NAD Radio C426 User Manual

®
C 426  
FM/AM Tuner  
Owner’s Manual  
 
IMPORTANT SAFETY INSTRUCTIONS  
23.Battery Disposal - When disposing of used batteries, please comply  
with governmental regulations or environmental public instruction’s  
rules that apply in your country or area.  
24.Safety Check - Upon completion of any service or repairs to this  
product, ask the service technician to perform safety checks to  
determine that the product is in proper operating condition.  
25.Wall or Ceiling Mounting - The product should be mounted to a wall  
or ceiling only as recommended by the manufacturer.  
INFORMATION ABOUT COLLECTION AND DISPOSAL OF  
WASTE BATTERIES (DIRECTIVE 2006/66/EC OF THE EUROPEAN  
PARLIAMENT AND THE COUNCIL OF EUROPEAN UNION) (FOR  
EUROPEAN CUSTOMERS ONLY)  
Batteries bearing any of these symbols indicate  
that they should be treated asseparate collection”  
and not as municipal waste. It is encouraged that  
necessary measures are implemented to maximize  
the separate collection of waste batteries and  
to minimize the disposal of batteries as mixed  
municipal waste.  
WARNING  
The lightning flash with arrowhead symbol, within an  
equilateral triangle, is intended to alert the user to the presence  
of uninsulateddangerous voltagewithin the product’s  
enclosure that may be of sufficient magnitude to constitute a  
risk of electric shock to persons  
End-users are exhorted not to dispose waste  
batteries as unsorted municipal waste. In order  
to achieve a high level of recycling waste batteries, discard waste batteries  
separately and properly through an accessible collection point in your  
vicinity. For more information about collection and recycling of waste  
batteries, please contact your local municipality, your waste disposal service  
or the point of sale where you purchased the items.  
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 appliance.  
By ensuring compliance and conformance to proper disposal of waste  
batteries, potential hazardous effects on human health is prevented and  
the negative impact of batteries and waste batteries on the environment  
is minimized, thus contributing to the protection, preservation and quality  
improvement of the environment.  
RECORD YOUR MODEL NUMBER (NOW, WHILE YOU CAN SEE IT)  
The model and serial number of your new C 426 are located on the back of  
the cabinet. For your future convenience, we suggest that you record these  
numbers here:  
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,  
DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE AND  
OBJECTS FILLED WITH LIQUIDS, SUCH AS VASES, SHOULD NOT BE  
PLACED ON THIS APPARATUS.  
Model number : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Serial number : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
THE EQUIPMENT MUST BE CONNECTED TO AN EARTHED MAINS SOCKET-  
OUTLET.  
This product is manufactured to comply with the radio  
interference requirements of EEC DIRECTIVE 2004/108/EC.  
NOTES ON ENVIRONMENTAL PROTECTION  
At the end of its useful life, this product must not be disposed  
of with regular household waste but must be returned to a  
collection point for the recycling of electrical and electronic  
equipment. The symbol on the product, user’s manual and  
packaging point this out.  
The materials can be reused in accordance with their markings. Through  
re-use, recycling of raw materials, or other forms of recycling of old  
products, you are making an important contribution to the protection of  
our environment.  
Your local administrative office can advise you of the responsible waste  
disposal point.  
NAD is a trademark of NAD Electronics International, a division of Lenbrook Industries Limited  
Copyright 2010, NAD Electronics International, a division of Lenbrook Industries Limited  
3
 
