Crestron MP-AMP40-70V, MP-AMP40-100V Operations & Installation Manual

Crestron MP-AMP40-70/100V
Media Presentation Audio Amplifier
Operations & Installation Guide

This document was prepared and written by the Technical Documentation department at:

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

AVIS: RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR

Regulatory Compliance

This product is Listed to applicable UL Standards and requirements by Underwriters Laboratories Inc.

This product conforms to UL STD 962A; certified to CSA STD C22.2 No. 21.

As of the date of manufacture, the MP-AMP40-70V and MP-AMP40-100V have been tested and found to
comply with specifications for CE marking and standards per EMC and Radiocommunications Compliance
Labelling.

Federal Communications Commission (FCC) Compliance Statement

CAUTION: Changes or modifications not expressly approved by the manufacturer responsible for

compliance could void the user’s authority to operate the equipment.

NOTE: 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 residential 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 guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:

 Reorient or relocate the receiving antenna

 Increase the separation between the equipment and receiver

 Connect the equipment into an outlet on a circuit different from that to which the receiver is connected

 Consult the dealer or an experienced radio/TV technician for help

Industry Canada (IC) Compliance Statement

CAN ICES-3(B)/NMB-3(B)

The specific patents that cover Crestron products are listed at patents.crestron.com

Crestron and the Crestron logo are either trademarks or registered trademarks of Crestron Electronics, Inc. in the United States and/or other

countries. ENERGY STAR is either a trademark or registered trademark of the United States Environmental Protection Agency in the United

States and/or other countries. UL and the UL logo are either trademarks or registered trademarks of Underwriters Laboratories, Inc. in the

United States and/or other countries. Other trademarks, registered trademarks, and trade names may be used in this document to refer to either

the entities claiming the marks and names or their products. Crestron disclaims any proprietary interest in the marks and names of others.

©2012 Crestron Electronics, Inc.

Crestron MP-AMP40-70/100V Media Presentation Audio Amplifier

Contents

Media Presentation Audio Amplifier: MP-AMP40-70/100V 1

Introduction ...............................................................................................................................1

Features and Functions................................................................................................ 1

Applications.................................................................................................................2

Specifications ..............................................................................................................3

Physical Description.................................................................................................... 4

Setup .......................................................................................................................................... 7

Installation................................................................................................................... 7

Hardware Hookup .......................................................................................................7

Problem Solving ........................................................................................................................8

Troubleshooting........................................................................................................... 8

Further Inquiries.......................................................................................................... 8

Future Updates ............................................................................................................8

Return and Warranty Policies....................................................................................................9

Merchandise Returns / Repair Service ........................................................................9

Crestron Limited Warranty..........................................................................................9

Operations & Installation Guide – DOC. 7354A Contents  i

Crestron MP-AMP40-70/100V Media Presentation Audio Amplifier

Media Presentation Audio
Amplifier: MP-AMP40-70/100V

Introduction

The Crestron® MP-AMP40 series offers a choice of 70 V or 100 V audio amplifiers,
each designed to provide a convenient, low-cost amplifier solution for a variety of
applications. These amplifiers are ENERGY STAR
organizations to fulfill their green initiatives without compromising on audio
performance.
installation virtually anywhere without requiring an equipment rack. Each model
meets the requirements of UL 2043 for installation in an environmental air-handling
(plenum) space, such as above a suspended ceiling.

