McIntosh MB50 User manual

McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903-2699 Phone: [phone] www.mcintoshlabs.com
MB50
Streaming Audio Player
Owner’s Manual

2
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is intended to alert the user to the presence of uninsulated “dan-
gerous voltage” within the product’s enclosure that may be of suf-
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alert the user to the presence of important operating and mainte-
nance (servicing) instructions in the literature accompanying the
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ATTENTION:
RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR
WARNING - TO REDUCE RISK OF
FIRE OR ELECTRICAL SHOCK, DO
NOT EXPOSE THIS EQUIPMENT TO
RAIN OR MOISTURE.
NO USER-SERVICEABLE PARTS INSIDE. RE-
FER SERVICING TO QUALIFIED PERSONNEL.
To prevent the risk of electric shock,
do not remove cover or back. No
user-serviceable parts inside.
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with a dry cloth.
7. Do not block any ventilation openings. Install in accor-
dance with the manufacturer’s instructions.
8. Do not install near any heat sources such as radiators,
heat registers, stoves, or other apparatus (including
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9. Do not defeat the safety purpose of the polarized or
grounding-type plug. A polarized plug has two blades
with one wider than the other. A grounding type plug
has two blades and a third grounding prong. The wide
blade or the third prong are provided for your safety.
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consult an electrician for replacement of the obsolete
outlet.
10. Protect the power cord from being walked on or
pinched particularly at plugs, convenience receptacles,
and the point where they exit from the apparatus.
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manufacturer.
12. Use only with the cart, stand, tripod, bracket, or table
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the apparatus. When a cart is used, use
caution when moving the cart/apparatus
combination to avoid injury from tip-over.
13. Unplug this apparatus during lightning storms or when
unused for long periods of time.
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vicing is required when the apparatus has been dam-
aged in any way, such as power-supply cord or plug is
damaged, liquid has been spilled or objects have fallen
into the apparatus, the apparatus has been exposed
to rain or moisture, does not operate normally, or has
been dropped.
15. Do not expose this equipment to dripping or splashing
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vases, are placed on the equipment.
16. If this equipment is supplied with a power supply cord
only, the mains plug of the power supply cord shall
remain readily operable. To completely disconnect
this equipment from the a.c. mains remove the plug
from the a.c. receptacle.
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prise murale.
17. If this equipment is supplied with AC /DC Adapter
with separate power supply cord or the AC/DC
Adapter plugging directly into an a.c. receptacle, they
shall remain readily operable. To completely discon-
nect this equipment from the a.c. mains remove the
AC /DC Adapter mains power supply cord from the
a.c. receptacle or remove the AC /DC Adapter when it
is directly plugged into the a.c. receptacle.
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munis d’un cordon d’alimentation ou un adaptateur
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de l’adaptateur AC/DC de la prise murale.
18. WARNING: Do not expose batteries or battery pack to
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ne doivent pas etre exposees a une chaleur excessive
telle que celle du soleil, feu ou autre source de chaleur
similaire.
19. CAUTION: danger of explosion if battery is incorrect-
ly replaced. Replace only with the same or equivalent
type.
ATTENTION: danger d’explosion si la pile n’est pas
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20. Connect mains power supply cord only to a mains
socket outlet with a protective earthing connection.
IMPORTANT SAFETY
INSTRUCTIONS!
PLEASE READ THEM BEFORE
OPERATING THIS EQUIPMENT.

3
Trademark and License Information
Trademark and License Information
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mark of the Wi-Fi Alliance.
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sponsible for compliance could void the user’s authority to operate
the equipment.
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following:
NOTE: This equipment has been tested and found to comply with
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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 con-
nected.
—Consult the dealer or an experienced radio/ TV
technician for help.
—This device complies with Industry Canada
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device must accept any interference, including
interference that may cause undesired operation of
the device.
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d’Industrie Canada applicables aux appareils radio
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de l’appareil doit accepter tout brouillage
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susceptible d’en compromettre le fonctionnement.
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FCC INFORMATION (For US and Canada Customers)
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lowing Technologies:

4
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ing Audio Player ranks you at the very top among
discriminating music listeners. You now have the best.
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assures many years of musical enjoyment.
Please take a short time to read the information in this
guide. We want you to be as familiar as possible with
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Thank You
Please Take A Moment
Technical Assistance
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that may be part of your system. If you or your Dealer
wish additional help concerning a suspected problem,
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products at:
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Phone: [phone]
Fax: [phone]
Customer Service
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need of repair, you can return it to your Dealer. You
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Department. For assistance on factory repair return
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at:
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Phone: [phone]
Fax: [phone]
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name are important to you for possible insurance
claim or future service. The spaces below have been
provided for you to record that information:
6HULDO1XPEHU _______________________________
Purchase Date: _______________________________
Dealer Name: ________________________________
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Table of Contents .................................................................4
General Information ............................................................5
Connector and Cable Information.......................................5
Introduction ......................................................................... 6
Performance Features .......................................................... 6
Dimensions ..........................................................................7
Installation ...........................................................................8
Rear Panel Connections and AC/DC Adapter.....................9
Connecting to a Preamplifier or A/V Control Center....... 10
Connecting to a Power Amplifier...................................... 11
Front Panel Display and Push-buttons ..............................12
How to use the Remote Control......................................... 13
+RZWR6HW8SWKH0%IRU3OD\)L ........................... 14-15
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Packing Instructions ................................................. 19
Table of Contents

5
of the supplied Antennas, order part number
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the speed and operational range of the Wireless
Router used.
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Computer Network with a Wireless Router, the
speed should be 1 Gigabit or faster.
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https://itunes.apple.com/us/app/play-fi/
id779245456?mt=8
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https://play.google.com/store/apps/details?id=com.
phorus.playfi&hl...
11. When discarding the unit, comply with
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never be thrown away or incinerated but
disposed of in accordance with the local regula-
tions concerning battery disposal.
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www.mcintoshlabs.com for the latest information
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1. For additional connection information, refer to the
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from a mobile device, a wireless router with Wi-Fi
capabilities is required, in order to facilate com-
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device.
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Computer Network (of which
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majority of Audio Power Amplifiers. However, do
to a wide range of Power Amplifier Designs, it is
important the input sensitivity of the amplifier be
at least 2 Volts. This will assure music recordings
are reproduced with adequate dynamic range. This
will assure the playback of most music record-
ings are reproduced with adequate dynamic range.
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information.
6. If it should become necessary
to replace the supplied AC / DC
Power Adapter, order part num-
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Parts Department.
7. For proper wireless operation the
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:/$1$QWHQQDV,ILWVKRXOG
become necessary to replace one
XLR Connectors
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for connection:
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PIN 2: + Output
PIN 3: - Output
Power Control Connector
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Components. The Trigger Output
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An additional connection is for
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mini phone plug is used for connection to the Power
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General Information Connector and Cable Information
PIN 1 PIN 2
PIN 3
Power
Control
Ground
Meter
Illumination
Control
Pass Thru
General Information, Connector and Cable Information

6
Introduction and Performance Features
Introduction
Performance Features
Built-in Networking Capability
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Internet Streaming Radio
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Play-Fi App.
Local AM/FM Radio Stations
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device using the Play-Fi App.
Digital Audio Inputs and Outputs
There are Coaxial and Optical Digital Audio Inputs
and Outputs for connection to other components.
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for compatibility with a wide range of audio compo-
nents.
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cable lengths without a loss in sound quality.
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The Trigger Control Input connection provides conve-
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0F,QWRVK6\VWHPZLWK3RZHU&RQWURO
5HPRWH&RQWURO
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operating functions when using contemporary compo-
nents.
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The even Illumination of the Front Panel is accom-
plished by the combination of custom designed Fiber
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WLQJ'LRGHV/('V
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)LQLVK
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retained for many years.
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the latest in audio technology, providing state of the
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RWKHU'HYLFHV:KHQWKH0%LVDGGHGWRD0F-
,QWRVK6\VWHPWKHPXVLFIURPWKLVVRXUFHPD\EH
enjoyed in your home. The advanced design ensures
many years of smooth trouble free operation.