INTRODUCTION  
TABLE OF CONTENTS  
IMPORTANT SAFETY INSTRUCTIONS                                                  2  
THANK YOU FOR CHOOSING NAD.  
The C 426 Tuner is a technologically advanced and highly capable product  
— yet we have invested great effort in making it simple and easy to use.  
We have been careful to ensure that the C 426 is as musically transparent  
and spatially accurate as possible, incorporating much of what we’ve  
learned from a quarter century’s experience designing audio, video and  
home-theater components. As with all our products, NAD’sMusic First”  
design philosophy guided the C 426’s design, such that it can confidently  
promise you both state-of-the-art and audiophile-quality music listening  
for years to come.  
INTRODUCTION  
GETTING STARTED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5  
WHAT’S IN THE BOX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5  
CHOOSING A LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5  
QUICK START . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5  
IDENTIFICATION OF CONTROLS  
FRONT PANEL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6  
REAR PANEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
TNR 1 REMOTE CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9  
SLEEP MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9  
DIMMER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9  
We encourage you to take a few minutes now to read right through this  
manual. Investing a little time here at the outset might save you a good  
deal of time later, and is by far the best way to ensure that you make the  
most of your investment in the C 426, and get the most from this powerful  
and flexible audio component.  
OPERATION  
LISTENING TO AM/FM RADIO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10  
ABOUT ANTENNAS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
SELECTING A TUNER BAND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
TUNING STATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
STORING PRESETS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
ABOUT USER NAMES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
ABOUT RDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
One more thing: We urge you to register your C 426 ownership on the NAD  
Worldwide Web site:  
REFERENCE  
For warranty information contact your local distributor.  
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12  
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13  
4
 
INTRODUCTION  
GETTING STARTED  
WHAT’S IN THE BOX  
Packed with your C 426 you will find  
QUICK START  
In case you simply cannot wait to experience the performance of your  
new C 426, we provide the followingQuick Startinstructions to get you  
underway.  
·
·
·
·
·
·
An AM loop antenna.  
A FM ribbon-wire antenna with balun.  
A detachable AC power cord.  
An audio cable connector (RCA-to-RCA lead).  
The TNR 1 remote control with 2 (two) AAA batteries.  
This owner’s manual version in CD-ROM.  
Please make all the connections to your C 426 with the unit unplugged. It is  
also advisable to power down or unplug all associated components while  
making or breaking any signal or AC power connections.  
1
Use the RCA-to-RCA lead to connect the left and right output of the  
C 426 to the tuner input of your amplifier.  
SAVE THE PACKAGING  
Please save the box and all of the packaging in which your C 426 arrived.  
Should you move or otherwise need to transport your C 426, this is by far  
the safest container in which to do so. We’ve seen too many otherwise  
perfect components damaged in transit for lack of a proper shipping  
carton, so please: Save that box!  
2
3
Connect AM and FM antenna.  
Connect the supplied AC cord to the C 426 AC mains input and then  
plug into an AC outlet. The Standby LED indicator embedded around  
the bezel of the STANDBY button will illuminate amber.  
Plug the AC mains plug also of your amplifier into the AC outlet. Power  
up your amplifier and set it to the tuner input where the C 426 is  
connected.  
Press the front panel STANDBY button to turn ON the C 426. The  
Standby LED indicator will turn from amber to blue and illuminate the  
VFD.  
Toggle front panel’s [FM/AM] button to select AM or FM band.  
Toggle front panel’s [PRESET/TUNE] button to switch betweenPreset”  
andTunemode. Select TUNE mode (“TUNEscrolls through the VFD).  
Rotate the [PRESET/TUNE] control knob to select desired station.  
4
5
CHOOSING A LOCATION  
Choose a location that is well ventilated (with at least several inches to both  
sides and behind), and that will provide a clear line of sight, within 23 feet/7  
meters, between the C 426’s front panel and your primary listening/viewing  
position—this will ensure reliable infrared remote control communications.  
Avoid placing the unit in direct sunlight or near sources of heat and damp.  
It is perfectly possible to stack the C 426 on top of other components.  
6
7
8
5
 
