Optional Add-on Devices
WRAT (Wide Range Amplifier Technology): This technology uses
low-negative-feedback circuit topology for accurate signal reproduction,
improved dynamic signal-to-noise ratio, and better delivery of power peaks.
H.C.P.S. (High Current Power Supply): The Onkyo TX-SR508 is
equipped with a H.C.P.S. massive high power transformer to keep your music
sounding great at low and high volume levels.
Digital-to-Analog Converters (DACs): This receiver is
equipped with 192kHz/24-bit Burr-Brown DACs to decode and playback
high-resolution recordings with less jitter and clearer sound.
32-Bit Processing DSP: The Onkyo TX-SR508 is equipped with a powerful
and highly accurate 32-bit processing DSP (Digital Signal Processor) for better
surround sound reproduction.
This receiver incorporates a wide variety of listening modes to bring you
maximum enjoyment from your audio and video software. You can assign a default
listening mode to each input source so that listening mode will be selected
automatically when you select the corresponding input source. The following
audio formats are supported by the receiver's Listening Mode - Mono, Stereo,
5.1-channel, 6.1ch, and 7.1-channel.
||Maximum Speaker Output
||In this mode,
audio from the input source is output without surround-sound
processing. This mode delivers pure sound with minimum
sound quality adjustment and filtration.
||Mono, Stereo, 5.1ch, or 7.1ch
||Sound is output by the front left and
right speakers and subwoofer.
||Use this mode when watching an old movie with a
||This mode is used with PCM multichannel sources
||5.1ch or 7.1ch
|Dolby Pro Logic II
|| Dolby Pro Logic II Movie, Dolby Pro Logic
II Music, Dolby Pro Logic II Game
|Dolby Pro Logic IIx
||Expands stereo sources for 7.1-channel playback
(Movie, Music, Game)
|Dolby Pro Logic IIz
||Expands stereo, 5.1-channel, and 7.1-channel
sources to 7.1-channels with Front-Height speakers.
||Stereo, 5.1ch, or 7.1ch
|Dolby Digital EX
|Dolby Digital Plus, Dolby TrueHD
||5.1ch or 7.1ch
||Stereo or 5.1ch
||DTS-ES Discrete, DTS-ES Matrix
||6.1ch or 7.1ch
|| DTS-HD High Resolution Audio, DTS-HD Master
|| 5.1ch or 7.1ch
||This mode is for use with DTS 96/24 sources. This
is high-resolution DTS with 96 kHz sampling rate and 24-bit
resolution, providing superior fidelity.
|DTS Neo: 6
||Neo: 6 Cinema or Neo: 6 Music
||This mode can be used with SACDs that feature multi-channel
Note: Dolby Digital
and DTS listening modes can only be selected if your audio source is
connected to the AV receiver via a digital audio connection (HDMI,
optical, or coaxial). To enjoy true 7.1ch Dolby Digital TrueHD
and DTS-HD surround sound, the receiver must be connected to
your Blu-ray player via HDMI.
Dolby Pro Logic IIx Music Settings: While listening in the
Dolby Pro Logic IIx Music format, there are three further enhancements you can
- Panorama: Broadens the front
stereo image to the surround speakers to provide a
wraparound effect, especially effective when there
is limited output from the surround channels, panorama
can be turned on/off in the menu.
- Dimension: Allows you to move
the sound field forward or backward.
- Center Width: Allows you to
adjust the width of the center channel.
PLIIz Height Gain: The Height Gain Control in Dolby Pro Logic IIz
enables you to select how much gain is applied to the front-height effect
speakers. There are three settings - Low, Mid, and High.
Center Image: In the DTS Neo:6 Music mode, the Center Image
feature adjusts the output of the left and right channels relative to the center
channel, allowing you to make the center channel more or less dominant as needed.
This improves the image of the center channel, especially when the listener is
off-center. Adjustment varies from 5 (nothing subtracted from the L/R channels)
to 0 (L/R channel output is cut in half).
