postpro manual rebuild2

Operating Manual

Penteo® PostPro™ Stereo-to-Surround Audio Processor

Initial Software ReleaseJune, 2010

BNC connectors on two-foot 75 ohm coaxial cabling, optional

connectors on six-foot shielded twisted pair PostPro-A 25-pin male D-sub to male and female XLR

PostPro-D six-foot D-sub to XLR cables set, optional

Model Description

box.

Power Requirements 100-240V, 50-60Hz, 2.5A

Cables:

cabling plus 15-pin high-density male D-sub to (1) male and (1) female XLR on six-foot shielded twisted pair cabling and (4) female

CAUTION: TO REDUCE THE RISK OF ELECTRICAL SHOCK, DO NOT REMOVE COVER (OR BACK).NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK,DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.

Penteo PostPro Stand-alone audio processor in a desktop

Please read this Manual

You are advised to review this Manual, especially the installation section, before unpacking the unit.

Re-Packing the unit

If you need to repack the unit for shipping:

1. Wrap the unit in its original plastic bag to avoid abrading the paint.

2. Seal the inner and outer cartons with tape.

If you are returning the unit permanently (for credit), be sure to enclose any audio and power cables necessary for the unit.

You may be charged for any missing items.

If you are returning a unit for repair, do not enclose any of the above items.

Problems?

If you have problems with installation or operation:

1. Check everything you have done so far against the instructions in this Manual.

2. Check the website at http://www.penteosurround.com

3. Call Penteo Customer Service for advice during California business hours at (510) 655-5583.

Penteo is a registered trademark. Penteo acknowledges any incidental trademarks referenced in this document are

property of their respective owners.

PenteoSurround IncorporatedPO Box 11295

Piedmont, CA 94611(510) 655-5583

www.penteosurround.com

© 2010

This unit was assembled in California.

About Penteo Processing

Penteo® is designed to be the ideal drop-in solution for optimallyconverting stereo audio media of all kinds – music, motionpicture, and broadcast – into the most entertaining 5.1 surroundexperience possible.

Penteo operates by performing a real-time digital forensic analysisof the stereo mix, detecting and enumerating the left-to-rightstereo positioning relationships of all the sounds as they weredistributed, left to right..

The relationships are directly translated into their equivalentlocations in a 5.1 surround soundfield.

Penteo adds no effects of its own.

Resulting stereo downmixes have absolutely no artifacts.

Penteo downmixes to back to stereo,just as stereo downmixes back to mono.

Penteo PostPro™ Desktop Operating' Manual Page 1

About the platform

The Penteo processor has been built using a miniaturized fullcomputer system motherboard and microprocessors.

The Penteo processor is an embedded appliance, with a formfactor that is completely re-configurable through downloadablesoftware; a completely reusable hardware platform which can beupgraded by a simple download.

Because the unit is built on a conventional motherboard platform,there are the usual PS2-type keyboard and mouse inputs, anRS232 serial port, a VGA output, and several USB2 connectors.While you are free to connect a VGA monitor, there is little to see,with two text windows communicating with each other. Theembedded software is hardware encrypted, and will not functionif downloaded.


Processing Latency

Because Penteo continuously analyzes the left-vs.-right channelrelationships, Penteo must store a small snippet of soundmomentarily to evaluate the waveform characteristics beforefeeding out the sliced channels.

Accordingly, there is a nominal processing delay of 214milliseconds.

(No, this can't be eliminated by faster processors!)

For live television use, a video delay of 7 NTSC or 6 PAL framesmust be employed in the video path to retain lip-sync.

For post-production workstation use, simply delete 214milliseconds of silence from the head of the processed audio torestore lip-sync.


Unit Installation

Installation consists of:

• unpacking and inspecting your Penteo processor.

• locating an appropriate desktop space.

• connecting inputs, outputs and power.

1. Unpack and inspect.If you note obvious physical damage on receipt, contact thecarrier immediately to make a damage claim.

Packed with the Penteo processor are a North American powercord and one of the following cable sets, if ordered:

PostPro-D (digital out):1 Six-foot HD-DB26 to XLR cable set, optional.