IDENTIFICATION OF CONTROLS  
FRONT PANEL  
1
2
3
4
5
6
7
8
9
10  
11  
1
2
STANDBY LED: This indicator will light up amber when the C 426  
is in standby state. When the C 426 is at ON state, this indicator will  
illuminate blue. This indicator will extinguish itself when the power  
cable is unplugged from the AC supply.  
7
MEMORY: Press this button to store tuned AM or FM stations to the  
C 426’s 40 preset-memory locations. One can store a mix of any AM or  
FM stations to the 40 available presets.  
In combination with [DISPLAY] button, [MEMORY] button is also used in  
STANDBY BUTTON: Press this button to turn ON the C 426. The  
Standby LED indicator will turn from amber to blue and illuminate the  
VFD. Pressing the STANDBY button again turns the unit back to standby  
mode.  
8
9
PRESET/TUNE: Toggle [PRESET/TUNE] button to switch between  
“PresetandTunemode. Select TUNE mode (“TUNEscrolls through the  
VFD) or PRESET mode (“PRESETscrolls through the VFD).  
3
4
FM/AM: Toggle [FM/AM] button to select AM or FM band.  
FM MUTE/MODE: The front panel [FM MUTE/MODE] button is a dual-  
purpose control. In the normal position, “FM STandFM MUTEicons on  
the VFD are lit; only the stations with a strong signal can be listened to,  
and the noise between stations is muted.  
REMOTE SENSOR: Point the TNR 1 remote control at the remote  
sensor and press the buttons. Do not expose the remote sensor of the  
C 426 to a strong light source such as direct sunlight or illumination.  
If you do so, you may not be able to operate C 426 with the remote  
control.  
Pressing the [FM MUTE/MODE] button again (“FM STandFM MUTE”  
icons on the VFD are extinguished) allows distant and potentially noisy  
stations to be received. Noise is reduced if the FM station signal level  
is less than the FM Stereo threshold (since mono FM is inherently less  
noise prone) though at the sacrifice of the stereo effect.  
Distance: About 23 ft (7 m) from the front of the remote sensor  
Angle: About 30° in each direction of the front of the remote sensor  
10 VACUUM FLUORESCENT DISPLAY (VFD): Provide visual information  
on the settings, conditions, status and other information relevant to the  
currently tuned station.  
TheFM MUTEstatus can be stored for individual presets.  
5
6
BLEND: The NAD BLEND feature will allow you to reduce the amount of  
noise and hiss but still retain some level of stereo separation, instead of  
mono. The [BLEND] button toggles between engaging and disengaging  
the BLEND feature. When engaged, “BLENDis illuminated in the VFD;  
“BLENDis extinguished when not engaged.  
TheBLENDstatus can be stored for individual presets.  
DISPLAY: Use this multifunction button to toggle between RDS PS,  
RDS RT and station frequency in FM tuner mode. Refer also to the item  
In combination with [MEMORY] button, [DISPLAY] button is also used in  
6
 
IDENTIFICATION OF CONTROLS  
FRONT PANEL  
11 PRESET/TUNE CONTROL KNOB: The function of this control knob  
depends upon the selected tuning mode via the PRESET/TUNE button.  
Toggle [PRESET/TUNE] button to switch betweenPresetandTune”  
mode.  
a. Preset mode: Rotate the PRESET/TUNE control to the left to scroll  
to a lower Preset number; rotate the PRESET/TUNE control to the  
right to scroll to a higher Preset number. This is awrap-around”  
function – upon reaching the last stored Preset number, preset  
search will continue on with the first stored Preset number and vice-  
versa. Unused preset numbers are skipped over.  
b. Tune mode: Rotate the PRESET/TUNE control in either direction  
for more than 1 second to engage automatic tuning. The tuner will  
stop at the next sufficiently strong signal it encounters. Note that  
this functionwrapsthat is, it will continue to search from one end  
of the AM or FM band to the other until it stops at a strong signal.  
Rotate the PRESET/TUNE control again for more than 1 second to  
start searching again.  
By briefly rotating the PRESET/TUNE control in either direction, manual  
tuning is engaged for precise tuning to a specific frequency. With each  
brief rotation, the tuner will take 0.05 MHz steps at FM band and 10  
kHz (120V version) or 9 kHz (230V version) at AM band. When tuned  
accurately to a station, “TUNEDwill be illuminated in the VFD. The  
antenna bars displayed below the ANTENNA icon in the VFD reflects the  
signal strength of the tuned station.  
Automatic tuning is available on both AM and FM band.  
7
 
