TX-SR674

TX-SR674
TX-SR674
7.1-CHANNEL HOME THEATRE RECEIVER
Available in Silver or Black
Remote Control
Shifting Home Theatre Performance and Control into Another Gear
To move to a level beyond purely functional home theatre, the TX-SR674 gives you everything you need for audibly powerful, visually expressive
home entertainment. The first consideration should be the essentials—like rock-steady amplifier power and performance through Wide Range
Amplifier Technology (WRAT) and the cleanest audio signals generated by Vector Linear Shaping Circuitry (VLSC). And with HDTV in mind, the
TX-SR674 also offers High-Definition Multimedia Interface (HDMI) and connectivity with the latest high-definition disc formats. Capping it off
with Audyssey 2EQ™ room acoustics correction technology, the TX-SR674 stands out as one of the more complete A/V receivers in its class.
Wide Range Amplifier Technology (WRAT) and Vector Linear Shaping
Circuitry (VLSC) for All Channels
Without a time-tested amplifier design and precise digital-to-analog conversion
process, the most advanced processing features cannot deliver a higher standard
of audio from the latest high-definition DVD and audio CD formats, DVDs, PCM
CDs and digital music files. WRAT provides three key objectives: 1) A fuller sound
at higher frequencies; 2) The control of individual circuit noise and distortion-free
ground potential; 3) The ability to handle speaker reflex energy and impedance
fluctuations for movie theatre dynamics. The TX-SR674 also includes VLSC in
all its channels to mitigate the effect of magnified signal noise during the digitalto-analog conversion process. With VLSC, data is converted between sampling
points and then joined with analog vectors in real-time to produce a smooth
output wave form. The end result is a noiseless, smooth analog output signal
based on the digital source. VLSC is also effective in enhancing quality when
playing back compressed digital audio files.
HDMI and Component Video Upconversion for HDTV Connectivity
As the most advanced interface for transporting both uncompressed highdefinition (HD) video and uncompressed multi-channel audio in all HD formats
including 720p, 1080i and 1080p, HDMI has become the most desirable
connectivity option for home entertainment. This is superbly demonstrated with
the TX-SR674. Its two HDMI (version 1.1) inputs will receive pristine video from
HDMI-enabled components like DVD players or set-top boxes for a single-cable
output to a display device with an HDMI or DVI connection. If that’s not enough,
it’ll also upconvert any other source connected by component, S-Video or
composite connections. In effect, you have the power to accommodate all your
entertainment needs, from digital recording to spectacular gaming. And if your
HDTV doesn’t have HDMI capability, or you have yet to take the plunge, you can
use the HD-quality component video connections (also with upconversion) to get
the best video images available.
Access to the Most Advanced Surround Formats Available
The TX-SR674 has the onboard codecs—Dolby Digital EX, Dolby Pro Logic IIx,
DTS-ES, DTS 96/24 and DTS Neo:6—to effectively reproduce stereo and
multichannel sources in enveloping 6.1 or 7.1 surround sound. And with the
upcoming release of HD-DVD and Blu-ray Disc, Dolby Digital and DTS have
prepared audio formats that represent the future of digital audio entertainment.
By connecting an HD-DVD or Blu-ray Disc player with 5.1- or 7.1-line level outputs
to the TX-SR674’s 7.1-multichannel inputs, you will be able to enjoy the full
potential of audio formats like Dolby Digital Plus, Dolby True HD and DTS-HD.
Audyssey 2EQ to Counteract Room Acoustic Problems
Even though loudspeakers are designed to deliver sound without distortion or
coloration, the acoustic problems presented by a room’s profile will determine
the overall sound presentation. Walls, furniture and other objects reflect and
absorb sound creating distortion that is unique to your own space. To counter
this, Audyssey 2EQ detects speaker polarity & distance, and then sets levels,
delays, and crossovers and measures room acoustics at two listening positions.
In this way, a wider listening area is covered than by simply measuring at one
position as with many systems. Some systems try to correct for multiple positions
and then average the results out for a solution. However, this simply smooths
out the frequency response peaks and dips. Audyssey 2EQ corrects problems
in both frequency response and time domain (where most of the problems lie) in
the entire listening area. The results are immediately obvious—a clear, precise
and natural sound.
Multiroom Playback Capabilities through Powered Zone 2 with
12 V Trigger
Don’t think of the TX-SR674 as simply a single home theater control base. With
Powered Zone 2, you can easily enjoy different A/V sources throughout your
home. You can enjoy one input source in the main room by using either
a receiver or amplifier in Zone 2 or using only a pair of speakers in Zone 2.