PostPro A (analog out):

• DB25 to male and female XLR connectors on sixfoot shielded twisted pair cabling

• DB15 to digital audio and sync connectors.

If you should ever have to ship the Penteo processor (e.g., for servicing), itis best to ship it in the original carton with its packing materials becauseboth the carton and packing material have been selected to protect theunit in shipping.


Unit Installation

2. Locate an appropriate mounting space.Because of its quiet fans, the Penteo PostPro Desktop processorcan be mounted in a control room mix position.

3. Connect an appropriate power cord.The power supply supports worldwide use.

The unit was supplied with an appropriate power cord for NorthAmerica. You may need to purchase a safety-approved powercord terminating in an IEC C5 (“mouse ears”) connector. Seeinside front cover for power requirements.

Ambient temperatures should not exceed 85 degrees F.Please provide ample air circulation space around the unit.


AES/EBU Digital Audio Connections

On all units:

The dbFS level – the Penteo processor’s digital input clip level – isfixed at 0dB relative to the maximum digital 24-bit word,±8,388,607.

Measured levels are relative to that dbFS level throughout allPenteo processing and do not change internally..

Per the AES3 standard, each digital input or output line carries apair of audio channels. The connection is 110Ω balanced. TheAES3 standard specifies a maximum cable length of 100 meters.

The alternate AES3id standard, over coaxial cable, is best forlonger cable runs up to 1000 meters. This specifies 75Ωunbalanced coaxial cable, terminated in male BNC connectors,appearing the same as a professional video cable. Baluntransformers (available from Penteo or from Neutrik) are requiredto interface an AES3id connection to the digital audio input oroutput.

The wordclock / AES3id sync input is designed for 75Ω operation.


AES/EBU Digital Audio Connections

Theoretical considerations aside, we have observed that it is usuallypossible to interconnect AES3id and AES3 connections withoutdifficulty if the cable length connecting the inputs and outputs isshort. Likewise, it is usually possible to interconnect AES3, AES3id,and S/PDIF connections without difficulty over short cable runs, asS/PDIF and AES3 connections share most common protocol features,and many hardware chipsets now transparently interconnect them.One possible warning: AES3 output signal levels could overload, andpossibly damage S/PDIF inputs without appropriate electricalpadding.


Rear Panel Audio Connections

Depending on which model you have, one of the following connection sets will apply to you:

PostPro-D (Digital Output) I/O

Two identical-size high-density-DB26 connectors appear on the back panel of the unit. Facing the rear panel, the left connector is for fixed 48kHz use, while the right connector can be used for non-48kHz digital sources via onboard sample rate conversion.


Rear Panel Audio Connections:

An optional D-sub to XLR breakout cable is normally supplied withthe unit, which terminates in XLR AES/EBU (AES3) connectors.These XLR connectors are labeled and color coded and function asfollows:

IN 1 Stereo Input OUT 1 Fronts Out

IN 2 Unused OUT 2 Center/LFE Out

IN 3 Unused OUT 3 Rears Out

IN 4 Unused OUT 4 Stereo Downmix Out

The pinout diagram of the 26-pin D-Sub connector is on page 30.

Wordclock in is provided on a female BNC connector. It must beenabled through a front panel menu option using F5 followed bythe down arrow key to access the “Change Clock Source” option.Input Wordclock must be 48kHz .


Tech NotesPenteo PostPro-D Input/Output:

Digital audio supplied to the “48k Only” connector musthave a 48 kHz sample rate. Audio with other sample ratesmust be connected to the “SRC” connector.

Because all Penteo internal processing is based on 48kHzsampling, the Penteo algorithm must take place at 48kHz, and theunit's output will always be output at 48kHz.

To use the Penteo PostPro-D with an input other than 48kHz( for example, with a CD Player's 44,1 kHz S/PDIF output withappropriate adapter cabling):

• If 48k house clock is desired for output clocking, connect an appropriate 48k wordclock source to the BNC connector.

• Power up the Penteo PostPro-D, with the BNC external input connector as the clock source (see page 28). If no house clock is needed, the BNC connectorneed not be physically connected to anything; it willdefault to internal clock at 48kHz. Conversely, If a clock issupplied to the BNC connector, it MUST be supplying a48kHz timing.

