ONKYO tx-nr646 User Manual

Others

Rated Output Power (North American)

 

With 8 ohm loads, both channels driven, from 20-20,000 Hz; rated 100 

watts per channel minimum RMS power, with no more than 0.08% total 

harmonic distortion from 250 milliwatts to rated output.

 

Surround Mode Output Power ()

 

(6 ohms, 1 kHz THD 0.9%) 170 W per channel 

¼



Reference output for each speakers.

 

Depending on the source and the listening mode settings,

 

there may be no sound output.

Rated Output Power (Others)

 

7 ch × 160 W at 6 ohms, 1 kHz, 1 ch driven of 1% (IEC)

Maximum Effective Output Power

 

7 ch × 175 W at 6 ohms, 1 kHz, 1 ch driven (JEITA) (Asian)

Dynamic Power ()

¼



IEC60268-Short-term maximum output power

 

240 W (3 Ω, Front)

 

210 W (4 Ω, Front)

 

120 W (8 Ω, Front)

THD+N (Total Harmonic Distortion+Noise)

 

0.08% (20 Hz - 20 kHz, half power)

Input Sensitivity and Impedance

 

200 mV/47 kΩ (LINE, 1 kHz 100 W/8 Ω)

 

3.5 mV/47 kΩ (PHONO MM)

Rated RCA Output Level and Impedance

 

100 mV/2.3 kΩ (ZONE2 LINE OUT)

 1 V/470 Ω (SUBWOOFER PRE OUT)

Phono Overload 

 

70 mV (MM 1 kHz 0.5% Direct)

Frequency Response 

 

10 Hz - 100 kHz/+1 dB, –3 dB (Direct mode)

Tone Control Characteristics

 

±10 dB, 20 Hz (BASS) 

 

±10 dB, 20 kHz (TREBLE)

Signal to Noise Ratio 

 

100 dB (LINE, IHF-A)

 

80 dB (PHONO MM, IHF-A)

Speaker Impedance 

 

6 Ω - 16 Ω (North American and Taiwanese)

 

4 Ω - 16 Ω/6 Ω - 16 Ω (Others)

Signal level

 

1.0 Vp-p/75 Ω (Component Y)

 

0.7 Vp-p/75 Ω (Component Pb/Cb, Pr/Cr)

 

1.0 Vp-p/75 Ω (Composite)

Maximum resolution supported by component video

 480i/576i

FM Tuning Frequency Range

 

87.5 MHz - 107.9 MHz 

(North American and Taiwanese)

 

87.5 MHz - 108.0 MHz, RDS (Others)

AM Tuning Frequency Range

 

522/530 kHz - 1611/1710 kHz

Preset Channel 

 40

Ethernet LAN 

 10BASE-T/100BASE-TX

Wireless LAN

 

IEEE 802.11 b/g/n standard

 (Wi-Fi

®

 standard)

 

2.4 GHz band: 

 

  1 - 11 ch (North American)

 

  10 - 11 ch (Spain)

 

  10 - 13 ch (France)

 

  1 - 13 ch (Others)

   (Wi-Fi

®

 standard)

Communication system 

Bluetooth Specification version 2.1 +EDR (Enhanced Data Rate)

Maximum communication range 

Line of sight approx. 15 m ()

Frequency band  

2.4 GHz band

Modulation method  

FHSS (Freq Hopping Spread Spectrum)

Compatible Bluetooth profiles 

A2DP 1.2 (Advanced Audio Distribution Profile) 

AVRCP 1.3 (Audio Video Remote Control Profile)

Supported Codecs  

SBC

Transmission range (A2DP) 

20 Hz - 20,000 Hz (Sampling frequency 44.1 kHz)

¼



The actual range will vary depending on factors such as obstacles between 

devices, magnetic fields around a microwave oven, static electricity, 

cordless phone, reception sensitivity, antenna’s performance, operating 

system, software application, etc.

Power Supply 

 

AC 120 V, 60 Hz (North American and Taiwanese)

 

AC 220 - 240 V, 50/60 Hz (Others)

Power Consumption 

 

6.4 A (North American and Taiwanese)

 

630 W (Others)

 

0.1 W (Stand-by, North American and Taiwanese)

 

0.15 W (Stand-by, Others)

 

2.6 W (Network Standby)

 

70 W (No-sound)

Dimensions (W × H × D)

 

435 mm × 173.5 mm × 329 mm

 

17-1/8" × 6-13/16" × 12-15/16"

Weight 

 

9.4 kg (20.7 lbs.) (North American and Taiwanese)

 

9.8 kg (21.6 lbs.) (Others)

 

●

Input 

 

IN1 (BD/DVD, HDCP2.2), IN2 (CBL/SAT, HDCP2.2), IN3 (STRM BOX, 

HDCP2.2), IN4 (PC), IN5 (GAME), IN6, IN7, AUX INPUT HDMI (front)

Output 

 

OUT MAIN (ARC), OUT SUB

Video Resolution 

 

4K 60 Hz (RGB/YCbCr4:4:4/YCbCr4:2:2, 24 bit)

Audio Format 

 

Dolby Atmos, Dolby TrueHD, Dolby Digital Plus, Dolby Digital, DTS:X, 

DTS-HD Master Audio, DTS-HD High Resolution Audio, DTS 96/24, DTS-

ES, DTS, DTS Express, DSD, Multichannel PCM (up to 8ch)

Supported 

 

3D, Audio Return Channel, Deep Color, x.v.Color™, LipSync, CEC,  

4K, Extended Colorimetry (sYCC601, Adobe RGB, Adobe YCC601), 

Content Type, 3D Dual View, 21:9 Aspect Ratio Video Format

 

●

Component 

 

IN1 (BD/DVD), IN2 (GAME)

Composite 

 

IN1 (CBL/SAT), IN2 (STRM BOX), IN3 (PC)

 

●

Digital 

 

OPTICAL 1 (CD), 2 (TV) 

COAXIAL (BD/DVD)

Analog 

 

BD/DVD, CBL/SAT, STRM BOX, PC, GAME, TV, CD, PHONO

 

●

Analog

 

ZONE2 LINE OUT

 

2 SUBWOOFER PRE OUT

Speaker Outputs 

 

FRONT L/R, CENTER, SURROUND L/R, BACK or HEIGHT L/R, ZONE2 

L/R

Phones

 

PHONES (Front, ø 6.3)

 

●

Setup Mic 

1 (Front)

RI REMOTE CONTROL  1

USB  

1 (1.1, 5 V/1 A)

Ethernet 1

Supports multi-language on-screen display

 

(North American) English, German, French, Spanish, Italian, Dutch, 

Swedish

 

(Taiwanese) English, German, French, Spanish, Italian, Dutch, Swedish, 

Chinese ()

 

(Others) English, German, French, Spanish, Italian, Dutch, Swedish, 

Russian, Chinese ()

¼



OSD is not displayed when the input selector is "NET" or 

"BLUETOOTH". Use the display on the main unit when operating the 

unit.

Specifications and features are subject to change without notice.