User Guide T e c h n i c al F u n c ti o n al O v e r v ie w Figure 1–19 AMP2-VTR2 Block Diagram 26-Segment High-Resolution Level Meters Group 1 1 Group 2 G1 Group 1 2 Analog Inputs 3 Group 2 Group 1 Group 2 Group 1 4 Group 2 G2 G1 G2 G1 G2 G1 G2 Group Select 1 2 1 2 1 2 1 2 1 2 3 4 1 2 3 4 1 2 3 4 L Headphone R 1 Assign/Sum Channel Select 2 (1-4 to Left & Right) Balance Left Left 3 Right 4 Stereo Analog Amplifier Right Output of Selected Source Phase Indication
A M P V S e r ie s U s e r G u i d e Technical Functional Overview 28 © 2 01 0 Wo h le r Te ch n ol og ie s , I n c . A l l r i g h t s r e s e rve d .