AFTER THE PENTEO UNIT HAS INITIALIZED TO AN AUDIOPROCESSING MODE:

• Ensure that the Penteo cable is connected to the SRC connector(rightmost as viewing the rear of the unit)

• Select “SRC Connector” as the audio source (InputSelect under function key F4 menu options.).

• Connect the source to “IN 1” on the Penteo audio cable.

• Connect or power up the digital audio source.

Following the above order forces the unit to first establishits 48kHz clock, then sample rate convert the incoming44.1 audio.



PostPro-A (Analog Output) I/O


pin connector handles the digital audio and wordclock inputs.The 25-pin connector handles the analog audio I/O cables, while the 15-Two unequal size D-Sub connectors appear on the back panel of the unit.


Cables coming from the 25-pin connector

IN 1 Stereo Left Input OUT 1 Front Left Output

IN 2 Stereo Right Input OUT 2 Front Right Output

OUT 3 Center Output

OUT 4 LFE Output

OUT 5 Rear Left Output

OUT 6 Rear Right Output


Cables coming from the 15-pin connector

LTC IN Unused DigitalIn XLR

AES/EBU (AES3)Input

LTC OUT Unused DigitalOut XLR

AES/EBU (AES3)Downmixed Stereo Output

CLOCK IN 48k House Clock In(Optional)

CLOCK OUT 48k House Clock Out(Optional)


Wordclock in is provided on a female BNC connector. For use, itmust be enabled through a front panel menu option using F5followed by the down arrow key to access the “Change ClockSource” option. Input Wordclock must be 48kHz.


Tech NotesPenteo PostPro-A Input/Output:

Analog input level reference:

The Penteo analog input level is calibrated to the maximumdigital 24-bit word, ±8,388,607, referenced to an incoming analogsignal of +20dBu. 16db below that level (+4dBu) is considered anoptimum 0VU input level.

Digital Inputs:

Because all Penteo internal processing is based on 48kHzsampling widths, the Penteo algorithm must take place at 48kHz.

To use the Penteo PostPro-A with a digital input other than48kHz ( for example, with a CD Player's 44,1 kHz S/PDIF outputwith appropriate adapter cabling):

• If 48k house clock is desired for output clocking, connect an appropriate 48k wordclock source to the BNC connector.

• Power up the Penteo PostPro-A, with the BNC external input connector as the clock source (see page 28).

• If no house clock is needed, the BNC connectorneed not be physically connected to anything; it will default to internal clock at 48kHz.

If a clock is supplied to the BNC connector, it MUST besupplying 48kHz.

AFTER THE PENTEO UNIT HAS INITIALIZED TO AN AUDIO PROCESSING MODE:

• Connect the source to the “Digital In” XLR connector.

• Connect or power up the digital audio source.

Following the above order forces the unit to first establish its48kHz clock, then sample rate convert the incoming 44.1 audio.


Operation

Front Panel Controls

• LCD Screen Display shows menu items and provides control-setting information.

• Function Keys provide fast access to the menu system:

F1 Operating Mode Menu

F2 Front/Rear Balance Control

F3 Center Boost Control

F4 Misc Options: Solo, Solo Location, Input Select

F5 Test/Setup: Clock source, Software Update

• Arrow Keys and OK Circle allow you to scroll through thePenteo processor’s menus and to set certain operating parameters.

• Power Key and LED Power Indicator

ALSO

• USB Port (behind door) permits easy software upgrades.

Powering On and Off

Press the power key briefly to turn the unit on, illuminating the LED display.

Press the power key briefly to turn the unit off. The unit will perform some necessary housekeeping, then shutdown, within 30seconds.

As with any OS-based embedded system,Avoid hard power downs when possible which

could cause reboot problems.


Using The PostPro

NEW USERS, START HERE.

Stereo recordings, since their beginnings in the 1950's, havecapitalized on their ability to aurally portray a left-to-rightpanorama – aurally parallelling wide-screen movies – withincidental (in the case of true stereo recordings) or specificallypanned discrete tracks spread out to form a wide panorama. Thiseffect is particularly noticeable and pleasant on headphones, ormuch more commonly, modern earbuds.