If you decide to use an amplifier in Zone 2, the TX-SR674’s 12 V trigger will
send a signal to automatically switch it on. If you decide to only use speakers,
the TX-SR674 has high-quality banana plug-compatible speaker posts to
maintain the quality of your connection. Powered Zone 2 will also work effectively
with peripheral devices like the RI Dock for the iPod—perfect for sharing the
iPod’s huge storage of audio files.
Independent Crossover Adjustment and A/V Sync Function
Crossover control determines the frequency at which the subwoofer takes over
bass-reproducing responsibilities from the main speakers. The TX-SR674 lets
you independently set the crossover frequencies for front, centre, surround and
surround back speakers to effectively match your subwoofer. You can choose
from a wide range of frequencies—40/50/60/80/100/120/150/200 Hz—
giving you greater capacity to mix and match your speakers. Also, when
using progressive scan on your DVD player, audio and video often fall out of
synchronization. The TX-SR674 lets you delay the audio signal by up to 100
milliseconds in 10-millisecond steps to counter this.
TX-SR674
7.1-CHANNEL HOME THEATRE RECEIVER
Amplifier Features
• 185 watts per channel minimum into
6 ohms, 1 kHz, JEITA (1 channel driven);
95 watts per channel minimum into
8 ohms, 20 Hz-20 kHz, 0.08 %, FTC
(2 channels driven);
115 watts per channel minimum into
6 ohms, 1 kHz, 0.1 %, FTC
(2 channels driven);
• Wide Range Amplifier Technology (WRAT)
• Vector Linear Shaping Circuitry (VLSC)
for all channels
• Optimum Gain Volume Circuitry
• H.C.P.S.—high current power supply
• Discrete power amplifier circuitry
for all channels
• High-current, low-impedance drive
• Aluminum heatsink
• Auto-protection circuitry
Audio/Video Processing and
Connectivity Features
• DTS, DTS 96/24, DTS-ES Discrete/Matrix,
DTS Neo:6 decoding
• Dolby Digital, Dolby Digital EX, Dolby Pro
Logic IIx decoding
• 192 kHz/24-bit DACs for all channels
• Advanced 32-bit processing DSP chip
• HDMI upconversion
• 2 HDMI inputs and 1 output
• Component video upconversion with
Time Base Corrector (TBC)
• Composite to S-Video upconversion
• HDTV-capable (50 MHz) component
video switching
• 3 component video inputs and 1 output
• 6 digital inputs (4 optical [1 front
panel]/2 coaxial) and 1 optical output
• 5 S-Video inputs and 3 outputs
• 5 composite video inputs and 3 outputs
• 5 A/V inputs and 2 outputs
• 2 audio inputs and 1 output
• Front panel audio, video, S-Video,
optical inputs
• Pure audio mode
• Color-coded 7.1-multichannel inputs
(Ready for new DTS and Dolby Digital
formats for high-definition discs)
• Powered Zone 2/Zone 2 lineout with
12 V trigger
• IR input
• A-form listening mode memory
• CinemaFILTER
• Double Bass function
• Digital upsampling
• Non-scaling configuration
• Tone control (bass/treble) for front
L/R channels
• Zone 2 volume control
• Late night mode (high/low/off)
• Speaker level adjustment
• Direct mode
• Subwoofer pre out
• Color-coded dual banana plug-compatible
speaker posts (including Zone 2)
FM/AM Tuner and Other
Performance Features
• 40 FM/AM random presets
• Auto/manual tuning modes
• Intellivolume
• Audyssey 2EQ to correct room
acoustic problems
• Display dimmer (3 modes)
• On-screen display
• Headphone jack (standard)
• Audio mute (via remote)
• Sleep timer (via remote)
• Battery-free memory backup
• Heavy-duty power cord
• Large, non-resonant feet
• Heavy-gauge, anti-resonant, reinforced
steel chassis
• Vibration-resistant cover
• Aluminum front panel
• Independent crossover adjustment for
F/C/S/SB (40/50/60/80/100/120/
150/200 Hz)
• Compatible with RI (Remote Interactive)
Dock for the iPod
• A/V synchronization function (up to
100 ms [10-ms steps])
• Preprogrammed RI (Remote Interactive)
remote control with mode-key LEDs
SPECIFICATIONS
AMPLIFIER SECTION
Power Output
Front L/R.................. 185 W + 185 W (6 Ω, 1 kHz, 1 channel driven, JEITA)
95 W + 95 W (8 Ω, 20Hz-20 kHz, 0.08 %, 2 channels driven, FTC)
115 W + 115 W (6 Ω, 1 kHz, 0.1 %, 2 channels driven, FTC)