1

Each model is equipped for shelf or surface-mounting to enable

®

qualified to enable

2

Features and Functions

 Compact single-channel power amplifier
 ENERGY STAR qualified
 40 watts at 70 or 100 volts (mono)
 Transformer isolated output
 High-efficiency Class D topology
 Energy saving design reduces power consumption when idle
 Convection cooled for noiseless operation
 Simple volume, bass, and treble adjustments
 Electronic short-circuit and overload protection
 Detachable terminal block speaker connection
 Balanced line input via detachable terminal block
 Unbalanced RCA line input, 3-foot (~0.9 meter) cable included
 Built-in stereo to mono summing
 Includes surface mounting brackets
 UL

ceiling

1. The MP-AMP40-70V and MP-AMP40-100V are ENERGY STAR qualified only when using the

2. The MP-AMP40-70V and MP-AMP40-100V are tested by an NRTL (Nationally Recognized Testing

2043 compliant for installation within a plenum-rated suspended

2

included power pack. Power pack meets ENERGY STAR Version 2.0 Efficiency Level V standards
in compliance with EISA Section 301 (US), CECP Tier 2 (China), MEPS Tier 2 (Australia), and CoC
(EU).

Laboratory)
Full compliance requires plenum rated cables such as Crestron CBL-KAUDIO-RCAM2-L-P-50 audio
cable, CBL-SPK-P-35 speaker cable, and CBL-PWR-EXT24V-P-6 DC power extension cable. Please
note that the included power pack is not ANSI/UL2043 compliant, and thus cannot be installed in an
air-handling space unless enclosed in a suitable plenum-rated enclosure.

and comply to ANSI/UL2043 (Fire Test For Products Installed in Air-Handling Spaces).

1

Operations & Installation Guide – DOC. 7354A Media Presentation Audio Amplifier: MP-AMP40-70/100V  1

Media Presentation Audio Amplifier Crestron MP-AMP40-70/100V

Two models are offered. The MP-AMP40-70V has a 70 volt output, and the
MP-AMP40-100V has a 100 volt output. High-efficiency Class D circuitry delivers
40 watts to drive a distributed speaker system in a meeting room, classroom, or any
other space. The output is transformer isolated to handle long and complex wire runs.

Refined, reliable operation is ensured thanks to pop-free turn-on circuitry and
electronic short-circuit and overload protection. An energy-saving design achieves
optimum efficiency under load, and the amplifier powers down automatically when
no input signal is detected for more than 5 minutes, reducing overall power
consumption and heat as part of a green system design. The amplifier quickly powers
back on the instant an input signal is detected. Its extruded aluminum housing is both
attractive and effective at dissipating heat, affording a silent running design without
cooling fans.

Installation and setup is simple. A detachable output connector facilitates the
termination of speaker wiring up to 12 gauge. Balanced and unbalanced inputs
accommodate either a mono or stereo line-level source*, allowing for direct
connection to the output of a video projector or display, audio processor, mixer, or
AV switcher. Rotary controls provide for adjusting the overall output volume, as
well as bass and treble.

Applications

The following diagram shows an MP-AMP40-70/100V in a typical application.

* Stereo input is internally summed to mono.

2  Media Presentation Audio Amplifier: MP-AMP40-70/100V Operations & Installation Guide – DOC. 7354A

Crestron MP-AMP40-70/100V Media Presentation Audio Amplifier

Specifications

Specifications for the Media Presentation Audio Amplifier are listed in the following
table.

Media Presentation Audio Amplifier Specifications

SPECIFICATION DETAILS

Audio

Input Volume Range -60 dB to +15 dB

Bass Gain Range: ±10 dB @ 100 Hz

Treble Gain Range: ±12 dB @ 10 kHz

Frequency Response 80 Hz to 20 kHz ±2.5 dB

S/N Ratio 75 dB @ 80 Hz to 20 kHz A-weighted

THD+N 0.5% @ 1 kHz

Output Power

(MP-AMP40-70V)

Output Power
(MP-AMP40-100V)

Amplifier Protection

Input Detection Threshold <30 mVrms @ 1 kHz

Power Requirements

Power Pack

Power Consumption

Environmental

Temperature 41° to 122° F (5° to 50° C)

Humidity 10% to 90% RH (non-condensing)

Heat Dissipation 26 Btu/h @ 1/8 output power

Enclosure

Chassis

Faceplate Plastic with polycarbonate label overlay

Mounting

Dimensions

Height

Width

Depth 5.87 in (149 mm)

