Heritage Audio 8-SLOT 500 Series Rack with Premium 24-Bit User Manual

: June 10, 2024
: Heritage Audio

Table of Contents

INTRODUCTION
DESCRIPTION
GETTING STARTED
REAR
- DIGITAL CONNECTION
APPLICATIONS
WIRING FOR DB25 CONNECTORS
SPECIFICATIONS
- ANALOG I/O
- DIGITAL CONNECTIONS
TROUBLE SHOOTING
WARRANTY STATEMENT
REGISTRATION
RECALL SHEETS
References
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Heritage Audio 8-SLOT 500 Series Rack with Premium 24-Bit User Manual

INTRODUCTION

Thank you for choosing the OST-8 adat. Heritage Audio is dedicated to bringing you ´the sound of yesterday for tomorrow´. We specialize in capturing that unique, enticing sound that everybody has fallen in love with. For years engineers, producers and musicians have been yearning for that classic vibe. Usually the only option is to search for old, used original equipment that is almost always in a questionable state of operation. This brings with it a whole lot of other issues, making the experience less than desirable. Not to mention the very high prices asked for this equipment, which makes them virtually unobtainable for the great majority. Now it´s possible to obtain that same sound with a brand new piece that will give you all the problem- free, heavy-duty use you´ll need for years of music making history.

Peter Rodriguez
CEO
Heritage Audio – Madrid, Spain

© 2022 Heritage Audio S.L. is the sole owner of the copyright of all information and drawings contained in this manual which are not to be copied or reproduced by any means or disclosed in part or whole to any third party without written permission.

Heritage Audio reserves the right to alter specifications without notice. The information in this manual has been carefully checked and is believed to be accurate at the time of publication. However, no responsibility is taken by us for inaccuracies, errors or omissions nor any liability assumed for any loss or damage resulting either directly or indirectly from use of the information contained within it.

DESCRIPTION

The OST-8 adat 500 series encosure is designed for racking any and all 500-series modules and devices, including ‘double wide’ modules and even the most demanding class-A and vacuum tube designs, and connect them to your existing audio interface. It features Heritage Audio’s On Slot Technology, providing maximum protection, filtering, and isolation to each channel. While most 500-series enclosures on the market have a relatively simple power supply design essentially feeding every channel in parallel, each channel of the OST-8 adat enclosure has its own power supply, individually regulated and isolated from the rest. This ensures that every 500-series module installed will perform at its peak potential, and that no ‘power hungry’ or even a faulty module will compromise the performance of another. In addition to reducing interference, many 500-series devices actually exhibit lower self- noise and better performance when racked in the OST-8 adat enclosure, specially mic preamps.

The best part is we have incorporated a premium analog to digital converter to send your signals on to your DAW as easily as possible. This high quality, premium ADC is 24Bit and offers selectable internal sampling frequencies variable from 44.1 kHz to 192 kHz in addition to being externally syncable by WordClock. This all takes place using just one ADAT Lightpipe cable. One of the neatest features of the unit is the ability to individually, per channel, decide whether the signal converted and sent to the DAW comes directly from the corresponding input (non-processed signal), after the 500 series module (processed signal) or from an external source. What this allows you to do is send your ´500 Series´ processed signal out to another signal processor and then return it to the unit so it can be converted digitally and sent along to your DAW. This can really come in handy if you need a bit of external rack EQ or compression for more control before the digital conversion. This actually means you have 3 selectable sources for each of the eight converters, a seemingly small detail that can really make a big difference when you´re knee deep in the mix or session and don´t have time to spare.

This also means that you can use the OST-8 adat as a stand-alone converter and gradually add 500 modules at your convenience to setup your ideal rig. So for those times when all you need is a top-of-the-line analog to digital converter, look no further, you already have it right here.