7
Dimensions
The following dimensions can assist in determining
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Dimensions
Rear View of the MB50
Side View of the MB50
Front View of the MB50
11-1/2"
29.2cm
2-17/32"
6.4cm
3-9/32"
8.3cm
3-1/2"
8.9cm
11"
27.9cm
2-7/16"
6.2cm
7-1/2"
19.0cm
13-1/2"
34.3cm
1-5/8"
4.1cm
29/32"
1.8cm
WLAN ANT 1 WLAN ANT 2
9"
22.8cm
12-7/16"
31.6cm
4-13/16"
12.2cm

8
Installation
Installation
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placed upright on a table or shelf, standing on its feet.
The required ventilation requirements are shown.
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Cool operation ensures the longest possible operating
life for any electronic instrument. Do not install the
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depth for airflow and cable connections.
MB50 Side View
13-1/2"
34.3cm
MB50 Front View
1"
2.5cm 1"
2.5cm
1"
2.5cm
1"
2.5cm

9
WLAN ANT 1 WLAN ANT 2
TRIGGER IN receives turn-on
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and TRIGGER OUT sends turn-
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Component
Connect the supplied
AC/DC Power Adapter
DC Output Connnector
&2$;LDODQG237,&$/
',*,7$/$8',22873876
VHQGD'LJLWDO$XGLR6LJQDOWRD
Preamplifier or an A/V Control
Center with a D/A Converter or
a decoder
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ply analog audio signals to connect to
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81%$/DQFHG$8',2
2873876VXSSO\DQDORJ
audio signals to Unbalanced
Inputs of other components
Rear Panel Connections and AC/DC Adapter Connections
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connection to a wired
network via an adapter1
and for service use
Connect to the DC IN 5V
connector on the Rear Panel
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Audio Player
The AC/DC Power Adapter supplied
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:/$1:LUHOHVV/RFDO$UHD1HW-
ZRUN$17HQQDIRUUHFHLYLQJ3OD\)L
and Wi-Fi signals
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accept high level signals
from a source with an
unbalanced output
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',*,7$/$8',2,13876
accepts a Digital Audio
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coaxial or optical outputs
1for additional information refer to page 5 “General Information”, number 3
&RQQHFWWRDOLYH$&RXWOHWDOZD\V2Q
using the supplied AC Power Cord. Re-
fer to information on the power supply
to determine the correct voltage
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/RFDO$UHD1HWZRUN
ANTenna for receiv-
ing Play-Fi and Wi-Fi
signals

10
Connecting to a Preamplifier or A/V
Control Center
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&HQWHUYLDWKH7ULJJHU3RZHU&RQWURO&RQQHFWLRQ
The connection instructions below, together with
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rate folded sheet “Mc1A”, is an example of a typi-
cal audio system. Your system may vary from this,
however the actual components would be connected in
a similar manner. For additional information refer to
“Connector and Cable Information” on page 5.
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1. Connect a Control Cable from the Preamplifier
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$&&-DFNWRWKH75,**(53RZHU&RQWURO,1
-DFNRQWKH0F,QWRVK0%6WUHDPLQJ$XGLR
Player.
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*(5287-DFNWRWKH6$&'&'7UDQVSRUW3RZHU
Control IN.
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3RZHU&RQWURO2XWWRWKH$0)07XQHU3RZHU
Control In.
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3RZHU&RQWURO2XWWRWKH0HGLD%ULGJH6HUYHU
Power Control In.
5. Connect any additional components in a similar
manner, as outlined in steps 2 thru 4.
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0%',*,7$/$8',2237,&$/,1387WR
WKH'LJLWDO$XGLR2SWLFDO2XWSXWRIWKH6$&'&'
Player.
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0%',*,7$/$8',2&2$;,$/,1387WR
WKH'LJLWDO$XGLR&RD[LDO2XWSXWVRIWKH0HGLD
%ULGJH6HUYHU
$QDORJ$XGLR&RQQHFWLRQV
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LQJ$XGLR3OD\HU$8',2287387%$/$1&('
Connectors to the Preamplifier or A/V Control
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Note: Unbalanced connections may be used instead
of the Balanced Connections.
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%$/DQFHG$8',2,1387WRWKH$0)07XQHU
Unbalanced Output.
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2SWLRQDOO\XVLQJDQ86%WR(WKHUQHW$GDSWHU
FRQQHFWWKH0%86%&RQQHFWRUWRWKH&$7
5/6 Ethernet Cable. Connect the other end of the
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Connector.
11. Connect another CAT 5/6 Ethernet Cable from the
Wired Router to a Wireless Router.
Note: The Wireless Router facilitates communica-
tion and streaming from a mobile device to the
MB50.
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munications with a Wireless Router (no wired
1HWZRUN&RQQHFWLRQVPDNHVXUHWRFRQQHFWWKH
VXSSOLHG:/$1$QWHQQDVWRWKH:/$1$17
DQG:/$1$17FRQQHFWRUVRQWKH0%5HDU
Panel.
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RIWKHVXSSOLHG$&'&3RZHU6XSSO\DQGFRQQHFW
it to the DC IN 5V connector on the Rear Panel of
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14. Connect the supplied AC Power Cord between the
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Connecting to a Preamplifier or A/V Control Center