IDENTIFICATION OF CONTROLS  
REAR PANEL  
1
2
3
4
5
6
7
ATTENTION!  
Please make sure that the C 426 is powered off or unplugged before making any connections. It is also advisable to power down or unplug all associated  
components while making or breaking any signal or AC power connections.  
1
2
FM ANTENNA TERMINAL: Connect the supplied wiredipoleFM  
antenna to the FM antenna terminal using the suppliedbalunadapter.  
It will usually work best when mounted on a vertical surface such as a  
wall, with arms fully outstretched forming a horizontal“T”perpendicular  
to the origin point of the signal.  
7
AC MAINS INPUT: The C 426 comes supplied with a separate AC Mains  
cable. Before connecting the cable to a live wall socket, ensure that it  
is firmly connected to the C 426’s AC Mains input socket first. Connect  
only to the prescribed AC outlet, i.e., 120V 60 Hz (for 120V version  
models of C 426 only) or 230V 50 Hz (for 230V version models of C 426  
only). Always disconnect the AC Mains cable plug from the live wall  
socket first, before disconnecting the cable from the C 426’s Mains input  
socket.  
AM ANTENNA TERMINAL: Connect the supplied AM loop antenna to  
these terminals. If an external AM antenna is used, make connections  
to the AM and GND terminals in accordance with the instructions  
If you intend not to use the C 426 for long periods of time, disconnect  
the AC mains cable plug from the live AC wall socket.  
WARNING  
If the male plug of the mono cable (with or without +12V DC) is  
3
4
OUTPUT (L, R): Connect to the corresponding analog audio input of  
an amplifier, receiver or stereo system.  
connected to C 426’s +12V TRIGGER IN, the Standby button in the front  
panel as well as the corresponding ON/OFF function keys in the remote  
control will be disabled. Unplug the mono cable to maintain normal  
power ON/OFF function procedures.  
RS-232: Connect this interface using RS-232 serial cable (not supplied)  
to any Windows® compatible PC to allow remote control of the C 426  
via compatible external controllers. NAD is a certified partner of AMX  
and Crestron and fully supports these external devices. Check out the  
NAD website for information about AMX and Crestron compatibility  
with NAD. See your NAD audio specialist for more information.  
5
6
IR IN: This input is connected to the output of an IR (infrared) repeater  
(Xantech or similar) or the IR output of another component to allow  
control of the C 426 from a remote location. Most NAD products with IR  
OUT are fully compatible with the C 426.  
+12V TRIGGER IN: This input allows the C 426 to be switched remotely  
to standby mode and ON by ancillary equipment, such as an amplifier,  
preamp, AV processor, etc. The controlling device must be equipped  
with a 12V trigger output to use this feature. Connect this +12V trigger  
input to the remote component’s corresponding +12V DC output jack  
using a mono cable with 3.5mm male plug.  
8
 