Centre ...................... 185 W (6 Ω, 1 kHz, 1 channel driven, JEITA)
95 W (8 Ω, 20Hz-20 kHz, 0.08 %, 2 channels driven, FTC)
115 W (6 Ω, 1 kHz, 0.1 %, 2 channels driven, FTC)
Surround L/R ........... 185 W + 185 W (6 Ω, 1 kHz, 1 channel driven, JEITA)
95 W + 95 W (8 Ω, 20Hz-20 kHz, 0.08 %, 2 channels driven, FTC)
115 W + 115 W (6 Ω, 1 kHz, 0.1 %, 2 channels driven, FTC)
Surround Back L/R .. 185 W + 185 W (6 Ω, 1 kHz, 1 channel driven, JEITA)
95 W + 95 W (8 Ω, 20Hz-20 kHz, 0.08 %, 2 channels driven, FTC)
115 W + 115 W (6 Ω, 1 kHz, 0.1 %, 2 channels driven, FTC)
Dynamic Power ................................... 225 W + 225 W (3 Ω, Front)
170 W + 170 W (4 Ω, Front)
105 W + 105 W (8 Ω, Front)
THD (Total Harmonic Distortion) ..... 0.08 % (Rated Power)
Damping Factor .................................. 60 (Front, 1 kHz, 8 Ω)
Input Sensitivity and Impedance
Line.................................................... 200 mV/47 kΩ
Output Level and Impedance
Rec out .............................................. 200 mV/470 Ω
Frequency Response ......................... 10 Hz-100 kHz/+ 1 dB, - 3 dB (Direct mode)
Tone Control ........................................ ± 10 dB, 50 Hz (BASS)
± 10 dB, 20 kHz (TREBLE)
Signal-to-Noise Ratio ........................ 106 dB (Line in, IHF-A)
Speaker Impedance ........................... 4 Ω/6 Ω-16 Ω
VIDEO SECTION
Input Sensitivity/Output Level and Impedance
Video ................................................. 1 Vp-p/75 Ω (Component and S-Video Y)
0.7 Vp-p/75 Ω (Component PB/CB, PR/CR)
0.28 Vp-p/75 Ω (S-Video C)
1 Vp-p/75 Ω (Composite)
Component Video Frequency Response .. 5 Hz-50 MHz
TUNER SECTION
[FM]
Tuning Frequency Range .................. 87.5 MHz-108 MHz
Usable Sensitivity
Stereo ................................................ 22.2 dBf (75 Ω, IHF)
Mono ................................................. 15.2 dBf (75 Ω, IHF)
Stereo ................................................ 67 dB (IHF-A)
Mono ................................................. 73 dB (IHF-A)
Total Harmonic Distortion
Stereo ................................................ 0.5 %, 1 kHz
Mono ................................................. 0.3 %, 1 kHz
Stereo Separation .............................. 40 dB at 1 kHz
[AM]
Tuning Frequency Range .................. 522 kHz-1,611 kHz/530 kHz-1,710 kHz
Usable Sensitivity .............................. 300 µV/m
Signal-to-Noise Ratio ........................ 40 dB
Total Harmonic Distortion ................. 0.7 %
GENERAL
Power Supply ...................................... AC 230 V, 50 Hz
Power Consumption ........................... 630 W
Standby Power Consumption ........... 0.5 W
Dimensions (W x H x D).................... 435 x 174 x 377 mm
Weight .................................................. 11.4 kg
Black model
Due to a policy of continuous product improvement, Onkyo reserves the right to change specifications and appearance without notice. Dolby, Pro Logic, Surround EX and the double-D symbol are trademarks of Dolby Laboratories. DTS, DTS-ES Extended
Surround, DTS 96/24 and Neo:6 are trademarks of Digital Theater Systems, Inc. Manufactured under license from Audyssey Laboratories. U.S. and foreign patents pending. 2EQ is a trademark of Audyssey Laboratories. HDMI, the HDMI logo and
High-Definition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing LLC. iPod is a trademark of Apple Computer, Inc., registered in the U.S. and other countries. VLSC and CinemaFILTER are trademarks of Onkyo Corporation.
All other trademarks and registered trademarks are the property of their respective holders.
Onkyo Corporation 2-1 Nisshin-cho, Neyagawa-shi, OSAKA 572-8540, JAPAN Tel: +81-72-831-8136 Fax: +81-72-833-5222 http://www.onkyo.com/
Australia: Sole Distributor, Amber Technology Ltd. Unit B, 5 Skyline Place, Frenchs Forest, NSW, 2086, Sydney, AUSTRALIA, Tel: +61-2-9452-8600 Fax: +61-2-9452-8600
http://www.ambertech.com.au e-mail: consumer@ambertech.com.au
NPR No. 06N41 06/06 Printed in Japan
Signal-to-Noise Ratio
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