DB90-TX

IP Audio Encoder

Compact, Multi-purpose and Affordable

The DB90-TX is an integrated audio converter that translates the audio signal into a high quality compressed audio stream. The signal is compressed with HE-AAC, MPEG-1 Layer 3 encoder. In order to ensure audio transmission without quality loss, the DB90-TX also supports an uncompressed PCM stream. The audio compression is performed in real time and the output signal is transmitted directly over IP-based networks.

The DB90-TX can work with both analog and digital audio signals. Although sophisticated, the DB90-TX comes in a small and compact form that allows quick and efficient streaming of the program audio to the Internet. The unit can be used as an Icecast compatible server, Icecast Source Client, or Real Time Protocol (RTP) sender.

Developed with the goal of easiness of use, the DB90-TX can be managed through a standard Web browser. iOS and Android devices are also supported, making this tool the best choice for not only professional, but also newbie broadcasters.

Compact, Multi-purpose and Affordable
  • High Quality HE-AAC (v.1 & 2) and MPEG-1 Layer-3 Compression
  • 32 kHz, 44.1 and 48 kHz sample rates support
  • Up to 56 kbps bitrate for HE-AAC
  • Up to 320 kbps bitrate for MPEG-1 Layer-3
  • Up to 3072 kbps for PCM
  • 6 LEDs and Phones output for quick diagnostics
  • IP address pronunciation at startup (through the headphones)
  • DHCP Client automatically assigning Network Settings
  • Full Control and easy setup via a standard web browser
  • UPnP for easy discovery in Local Networks
  • Shoutcast / Icecast compatible TCP/IP stream
  • Analog Audio Input (2 x RCA connectors)
  • Digital Audio Input (RCA Connector)
  • Up to 10 simultaneously connected clients

Designed to match our idea of outstanding performance, DB90-TX converts the audio signal into high quality compressed audio stream. Situated on thousands of locations all over the world, DB90-TX allows management by any kind of web browser from your PC, PDA or any kind of mobile device. That is what makes it the best choice for professional and consumer use.

Operating with either analog or digital audio signal, DB90-TX comes in a small and compact form, allowing for quick and effortless integrating of the existing audio systems to the Internet. The signal compression is performed in real time by HE-AAC Versions 1 and 2 and MPEG-1 Layer 3 encoder. In order to ensure audio transmission without quality loss, DB90-TX also supports uncompressed PCM audio stream.

Once an audio source is selected, the encoded in real time audio is immediately transmitted over IP-based networks. DB90-TX can act simultaneously as an Icecast compatible Server, Icecast source client or Real Time Protocol (RTP) sender. The audio stream can be spread over an IP-based network to one or more (up to 10) DB90-RX or other compatible IP audio decoders.

DB90-TX TYPICAL APPLICATIONS:

1. Audio Transmission over IP-based networks (DB90-RX or compatible IP audio decoder is required at the opposite site)

2. Audio Transmission over IP-based Point-to-Point Wireless Link

3. MultiPoint Audio Transmission over IP-based networks

4. Low delay Real time Audio Transmission

5. Source client for Icecast compatible online radio

In line with the latest technology, DB90-TX in combination with one or more decoders, (such as DB90-RX and DB9000-RX, for an instance) is complete solution for long distance audio-transmission applications.

Compact, Multi-purpose and Affordable
Audio codec
CodecHE-AAC (v.1 and v.2), MPEG-1 Layer 3 or raw PCM
Sample rates32 kHz, 44.1 kHz and 48 kHz
Channels1 or 2
BitrateUp to 56 kbps (HE-AAC); Up to 320 kbps (MPEG-1); Up to 3072 kbps (PCM);
MPEG-1 Layer 3 specific
Encoding modeMono and Stereo, Joint Stereo or Dual Channel
Emphasis50µs, CCITT J.17 or none
PCM codec
Channels1 or 2
BitrateUp to 3072 kbps
Analog audio input
Connector2 x RCA, stereo
TypeUnbalanced
Level+6 dBu (max. +8dBu)
Sample rate96 kHz; Build-in sample rate converter used to produce lower sample rates
Dynamic range102 dB
Digital audio input
ConnectorRCA
TypeS/PDIF (IEC 60958)
ResamplingThru build-in sample rate converter
Streaming server
TypeShoutcast / Icecast compatible TCP/IP stream
CodecAAC, MP3, PCM
ClientsLimit Up to 10 simultaneous clients
Icecast Source Client
TypeIcecast Source Client
CodecAAC, MP3, PCM
Count1
RTP Sender
TypeUnicast RTP Sender
CodecAAC, MP3
Count1
Phones audio output
Connector3.5mm jack, stereo
TypeHeadphones
User interface
Indicators6 LEDs on front panel
Web interfaceFull control and status information
Network
ConnectorRJ-45
TypeEthernet
Device discoveryUPnP support
Operating conditions
Temperature10°C - 45°C
Humidity< 75%, non-condensing
Power requirements
ConnectorPower Jack 6,3mm
Power supply12V DC, 1A
Size and Weight
Dimensions (W;H;D)106 x 33 x 128 mm
Shipping Weight230 x 54 x 172 mm / 0.640 kg
HS Code8517620000
Frequently Asked Questions
  • Can the DB90-TX be used as a multicast sender?
    The DB90-TX IP Audio Encoder can send audio to a number of clients simultaneously, provided that a multicast address is being entered as a client address. The IP Multicast Group address should be specified in the RTP senders' settings.
  • I have forgotten my password for the WEB Interface. What should I do?
    If due to any reason you have forgotten your WEB Interface password, in order for a new password to be assigned to the device, the unit should be returned to its factory defaults.
    The procedure is performed via the reset button placed on the rear panel of the device. To ensure that the procedure has been properly completed, please follow the instructions below:
    • Unplug the device from the power supply;
    • Press and hold the reset button;
    • While pressing the button, connect the device to the power supply again;
    • Wait for a few seconds, until the Power LED starts blinking;
    • Release the reset button;
    • The device should be returned to its factory defaults.
  • How can the encoder be set to act as a Streaming Audio Server?
    Prior to implementing the below written adjustments, the following requirements should be fulfilled:
    • DB9000-TX/DB90-TX must have a static IP address;
    • If the device is placed behind a router, you will have to make sure that the Port and Stream Server are properly NAT forwarded;
    • DB9000-RX/DB90-RX may have a dynamic IP address;
    • DB9000-RX/DB90-RX should have access to DB9000-TX/DB90-TX over the network (Internet or LAN).