Weight 3.4 lb (1.6 kg)

40 watts at 70 volts (Transformer isolated)

40 watts at 100 volts (Transformer isolated)

Electronic short-circuit and overload
protection

2.0 amps @ 24 volts dc
100-240 volts ac, 50/60 Hz power pack,
included1

14 watts @ 1/8 output power

6.2 watts @ Idle
750 mW standby

Aluminum with polycarbonate label overlay,
vented rear, meets the requirements of UL
2043 for installation in an environmental
air-handling (plenum) space2

Freestanding or surface mount (adhesive
feet and mounting brackets included)

2.38 in (61 mm) with feet, 2.45 in (62 mm)
with bracket

8.12 in (207 mm), 9.40 (239 mm) with
bracket

(Continued on following page)

Operations & Installation Guide – DOC. 7354A Media Presentation Audio Amplifier: MP-AMP40-70/100V  3

Media Presentation Audio Amplifier Crestron MP-AMP40-70/100V

Media Presentation Audio Amplifier Specifications (Continued)

SPECIFICATION DETAILS

Available Accessories

CBL-RCA2

CBL-KAUDIO-RCAM2-L-P-50

CBL-PWR-EXT24V-P-6

MP-WP Series Media Presentation Wall Plates

MPI-WP Series

1 The MP-AMP40-70V and MP-AMP40-100V are ENERGY STAR qualified only when using the

included power pack. Power pack meets ENERGY STAR Version 2.0 Efficiency Level V standards
in compliance with EISA Section 301 (US), CECP Tier 2 (China), MEPS Tier 2 (Australia), and CoC
(EU).

2 The MP-AMP40-70V and MP-AMP40-100V are tested by an NRTL (Nationally Recognized Testing

Laboratory) and comply to ANSI/UL2043 (Fire Test For Products Installed in Air-Handling Spaces).
Full compliance requires plenum rated cables such as Crestron CBL-KAUDIO-RCAM2-L-P-50 audio
cable, CBL-SPK-P-35 speaker cable, and CBL-PWR-EXT24V-P-6 DC power extension cable. Please
note that the included power pack is not ANSI/UL2043 compliant, and thus cannot be installed in an
air-handling space unless enclosed in a suitable plenum-rated enclosure.

Crestron Certified RCA Stereo Audio
Interface Cable

RCA to Flying Lead Stereo Audio Cable,
Plenum, 50 ft (~15 m)

DC Power Extension Cable, Plenum,
6 ft (~2 m)

Media Presentation Wall Plates –
International Version

Physical Description

This section provides information on the connections, controls and indicators
available on the MP-AMP40-70/100V.

MP-AMP40-70 Front View

MP-AMP40-70 Rear View

4  Media Presentation Audio Amplifier: MP-AMP40-70/100V Operations & Installation Guide – DOC. 7354A

Crestron MP-AMP40-70/100V Media Presentation Audio Amplifier

MP-AMP40-70/100 Overall Dimensions (MP-AMP40-70 Shown)

Connectors, Controls & Indicators

#

CONNECTORS

1

,

DESCRIPTION

CONTROLS &

INDICATORS

1 AUDIO IN

L R

MONO

(Continued on following page)

Operations & Installation Guide – DOC. 7354A Media Presentation Audio Amplifier: MP-AMP40-70/100V  5

AUDIO IN, L/MONO & R (unbalanced);
(2) RCA female;
Unbalanced stereo or mono line-level audio

2

input

;
Maximum Input Level: 2 Vrms
Stereo;
Input Impedance: 15 kΩ;
3 ft (0.9 m) stereo RCA-RCA cable included

MONO, 1 Vrms

Media Presentation Audio Amplifier Crestron MP-AMP40-70/100V

Connectors, Controls & Indicators (Continued)

