NAD C 725BEE User manual
C725BEE Stereo Receiver
• 50Wx2ContinuousPowerinto8ohms
• 102W,148W,205W,IHFDynamic
powerinto8,4and2ohms,respectively
• PowerDriveTM
• AM/FMTunerwith40stationpresets
• RDSdataserviceforFM
• ControlsandPlaysDAB(BandIIIandBandL)
withOptionalDB1Module
(230VVersionOnly)
• MultisourceZone2withindependentline
leveloutput
• SpeakerAandBswitching
• SR8SystemRemotecontrol
• ZR5ZoneRemote
• FrontPanelMPInputforattaching
portableMP3Players
• Dataportforusewithoptional
NADdockforiPod
• Headphonessocket
• RelayInputSwitching
• ToroidalPowertransformer
• 7Lineinputs
• AlldiscretecircuitryutilizingClassA
gainmodules
• Shortsignalpathfrominputtooutput
• AllsocketsGoldplated
• Tonecontrolsdefeatswitch
• Main-ampinput&pre-ampoutput
• SubwooferOutput
• SoftClippingTM
• IRIn&Out
• 12volttriggeroutput
• RS-232serialinterfaceconnectsto
advancedcontrolandautomationsystems
• <1wattStandbyConsumption
> POSITIONING
The NAD C 725BEE is in a category of one; unique in both performance and capability. Most receivers available today are digital surround sound
AV Receivers. While these are appropriate for Home Theatre use, with very few exceptions they cannot match the performance of a good stereo
amp when driving stereo speakers. The C 725BEE, by contrast, is an analogue design based entirely on our award winning C 325BEE Integrated
Amplifier. By combining all the most desirable features in a one box solution, we can offer the performance of separate high end components and
the convenience of a receiver. All this performance and convenience comes at a far more affordable price than separate components would cost.
> DETAILS
Performance
This is a true BEE (Bjorn Erik Edvardsen) design
with all his latest developments including:
PowerDrive, Distortion Canceling Circuit, BEE
Clamp and an all new and more highly refined
circuit layout. Based on a high current toroidal
transformer – the same type found on our own
high end Masters Series – the C 725BEE can
provide a healthy, ultra low distortion 50 watts
of continuous power.
But more importantly, on a short term dynamic
basis (which is the way music reproduction
demands the power to be delivered) the
C 725BEE can provide as much as 200 watts
depending on the characteristics of the
loudspeaker being driven. If, for any reason,
more power is asked for than the C 725BEE
can provide the exclusive Soft Clipping circuit
prevents the harsh grating sound of hard
clipping distortion.
> FEATURES
continued>
This ultra low noise and distortion fountain of
power, gives music an effortless unforced quality.
The smallest details in your recordings now emerge.
The timbre of each instrument and rhythm of the
entire ensemble is now clearly revealed. This all
adds up to a level of refinement that makes your
music come to life!
Imagine a big 3 dimensional sound stage with each
instrument clearly defined in its own space. It is
now so easy to hear all the details in your music
that ‘listener fatigue’ is a thing of the past.
The highly sensitive FM tuner offers audio
performance that is as good or better than any FM
broadcast ensuring the best possible sound quality
for FM stations. RDS is also supported giving text
information about the station and songs being played
depending on the data sent by the FM station. AM is
also supported with the best possible quality from
this older but still popular broadcast technology.
All input switching is accomplished using sealed
reed relays. While these cost more than the usual
CMOS type switch used by lesser receivers, the very
low resistance of the relay keeps noise at the lowest
possible levels. Precision audio grade capacitors
are used in all critical circuit locations adding both
performance and reliability.
Features
In addition to the seven high level inputs on the
rear panel there is a front panel mini-jack for
quick and easy hook up of a portable music player.
Additional convenience features include an IR remote
commander, connections for a second set of speakers,
and a highly informative 2 line vacuum fluorescent
display. Audiophile features like multi-way speaker
binding posts and gold plated input sockets all
add to the performance and reliability of this fine
instrument. There is even an output for adding a
powered subwoofer!
For those areas that support DAB broadcasts, the
C 725BEE is equipped with a special socket on the
rear panel that accepts NAD’s optional DB 1 DAB
module which adds DAB reception. Just plug it in
and the C 725BEE operating software recognizes the
DB 1 module and makes a seamless integration.
Custom Installation
There is a line level Zone 2 output with
independent source selection allowing you to
add an amplifier in another location and listen
to all your sources connected to the C 725BEE.
A separate remote commander is included to control
the C 725BEE from the remote location using
independent IR codes. The IR input and output
sockets on the rear panel make it easy to attach any
of the many IR repeaters on the market today. The
C 725BEE also sports an RS-232 port and is certified
compatible with Crestron, AMX and Savant system
controllers. The inclusion of 12V trigger output gives
additional flexibility and compatibility for custom
installations.
Green Features
NAD has responded quickly and responsibly to the
new awareness of environmental damage caused by
humanactivity. TheC725BEEismanufacturedwithout
the heavy metals that have been identified as harmful
to the environment and manufacturing processes
meet the latest stringent international standards.