All the inputs and outputs are provided on gold plated XLRs with LINE inputs and outputs also being offered on DB25 connectors for convenience. These DB25 connectors follow the TASCAM protocol for wiring. The alternative 8 External Inputs for the converter are also available on a DB25 connector. Then, of course, are the format specific connectors for ADAT (two of them for SMUX possibilities) and BNC WordClock Input and Output.

Another new and exciting feature in the OST-8 adat is the Link option, allowing each channel to be internally routed over to the next at the push of a button (via back panel), no patch cables required!

As with all Heritage Audio products; the 500 Series OST-8 adat enclosures are built utilizing the most cutting edge methods in manufacturing and design, without ever compromising audio quality or cutting corners.

GETTING STARTED

Getting Started

SLOTS (8)
On Gold Plated Edge Connectors
SLOTS (8)
On Gold Plated Edge Connectors
COMPRESSION LINKS
Jumpers used to determine the Compression Linking between adjacent slots
ADC INPUT SWITCHES 1-8
To choose the input path for the analog to digital converter
FREQUENCY INDICATOR
Sampling Frequency of the ADC
FREQUENCY SELECTOR FOR ADC
To Choose the Desired Sampling Frequency of the ADC
POWER BUTTON ON/OFF
Turns the Unit On
VOLTAGE LEDs
Verify that the correct voltage is arriving at each slot (±16 V) as well as +48 V

REAR

Rear

BNC IN & OUT CONNECTOR
Connect for Wordclock Syncing
OUTPUTS
On Gold Plated XLRs
25 PIN D-SUB(DB25)CONNECTOR ANALOG TODIGITAL CONVERTER
Additional External Line Inputs
25 PIN D-SUB(DB25)
CONNECTOR OUTPUTS Line Outputs
75 Ohm TERM BUTTON
Push to Activate Termination
ADAT – S/MUX Optical Ports
Outputs on Digital ADAT Format
EXTERNAL POWER INPUT
HA-PSU02 On Gold Plated XLR5
INPUTS
On Gold Plated XLRs
AUDIO LINKS
Link Output With Input of Adjacent Slot
25 PIN D-SUB(DB25)
CONNECTOR INPUTS Line Inputs

DIGITAL CONNECTION

Digital Connection

ADAT/SMUX

All XLRs are:

Pin 1: GND
Pin 2: Hot
Pin 3: Cold

MALE XLR

FEMALE XLR

APPLICATIONS

DRUM RECORDING
SETUP 1

DRUM RECORDING
SETUP 2

MIXED INPUT RECORDING

VOCAL LINKED EQ PROCESSED/UNPROCESSED

This configuration would be used to record two tracks of the same signal, one straight from the Preamp and the other processed through a 500 series module. In this case we´re using an EQ for processing.
Vocal Linked EQ Processed/Unprocessed

MIXING INSERT SETUP 1

MIXING INSERT SETUP 2

STAND ALONE CONVERTER

WIRING FOR DB25 CONNECTORS

All DB25 multi pin connectors are TASCAM protocol. This same protocol is also used by AVID amongst many others, and is a follows:

Pin-out for TASCAM DB25 8 Channel Balanced Connector

H = HOT
C = COLD
G = GROUND

The list of the DB25 connectors used and their corresponding channels are as follows:

CHANNEL INPUTS 1-8:

TASCAM DSUB CHANNEL #| CHANNEL I/P 1-8
1| INPUT # 1
2| INPUT # 2
3| INPUT # 3
4| INPUT # 4
5| INPUT # 5
6| INPUT # 6
7| INPUT # 7
8| INPUT # 8
CHANNEL OUTPUTS 1-8:

TASCAM DSUB CHANNEL #| CHANNEL O/P 1-8
1| OUTPUT # 1
2| OUTPUT # 2
3| OUTPUT # 3
4| OUTPUT # 4
5| OUTPUT # 5
6| OUTPUT # 6
7| OUTPUT # 7
8| OUTPUT # 8
ADC EXTERNAL IN 1-8:

It is worth noting that, in order to avoid ground loops, the DB25 ground connections are lifted on the OST-8 adat side, leaving the ground paths of your DB25 snakes only acting as shields and preventing any current returns.