#

CONNECTORS

CONTROLS &

INDICATORS

1

,

DESCRIPTION

2 AUDIO IN

L + – G + – R

MONO

3

4

AUDIO OUT

70V

AUDIO OUT

100V

AUDIO IN, L/MONO & R (balanced);
(1) 5-pin 3.5 mm detachable terminal strip;
Balanced/unbalanced stereo or mono line-level
audio input
Maximum Input Level: 2 Vrms mono, or 1 Vrms
stereo;
Input Impedance: 15 kΩ

(MP-AMP40-70 only) (1) 2-pin 5 mm
detachable terminal block;
70 V speaker-level audio output;
Wire Size: Connector accepts 12 AWG
maximum;
Output Power: 40 watts @ 70 V

(MP-AMP40-100 only) (1) 2-pin 5 mm
detachable terminal block;
100 V speaker-level audio output

Wire Size: Connector accepts 12 AWG
maximum

Output Power: 40 watts @ 100 V

(1) 2.1 x 5.5 mm dc power connector
24 volt dc power input (power pack included)

2

;

5 G

6

PWR

O

7 BASS

8 TREBLE

9 VOLUME Rotary input level adjustment

1. Interface connectors for AUDIO IN, and AUDIO OUT ports are provided with the unit.

2. Stereo input is internally summed to mono.

(1) 6-32 screw, chassis ground lug

(1) green LED, indicates operating power
supplied from external power pack

Rotary low frequency boost/cut adjustment,
flat at center detent

Rotary high frequency boost/cut adjustment,
flat at center detent

6  Media Presentation Audio Amplifier: MP-AMP40-70/100V Operations & Installation Guide – DOC. 7354A

Crestron MP-AMP40-70/100V Media Presentation Audio Amplifier

Setup

Installation

Mount the MP-AMP40 to a flat surface near the audio source equipment, using
included adhesive feet or mounting brackets (screws not supplied).

Hardware Hookup

Hardware Connections for the MP-AMP40-70/100V (MP-AMP40-70 Shown)

Before applying power, do the following:

1. Connect all input and output cables (refer to the above illustration).

2. Set the BASS and TREBLE controls to their default center detent

positions, and set the VOLUME control to a low (counterclockwise)
position.

Apply power and verify operation as follows:

1. With the 24 Vdc power source connected, the green LED should be

illuminated.

2. Slowly turn the VOLUME control clockwise until the audio is at a

comfortable level.

3. Adjust the TREBLE and BASS controls to suit personal preference.

Operations & Installation Guide – DOC. 7354A Media Presentation Audio Amplifier: MP-AMP40-70/100V  7

Media Presentation Audio Amplifier Crestron MP-AMP40-70/100V

Problem Solving

Troubleshooting

The following table provides corrective action for possible trouble situations. If
further assistance is required, please contact a Crestron customer service
representative.

MP-AMP40-70/100 Troubleshooting

TROUBLE POSSIBLE CAUSE(S) CORRECTIVE ACTION

Power LED does
not illuminate.

Audio is distorted
or not present at
speakers.

Audio not present
at either left or
right channel

MP-AMP40-70/100 is not
receiving power.

Audio input or speaker
cables are loose or not
connected.

Speaker was momentarily
disconnected or shorted.

Verify that the power supply
is connected and turned on.

Verify that all cables are
securely and correctly
connected at both ends.

Reconnect speaker and re­apply power.

NOTE: Any momentary short, misconnection, or overload causes the protective
circuits to turn the unit off. Once the fault is cleared, the unit should automatically
recover. Should it not, recycling power ensures full recovery.

Further Inquiries

To locate specific information or to resolve questions after reviewing this guide,
contact Crestron's True Blue Support at 1-888-CRESTRON [1-888-273-7876] or
refer to the listing of Crestron worldwide offices on the Crestron Web site
(www.crestron.com/offices

To post a question about Crestron products, log onto the Online Help section of the
Crestron Web site (www.crestron.com/onlinehelp
user account to fully benefit from all available features.