11
Connecting to a Power Amplifier
Connecting to a Power Amplifier
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QHQWVFRQQHFWHGWRLWYLDWKH7ULJJHU3RZHU&RQWURO
Connection.
The connection instructions below, together with
WKH0%&RQQHFWLRQ'LDJUDPORFDWHGRQWKHVHSD-
rate folded sheet “Mc1B”, is an example of a typi-
cal audio system. Your system may vary from this,
however the actual components would be connected in
a similar manner. For additional information refer to
“Connector and Cable Information” on page 5.
7ULJJHU3RZHU&RQWURO&RQQHFWLRQV
&RQQHFWD&RQWURO&DEOHIURPWKH0%75,*-
*(5287-DFNWRWKH6$&'&'7UDQVSRUW3RZHU
Control IN.
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3RZHU&RQWURO2XWWRWKH$0)07XQHU3RZHU
Control In.
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3RZHU&RQWURO2XWWRWKH0HGLD%ULGJH6HUYHU
Power Control In.
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6HUYHU3RZHU&RQWURO2XW-DFNWRWKH3RZHU&RQ-
WURO,Q-DFNRQWKH3RZHU$PSOLILHU
5. Connect any additional components in a similar
manner, as outlined in steps 2 thru 4.
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&RQQHFWDQ2SWLFDO&DEOHIURPWKH0F,QWRVK
0%',*,7$/$8',2237,&$/,1387WR
WKH'LJLWDO$XGLR2SWLFDO2XWSXWRIWKH6$&'&'
Player.
&RQQHFWD&RD[LDO&DEOHIURPWKH0F,QWRVK
0%',*,7$/$8',2&2$;,$/,1387WR
WKH'LJLWDO$XGLR&RD[LDO2XWSXWVRIWKH0HGLD
%ULGJH6HUYHU
$QDORJ$XGLR&RQQHFWLRQV
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LQJ$XGLR3OD\HU$8',2287387%$/$1&('
&RQQHFWRUVWRWKH3RZHU$PSOLILHU%DODQFHG,QSXW
Connectors.
Note: Unbalanced connections may be used instead
of the Balanced Connections.
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%$/DQFHG$8',2,1387WRWKH$0)07XQHU
Unbalanced Output.
:LUHGDQG:LUHOHVV1HWZRUN&RQQHFWLRQV
2SWLRQDOO\XVLQJDQ86%WR(WKHUQHW$GDSWHU
FRQQHFWWKH0%86%&RQQHFWRUWRWKH&$7
5/6 Ethernet Cable. Connect the other end of the
&$7(WKHUQHW&DEOHWRWKH:LUHG5RXWHU5-
Connector.
11. Connect another CAT 5/6 Ethernet Cable from the
Wired Router to a Wireless Router.
Note: The Wireless Router facilitates communica-
tion and streaming from a mobile device to the
MB50.
:KHQWKH0%ZLOOEHXWLOL]LQJGLUHFWFRP-
munications with a Wireless Router (no wired
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VXSSOLHG:/$1$QWHQQDVWRWKH:/$1$17
DQG:/$1$17FRQQHFWRUVRQWKH0%5HDU
Panel.
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/RFDWHWKHSOXJDWWKHHQGRIWKHFDEOHFRPLQJRXW
RIWKHVXSSOLHG$&'&3RZHU6XSSO\DQGFRQQHFW
it to the DC IN 5V connector on the Rear Panel of
WKH0%6WUHDPLQJ$XGLR3OD\HU
14. Connect the supplied AC Power Cord between the
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RXWOHWWKDWLVDOZD\V2Q