SPECIFICATIONS

ANALOG I/O

XLR Inputs & Outputs: Gold Plated Balanced +4 dB Connectors.
DB25: 25 Pin Balanced +4 dB Eight Channel Connectors.
On Slot Technology.
Maximum audio rails current: 1,8 A per rail, or 400 mA per rail per slot, whatever is reached first.
Maximum phantom power current: 140 mA.
Operating voltage: Universal 100-240 V AC.

DIGITAL CONNECTIONS

ADAT

Connector Type: Optical TOSLINK JIS F05.
ormat: ADAT Digital Lightpipe with S/MUX.
Cupported Sample rates (kHz): 44.1, 48, 88.2, 96, 176.4, 192.
Channel Assignments @ 44.1 kHz, 48 kHz: Port 1 = Channels 1 – 8, Port 2 = 1 – 8 (mirrored).
Channel Assignments @ 88.2 kHz, 96 kHz: Port 1 = Channels 1 – 4, Port 2 =Channels 5 – 8.
Channel Assignments @ 176.4 kHz, 192 kHz: Port 1 = Channels 1 – 2, Port 2 = Channels 3 – 4.

Word Clock

Connector Type: BNC.
Word Clock Input Termination: 75 Ohms, switchable.

Synchronization Sources

INTERNAL, EXTERNAL (Word Clock)

Dimensions/Weight

Dimensions (W x H x L): 200 mm x 134 mm (3U) x 482 mm.
Weight: 4,715 Kg.

TROUBLE SHOOTING

PROBLEMS	SOLUTIONS
There doesn’t seem to be any power feeding the OST-8 adat.	Make sure the

1-1A-PSUO2 power supply has beenconnected.Double check that you have correctly connected the Inputs and Outputs.Make sure you have not accidentally pressed one of the “LINK’ buttons on the back.Check to make sure you have selected the correct input for the Converter (In/Out/Ext/). This needs to be done for each of the 8 channels.Make sure you have connected the BNC for a WordClock signal from your DAW(MASTER) to your OST-8 adat (SLAVE).
No audio seems to be getting to the modules.
My audio is still not passing through the installed 500 series module.
There is no converted signal being sent to my DAW.
I am having trouble syncing my OST-8 adat to my DAW.
I am still having trouble syncing my OST-8 adat to my DAW.| Make sure you have selected the EXT option with the Sampling Frequency (F.S.) button.
There is still no signal arriving at my DAW from the ADC.| Double check that the appropriate connector (LightPipe) is indeed inserted properly.
There are clicks being generated.| Make sure you have selected the correct Sampling Frequency with the (ES.) button.
There are still clicks being generated.| Make sure you are using a BNC cable to connect the WordClock signal.
There are unexpected noises and/or jitter being produced.| If your unit is the last in a group of digitally synced units you should press the ’75 Ohm Term’ button.
I have everything connected correctly but I’m still not receiving any signal in my DAW.| Make sure you have selected the correct INPUT routing in your DAW.

WARRANTY STATEMENT

LIMITED 2 YEAR WARRANTY
Heritage Audio OST-8 adat is warranted by Heritage Audio SL to be free from defects in materials and workmanship for the period of 2 years to the original purchaser. In the event of such defects, the product will be repaired without charge or, at our option, replaced with a new one if delivered to Heritage Audio prepaid, together with a copy of the sales slip or other proof of purchase date. The warranty excludes problems due to normal wear, abuse, shipping damage or failure to use the product in accordance with the specifications.

Heritage Audio shall not be liable for damages based upon inconvenience, loss of use of the product, loss of time, interrupted operation or commercial loss or any other damages, whether incidental, consequential or otherwise.

This warranty is not transferable.

Heritage Audio and the Heritage Audio “H” logos are registered Trademarks owned and/or licensed by Heritage Audio.