O W N E R ’ S M A N U A L
RDI-8
8 CHANNEL DI BOX + LINE MIXER
WARNING
An equilateral triangle enclosing a lightening flash/arrowhead symbol is
intended to alert the user to the presence of uninsulated “dangerous
voltage” within the product’s enclosure which may be of sufficient
magnitude to constitute a risk of electric shock.
ATTENTION: RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR
An equilateral triangle enclosing an exclamation point is intended to alert
the user to the presence of important operating and service instructions in
the literature enclosed with this unit.
IMPORTANT SAFETY INSTRUCTIONS
When using this electronic device, basic precautions should always be taken, including the following:
1. Read all instructions before using the product.
2. Do not use this product near water (e.g., near a bathtub, washbowl, kitchen sink, in a wet basement, or near a swimming
pool, etc.).
3. This product should be used only with a cart or stand that will keep it level and stable and prevent wobbling.
4. This product, in combination with headphones or speakers, may be capable of producing sound levels that could cause
permanent hearing loss. Do not operate for a long period of time at a high volume level or at a level that is uncomfortable.
If you experience any hearing loss or ringing in the ears, you should consult an audiologist.
5. The product should be positioned so that proper ventilation is maintained.
6. The product should be located away from heat sources such as radiators, heat vents, or other devices
(including amplifiers) that produce heat.
7. The product should be connected to a power supply only of the type described in the operating instructions or as marked on the
product. Replace the fuse only with one of the specified type, size, and correct rating.
8. The power supply cord should: (1) be undamaged, (2) never share an outlet or extension cord with other devices so that the
outlet’s or extension cord’s power rating is exceeded, and (3) never be left plugged into the outlet when not being used for
a long period of time.
9. Care should be taken so that objects do not fall into, and liquids are not spilled through, the enclosure’s openings.
10. The product should be serviced by qualified service personnel if:
A.
B.
C.
D.
E.
The power supply cord or the plug has been damaged.
Objects have fallen into, or liquid has been spilled onto the product.
The product has been exposed to rain.
The product does not appear to operate normally or exhibits a marked change in performance.
The product has been dropped, or the enclosure damaged.
11. Do not attempt to service the product beyond what is described in the user maintenance instructions. All other servicing should
be referred to qualified service personnel.
3
INSTALLATION
To ensure years of enjoyment from your NADY AUDIO RDI-8, please read and understand this manual thoroughly before
using the unit.
INSPECTION
Your RDI-8 was carefully packed at the factory in packaging designed to protect the units in shipment. Before installing and using your
unit, carefully examine the packaging and all contents for any signs of physical damage that may have occurred in transit.
(Note: Nady Systems is not responsible for shipping damage. If the unit is damaged, do not return to us, but notify your dealer and the
shipping company immediately to make a claim. Such claims must be made by the consignee in a timely manner.)
CONTENTS:
• Instruction manual
• RDI-8 (verify that the unit’s serial number is same as shown on shipping carton)
• AC Power cord
• Warranty Card
RACK MOUNTING
The RDI-8 fits into one standard 19" rack unit of space (1 3/4"). Parts of the unit can become very warm during use. This is normal
during operation. Care should be taken to ensure that there is enough space around the unit for cooling (at least 12” or 30cm). Do not
place the RDI-8 on high temperature devices such as power amplifiers, etc., or the unit may overheat in operation. Also, do not place
the unit on speakers as this may cause them to move and/or fall due to speaker vibrations.
Although the unit’s chassis is shielded against radio frequency (RF) and electromagnetic interference (EMI), extremely high fields of RF
and EMI should be avoided.
POWER CONNECTION
The RDI-8 has an internal power supply and is designed to operate from an external AC source. Power requirements for electrical
equipment differ from area to area. Be sure to confirm that the voltage selected by the voltage selector switch on the back panel is
proper for your area (120VAC/60 Hz or 230VAC/50Hz) per the information below:
Europe (except UK): 230V, 50Hz
UK and Australia: 240V, 50Hz
USA and Canada: 120V, 60 Hz
For other areas, please check with local authorities.