Traditionally, stereo sound recordings, for many obvious reasons,have usually had a center-placed lead vocalist, musician, actor ornarrator appearing in equal levels in both left and right speakers.Decades of stereo's listeners have become accustomed to thisexperience.

With 5.1, we now have a dedicated center speaker, – which makesit possible to remove that lead vocalist from the left and rightspeakers and place him or her in the center channel.

But should we? There are arguments on both sides:

Arguments FOR Hard Center:

• By focusing the lead singer or musician in the center speaker only, it tends to sound like a real, hard, single- point source, effectively appearing though the musician or singer is physically in the room.

• When listening at the sweet spot of a mix console, thecenter is quite solidly focused, and a single center speakerphysically recovers and solidly anchors that effect.


Using The PostPro

Arguments AGAINST Hard Center:

• Listeners have become accustomed to hearing a lead musician or singer spread out across the entire sound field, across the width of the whole room or automobile.

• By removing the lead singer or musician from the front leftand front right speaker, their mix dominance will only be maintained when the listener is in a proper position, near the center speaker.

• The discreteness of the mix means that it might be easy to miss vital parts of the mix if not properly reproduced.

• It simply sounds “too stark and discrete”.

As with many things in the entertainment field, there is no correctanswer; it's a matter of taste and artistic leaning.

For that reason, we provide several modes of operation, designedto please the different mix philosophies. They are discussed indetail starting on page 20.

No matter which mode or balanceoption you choose, the stereo downmix

will always remain an exact replica ofthe original.


Using The PostPro

CENTER BALANCE CORRECTION TEST

“It is impossible for any machine to ever be able todetermine what the original stereo mixer intended to bepanned to the absolute center of the mix. Ever.”

- John Wheeler, April, 2010

The Penteo process uses one simple criteria to determine whatsounds are to be placed in the center channel and, conversely,caused to not appear in the sides:

In Penteo, the waveforms that are identical in frequency, phase, andamplitude in both the left and right channels are placed in the center.

A simple linear taper is extended from the center to each endpoint.

Throughout the history of analog recording, left vs. right balancejust didn't need to be critically matched down to more than onedecibel or two. One or two decibels left-heavy or right-heavynever hurt a thing, and it was essentially inaudible.

Penteo, however, uses the “matchingness” to determine whatwaveforms appear in the center, and conversely, are eliminatedfrom the sides. Those slight, almost inaudible balance errors canbecome apparent on the rear extracted channels if they are largeenough.

Occasionally compounding this problem is incorrect NAB/CCIRplayback equalization on one channel only, causing Penteoprocessed vocal sibilants to leak to one side or the other.


Using The PostPro

The Penteo process is an excellent testing toolto determine the proper left vs. right balance of

a stereo mix, down to 0.2-0.3db.

In order to match the left and right channels as accurately aspossible, the Penteo PostPro unit has a built-in Channel BalanceCorrection Test, helping you to determine the most accurate left-vs-right channel balance for the stereo audio presented to thePenteo process.

As stated above, it is impossible for a machine to determine whatthe original stereo mixer may have intended to be panned to thecenter. Indeed even a human can only make an educated guess,especially on a mix on which many different or unusual panplacements are used, as to what the original mixer intended as thecenter.

With that in mind, the Penteo Channel Balance Correction Testcan be performed with these steps:

The most accurate results are obtainedby performing this test using headphones.

• Press the left or right keys of the keypad circle.Either key places the unit in Channel Balance Test mode.

• That first press does NOT change the channel balance, itsimply places the unit into test mode, in which the centeris eliminated, and the sides are presented to the frontoutputs.

• Subsequent presses of the key shift the channel balance tothe left and right up to 3db in each direction.

• The goal of shifting is to eliminate the center-pannedaudio. This can be an art, in that critical listening andeducated guessing may be needed to determine what theoriginal mixer intended as the center-panned sounds.


Using The PostPro

• Once the center is eliminated as best as possible, press the centerbutton in the circle. This will lock that channel balance offset.