) for assistance within a particular geographic region.

). First-time users must establish a

Future Updates

As Crestron improves functions, adds new features and extends the capabilities of
the MP-AMP40-70/100, additional information may be made available as manual
updates. These updates are solely electronic and serve as intermediary supplements
prior to the release of a complete technical documentation revision.

Check the Crestron Web site periodically for manual update availability and its
relevance. Updates are identified as an “Addendum” in the Download column.

8  Media Presentation Audio Amplifier: MP-AMP40-70/100V Operations & Installation Guide – DOC. 7354A

Crestron MP-AMP40-70/100V Media Presentation Audio Amplifier

Return and Warranty Policies

Merchandise Returns / Repair Service

1. No merchandise may be returned for credit, exchange or service without prior authorization from

Crestron. To obtain warranty service for Crestron products, contact an authorized Crestron dealer.
Only authorized Crestron dealers may contact the factory and request an RMA (Return
Merchandise Authorization) number. Enclose a note specifying the nature of the problem, name
and phone number of contact person, RMA number and return address.

2. Products may be returned for credit, exchange or service with a Crestron Return Merchandise

Authorization (RMA) number. Authorized returns must be shipped freight prepaid to Crestron, 6
Volvo Drive, Rockleigh, N.J. or its authorized subsidiaries, with RMA number clearly marked on
the outside of all cartons. Shipments arriving freight collect or without an RMA number shall be
subject to refusal. Crestron reserves the right in its sole and absolute discretion to charge a 15%
restocking fee plus shipping costs on any products returned with an RMA.

3. Return freight charges following repair of items under warranty shall be paid by Crestron,

shipping by standard ground carrier. In the event repairs are found to be non-warranty, return
freight costs shall be paid by the purchaser.

Crestron Limited Warranty

Crestron Electronics, Inc. warrants its products to be free from manufacturing defects in materials and
workmanship under normal use for a period of three (3) years from the date of purchase from Crestron,
with the following exceptions: disk drives and any other moving or rotating mechanical parts, pan/tilt heads
and power supplies are covered for a period of one (1) year; touch screen display and overlay components
are covered for 90 days; batteries and incandescent lamps are not covered.

This warranty extends to products purchased directly from Crestron or an authorized Crestron dealer.
Purchasers should inquire of the dealer regarding the nature and extent of the dealer's warranty, if any.

Crestron shall not be liable to honor the terms of this warranty if the product has been used in any
application other than that for which it was intended or if it has been subjected to misuse, accidental
damage, modification or improper installation procedures. Furthermore, this warranty does not cover any
product that has had the serial number altered, defaced or removed.

This warranty shall be the sole and exclusive remedy to the original purchaser. In no event shall Crestron
be liable for incidental or consequential damages of any kind (property or economic damages inclusive)
arising from the sale or use of this equipment. Crestron is not liable for any claim made by a third party or
made by the purchaser for a third party.

Crestron shall, at its option, repair or replace any product found defective, without charge for parts or labor.
Repaired or replaced equipment and parts supplied under this warranty shall be covered only by the
unexpired portion of the warranty.

Except as expressly set forth in this warranty, Crestron makes no other warranties, expressed or implied,
nor authorizes any other party to offer any warranty, including any implied warranties of merchantability or
fitness for a particular purpose. Any implied warranties that may be imposed by law are limited to the terms
of this limited warranty. This warranty statement supersedes all previous warranties.

Operations & Installation Guide – DOC. 7354A Media Presentation Audio Amplifier: MP-AMP40-70/100V  9

Crestron Electronics, Inc. Operations & Installation Guide – DOC. 7354A

15 Volvo Drive Rockleigh, NJ 07647 (2033569)
Tel: 888.CRESTRON 12.12
Fax: [phone] Specifications subject to
www.crestron.com change without notice.