YAMAHA AD8HR User Manual
Owner’s Manual
Thank you for choosing the Yamaha AD8HR AD converter with remote microphone
preamp.
The AD8HR is an eight-channel AD converter equipped with remote microphone
preamps that feature 96kHz, 24-bit linear AD conversion, 128-times oversampling,
and a dynamic range of 110dB. Its input section features balanced XLR connectors,
high-quality mic preamps, +48V phantom power, and support for both mic and linelevel inputs. The output section supports the AES/EBU format and features a high
sampling frequency of 88.2/96kHz. You can easily adjust the gain for each channel
(in 1dB steps) and set up the high pass filter from the front panel. These settings are
stored in the unit’s backup memory, and are retained even after the power is turned
off. In addition, a special protocol enables you to remotely control the unit from a
connected computer or other device.
Please read this manual thoroughly before using the unit to take the greatest
advantage of the AD8HR’s extensive features for the longest period of time. After you
read this manual, please keep it in a safe place.
EN
PRECAUTIONS
PLEASE READ CAREFULLY BEFORE PROCEEDING
* Please keep this manual in a safe place for future reference.
WARNING
Always follow the basic precautions listed below to avoid the possibility of serious injury or even death from electrical
shock, short-circuiting, damages, fire or other hazards. These precautions include, but are not limited to, the following:
Power supply/Power cord
• Only use the voltage specified as correct for the device. The required voltage is
printed on the name plate of the device.
• Use only the included power cord. If you intend to use the device in an area
other than in the one you purchased, the included power cord may not be
compatible. Please check with your Yamaha dealer.
• Do not place the power cord near heat sources such as heaters or radiators, and do
not excessively bend or otherwise damage the cord, place heavy objects on it, or
place it in a position where anyone could walk on, trip over, or roll anything over it.
• Be sure to connect to an appropriate outlet with a protective grounding
connection. Improper grounding can result in electrical shock.
Do not open
• Do not open the device or attempt to disassemble the internal parts or modify
them in any way. The device contains no user-serviceable parts. If it should
appear to be malfunctioning, discontinue use immediately and have it inspected
by qualified Yamaha service personnel.
Water warning
• Do not expose the device to rain, use it near water or in damp or wet conditions,
or place containers on it containing liquids which might spill into any openings.
• Never insert or remove an electric plug with wet hands.
If you notice any abnormality
• If the power cord or plug becomes frayed or damaged, or if there is a sudden
loss of sound during use of the device, or if any unusual smells or smoke
should appear to be caused by it, immediately turn off the power switch,
disconnect the electric plug from the outlet, and have the device inspected by
qualified Yamaha service personnel.
• If this device should be dropped or damaged, immediately turn off the power
switch, disconnect the electric plug from the outlet, and have the device
CAUTION
Always follow the basic precautions listed below to avoid the possibility of physical injury to you or others, or damage
to the device or other property. These precautions include, but are not limited to, the following:
Power supply/Power cord
• Remove the electric plug from the outlet when the device is not to be used for
extended periods of time, or during electrical storms.
• When removing the electric plug from the device or an outlet, always hold the
plug itself and not the cord. Pulling by the cord can damage it.
Location
• Before moving the device, remove all connected cables.
• Do not expose the device to excessive dust or vibrations, or extreme cold or heat
(such as in direct sunlight, near a heater, or in a car during the day) to prevent
the possibility of panel disfiguration or damage to the internal components.
• Do not place the device in an unstable position where it might accidentally fall
over.
• When setting up the product, make sure that the AC outlet you are using is
easily accessible. If some trouble or malfunction occurs, immediately turn off
the power switch and disconnect the plug from the outlet. Even when the power
switch is turned off, electricity is still flowing to the product at the minimum
level. When you are not using the product for a long time, make sure to unplug
the power cord from the wall AC outlet.
• Do not use the device in the vicinity of a TV, radio, stereo equipment, mobile
phone, or other electric devices. Otherwise, the device, TV, or radio may
generate noise.
Connections
• Before connecting the device to other devices, turn off the power for all devices.