• THE UNIT WILL FLASH CONTINUOUSLY in order toalert you that the unit is “off center”.

• Press the left/right circle keys as necessary to restorebalance when complete, and the unit will cease flashing.

Special circumstances when the center cannot beeliminated:

• Sibilants (S sounds) on a center-panned vocalist that appear inthe left or right as ghost images are often caused by unbalancedhigh-frequency EQ. You will need to lower the high-frequencieson the stereo source material on one channel only – the channelthe ghost sibilants appear on – using trial-and-error to zero in onthe proper EQ match. Future Penteo software revisions areplanned to assist in these corrections without resorting to trial-and-error.

• HAECO-CSG mixes, which primarily were performed at A&MRecords in the 1970's, have one channel rotated in phase by 90degrees. The stereo mix must be re-rotated prior to Penteoprocessing. The Voxengo PHA-979 works well for this process.(www.voxengo.com)

• Any variety of phase or delay effects which have been used thatcause the left and right channels to be out of phase or delayed intime.


Using The PostProBASIC OPERATION

To choose an audio mode from the front panel:1. Press the F1 button. The current audio mode will be

displayed.2. Press the up or down button to cycle through the available

modes.3. Press the Enter button to confirm it.

Audio Modes

The Audio Modes are:

• HARD CENTER

• PENTEO MUSIC

• STEREO PLUS

• QUADRAPHONIC

• THREE FRONTS

• TRIANGLE

Hard Center Mode:

Hard Center mode isolates center material to the centerspeaker only.

It can be used for music when it is desirable to separate out thecenter-panned lead singer or musician into the center speakeronly. It is also ideal for motion picture and televisionupconversion of an already-finished stereo mix, as all centerdialogue will be isolated to the center, with full left/rightseparation in the fronts and rears.

The front pair receives the extracted pure sides plus bassdiversion from the center, if selected. See Bass Redirect Toggle, p 26

The rear pair receives the extracted pure sides only.

In Hard Center mode: The F2 Key accesses front/rear balance control.The F3 Key accesses center boost level control.


Using The PostProPenteo Processing Modes

Penteo Music Mode:

In Penteo Music Mode, material panned to the center appearsloudest in the center speaker, but some also appears in thefront left/front right pair.

This mode is optimized for music, keeping the center channelvocalist loudest in the center, but not so discrete as to offendlisteners who are accustomed to a broad center vocalist comingfrom the full width of the stereo field.

The front pair also receives bass diversion, if selected. SeeBass Redirect Toggle, p26.


In Penteo Music mode: The F2 Key accesses front/rear balance control.The F3 Key accesses center boost level control.



Stereo Plus Mode:

In Penteo's Stereo Plus Mode, the original stereo mix appearsin the left front/right front pair, while those sounds that wereexclusively in the left-side of the stereo mix appear in the leftrear, the center panned material in the center, and the soundsthat were exclusively in the right appear in the right rear.

This version has the added advantage of making extensionspeakers, for example in a large home, possible, by simplyextending the left front and right front pair throughout thehouse, as it contains the entire original stereo mix.

Because all sounds are in-phase, a phantom center is created infront of the left front and right front speakers by the left rearand center and right rear and center speakers respectively.

The front pair also receives the extracted pure sides with bassdiversion, if selected. See Bass Redirect Toggle, p26.


In Stereo Plus mode: The F2 Key accesses front/rear balance control.The F3 Key accesses center boost level control.



Quadraphonic Mode:

In Penteo's Quadraphonic Mode, exclusive-left material isdirected to the left rear, exclusive-right material is directed tothe right rear, and the front pair receives a stereo mix withadditional center level added to precisely counterbalance therears.

This mode can be used for post-production situations in whichit is desirable to drop a center channel announcer into thecenter speaker, avoiding competition with a lead vocalist ormusician in the center speaker.

In Quadraphonic mode: The F2 Key accesses front/rear balance control.

Three Fronts Mode: (silent rears)

In Three Fronts Mode, the left rear and right rear remain mute.

The stereo mix is precisely replicated across the front threespeakers, with the phantom center replaced with a real one.