12
Front Panel Display and Push-buttons
Indicates by color
which Input has been
selected for listening
67$1'%<213XVKEXWWRQ
VZLWFKHVWKH0%21RU2))
6WDQGE\DQGUHVHWVWKHPLFUR-
processors
,56HQVRUUHFHLYHVFRPPDQGV
from a Remote Control
Connection for dynamic
type headphones, for
private listening
6HOHFWIURPRQHRIWKH
YDULRXV,QSXW6RXUFHV
available for listening
6HOHFWIURPRQHRI
the various Network
6RXUFHVDYDLODEOHIRU
listening
Adjusts the listening level for
both channels Up or Down
DQGDOVR0XWHVWKHVRXQG
Indicates by color and
flashing which Network
has been selected and
communication status
Indicates when minimum
listening level has been
reached and flashes when
0XWLQJLVDFWLYH
Indicates when maximum
listening level has been
reached and flashes when
0XWLQJLVDFWLYH
,QGLFDWHVZKHQWKH0%LVLQ
6WDQGE\,WDOVR,QGLFDWHVWKH
current operational status

13
8VHGWR3$86(3OD\EDFNRIWKH
track
How to use the Remote Control
3RZHUVWKH0%21RU2))
0XWHVDQGXQPXWHVWKHDXGLR
Increases the volume level
/('LOOXPLQDWHVGXULQJWKHWLPH
a remote command is sent to the
0%
$FWLYDWHVWKH3/$<%$&.ŹRI
a track
Decreases the volume level
6HOHFWVWKHGHVLUHG,1387
Use to move through the available choices
up, down, left, right; of menu items with an
RSWLRQDO0F,QWRVK'LVF3OD\HUFRQQHFWHG
WRWKH0%
Tunes Up the Dial with
RSWLRQDO0F,QWRVK7XQHU
FRQQHFWHGWRWKH0%
Tunes Down the Dial with
RSWLRQDO0F,QWRVK7XQHUFRQ-
QHFWHGWRWKH0%
How to use the Remote Control
The supplied Remote Control performs the various
2SHUDWLQJ)XQFWLRQVIRUWKH0%6WUHDPLQJ$XGLR
Player.
Note: Refer to the “How to Operate” Section of this
manual for additional information.
Input Source Selection
Press the Push-button ĺto select the desired program
source.
Volume
Press the +or -Push-buttons to increase or de-
crease the listening level.
Mute
3UHVVWKH0XWH3XVKEXWWRQWRPXWHWKHDXGLR
7KH92/80(/('LQGLFDWRUVZLOOIODVKDWDVORZ
UDWHGXULQJWKHWLPHDXGLRLVPXWHG3UHVVWKH087(
Push-button a second time to resume listening.
Pause
3UHVVWKH3$86( Push-button to temporarily stop
playback of the music.
Note: Push-buttons whose function is not identified above are for use with other McIntosh Products.