Before turning the power on or off for all devices, set all volume levels to
minimum.
• Be sure to connect to a properly grounded power source. A ground screw
terminal is provided on the rear panel for safely grounding the device and
preventing electrical shock.
Handling caution
• Do not insert your fingers or hand in any gaps or openings on the device.
•Avoid inserting or dropping foreign objects (paper, plastic, metal, etc.) into any
gaps or openings on the device. If this happens, turn off the power immediately
and unplug the power cord from the AC outlet. Then have the device inspected
by qualified Yamaha service personnel.
• Do not rest your weight on the device or place heavy objects on it, and avoid use
excessive force on the buttons, switches or connectors.
Backup battery
• This device has a built-in backup battery. When you unplug the power cord from
the AC outlet, the internal data is retained. However, if the backup battery fully
discharges, this data will be lost. When the backup battery is running low, the
GAIN display indicates “E1.” In this case, immediately have qualified Yamaha
service personnel replace the backup battery.
XLR-type connectors are wired as follows (IEC60268 standard): pin 1: ground, pin 2: hot (+), and pin 3: cold (-).
Yamaha cannot be held responsible for damage caused by improper use or modifications to the device, or data that is lost or destroyed.
Always turn the power off when the device is not in use.
The performance of components with moving contacts, such as switches, volume controls, and connectors, deteriorates over time. Consult qualified Yamaha service
personnel about replacing defective components.
(5)-1
2
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF
ELECTRIC SHOCK, DO NOT REMOVE
COVER (OR BACK). NO USER-SERVICEABLE
PARTS INSIDE. REFER SERVICING TO
QUALIFIED SERVICE PERSONNEL.
The above warning is located on the top of the unit.
IMPORTANT SAFETY INSTRUCTIONS
Explanation of Graphical Symbols
The lightning flash with arrowhead symbol
within an equilateral triangle is intended to alert
the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that
may be of sufficient magnitude to constitute a
risk of electric shock to persons.
The exclamation point within an equilateral triangle is intended to alert the user to the presence of
important operating and maintenance (servicing)
instructions in the literature accompanying the
product.
1 Read these instructions.
2Keep these instructions.
3 Heed all warnings.
4 Follow all instructions.
5 Do not use this apparatus near water.
6 Clean only with dry cloth.
7 Do not block any ventilation openings. Install in
accordance with the manufacturer’s instructions.
8 Do not install near any heat sources such as radia-
tors, heat registers, stoves, or other apparatus
(including amplifiers) that produce heat.
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. If the provided plug does not
fit into your outlet, consult an electrician for
replacement of the obsolete outlet.
WARNING
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,
DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE.
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.
11 Only use attachments/accessories specified by
the manufacturer.
12 Use only with the cart, stand,
tripod, bracket, or table specified by the manufacturer, or
sold with the apparatus. When a
cart is used, use caution when
moving the cart/apparatus combination to avoid injury from tipover.
13 Unplug this apparatus during lightning storms or
when unused for long periods of time.
14 Refer all servicing to qualified service personnel.
Servicing is required when the apparatus has
been damaged 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.
3
IMPORTANT NOTICE FOR THE UNITED KINGDOM
Connecting the Plug and Cord
WARNING: THIS APPARATUS MUST BE EARTHED
IMPORTANT. The wires in this mains lead are coloured in accordance
with the following code:
GREEN-AND-YELLOW : EARTH
BLUE : NEUTRAL
BROWN : LIVE
As the colours of the wires in the mains lead of this apparatus may not
correspond with the coloured markings identifying the terminals in
your plug proceed as follows:
The wire which is coloured GREEN-and-YELLOW must be connected
to the terminal in the plug which is marked by the letter E or by the
safety earth symbol or colored GREEN or GREEN-and-YELLOW.
The wire which is coloured BLUE must be connected to the terminal
which is marked with the letter N or coloured BLACK.
The wire which is coloured BROWN must be connected to the terminal which is marked with the letter L or coloured RED.
• This applies only to products distributed by Yamaha-Kemble Music (U.K.) Ltd. (3 wires)
This product contains a battery that contains perchlorate material.