This mode is useful for extracting 1960s left/center/right mixesinto a three-fronts performance.

Triangle Mode: (silent front left/front right)

In Three Fronts Mode, the left front and right front remain mute.

The exclusive left is routed to the left rear, the exclusive right tothe right rear, with the exclusive center in the center.

This mode is designed for large venue use, such as in dance clubs,in which it would be difficult for listeners to audibly resolve fiveseparate surround channels.


Using The PostPro

Mode Modifications: The F2 and F3 keys

In Hard Center, Penteo Music, and Stereo Plus modes, the F2 andF3 keys provide additional flexibility:

F2. Front/Rear Balance:Front/Rear balance is variable in steps up to 6db toward the frontor rear. The balance is counterbalanced for downmix accuracy soit does not effect the resulting stereo downmix.

F3. Center Boost:Additional level is added to the center speaker, and removed fromthe front left and front right, adding additional center boost inproblem situations in which the center just doesn't seem loudenough.

SPECIAL CENTER BOOST NOTE:

Because Center Boost must add center channel boost while remainingcounterbalanced for downmix accuracy, the center channel

information will be subtracted from the front left and front right.

On modes such as Hard Center, this will cause some of the centerinformation to also appear at a low level in the front left and front

right speakers 180 degrees out of phase with the center channel itself.

This is not ordinarily a problem or cause for concern, and acousticallyhelps to focus the center.

The resulting downmix is still accurate (as all Penteo downmixes are).


Using The PostPro

Miscellaneous Options: The F4 key

The F4 key is the gateway to several options:

• CHANNEL SOLO

• SOLO LOCATION

• LFE ON/OFF

• BASS REDIRECT ON/OFF

• DOWNMIX ON/OFF

• INPUT SELECT

F4 CHANNEL SOLO This menu selection allows the user to scroll through eachchannel individually as well as through channel pairs. Combinedwith the "Solo In Place" option explained below, channelidentification is possible to ensure proper set up.

The available options are:

• Solo OFF

• Solo LEFT FRONT

• Solo LEFT REAR

• Solo RIGHT FRONT

• Solo RIGHT REAR

• Solo CENTER

• Solo FRONTS

• Solo REARS

• Solo LFE

• Solo LEFT PAIR

• Solo RIGHT PAIR


Using The PostPro

F4 SOLO LOCATION This menu selection allows the user to select where the output ofthe solo option in F4: CHANNEL SOLO above is placed.

The solo can be output in place to the appropriate speaker,redirected to the center speaker only, or redirected to the frontleft/front right pair.

This location selection remains permanent until reselected.

The available options are:

• Solo In Place

• Solo In Center

• Solo In Fronts

F4 LFE TOGGLE Penteo low-pass filters the sounds below 100Hz, and createssubsonic material for the LFE channel.

This option can be disabled by setting LFE to OFF, leaving theLFE channel silent.

This option remains permanent until re-selected.

Regardless of the LFE option, no bass is removed from anyof the 5 surround channels.

F4 BASS REDIRECT TOGGLE Most home 5.1 listeners do not have a center channel speakerwhich is capable of reproducing bass frequencies. When thisoption is enabled, the PostPro unit redirects sounds the bassfrequencies below 100 Hz from the center channel to the frontleft/front right pair, where a 5.1 listener will have full rangespeakers.



Using The PostPro

F4 STEREO DOWNMIX TOGGLE Both the PostProA and the PostProD provide a simultaneousdownmixed stereo output, delayed and in-phase with the 5.1output.

• On the PostProA, the downmix appears on the AES/EBU digital output.

• On the PostProD, the downmix appears on output pair 4.

This stereo downmix can be turned ON or OFF with this option..


F4 INPUT SELECT Provides access to digital vs analog inputs on the PostProA, andprovides access to SRC or 48k Only inputs on the PostProD.