14
<RXU0F,QWRVK0%LVIDFWRU\FRQILJXUHGIRULPPH-
diate enjoyment of superb audio from source compo-
nents with Digital or Analog Outputs.
,WLVKLJKO\UHFRPPHQGHGWRFRQWDFW\RXU0F,QWRVK
'HDOHUDQGRU0RELOH'HYLFH'HDOHUIRUDVVLVWDQFHLQ
the installation and configuring the Wireless Router
and/or the wired network with a Wireless Router. Your
Dealer has the necessary knowledge to properly set
Introduction to Setting Up the MB50
XSWKH0%DVSDUWRI\RXU+RPH1HWZRUNZLUHGRU
wireless.
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PXVLFIURP\RXUPRELOHGHYLFHLWLVQHFHVVDU\WRILUVW
HVWDEOLVK:L)LZLUHOHVVFRPPXQLFDWLRQVEHWZHHQ
WKH0%DQGWKHPRELOHGHYLFH
The instructions below and the illustrations of
0%4XLFN6WDUW*XLGHORFDWHGRQWKHVXSSOLHG
McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903-2699 Phone: [phone] www.mcintoshlabs.com Part No. 04138401
WLANANT 1 WLANANT 2
STEP 7
MB50 Quick Start Guide Sheet 2
®
STEP 8 ESTABLISH COMMUNICATIONS WITH THE MB50
ESTABLISH CONNECTION WITH
A WIRELESS ROUTER
1st - POWER ON THE MB50
SELECT
SETTINGS
SELECT
WI-FI
SETTINGS
SELECT
YOUR
ROUTER
2nd - FLASHING INDICATOR
WHITE FOR WIRELESS NET.
GREEN FOR WIRED NET.
NOTE: If your Apple Powered Mobile Device or Android Powered
Mobile Device is currently Wi-Fi Connected to your Wire-
less Router, proceed to STEP 8
USB
to
Ethernet
Adapter1
Wired Network
Router
Wireless
Network
Router
Wireless
Network
Router
OR
WIRED NETWORK
WITH WIRELESS
WI-FI ROUTER
WIRELESS
NETWORK WI-FI
ROUTER
NOTES:
1Refer to the MB50 Owner’s Manual, page 5, note 3 for
additional information.
2 The term “Your Network” is used to refer to name of the
wired Network (with Wireless Router) connected to the
MB50 or just a Network Wireless Router used with the
MB50.
3It is advisable, during the initial communications setup,
to physically locate the MB50 and the Wireless Router in
close proximity to one another.
3rd - SELECT
“PLAY-FI APP”.
4th - SELECT
“Set-up New Device”.
*
5th - SELECT
“Settings”
6th - SELECT
“Wi Fi”
7th - LOCATES
Play-Fi Device
(MB50)
8th - Setting Up
communications
with MB50
9th - Communications
established with
MB50
Proceed to
STEP 9 on
next page
Figure 1
VHSDUDWHIROGHGVKHHWVZLOODLGLQHVWDEOLVKLQJWKH
communications. Refer to figures 1 and 2.
5HIHUULQJWR6WHSDFWLYDWHWKH:L)LFRPPXQL-
FDWLRQIXQFWLRQRQ\RXU0RELOH'HYLFH
6HOHFWWKH:LUHOHVV5RXWHULFRQRUWKH1HWZRUN
with a Wireless Router icon.
5HIHUULQJWR6WHSVZLWFKSRZHU2QWRWKH
0%DQGWKH:L)L1HW/('ZLOOVWDUWIODVKLQJ

15
How to Setup the MB50 for Play-Fi
STEP 9 Play-Fi Settings
1st - SELECT
“PLAY-FI APP”.
2nd - SELECT
“Your Network”.
3nd - Enter your
Network
Password
if required
4th - SELECT
“Set-up”
Play-Fi
Connecting
to Your Router
5th - SELECT the name
of the room were the
MB50 is located.
6th - SELECT “Music”
to start playback of
desired music.
MB50 Quick Start Guide Sheet 3
Figure 2
)LUVWVHOHFWWKH³3/$<),$SS´LFRQDQGWKHQWKH
³6HWXS1HZ'HYLFH´LFRQ
1RZVHOHFWWKHPRELOHGHYLFH³6HWWLQJV´LFRQDQG
then select the Wi-Fi settings.
6HOHFWWKH³3OD\)L'HYLFH´ZKHQFRPPXQLFD-
tions has been established a 9FKHFNPDUNZLOO
appear.
6HOHFWWKH³3/$<),$SS´LFRQDQGWKHQVHOHFW
³\RXU1HWZRUN´RU5RXWHU
8. If your Network requires a password enter it at
this time.
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your Network/Router.
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located.
6HOHFW³0XVLF´
3URFHHGWRSDJH³+RZWR2SHUDWHWKH0%´