Perchlorate Material—special handling may apply,
See www.dtsc.ca.gov/hazardouswaste/perchlorate.
* This applies only to products distributed by YAMAHA CORPORATION OF AMERICA.
(Perchlorate)
ADVARSEL!
Lithiumbatteri—Eksplosionsfare ved fejlagtig håndtering. Udskiftning
må kun ske med batteri af samme fabrikat og type. Levér det brugte
batteri tilbage til leverandoren.
VARNING
Explosionsfara vid felaktigt batteribyte. Använd samma batterityp eller
en ekvivalent typ som rekommenderas av apparattillverkaren.
Kassera använt batteri enligt fabrikantens instruktion.
VAROITUS
Paristo voi räjähtää, jos se on virheellisesti asennettu. Vaihda paristo
ainoastaan laitevalmistajan suosittelemaan tyyppiin. Hävitä käytetty
paristo valmistajan ohjeiden mukaisesti.
(lithium caution)
NEDERLAND / THE NETHERLANDS
• Dit apparaat bevat een lithium batterij voor geheugen back-up.
• This apparatus contains a lithium battery for memory back-up.
• Raadpleeg uw leverancier over de verwijdering van de batterij op het
moment dat u het apparaat ann het einde van de levensduur of
gelieve dan contact op te nemen met de vertegenwoordiging van
Yamaha in uw land.
•For the removal of the battery at the moment of the disposal at the
end of life please consult your retailer or Yamaha representative
office in your country.
• Gooi de batterij niet weg, maar lever hem in als KCA.
• Do not throw away the battery. Instead, hand it in as small chemical
waste.
Table of Contents
Part Names and Functions ...............5
Front Panel ................................................ 5
Rear Panel.................................................. 6
Basic Operations............................... 7
Selecting the Wordclock............................. 7
Setting the Phantom Power ....................... 7
Adjusting the Gain ..................................... 7
Adjusting the Gain Trim (Gain Correction) . 7
Setting the High Pass Filter......................... 8
Copying the Channel Settings.................... 8
Selecting the AES/EBU Format.................... 8
Adjusting the LED Brightness ..................... 9
Panel Operation Lock................................. 9
Initializing the Memory .............................. 9
Remote Control ......................................... 9
(lithium disposal)
Connection Examples...................... 10
AES/EBU Connections................................10
AD8HR Daisy Chain Connection ................10
Wordclocks ...................................... 11
AES/EBU Connections................................11
WORD CLOCK jack connection .................11
Appendix ......................................... 12
General Specifications................................12
I/O Characteristics .....................................12
Electrical Characteristics............................. 13
Error Messages ..........................................14
DIGITAL OUT A/B Pin Assignment Table ....14
HA REMOTE Pin Assignment Table.............15
Dimensions ...............................................15
4
*All illustrations in this manual are intended to explain procedures. Therefore, some illustrations
may appear different than your unit.
*All names of companies and products that appear in this manual are trademarks or registered
trademarks of the respective owners.
Yamaha Proaudio website:
http://www.yamahaproaudio.com/
Part Names and Functions
Front Panel
Part Names and Functions
3
4
5
96kHz
88.2kHz
48kHz
44.1kHz
WORD CLOCK
12
A
WORD CLOCK indicators
These indicators indicate the currently selected
wordclock source. If the unit is not locking to the
selected wordclock source, the corresponding
wordclock source indicator flashes.
B
[WORD CLOCK] button
This button enables you to select the wordclock source
from 44.1kHz, 48kHz, 88.2kHz, 96kHz, WORD
CLOCK IN, and DIGITAL OUT A (See page 7.)
C
+48V indicators
These indicators indicate the on/off status of the +48
phantom power of the corresponding channels.
6
7
+48V
HPF
dB
OFF ON
+48V
MASTER
8LKJ9
• Do not connect or disconnect a device while
phantom power is applied. Doing so can damage
the connected device and/or the unit itself.
•To protect your speaker system, leave the power
amps (powered speakers) turned off when
switching the phantom power on/off. We also
recommend that you set all output level faders to
the minimum position. Otherwise, high-volume
output may damage your hearing or equipment.
