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User Guide
Audio
MPA 401 Series
Mini Power Amplifiers
68-1436-01 Rev. C
12 10
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Precautions Safety Instructions • English Warning Power sources • This equipment should be operated only from the power source indicated on the product. This This symbol is intended to alert the user of important operating and maintenance equipment is intended to be used with a main power system with a grounded (neutral) conductor. The (servicing) instructions in the literature provided with the equipment. third (grounding) pin is a safety feature, do not attempt to bypass or disable it. Th
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FCC Class B Notice This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a resi- dential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarant
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Contents Introduction ............................................1 MPA 401-70V and MPA 401-100V Description 1 MPA 401-70V and MPA 401-100V Features ..... 2 Rear Panel and Cabling ..........................3 Rear Panel Cabling ........................................... 3 Power Input ..................................................... 4 Audio Inputs .................................................... 5 Remote Input Connector.................................. 6 Speaker Connections ............
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MPA 401-70V and MPA 401-100V • Contents vi
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Introduction This guide contains information about the Extron MPA 401-70V and MPA 401-100V mini power amplifiers with instructions for experienced installers on how to install, configure, and operate the equipment. Unless otherwise specified, references in this guide to the “amplifier,” “MPA,” or “MPA 401” relate to the features or operation of either amplifier. MPA 401-70V and MPA 401-100V Description The Extron MPA 401-70V and MPA 401-100V integrated mini power amplifiers provide mono ampl
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MPA 401-70V and MPA 401-100V Features Patented CDRS (Class D Ripple Suppression) — CDRS is an Extron patented technology that eliminates high frequency switching ripple and EMI emissions found in all Class D amplifiers. CDRS dramatically improves audio performance over conventional Class D amplifier designs and enables Extron power amplifiers to be situated near wireless A/V devices without RF interference. UL 2043 plenum rated — The amplifiers meet UL 2043 for smoke and heat release for in
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Rear Panel and Cabling This section describes the rear panel features and cabling of the MPA 401-70V and MPA 401-100V. z Rear Panel Cabling z Power Input z Audio Inputs z Remote Input Connector z Speaker Connections Rear Panel Cabling The illustration below shows the rear panel of the amplifiers: CLASS 2 WIRING MPA 401-70V INPUTS ® US DO NOT GROUND OR SHORT LISTED 17TT SPEAKER OUTPUTS! (MONO) AUDIO/VIDEO APPARATUS L 10V 50mA OUTPUT POWER VOL/MUTE R 12V REMOTE L (MONO) R 70V 1.5A MAX 3
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Power Input a Power connector — The MPA 401-100V ships with an Extron 36 W desktop power supply (PS 1230 [part number 70-769-01]). The MPA 401-70V ships with either the Extron 36 W desktop power supply or the Extron 12 VDC, 5 A power supply (EPS 1250 C [part number 70-725-01]). When using the EPS 1250 C power supply, connect the two pole, 3.5 mm captive screw connector from the power supply to the power socket on the rear panel of the MPA 401-70V, as shown below in figure 3. Ensure the con
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L (MONO) R L (MONO) R L (MONO) R L (MONO) R When using the PS 1230 power supply with either amplifier, connect one end of the DC power cord to one of the two pole, 3.5 mm captive screw connectors on the power supply. Connect the other end into the power socket on the rear panel of the amplifier, as shown in figure 4 below. The power cord connectors are already correctly wired when shipped. CAUTION: When the PS 1230 power supply is connected to the MPA 401, it must not be shared with any oth
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Remote Input Connector e Remote input connector (see figure 2) — This 3-pole captive screw connector allows the option of using a wall-mounted audio controller or MediaLink product to control volume and mute levels remotely. Options for remote control include the Extron VC 50, VCM 100 AAP, VCM 100 MAAP, or MLA VC10. Third party 10k potentiometer volume controllers can also be connected to this port. See the notes on page 4 for important information about connecting wires to captive screw co