16
Source Selection
To select the desired audio source, press the INPUT
3XVKEXWWRQRQWKH)URQW3DQHORIWKH0%RUSUHVV
the ĺ,QSXW3XVKEXWWRQRQWKH5HPRWH&RQWURO
until the desired source is selected. Refer to figures 30
and 31.
MB50 Inputs
Music Source Indicator Color
:L)L3OD\)L0RELOH'HYLFH White
NET - Play-Fi over the Network
&2$;'LJLWDOFRD[LDOFRQQHFWLRQ
to an external source Red
237,&$/'LJLWDORSWLFDOFRQQHFWLRQ
to an external source Green
81%$/$QDORJVWHUHRFRQQHFWLRQ
to an external source %OXH
Note: The Mobile Device will pause the current
track playing when switching to another Input
Source on the MB50.
Volume Level
7RLQFUHDVHWKH9ROXPH/HYHOSUHVVWKH)URQW3DQHO
92/80(Ÿ8SSXVKEXWWRQRUWKH92/80(+
push-button on the Remote Control to increase the
YROXPHWRWKHGHVLUHGOHYHO7KH/('LQGLFDWRUDERYH
WKH)URQW3DQHO92/80(Ÿ8SSXVKEXWWRQZLOO
illuminate continuously during the increase of Volume
/HYHO:KHQWKHPD[LPXPYROXPHOHYHOLVUHDFKHG
WKH/('ZLOOIODVKUDSLGO\
7RGHFUHDVHWKH9ROXPH/HYHOSUHVVWKH)URQW3DQHO
92/80(ź'RZQSXVKEXWWRQRUWKH92/80(
-push-button on the Remote Control to decrease
WKHYROXPHWRWKHGHVLUHGOHYHO7KH/('LQGLFDWRU
DERYHWKH)URQW3DQHO92/80(ź'RZQ will il-
luminate continuously during the decrease of Volume
/HYHO:KHQWKHPLQLPXPYROXPHOHYHOLVUHDFKHGWKH
/('ZLOOIODVKUDSLGO\
Standby Indicator Color Operation Mode
Red 3RZHU6DYH0RGH
Yellow 6WDQGE\0RGH
Green 2Q0RGH
Power Mode
7KH0%LQFRUSRUDWHVDQ$XWR2II)HDWXUHZKLFK
DXWRPDWLFDOO\SODFHVLWLQWRWKH3RZHU6DYLQJ0RGH
This occurs approximately 2 hours after there has
been an absence of audible audio signals on the se-
lected input or user activity (includes changes to any
of the Operation Functions such as Input selection,
9ROXPHDGMXVWPHQWHWF,ILWLVGHVLUHGWRGLVDEOHWKH
Auto Off Feature, perform the following steps:
1. Press and hold simultaneously the Wi-Fi/NET
DQG92/80(ź'RZQ3XVKEXWWRQVXQWLOWKH
)URQW3DQHO'LVSOD\:L)L1(7/(',QGLFDWRU
changes color from Green to Red. Then release the
WZR3XVKEXWWRQV7KH3RZHU6DYH0RGHLVQRZ
disabled.
7RHQDEOHWKH3RZHU6DYH0RGHUHSHDWVWHSDQG
WKH:L)L1(7/(',QGLFDWRUZLOOFKDQJHFRORU
from Red to Green.
How to Operate the MB50, con’t
How to Operate the MB50
<RXU0F,QWRVK0%LVIDFWRU\FRQILJXUHGIRULPPH-
GLDWHHQMR\PHQWRIVXSHUEDXGLRIURPD0RELOH'HYLFH
via Play-Fi or one of the external devices connected to
WKH5HDU3DQHORIWKH0%
If you wish to make a Play-Fi wireless connection
EHWZHHQWKH0RELOH'HYLFHDQGWKH0%SOHDVH
UHIHUWR³+RZWR6HWXSWKH0%IRU3OD\)L´RQSDJH
14 for additional information.
Power On
3UHVVWKH2167$1'%<3XVKEXWWRQRQWKH)URQW
3DQHORIWKH0%RUSUHVVWKH3RZHU3XVKEXWWRQ
RQWKH5HPRWH&RQWUROWRVZLWFK2QWKH0%5HIHU
to figures 30 and 31.
Notes: 1. When the MB50 is in the Standby Mode and
a Mobile Device is connected via a Wi-Fi
connection, the MB50 will automatically
switch On.
2. The MB50 will automatically switch OFF
approximately 2 hours after the music has
stopped playing.
3. By pressing and holding in the ON/STAND-
BY Push-button on the Front Panel of the
MB50 for 5 seconds, the Power Save Mode
will now active.
Figure 30