Power consumption during standby mode is less than
1 watt and PowerDrive technology improves amplifier
efficiency during playback.
Value
As mentioned at the outset there is no other product
on the market today that offers the combination of
performance, convenience and flexibility provided
by the C 725BEE. To amass a separate component
system that matches the overall performance of the
C 725BEE would cost considerably more and would
still lack the convenience of an all-in-one receiver.
> DETAILS
C 725BEE Stereo Receiver
> REAR LINE DRAWING
LINE LEVEL OUTPUTS
FM BAND
Tuning Range 87.5MHz - 108.5MHz
(50kHz steps)
Usable Sensitivity (98 MHz) 12dBµ
Signal/Noise Ratio
(60dBµ IHF-WTD Mono) 65dB
(60dBµ IHF-WTD Stereo) 60dB
Frequency Response ±1.5dB (20Hz - 15kHz, 60dBµ)
Channel Separation
(60dBµ) 30Hz 30dB
1kHz 35dB
10kHz 30dB
Capture Ratio (40dBµ) 3dB
AM Suppression 50dB (60dBµ, 100% Mod. FM, 30% Mod. AM)
Image Rejection (119.4MHz) 70dB
I.F. Rejection (10.7MHz) 70dB
Pilot Suppression (60dBµ) 60dB
Total Harmonic Distortion Mono 0.5%
Stereo 0.8%
Auto Search 15 - 25dBµ
RDS Decode Sensitivity ≤30dBµ
AM SECTION
Tuning Range 530kHz - 1710kHz (10kHz steps, 120V version)
531kHz- 1602kHz (9kHz steps, 230V version)
Usable Sensitivity 50dBµ (999/1000 kHz)
S/N Ratio 45dB (5mV in)
Total Harmonic Distortion 3% (5mV in)
IF Rejection (450 kHz) 40dB
Image Rejection (F+2xIF) 28dB
Selectivity 20dB
Frequency response ±6dB (100 - 2.3kHz, 5mV)
PHYSICAL SPECIFICATIONS
Dimensions (W x H x D) Net 435 x 133 x 350mm
17 1/8”x 5 1/4” x 13 3/4”
Gross* 435 x 149 x 396mm
17 1/8”x 5 3/4” x 15 5/8”
Net Weight 20.72 lbs (9.4 kg)
Shipping Weight 24.25 lbs (11 kg)
PREAMPLIFIER SECTION
LINE LEVEL INPUTS (MP, CD, DISC, AUX, TAPE)
Input impedance (R and C) 22kΩ + 100pF
Input sensitivity 250mV (ref. rated power)
Maximum input signal 6V
Signal / Noise ratio A-weighted 95dB
Signal / Noise ratio pre-amp out,
A-weighted 107dB
Frequency response <±0.3dB (20Hz - 20kHz,
Tone defeat ON)
<±0.3dB (20Hz - 20kHz,
Tone defeat OFF)
THD + Noise, SMPTE IM < 0.01% at 5V out
LINE LEVEL OUTPUTS
Output impedance
Pre-out 80Ω
Record Out Z+ 1kΩ
Maximum output level
Pre-out 11V
Record Out 11V
TONE CONTROLS
Treble ±5dB at 10kHz
Bass ±8dB at 100Hz
TRIGGER OUT
Output resistance 75Ω
Output current 150mA
Output voltage 12 ±1V
POWER AMPLIFER SECTION
Continuous output power into 8Ω 2x50W (17dBW)
Rated distortion
(THD 20Hz - 20kHz) 0.02%
Clipping power 61W
(maximum continuous power
per channel 4Ω and 8Ω)
IHF Dynamic headroom 8Ω +3.1dB
4Ω +4.7dB
IHF dynamic power 8Ω 102W(20.0dBW)
(maximum short term 4Ω 148W (21.7dBW)
power per channel) 2Ω 205W (23.1dBW)
Damping factor
(ref. 8Ω, 1kHz) >110
Input impedance (R & C) 20kΩ + 1nF
Input sensitivity
(rated output into 8Ω) 730mV
Voltage gain 28.7dB
Frequency response 20Hz - 20kHz ±0.2dB
Signal/noise ratio, A-weighted 102dB
THD + Noise <0.02%
SMPTE IM4 <0.02%
IHF IM5 <0.01%
Headphone output impedance 220Ω
> SPECIFICATIONS
C 725BEE Stereo Receiver
NAD Electronics International reserves the right to change specications or features without notice.
NAD is a registered trademark of NAD Electronics International. All rights reserved. No part of this
publication may be reproduced, stored, or transmitted in any form whatsoever without the written
permission of NAD Electronics International. © 02/09 NAD Electronics International.
www.NADelectronics.com
* Gross dimensions include volume knob / speaker terminals / connectors / feet. Note: Installers
should allow a minimum clearance of 2- 4 inches for wire/cable management.
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