    In order for the DB9000-TX/DB90-TX to be used as a Streaming Audio Server the following settings should be applied, via the WEB Interface:
    • Go to Configuration > IP Audio;
    • Audio Settings section - Choose the preferred audio signal input. Assign Encoder +Sample rate and the desired signal quality. The combination of these parameters will define the required minimum bandwidth of your network connection;
    • Stream Settings section - Specify the Port to be used and the maximum supported connections. Preferably change the name of the stream to identify you server easily.
  • How the encoder can be used as an Icecast Source Client?
    Prior to implementing the below written adjustments, the following conditions should be fulfilled:
    • DB9000-TX/DB90-TX should be connected to a Network (Internet or Local connection);
    • DB9000-RX/DB90-RX configured as Icecast Source Server with static IP or an Icecast distribution server with static IP. For further information on how the DB9000-RX/90-RX could be set to work as an Icecast Server refer to DB9000-90-RX_Icecast Source Server;
    • DB9000-TX/DB90-TX could be set with dynamic IP.

    In order for the DB9000-TX/DB90-TX to act as an Icecast Source Client, the following settings should be applied, via the WEB Interface:
    • Go to Configuration > IP Audio;
    • Audio Settings section - Choose the preferred audio signal input. Assign Encoder +Sample rate and the desired signal quality. The combination of these parameters will define the required minimum bandwidth of your network connection;
    • Icecast Settings section – Specify the URL or IP Address, and Port of the Icecast Source Server to be used. In order for the server to accept the audio feed, the username and password (preliminary assigned to the server) should be written in the relevant fields. If an Icecast Distribution server is used, the mount point should also be specified.
  • How the encoder can be used as an RTP Sender?
    Prior to implementing the below written adjustments, the following conditions should be fulfilled:
    • DB9000-TX/DB90-TX should be connected to a Network (Internet or LAN);
    • An RTP receiver with static IP and properly configured static IP;
    • DB9000-TX/DB90-TX could be set with dynamic IP.

    In order for the DB9000-TX/DB90-TX to act as an RTP Sender, the following settings should be applied, via the WEB Interface:
    • Go to Configuration > IP Audio;
    • Audio Settings section - Choose the preferred audio signal input. Assign Encoder + Sample Rate and the desired signal quality. The combination of these parameters will define the required minimum bandwidth of your network connection;
    • RTP Settings section – Specify the URL or IP Address, and Port of the RTP Receiver to be used.
  • DB9000-TX/DB90-TX cannot be assigned with static IP. How can I configure it?
    For further information on the variants of usage when DB9000-TX/DB90-TX cannot be set with static IP, refer to question:
    "How DB9000-TX/DB90-TX can be used as an Icecast Source Client, feeding with audio DB9000-RX/DB90-RX, working as an Icecast Source Server, or an Icecast Distribution Server?"
    "How DB9000-TX/DB90-TX can be used as an RTP Sender, feeding with audio DB9000-RX/DB90-RX, working as an RTP receiver?"
  • What should be the buffer level? How can I apply the needed settings?
    The Buffer is used to supply an audio at the output when disconnection or a problem with the connection is present. The higher the buffer level is the longer the protection time will be. Though, the audio delay will be increased. The level at which the buffer will be set depends on your preferences and expected results as it comes to the quality of the connection. If a connection loss is not expected, the buffer level could be decreased. If the connection is unstable (such as 3G Network), we recommend a higher buffer level to be set.
    The buffer level is set in bytes, thus, the audio delay depends on the bit-rate of the audio stream. For example - audio with higher bit-rate will have a lower delay compared to audio with the lowest bit-rate at the same level of the buffer.
    The buffer level is the received amount of audio data at which the RX will start playing the audio. In the DB90/9000-TX settings should be set the pre-buffering level, which is the initial amount of data that is sent to the RX in order for the buffer to be filled rapidly i.e. the connection to be built quickly. We recommend the same values to both units to be set.
    All needed settings are applied via the WEB Interface.
    • For DB90/9000-RX go to Configuration > IP Audio > IP Audio Client subsection and set the pre-buffer level;
    • For DB90/9000-TX go to Configuration > IP Audio > Stream Settings subsection and select the pre-buffer level from the drop-down menu.
  • Can the DB90-TX/DB9000-TX be used as an audio source for Shoutcast system?
    The DB90-TX/DB9000-TX can be used as an Icecast Source client, but not as Shoutcast Source. Shoutctast/Icecast in the product specifications refers to the built-in Icecast/Shoutcast compatible stream server, i.e. clients as Winamp, for example, can connect to DB90-TX/DB9000-TX and play the audio.

DB90-TX Demo Devices

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