17
Mute
To mute the volume level, simultaneously press the
92/80(ź'RZQDQGŸ8SSXVKEXWWRQVRQ
WKH)URQW3DQHORIWKH0%RUSUHVVWKH0XWH
push-button on the Remote Control. During the time
WKHVRXQGLVPXWHGWKH9ROXPH/('VRQWKH)URQW
Panel will flash at a slow rate. To unmute and return
to the previous volume level, simultaneously press
W K H  9 2 / 8 0 (  ź ' R Z Q   D Q G  Ÿ 8 S  S X V K  E X W W R Q V  R U 
SUHVV0XWHSXVKEXWWRQRQWKH5HPRWH&RQWURO
3UHVVLQJHLWKHUWKH92/80(ź'RZQRUŸ8S
SXVKEXWWRQRQWKH)URQW3DQHORUWKH92/80(-
or + RQWKH5HPRWH&RQWUROZLOODOVRXQ0XWHWKH
0%
Play-Fi
)RU0RELOH'HYLFHVSHFLILFRSHUDWLQJLQIRUPDWLRQ
$SSOHRU$QGULRGJRWRWKH3OD\)LZHEVLWHDW
https://play-fi.com/
Reset of Microprocessors
,QWKHXQOLNHO\HYHQWWKHFRQWUROVRIWKH0%VWRS
functioning, the internal microprocessors can be reset
by performing the following:
3UHVVDQGKROGLQWKHWKH)URQW3DQHO67$1'%<
ON Push-button for 10 seconds.
2. Press the On/Off Push-button to resume listening.
Resetting to Factory Default Settings
,ILWEHFRPHVGHVLUDEOHWRUHVHWDOORIWKH0%VHW-
tings to the factory default values, perform the follow-
ing steps:
:LWKWKH0%2QSUHVVDQGKROGLQVLPXOWDQH-
RXVO\WKH,1387DQG67$1'%<213XVKEXW-
tons.
2. Release the push-buttons when the Front Panel
/('6VWDUWIODVKLQJ
3UHVVWKH67$1'%<21DQGUHIHUWRSDJHWR
UHHVWDEOLVKFRPPXQLFDWLRQVZLWK\RXU0RELOH
Device.
How to Operate the MB50
Figure 31

18
6SHFL¿FDWLRQV
Audio Specifications Digital Audio Specifications
Power Requirements
100-240 Volts, 50/60Hz at 10 Watts
6WDQGE\/HVVWKDQZDWW
Overall Dimensions
:LGWKLVLQFKHVFP
+HLJKWLVLQFKHVFP
'HSWKLVLQFKHVFPLQFOXGLQJWKH)URQW
Panel and connection cables.
:HLJKW
SRXQGV.JQHWLQFOXGHVWKHH[WHUQDO3RZHU
6XSSO\SRXQGV.JLQVKLSSLQJFDUWRQ
6KLSSLQJ&DUWRQ'LPHQVLRQV
:LGWKLVLQFKHVFP
+HLJKWLVLQFKHVFP
'HSWKLVLQFKHVFP
General Specifications
Power Control Input
5-15VDC, less than 1mA
Power Control Output
12VDC, 25mA maximum total
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Frequency Response
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0.005%
Sensitivity
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Maximum Input Signal
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Variable Output level
0 - 6.0Vrms Unbalanced
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Dynamic Range
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Output Impedance
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Digital Input Signal Format
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Digital Input Sample Rate
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Digital Inputs
Coaxial: 0.5V p-p/75 ohms
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CD Discs, etc.
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Used for firmware Updates and Network Connection
using a special adapter (see page 5, note 3 for addi-
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USB Connector
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Wi-Fi Connectivity

19
Packing Instructions
Packing Instructions
In the event it is necessary to repack the equipment for
shipment, the equipment must be packed exactly as
shown below. It is very important that the four plas-
tic feet are attached to the bottom of the equipment.
This will ensure the proper equipment location on the
bottom pad. Failure to do this will result in shipping
damage.
Use the original shipping carton and interior parts
only if they are all in good serviceable condition. If
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PHQWRI0F,QWRVK/DERUDWRU\5HIHUWRSDJH3OHDVH
VHHWKH3DUW/LVWIRUWKHFRUUHFWSDUWQXPEHUV
4XDQWLW\ Part Number Description
   6KLSSLQJFDUWRQRQO\
   6LGH)RDP3DG
4 163073 Plastic foot
4 400159 #10-32 x 3/4” screw
4 404080 #10 Flat washer
A.C. Cord and
Wi-Fi Antennas Remote Control
AC/DC Adapter
Side Foam
Pad
Shipping Carton
Side Foam
Pad

The continuous improvement of its products is the
policy of McIntosh Laboratory Incorporated who
reserve the right to improve design without notice.
Printed in the U.S.A.
McIntosh Laboratory, Inc.
2 Chambers Street
Binghamton, NY 13903
www.mcintoshlabs.com
McIntosh Part No. 04156900