The available options are (PostProA):

• Analog In

• Digital In

The available options are (PostProD):

• 48k Only Connector

• SRC Connector


Using The PostPro

Test/Setup Options: The F5 key

The F5 key is the gateway to several test/setup options:

• All Tests Off

• Change Clock Source

• Null-Out Test

• Simple Downmix

• Downmix @Match Level

• Downmix Mono

• Loop @Sound Card

F5 CHANGE CLOCK SOURCE

There are three possible clock sources for the PostPro unit:

1. Internal clock (select BNC external connector with nothing connected to the wordclock connector).

2. External Wordclock (select BNC external connector with valid 48kHz wordclock connected to the BNC).

3. Clock on Digital Audio 1 in: Unit locks to clock on the incoming digital audio stream on Input 1.

For the PostPro A (Analog) unit, clock source will default tointernal if no clock is supplied to the external BNC input or thedigital audio input, regardless of choice.

For most digital audio use, select the Digital Audio In clock,unless your facility has a house wordclock distribution system..


Using The PostPro

F5 NULL-OUT TEST Provides reassurance that the Penteo process is downmixing backto the original stereo by mixing the delayed original source withthe downmixed 5.1 upmix, but 180 degrees out of phase,producing silence.

F5 SIMPLE DOWNMIX Simple addition of the left rear plus the left front plus the centerto the front left channel; the extracted right rear plus the rightfront plus the center to the front right channel.

F5 DOWNMIX @ MATCH LEVEL Identical to “Simple Downmix” above, but lowered by 6db tolower the “doubled” levels to match the input level.

F5 DOWNMIX MONO All channels are added together and sent to the front channels.This has no padding and can easily overload the output,producing distortion, but is a quick-and-dirty mono test.

F5 LOOP@SOUND CARDSends the samples received by the Penteo processor from thesound interface and loops it directly back without any processing.


Connector Pinouts

PostPro D SRC and 48k Connectors:

Pin Signal Pin Signal Pin Signal

1 Clock Gnd 10 Clock In

2 out4 Cold 11 out4 Hot 19 out4 Gnd

3 out3 Gnd 12 out3 Cold 20 out3 Hot

4 out2 Cold 13 out2 Hot 21 out2 Gnd

5 out1 Gnd 14 out1 Cold 22 out1 Hot

6 IN4 Cold 15 IN4 Hot 23 IN4 Gnd

7 IN3 Gnd 16 IN3 Cold 24 IN3 Hot

8 IN2 Cold 17 IN2 Hot 25 IN2 Gnd

9 IN1 Gnd 18 IN1 Cold 26 IN1 Hot


Connector Pinouts

PostPro A Analog Connector

PIN SIGNAL PIN SIGNAL

1 OUT 4 POS 14 OUT 4 NEG

2 OUT 4 GND 15 IN 4 POS

3 IN 4 NEG 16 IN 4 GND










13

PostPro A Digital/Clock Connector

PIN SIGNAL PIN SIGNAL

1 9 DIGITAL OUT POS

2 10 DIGITAL IN NEG

3 11

4 SYNC IN POS 12

5 DIGITAL IN POS 13

6 14 CLOCK OUT POS

7 15 DIGITAL OUT NEG

8 CLOCK GND


Specifications

Penteo PostPro D

Inputs: 24-bit AES/EBU, transformer coupled

Sample Rates:Input:

• 48k Only Connector: 48kHz Only• SRC Connector: All Standard and Variable

Sample Rates to 96kHzOutput:

• 48kHz Fixed, 24-bit AES/EBU

SRC Dynamic Range: 142db

Clocking:

• Digital Input

• External Wordclock on BNC,

• Internal Clock (on-board low-jitter crystal oscillator)

Connections:

• Two 26-pin female high-density D-sub connectors

• External Clock: 75-ohm BNC Wordclock

Cables(optional): 26-pin male high-density D-sub to:

• four female XLRs (AES Inputs)

• four male XLRs (AES Outputs)

• BNC connector (Wordclock In).