IDENTIFICATION OF CONTROLS  
TNR 1 REMOTE CONTROL  
1
2
3
4
5
6
7
8
9
ON: Power up C 426 from standby mode.  
OFF: Switch C 426 to standby mode.  
1
3
2
0-9 number buttons: Direct-entry of frequency channel or preset number.  
DISP: Show RDS PS, RDS PT, Preset name or station frequency as applicable.  
SLEEP: Set sleep mode timer.  
DISP  
5
8
4
PRESET: Step up or down between stored radio presets.  
TUNE: Tune forward or backwards.  
6
7
BLEND  
9
11  
FM/AM: Select AM or FM band.  
10  
BLEND: Activate or deactivate BLEND feature.  
10 FM MUTE: Activate or deactivate FM MUTE FM STEREO mode.  
11 DIMMER: Reduce, turn off or restore VFD brightness.  
SLEEP MODE  
The Sleep Mode timer will switch the C 426 to standby mode automatically after a preset number of  
minutes. Toggle TNR 1’s [SLEEP] key to select through the following Sleep mode timer settings – SLEEP  
30, SLEEP 60, SLEEP 90 and OFF. Stop at the desired Sleep mode timer setting. A correspondingSLEEP”  
icon will be illuminated in the VFD.  
While at SLEEP time mode, pressing the TNR 1’s [SLEEP] button once will display the remaining minutes  
(i.e. “SLEEP _ _”;_ _is the number of minutes remaining) before the C 426 goes to standby mode.  
To cancel the sleep mode, continue pressing the TNR 1’s [SLEEP] button untilOFFdisplays on the VFD.  
Switching the C 426 to standby from either the TNR 1’s [OFF] button or the front panel Standby button  
will also cancel the sleep mode.  
DIMMER  
The VFD brightness can be adjusted in three ways. Toggle the [DIMMER] button to reduce, turn off or  
restore VFD brightness.  
9
 
OPERATION  
LISTENING TO AM/FM RADIO  
The C 426 offers very high quality sound from radio broadcasts. The  
reception and sound quality will always be dependent to a degree however  
on the type of antenna(s) used as well as proximity to the broadcast origin,  
geography and weather conditions.  
DIRECT TUNING  
If you know your desired station’s frequency allocation, you can tune  
directly to the station.  
1
Toggle front panel’s [PRESET/TUNE] button to switch betweenPreset”  
andTunemode. Select TUNE mode (“TUNEscrolls through the VFD).  
Using the numeric keys of the remote control, key-in the frequency  
allocation of the station. For example, to enter 104.50MHz, press1, 0,  
“4, 5and0or press1, 0, 4and5.  
ABOUT ANTENNAS  
2
The supplied ribbon-wire FM antenna can be connected to the rear panel  
FM-antenna input using the includedbalunadapter and should be fully  
extended to form a“T. This folded-dipole antenna will usually work best  
when oriented vertically, with the arms of its“T”fully outstretched and  
arranged perpendicular to the origin of the desired broadcast. There are  
noruleshowever, and experimenting freely with antenna placement and  
orientation may yield the clearest sound and lowest background noise.  
STORING PRESETS  
The C 426 can store a mix of your 40 favorite AM and FM stations for  
immediate recall.  
1
2
To store a Preset, tune first to the desired frequency and then press the  
front panel [MEMORY] button.  
In areas of poor FM reception, an exterior FM antenna can improve  
performance dramatically. If radio listening is important to you, consider  
consulting an antenna installation professional to optimize your system.  
“MEMORYand the next available Preset number will continually flash  
on the VFD (If all 40 preset numbers are allocated already, you can  
overwrite an existing Preset number. Rotate the PRESET/TUNE control  