[HPF] button
H
This button turns the high pass filter of the selected
channels on or off (See page 8.) The button indicator
lights up when the high pass filter of the selected
channels is turned on.
D
HPF indicators
These indicators indicate the on/off status of the high
pass filter of the corresponding channels.
E
Level meters
These meters indicate the corresponding channel
output level in six steps.
F
Channel Select buttons
These buttons enable you to select channels to edit.
G
[+48V] button
This button turns the +48 phantom power of the
selected channels on or off (See page 7.) The button
indicator lights up when the +48V phantom power of
the selected channels is turned on.
• If you don’t need phantom power, be sure to turn
this button off.
CAUTION
• Before you turn phantom power on, make sure
that no devices other than phantom-powered
devices, such as a condenser microphone, are
connected. Otherwise, you risk damaging the
devices.
Gain display
I
This 3-digit, 7-segment display indicates the gain of
the currently selected channel.
Gain control
J
This control sets the gain of the selected channel.
NOTE:
The PAD will be switched on or off internally when the gain
is adjusted between -14 dB and -13 dB. Keep in mind that
noise may be generated if there is a difference between
the Hot and Cold output impedance of the external device
connected to the INPUT connector when using phantom
power.
K
[+48V MASTER] switch
This switch turns the +48V phantom master power on
or off.
L
[POWER] switch
This switch turns the power to the AD8HR on or off.
The gain and high pass filter settings are stored even
after you turn off the power to the unit.
5
Part Names and Functions
12 5
34
678 9
NOTE:
To avoid loud noise from the speakers, turn on the power
first to the connected devices that are closest to the sound
source.
Example: Sound source → AD8HR → Mixer → Power
amplifier
To turn off the power to the system, reverse the order
described above.
Rear Panel
A
Grounding screw
For safety, use this screw to ground the AD8HR. The
included power cable has a three-pin plug. If the AC
outlet is grounded, the AD8HR will be grounded
correctly via the power cable. If the AC outlet does not
provide a suitable ground, this screw must be
connected to a suitable ground point. Grounding is
also an effective method for eliminating hum,
interference, and other noise.
B
[AC IN] connector
Connect the included power cable here. First, connect
the power cable to the AD8HR, then insert the power
cable plug into the AC outlet.
Be sure to use the included power cable.
Use of other cables may result in malfunction,
WARNING
[HA REMOTE] connector 1
C
This D-sub 9-pin connector is used to connect a
computer or Yamaha PM5D Digital Console or
DM2000 to control the AD8HR remotely. In a
multiple AD8HR system, connect an AD8HR to [HA
REMOTE] connector 1 on an additional AD8HR.
NOTE:
Please visit the following Yamaha website for the latest
information about the devices that can control the AD8HR
remotely.
http://www.yamahaproaudio.com/
heat generation, or fire.
D
[PC RS422] switch
If you connect a computer to [HA REMOTE]
connector 1, set this switch to PC. If you connect a
Yamaha PM5D or DM2000, or an additional AD8HR
in a multiple AD8HR system, to [HA REMOTE]
connector 1, set this switch to RS422.
E
[HA REMOTE] connector 2
In a multiple AD8HR system, connect one AD8HR to
this D-sub 9-pin connector on another AD8HR.
F
[DIGITAL OUT A/B] connector
These D-sub 25-pin connectors output AES/EBU
format digital audio. In Double Speed mode, each
connector outputs digital audio data routed from
Channels 1–8. In Double Channel mode, the
[DIGITAL OUT A] connector outputs digital audio
data routed from Channels 1–4, and the [DIGITAL
OUT B] connector outputs digital audio data routed
from Channels 5–8.
G
[WORD CLOCK OUT] connector
This BNC connector outputs a wordclock signal.
H
[WORD CLOCK IN] connector
This BNC connector inputs a wordclock signal. This
connector is terminated at 75 Ω .
I
INPUT 1–8 connectors
These balanced XLR-3-31-type connectors are used to
input analog signals to the corresponding channels.
6
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