Processing dynamic range: 144db

Power requirements: 100-240V, 50-60Hz, 2.5A Max

Internal Power Supply Certifications:CE / FCC / VCCI Certifications: EN55024, EN55022 Class B (CEcertification), Australia / New Zealand (using CISPR 22, EN55022),Japan (VCCI: using CISPR 22, ANSI C63.4), United States (FCC Part15, Subpart B, Class B), Canada (ICES-003 using CISPR 22, ANSIC63.4).External Power Supply Certifications: UL/CUL(12V,17V), TUV,PSE(15.1~17V), CCC, CE, CB, FCC part 15 class B and EN 55022 class B


Specifications

Penteo PostPro A

Analog Inputs: Balanced XLR connectors, +4 dBu nominal /+20dBu max.

Analog In Performance

• Frequency Response 20 - 20 kHz, ± 0.05 dB at 44.1 kHz sample rate

• Dynamic Range 117 dB, A-wtd.

• Signal-to-Noise 116 dB, A-wtd.

• Channel Crosstalk <-120 dB, 1 kHz signal @ -1dBFS

• THD+N -104 dB (0.0006%) @ -8 dBFS, 1kHz signal 22Hz-22kHz

Analog Out Performance

• Frequency Response 20 - 20 kHz, ± 0.05 dB at 44.1 kHz sample rate

• Dynamic Range 117 dB, A-wtd.

• Signal-to-Noise 117 dB, A-wtd.

• Channel Crosstalk <-120 dB, 1 kHz signal @ -1dBFS

• THD+N -104 dB (0.0006%) @ -8 dBFS, 1kHz signal 22Hz-22kHz

Digital Inputs: AES/EBU or S/P DIF format, transformer coupled,on XLR connectors.

Digital Output: 48kHz Fixed, 24-bit AES/EBU

Sample Rates: (via On-board Sample Rate Conversion): 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz

SRC Dynamic Range: 128 dB

Clocking:

• Digital Input

• External Wordclock on BNC,

• Internal Clock (on-board low-jitter crystal oscillator)

Connections:

• 25-pin female D-sub connector (analog audio I/O

• 15-pin high-density female D-sub connector (digital I/O)


Specifications

Penteo PostPro A (cont'd)

Cables(optional):

• 25-pin male D-sub to male and female XLR connectorson six-foot shielded twisted pair cabling (analog audio)

• 15-pin high-density male D-sub to

• (1) male and (1) female XLRs (digital audio I/O)

• (4) female BNC connectors (clock)

Processing dynamic range: 144db

Power requirements: 100-240V, 50-60Hz, 2.5A Max

Internal Power Supply Certifications:CE / FCC / VCCI Certifications: EN55024, EN55022 Class B (CEcertification), Australia / New Zealand (using CISPR 22, EN55022),Japan (VCCI: using CISPR 22, ANSI C63.4), United States (FCC Part15, Subpart B, Class B), Canada (ICES-003 using CISPR 22, ANSIC63.4).External Power Supply Certifications: UL/CUL(12V,17V), TUV,PSE(15.1~17V), CCC, CE, CB, FCC part 15 class B and EN 55022 class B

©2010, PenteoSurround, Inc.

PenteoSurround, Inc. “No Nonsense” Standard Service and Support Warranty

If you find physical defects in the materials or the workmanship used inmaking the product described in this document, PenteoSurround, Inc.“Penteo” will repair, or at its option, replace, the product at no charge toyou, provided you return it shipping prepaid, during the 12-month periodafter the date of your original purchase of the product.

Information is subject to change without notice and does not represent acommitment on the part of Penteo.

This is Penteo's only warranty and your exclusive remedy concerning theproduct. All other representations, warranties or conditions, express orimplied, written or oral, including any warranty of merchantability, fitness fora particular purpose or non-infringement, are expressly excluded. Except asset out above, the product is sold "as is" and you are assuming the entirerisk as to the products suitability to your needs, its quality and itsperformance.

In no event will PenteoSurround, Inc. be liable for direct, indirect, special,incidental or consequential damages resulting from any defect in theproduct or from its use, even if advised of the possibility of such damages.

All exclusions and limitations of this warranty are made only to the extentpermitted by applicable law and shall be of no effect to the extent in conflictwith the express requirements of applicable law.

postpro manual rebuild2

Documents

penteo processing penteo

penteo processor

penteo downmixes

penteo customer service

stereo downmixes

stereo audio media

stereo mix

pin male dsub