knob to select the Preset number you want to overwrite).  
Press the [MEMORY] button again to store the desired frequency on the  
Preset number shown (“STOREDscrolls through the VFD). Your desired  
frequency is now stored in the assigned preset.  
The supplied AMloopantenna will usually provide adequate reception.  
However, an exterior AM antenna can be used to improve reception.  
Consult an antenna professional for more information.  
3
ASSEMBLING THE LOOP ANTENNA  
DIRECT RECALL OF A PRESET  
1
2
3
Rotate the outer frame of the antenna.  
Insert the bottom edge of the outer frame into the groove on the stand.  
Extend the antenna cord.  
You can directly recall a desired Preset number.  
1
Toggle front panel’s [PRESET/TUNE] button to switch betweenPreset”  
andTunemode. Select PRESET mode (“PRESETscrolls through the  
VFD).  
2
Using the numeric keys of the remote control, key-in directly your  
desired Preset number.  
DELETE A PRESET  
1
2
Select the Preset number to be deleted.  
Press and hold both the front panel [MEMORY] and [DISPLAY] buttons  
untilDELETEis shown flashing in the VFD. Immediately release both  
buttons and then press [DISPLAY] button again (“DELETEDscrolls  
through the VFD). Current Preset number is now deleted.  
SELECTING A TUNER BAND  
Toggle front panel’s [FM/AM] button to select either AM or FM band. Using  
the TNR 1, select desired band by directly pressing [AM] or [FM] button.  
ABOUT USER NAMES  
A particular Preset number can be assigned an eight-characterUser Name.  
This applies only to stored AM stations and non-RDS FM stations. The  
assignedUser Namewill be shown in the VFD whenever the associated  
Preset number is recalled.  
TUNING STATIONS  
Toggle front panel’s [PRESET/TUNE] button to switch betweenPresetand  
Tunemode. Select TUNE mode (“TUNEscrolls through the VFD) or PRESET  
mode (“PRESETscrolls through the VFD).  
1
Rotate the PRESET/TUNE control in either direction for more than 1  
second to engage automatic tuning. The tuner will stop at the next  
sufficiently strong signal it encounters. Note that this functionwraps”  
– that is, it will continue to search from one end of the AM or FM band  
to the other until it stops at a strong signal. Rotate the PRESET/TUNE  
control again for more than 1 second to start searching again.  
By briefly rotating the PRESET/TUNE control in either direction, manual  
tuning is engaged for precise tuning to a specific frequency. With each  
brief rotation, the tuner will take 0.05 MHz steps at FM band and 10  
kHz (120V version) or 9 kHz (230V version) at AM band. When tuned  
accurately to a station, “TUNEDwill be illuminated in the VFD. The  
antenna bars displayed below the ANTENNA icon in the VFD reflects the  
signal strength of the tuned station.  
ENTERING USER NAMES  
To assign a Preset number with the user nameNEWS, follow the procedure  
as below.  
1
2
Recall the desired Preset number.  
Press and hold [DISPLAY] button until the display shows a flashing  
cursor point.  
2
3
4
Rotate the [PRESET/TUNE] control knob to select the first character of  
the name (“Nfrom the alphabetical list).  
Press [DISPLAY] button to select the character and correspondingly  
move forward to the next position. Repeat this process for each  
character in sequence.  
5
Press the [MEMORY] button to store the User Name (“STOREDscrolls  
through the VFD). The current Preset number is now assigned the user  
nameNEWS.  
Automatic tuning is available on both AM and FM band.  
10  
 