Onkyo Original DSP Modes:
The OnkyouTX-SR508 features its own proprietary set of DSP (Digital Signal
Processing) modes to bring your movies and music more to life.
||Maximum Speaker Output
||For classical or operatic music.
||Mono, Stereo, 5.1ch, or 6.1ch
||For acoustic instruments, vocals, and
||Suitable for rock or pop.
||Adds realistic acoustics to TV shows.
||The receiver offers four different Gaming modes -
RPG, Action, Rock, and Sports.
|All Channel Stereo
||Stereo sound from all speakers.
||Mono, Stereo, 5.1ch, 6.1ch, or 7.1ch
||All speakers output the same sound in
||Theater-Dimensional circuitry takes the
complexity out of conventional surround-sound setups and lets you
experience the excitement of surround sound from as few as two
ordinary speakers. Theater-Dimensional's
unique multi-speaker modes let you place up to five speakers
conveniently by the TV, for the most realistic virtual-surround
Listening Angle: While listening in the Theater Dimensional mode you
can adjust the listening angle to either Wide (if listening angle is 40-degrees)
or Narrow (if listening angle is 20-degrees).
Audyssey 2EQ Automatic Speaker Setup: With the supplied
speaker setup microphone, Audyssey 2EQ can measure the number of speakers
connected, their sizes, crossover frequencies and distances front he listening
position and calculate the optimal speaker setting for you automatically. The
supplied microphone is approximately 2.0" in diameter, 0.9375" tall, and has a
19.5' cable that plugs into the front of the receiver. There is a threaded
insert on the bottom of the microphone so it can be mounted on a tripod for
accurate listening position placement. Three listening position measurements are
taken, one primary and two secondary, to optimize the surround effect for a
broad area. You can also setup your speaker system manually using the receiver.
- Speaker Size: You can set Large or
Small for your front speakers; Large, Small or None for
your surround, surround-back/front-height, and center speakers; and Yes or No for subwoofer.
- Speaker Distance: The front speaker distance can be set from 1
to 30 feet in 1-foot increments. The center and subwoofer
settings can be up to 5 feet more or 5 feet less than the
distance you set for the front speakers (30 feet max). The
settings for the surround and surround-back speakers are each
individually adjustable, and they may be adjusted up to 5 feet
more or 15 feet less than the distance you set for the
front speakers (30 feet max).
- Adjustable Crossover: This receiver has a built-in high-pass
crossover for any of the speakers set to Small. This setting is available when
the subwoofer is set to Yes. The frequencies that you can choose from are 40, 50,
60, 80, 100, 120, 150, and 200 Hz. Frequencies lower than the set crossover point
are output by the subwoofer.
- Speaker Levels: You can manually
adjust the level of individual speakers between -12dB
and +12dB; -15dB to +12dB for the subwoofer.
Audyssey Dynamic EQ: Audyssey Dynamic EQ solves the problem
of deteriorating sound quality as volume is decreased by taking into account
human perception and room acoustics. Dynamic EQ selects the best possible
frequency response and surround levels moment-by-moment as volume is changed.
The result is bass response, tonal balance and surround impression that remain
constant despite changes in volume. Audyssey Dynamic EQ combines information
from incoming source levels with actual output sound levels in the room, a
prerequisite for delivering a loudness correction solution. Audyssey Dynamic EQ
works in tandem with Audyssey 2EQ to provide well-balanced sound for every
listener at any volume level.
Audyssey Dynamic Volume: Audyssey Dynamic Volume solves the problem of
large variations in volume level between television programs, commercials, and
between the soft and loud passages of movies. Dynamic Volume looks at the
preferred volume setting by t he user and then monitors how the volume of
program material is being perceived by listeners in real time to decide whether
an adjustment is needed. Whenever necessary, Dynamic Volume makes the necessary
rapid or gradual adjustments to maintain the desired playback volume level while
optimizing the dynamic range. Audyssey Dynamic EQ is integrated in Dynamic
Volume so that as the playback volume is adjusted automatically, the perceived
bass response, tonal balance, surround impression, and dialog clarity remain the
same whether watching movies, flipping between television channels, or changing
from stereo to surround sound content.
Bass And Treble: You can independently adjust the Bass (50Hz)
and Treble (20kHz) of the TX-SR508 from -10 to +10 dB.
CinemaFilter: Using the CinemaFilter you soften overly bright movie
soundtracks. Movie soundtracks are typically mixed for a large theater (relative to your
home theater) with lots of soft seats and thick curtains on the walls. Home theater
settings often lack these high frequency absorbing wall treatments, making the soundtrack
sound too bright. CinemaFilter accounts for this and for many movies sounds more natural
Music Optimizer: The Music Optimizer function enhances the sound
quality of compressed music files. The Music Optimizer function only works with PCM
digital audio input signals with a sampling rate below 48kHz and analog input signals.