When ready to operate, plug the AC cord into the power source. Make sure that the unit is turned off before connecting to the AC
power source to avoid possible loud transients which can damage your speakers or your ears, especially when monitoring with
headphones.
4
FRONT & REAR CONNECTIONS
(1) (2) (6) (10)
FRONT PANEL
REAR PANEL
(3) (4) (5) (7)
(11)
(12)
(9) (15)
(8)
(13) (14)
(13) STEREO MASTER OUTPUTS
FRONT PANEL
This pair of Left/Right unbalanced RCA jack outputs provides a
stereo output when the unit is used as a line mixer (see
APPLICATIONS, Using the RDI-8 as a line mixer, pg. 6). The
output level is controlled by the individual channel VOLUME
CONTROLS (3) and the MASTER VOLUME CONTROL (7). The
panning (L/R) is adjusted by the channel PAN CONTROLS (4).
(14) STEREO LINE OUTPUTS
This pair of Left/Right unbalanced RCA jack outputs provides a
second stereo output when the unit is used as a line mixer (see
APPLICATIONS, Using the RDI-8 as a line mixer, pg. 6)
The output level is controlled by the individual channel VOLUME
CONTROLS (3). The panning (L/R) is adjusted by the channel
PAN CONTROLS (4).
(1) AUDIO INPUTS
Eight 1/4” unbalanced audio input jacks (one per channel)
(2) PARALLEL LINK OUTPUTS
Eight 1/4” unbalanced line level jacks output connections for
parallel channel line distribution
REAR PANEL
(8) AUDIO OUTPUTS
Eight XLR balanced output connectors (one per channel)
(11) POWER CONNECTOR WITH FUSE HOLDER
This standard IEC power cord receptacle is used to connect the
AC power to your unit. It features a built-in fuse holder for a
5X20mm, 0.5A/250V slow-blow fuse. If the fuse continuously
blows, shut off the unit and have it serviced by qualified service
personnel.
CONTROLS & INDICATORS
FRONT PANEL
(10) POWER LED INDICATOR
This LED indicator illuminates when the unit is powered on by the
rear panel POWER SWITCH (9).
The RDI-8 has 8 independent direct injection unbalanced to
balanced line converters, in addition to a built-in 8-channel line
mixer. The unit provides 2 rotary controls (Volume & Pan) and 2
switches per channel (Ground lift & 20dB PAD).
(3) VOLUME CONTROLS
REAR PANEL
(9) POWER SWITCH
Use these independent rotary controls to set the level of each
channel signal level sent to the stereo MASTER (13) and LINE
(14) outputs. They do not affect the signal level to the channel
OUPTUTS (8)
To turn the unit ON or OFF, press the upper or lower portion of
this button as indicated. The front panel POWER LED
INDICATOR (10) will illuminate when the power is “ON”. Before
turning on this unit, verify connection to the proper voltage AC
source, check all connections and turn down the level controls of
equipment connected to the outputs.
(12) AC VOLTAGE SELECTOR SWITCH
Before plugging in the power cord, check to see that the unit is
set for the proper voltage for your area: ~115v (60Hz) or ~230V
(50Hz).
(4) PAN CONTROLS
Use these independent rotary controls to set the PAN (Left and
Right Imaging) of each channel signal sent to the stereo
MASTER (13) and LINE (14) outputs.
(5) GROUND LIFT SWITCHES
Use these switches to lift the ground in the input signal of the
channel being used (if needed to eliminate hum caused by that
input). These affect all the OUTPUTS (8,13,14)
(6) 20dB PAD SWITCHES
(Note: use at the improper voltage can damage your unit and
void the warranty.)
(15) GROUND
Use these switches to PAD each input channel signal level by
20dB. Use this only if you have an extremely high input signal
strength. These affect all the OUTPUTS (8,13,14)
Connect short wire to rack or other equipment to ground this unit
for safety.
5
APPLICATIONS
USING THE RDI-8 AS A DI BOX (DIRECT INJECTION UNIT)
Connect the signal you would like to convert from unbalanced to balanced to the RDI-8 via a 1/4” unbalanced plug to one of the chan-
nel LINE INPUTS (1) on the front panel of the unit. Connect an XLR balanced cable to the corresponding channel OUTPUT (8) on the
rear of the RDI-8 and connect to your chosen destination. If the input signal strength is too “hot” (high) you can depress the 20dB PAD
(6) switch to adjust to a more appropriate level. If there is a ground loop hum you can remove it by depressing the GROUND LIFT (5)
switch.