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Setup and Operation This section provides information about the front panel features and operation of the MPA 401-70V and MPA 401-100V: z Front Panel Features z Setting Input Level z Setting Bass and Treble z Remote Control Options Front Panel Features The front panels of the MPA 401-70V and MPA 401-100V are identical and shown below: 2 LEVEL BASS TREBLE 1 MPA 401 MINI POWER AMPLIFIER Figure 5. MPA 401-70V or MPA 401-100V Front Panel a Power LED — The green LED is on when the MPA 401 unit is
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Setting Input Level LEVEL BASS TREBLE Adjust the input level as follows: 1. If necessary, unplug the remote plug from the unit. MPA 401 2. If connecting the amplifier to a system with MINI POWER AMPLIFIER adjustable volume, set the volume to its lowest point. Then adjust the level potentiometer fully counterclockwise to its minimum setting. 3. Set the system volume to its maximum level. No sound should come out. 4. Slowly increase the amplifier level until sound distortion starts to occur. Low
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Remote Control Options Extron Extron SI 3CT LP a Full-Range VCM 100 AAP Ceiling Speakers Volume/Mute Controller Extron b MLC 104 IP Plus Controller Extron MPA 401 Mini Power Ampli er Extron DVS 304 DVI AD Flat Panel Digital Video Display Scaler Audio (DVI) w/ Audio Laptop VCR DVD DSS Receiver (RGB) (Video) (Component) (S-video) Figure 6. MPA 401 Remote Control Options 1. Extron VCM 100 AAP volume and mute control — For a system designed to control the volume of the amplifier directly, use a
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Specifications Audio Voltage gain MPA 401-70V RCA and TRS inputs ........... 222x (47 dB) Captive screw input ........... 57x (35 dB) MPA 401-100V RCA and TRS inputs ........... 317x (50 dB) Captive screw input ........... 81x (38 dB) CMRR ............................................ 75 dB (typical) @ 1 kHz Bass adjustment ............................. ±10 dB @ 100 Hz Treble adjustment ........................... ±10 dB @ 10 kHz Audio input Number/signal type ........................ 1 stere
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Output power MPA 401-70V .......................... 40 watts (rms), 70 V, 1 kHz, 1% THD MPA 401-100V ........................ 40 watts (rms), 100 V, 1 kHz, 1% THD Control/remote — amplifier Control port ................................... (1) 3.5 mm captive screw connector, 3 pole Pin configuration ............................ Pin 1 = +10 VDC (50 mA max.), pin 2 = volume/mute control (variable voltage), pin 3 = GND Volume control voltage range ......... 0 V (mute) to 10 V (maximum volume) G
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Parts and Accessories This section of the user guide contains information about: z Included Parts z Optional Accessories Included Parts Description Part Number MPA 401-70V 60-845-01 or MPA 401-100V 60-845-11 EPS 1250 C External 12 VDC, 5 A power supply 70-725-01 (MPA 401-70V) or PS 1230 External 36 W power supply 70-769-01 (MPA 401-70V and MPA 401-100V) IEC power cord (1) 2-pole 5 mm terminal block plug (1) 5-pole 3.5 mm captive screw plug (1) 3-pole 3.5 mm captive screw plug (1) 2-pole 3.5
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Optional Accessories Description Part Number RSU 126 1U, 6 inch deep, universal rack kit 60-190-10 RSB 126 1U, 6 inch deep basic rack shelf 60-604-11 RSU 129 1U, 9.5 inch deep, universal rack kit 60-190-01 RSB 129 1U, 9.5 inch deep basic rack shelf 60-604-02 MBU 125 Under-desk mounting kit 70-077-01 MBD 129 Through-desk mounting kit 70-077-02 PMK 350 Pole mount kit 70-563-03 EPS 1250 C External power supply replacement kit 70-725-01 PS 1230 External 36 W power supply replacement kit 70-769-01 VC
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Mounting This section outlines the various mounting options available for the MPA 401 series amplifiers: z Plenum Placement z Tabletop Placement z Rack Mounting z Under-desk Mounting z Through-desk Mounting z Projector Mounting Plenum Placement The MPA 401-70V and MPA 401-100V amplifiers meets UL 2043 requirements for heat and smoke release. They can be installed in the ceiling, out of sight, with reduced risk of theft. CAUTION: Although the amplifier is plenum rated, the power supply provide