Late Night Feature: The Late Night feature limits the dynamic
range of Dolby Digital recordings. Limiting the dynamic range makes it easier to
find a volume that ensures the quiet sounds are not too quiet and the loud sounds
are not too loud for night time listening. This allows you to comfortably listen
to without the need to constantly adjust the volume to keep from waking family/neighbors.
The choices are: Off, Low, and High.
Note: This feature only works
with Dolby Digital Encoded software and the depth
of the feature will vary based on the individual
Audio Sync: Occasionally the audio and video signals are not
properly synchronized, typically when using a progressive scanning DVD player. You
can correct this by delaying the audio; options are 0 (no delay) to 100 milliseconds,
in 10 millisecond steps.
ARC (Audio Return Channel): This feature allows audio to be
sent from your compatible HDTV to your receiver through the same HDMI cable
already being used to send audio and video to your HDTV. This eliminates the
need for extra cables connected to your television.
Zone 2: In addition to the main listening room, you can also
enjoy audio playback from a different source in another room of your home using
the receiver's Zone 2 capabilities. Using the receiver's supplied remote
control, you can adjust the volume of Zone 2 independently from the main zone.
The receiver features Zone 2 speaker terminals as well as Zone 2 pre-outs.
- Line Out: By using the line-level outputs on the
TX-SR508 you can connect an external receiver or integrated amplifier in a
second room, allowing you to listen to 7.1 surround in the main room and
play a different audio source in another room of your home. The volume of
Zone 2 is controlled by your optional integrated amp.
- Speaker Out: By using the speaker-level outputs on the
TX-SR508 you can directly connect a secondary pair of speakers in another
room of your home, allowing you to listen to 5.1 surround sound in your main
room and play a different audio source in the other room. The volume of Zone
2 is controlled by the TX-SR508 receiver.
Note: By using the Zone 2 Line-Level output, you can use the
receiver's Zone 2 speaker terminal outputs to power a pair of Front-Height
speakers for Dolby Pro Logic IIz, while also having Surround-Back speakers
connected to the AV receiver in your home theater system.
Bi-Amping Front Speakers: The Front and
Surround-Back/Front-Height speaker terminal posts can be used independently to
power a pair of front speakers and a pair of surround-back or front-height
speakers. You can also use these speaker terminals together to provide separate
tweeter and woofer feeds for the front speaker (bi-amping), providing improved
bass and treble performance. When bi-amping the front speakers with the
Surround-Back/Front-Height speaker terminals, the AV receiver is able to drive
up to 5.1 speakers in the main room.
Assignable Digital Inputs: The Onkyo receiver is equipped with
two optical digital inputs and two coaxial digital inputs. All four digital inputs
are assignable. You can choose auto decoding , PCM, or DTS for the digital audio
inputs. Auto will decode the signal in its original form (Dolby Digital, DTS,
PCM, etc), PCM decodes the signal to 2-channel, while DTS decodes only DTS
Binding Post Speaker Outputs: There are color-coded binding
post connectors for the left front, right front, center, left surround, right
surround, left surround back, and right surround back speakers. The binding
posts are not 5-way because a plastic collar prevents their use with spade lugs.
There are spring terminals for the Zone 2/Front-Height speakers.
Front-Panel AUX Input: The AV receiver features a front-panel 3.5mm
auxiliary input for connecting a portable audio device such as your MP3 player.
Headphones: When headphones are plugged into the full-size
1/4" jack on the front panel, all the speakers are automatically muted.
AM/FM Tuner: With the built-in tuner you can enjoy AM and FM radio
station. You can store your favorite stations as presets for quick selection.
You can store a combination of up to 40 of your favorite FM/AM radio stations as
HDMI (v1.4): The TX-SR508 has four assignable HDMI v1.4
inputs and one HDMI v1.4 output for connecting DVD players, HDTV set-top boxes,
and other video components to your TV or projector. The receiver's HDMI
circuitry allows the receiver to output an HDMI audio signal from its speaker
outputs, headphone out, and HDMI out so you don't have to run and additional
analog or digital cable. The receiver uses HDCP (High-bandwidth Digital Content
Protection), so only HDCP-compatible components can display the picture. The
HDMI inputs can accept and switch 480i, 480p, 720p, 1080i, and 1080p video signals to
a HDTV. The HDMI inputs will support uncompressed standard or
high definition digital video along with the following audio signals: 2-channel
linear PCM, Multichannel linear PCM, and Bitstream. Each of the HDMI inputs can
be assigned to any of the four rear panel A/V inputs (BD/DVD, VCR/DVR, CBL/SAT,
3D-Compatible: The TX-SR508's HDMI v.1.4 connections will accept 3D
video from your 3D-ready Blu-ray player and output the video signal in 3D to
your 3D-ready HDTV.
x.v.Color: The AV receiver supports x.v.Color, offering a
wider color range than the current broadcast standard. For the x.v.Color feature
to be useful, the entire video production chain must be compatible
Deep Color: The Onkyo receiver also supports Deep Color
which allows the color depth of video signals passing through HDMI to be raised.