USING THE RDI-8 AS A LINE MIXER
You can mix volume & pan of all input signals simultaneously to both stereo pairs of RCA connections on the rear of the RDI-8: the
MASTER (13) and LINE (14) outputs. This enables use of the unit as a fully functional line mixer. This can be very handy for many ap-
plications, both live and in the studio. Just connect either or both the stereo MASTER (13) or LINE (14) outputs on the rear to your
chosen destination(s), such as a monitor amplifier, and adjust the individual VOLUME (3) and PAN (4) controls for each individual
channel on the front of the RDI-8 to suit your needs. A MASTER VOLUME (7) control is provided on the front panel, in addition to the
individual controls, and adjusts only the MASTER (13) output. Adjust as necessary.
USING THE RDI-8 PARALLEL CHANNEL LINE OUTPUT
A unbalanced parallel LINK OUTPUT (2) is provided on the front panel next to each LINE INPUT (1) jack. This is useful for routing a
direct link out, in addition to the balanced XLR OUTPUT (8) on the rear panel (for example, if you would like to monitor a specific input
locally while sending a XLR balanced direct output to another source without affecting the line mixer signal).
SPECIFICATIONS
FUNCTION CONTROLS
AUDIO INPUTS
Volume ......................................................... Per channel variable
Volume ......................................................... Per channel variable
Connectors .......................................................................1/4" jack
Type ........................................................................TRS balanced
Impedance .................................................................... 47k Ohms
Min Sensitivity ...................................................................... -20dB
Peak input level................................................................... +16dB
POWER SUPPLY
Power requirement............................ Selectable, ~ 100-120 VAC,
~ 200-240 VAC, 50-60 Hz
Power consumption ........................................................... 11.5VA
Fuse ....................................... 100-120 VAC: 630 mA (slow-blow)
200-240 VAC: 315 mA (slow-blow)
PARALLEL LINK OUTPUTS
Connectors .......................................................................1/4" jack
Type ...............................................................Unbalanced/parallel
100-240 VAC: 500 mA (slow-blow)
5X20mm glass type
STEREO LINE MIXER OUTPUTS
Power cord connector ............................ Standard IEC receptacle
with built-in fuse holder
Connectors ..................................................................RCA Phono
Impedance .................................................................... 600 Ohms
Max. output level............................... +2dB (peak level +18.5 dB)
PHYSICAL
Dimensions .................... 1.75"X 19"X 8.5" (44.5X482.6X217mm)
Weight ................................................................. 7.15lbs (3.25Kg)
XLR BALANCED OUTPUTS
Connectors ..................................................... XLR Type balanced
Min. output impedance.................................................. 600 Ohms
Max. output level................................... 0dB (peak level +18.5dB)
The specifications above are correct at the time of printing of this
manual. For improvement purposes, all specifications for this unit,
including design and appearance, are subject to change without
prior notice.
DISTORTION, FREQUENCY RESPONSE,
S/N RATIO & CROSSTALK
Frequency response .................................20Hz~20kHz, 0dB~-2B
Distortion ............................................................................. 0.02%
S/N Ratio............................................................ Better than 95dB
Crosstalk rejection ...............................>80dB@1kHz;-20dB input
6
NOTES
7
SERVICE FOR YOUR NADY AUDIO PRODUCT
(U.S.) Should your NADY AUDIO product require service, please contact the Nady Service Department via telephone
at (510) 652-2411, or e-mail at [email protected].
(International) For service, please contact the NADY AUDIO distributor in your country through the dealer from
whom you purchased this product.
DO NOT ATTEMPT TO SERVICE THIS UNIT
YOURSELF AS IT CAN BE DANGEROUS AND
WILL ALSO VOID THE WARRANTY.
NADY SYSTEMS, INC. • 6701 SHELLMOUND STREET, EMERYVILLE, CA 94608
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