   
OPERATION  
LISTENING TO AM/FM RADIO  
ABOUT RDS  
The Radio Data System (RDS) permits sending small amounts of digital  
information using conventional FM radio broadcasts. The C 426 supports  
two RDS modes, program-service name (PS mode) and radio-text (RT  
mode). Not every FM station incorporates RDS in its broadcast signal. In  
most areas you will find from one to several RDS-enabled stations, but it is  
by no means impossible that your favorite stations will not be broadcasting  
RDS data.  
VIEW RDS TEXT  
When an RDS-enabled FM broadcast is tuned, the station’s program-service  
name (PS) will be shown in the VFD (i.e., “ROCK 101”) and aRDSsymbol will  
also be illuminated.  
Press the [DISPLAY] key to toggle the readout between this and the station’s  
radio-text (RT) readout, if any, which might scroll song or artist name, or any  
other text of the station’s choosing.  
11  
 
 
REFERENCE  
TROUBLESHOOTING  
CONDITION  
POSSIBLE CAUSES  
POSSIBLE SOLUTIONS  
No power.  
• The power cord is disconnected.  
• Plug the power cord into the wall outlet  
securely.  
No sound.  
• Power AC lead unplugged or power not  
switched ON.  
• Check AC lead is plugged in and power  
switched on.  
• Signal leads incorrectly connected.  
• Check connections to amplifier.  
• Re-tune or deactivate FM MUTE.  
• Station not selected or weak signal with FM  
MUTE  
Noisy reception, hiss.  
• Weak signal.  
• Check station tuning. Adjust or replace  
antenna.  
Reception with whistling, buzzing noise.  
No RDS information.  
• Interference from other computers, games  
consoles.  
• Check station tuning. Switch off or move the  
source of electrical noise.  
• Station signal too weak.  
• Check station tuning. Adjust or replace  
antenna.  
• Station not transmitting RDS data.  
• Tune to an RDS station that supports program-  
service name (PS mode) and radio-text (RT  
mode).  
C 426 does not respond to remote control  
commands.  
• Batteries are flat or incorrectly inserted.  
• Check batteries.  
• Infrared receiver (IR) window of the C 426 or IR  
transmitter of the remote control is obstructed.  
• Check IR windows and ensure clear line-of-  
sight from remote control to C 426.  
• C 426 front panel is in very bright sunlight or  
ambient light.  
• Reduce sunlight/room lighting.  
RESTORING C 426 TO ITS FACTORY DEFAULT SETTINGS  
1
2
3
Press and hold both the front panel [MEMORY] and [PRESET/TUNE] buttons until all VFD icons are illuminated.  
Immediately press any front panel button; the C 426 will go to standby mode.  
Press the STANDBY button to power up C 426 from standby mode; the C 426 is restored to its factory default settings with all Presets cleared/erased.  
12  
 
REFERENCE  
SPECIFICATIONS  
FM SECTION  
Usable Sensitivity (98 MHz)  
Signal/Noise Ratio  
15 dBμ  
72 dB (60 dBμ IHF-WTD Mono)  
66 dB (60 dBμ IHF-WTD Stereo)  
Frequency Response  
Channel Separation (60 dBμ) - 30 Hz  
1 kHz  
1.0 dB (20 Hz - 15 kHz, 60 dBμ)  
33 dB  
42 dB  
10 kHz  
32 dB  
Capture Ratio (40 dBμ)  
AM Suppression  
3 dB  
65 dB (60 dBμ, 100% Mod. FM, 30% Mod. AM)  
Image Rejection (119.4 MHz)  
I.F. Rejection (10.7 MHz)  
Pilot Suppression (60 dBμ)  
Total Harmonic Distortion* - Mono  
Stereo  
85 dB  
78 dB  
60 dB  
0.25%  
0.35%  
24 dBμ  
15 dBμ  
26 dBμ  
Auto Search Sensitivity - On  
Off  
RDS Decode Sensitivity  
AM SECTION  
Usable Sensitivity (999/1000 kHz)  
Signal/Noise Ratio (5 mV in)  
Total Harmonic Distortion (5 mV in)  
IF Rejection (450 kHz)  
30 dBμ  
38 dB  
3%  
36 dB  
28 dB  
17 dB  
66 dB  
66 dB  
66 dB  
6 dB  
Image Rejection (F+2xIF)  
Selectivity  
Loop Sensitivity (20dB S/N) - 999 /1000 kHz  
603/600 kHz  
1404/1400 kHz  
Frequency response (100 - 2.3 kHz, 5 mV)  
GENERAL SPECIFICATIONS  
Standby power  
Unit Dimension (W x H x D)  
Net weight  
<0.5W  
435 x 87 x 312 mm (Gross)**  
4.2 kg  
5.3 kg  
Shipping weight  
* 60 dBμ, L=R 75 kHz for 120V version; 40 kHz Dev for 230V version  
** Gross dimensions include feet, [PRESET/TUNE] control knob and rear panel terminals.  
information about C 426.  
13  
 
www NADelectronics com  
2010 NAD ELECTRONICS INTERNATIONAL  
A DIVISION OF LENBROOK INDUSTRIES LIMITED  
All rights reserved. NAD and the NAD logo are trademarks of NAD Electronics International, a division of Lenbrook Industries Limited.  
No part of this publication may be reproduced, stored or transmitted in any form without the written permission of NAD Electronics International.  
C 426 Manual Issue 1.6-05/10  
 

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