The number of colors that could be expressed by 1 pixel was 24 bits (16,777,216
colors) with a standard HDMI jack. However, the number of colors which can be
expressed by 1 pixel is 36 bits with a Deep Color enabled HDMI jack. Since the
gradation of the depth of a color can be expressed more finely with more bits,
continuous color changes can be more smoothly expressed. For the Deep Color
feature to be useful, the entire video production chain must be compatible
Note: x.v. Color and Deep Color technology are supported
only when source product, HDMI cable, media and HDTV all support those
Auto Lip Sync: The Lip Sync function can automatically
synchronize HDMI audio and video that has gotten out of sync due to the
complex digital video processing being performed by your HDMI-compatible TV.
With HDMI Lip Sync, the audio delay required to synchronize the audio and
video is calculated and applied automatically by the AV receiver.
Component Video: There are 2 component video inputs and 1 component video output. The
component video inputs and outputs have a bandwidth of 5Hz to 100MHz.
On-Screen Display (via HDMI):
The Onkyo AV receiver offers an on-screen setup menu through its HDMI output. If
your TV is connected to the composite video or component video monitor output,
you will need to use the AV receiver's front-panel display when changing
Sleep Timer: From the remote, you can set the unit to automatically
turn off after as much as 90 minutes or as little as 10 minutes; choices are presented in
10 minute increments.
Display Dimmer: The display brightness has three settings;
Dim, Dimmer, and Normal.
Multi-brand Remote: The supplied RC-764M wireless remote is
a multi-brand remote. The remote is pre-programmed to operate Onkyo components,
as well as other popular brands of equipment, including DVD players, satellite
receivers, cable boxes, VCRs, and televisions. The IR wireless remote control
will operate up to 16-feet away from the receiver at an angle of 30-degrees left
or right of the receiver as long as the remote is within the line of sight of
HDMI Control: This function allows CEC-compatible
components or RIHD-compatible components connected via HDMI to be controlled
with the TX-SR508. The AV receiver offers the following CEC HDMI controls.
- Power Control: This feature allows you to link the
power functions of CEC-compatible components or RIHD-compatible components
connected via HDMI.
- TV Control: This function enables you to control this
AV receiver from an RIHD-compatible TV connected via HDMI.
RI Remote Control Jack: The 1/8" RI remote control jack
allows you to connect this receiver to other compatible Onkyo components.
Optional Add-on Devices
iPod/iPhone Compatible: With the Onkyo UP-A1 series
Dock (580UPA1, sold separately), you can play music, photo, and video stored on select
Apple iPods/iPhones through the AV receiver. The UP-A1 offers charging capability and remote operability via your A/V receiver's remote controller. The
UP-A1 connects to the receiver's proprietary "Universal" port.
Note: The TX-SR508 will only display iPod video from the
receiver composite monitor output (480i only). It also supports Onkyo's RI-compatible
DS-A3 iPod dock
(580DSA3, sold separately).
HD Radio Ready: The Onkyo UP-HT1 HD Radio Module (580UPHT1,
sold separately) sends high-quality digital AM/FM audio via a single proprietary
cable to the Onkyo receiver's Universal Port. The same convenient cable also
powers the tuner unit, saving on cable clutter. The tuner features 40 random
presets for FM and AM stations. A rear-side Universal Port input gives you the
option of "daisy chaining" a second compatible device, such as the UP-A1 Onkyo
Dock for the iPod.
Sirius Satellite Radio Ready: The TX-SR508 can be connected
to the optional SiriusConnect Home Tuner kit (607SCH1,
sold separately) or SiriusConnect Home Tuner Receiver (220SCH2P,
sold separately), which allows you to receive Sirius Satellite Radio through the
receiver. You can search Sirius radio stations by Channel, Category or Direct
Tuning. You can also choose to display the following Sirius information on the
receiver's display - Channel Name, Channel Number, Category Name, Artist Name or
Song Title. You can store a combination of 40 of your favorite Sirius, AM, and
FM radio stations.