Neets Audio Preamplifier

Network Controlled Audio Preamplifier with PoE

Description

Neets Audio Preamplifier is a network controlled audio preamplifier controlled through LAN or RS-232.

The Preamplifier adds additional RS-232 and I/O ports for expansion of the AV system and integrates with Neets and 3rd party control systems.

The USB audio input enables direct audio input and volume control from a computer (PC or Mac). The Preamplifier can be powered by Power over Ethernet or the included 12V PSU.

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  • 4 unbalanced stereo inputs
    Unbalanced stereo audio input for line input on RCA connectors
  • 1 Balanced stereo audio output
    Stereo balanced or single ended line level output on terminal blocks
  • USB audio
    Provides audio playback and volume control on connected PC or Mac
  • Power over Ethernet
    Power can be supplied through PoE
  • 1 LAN port
    Enables control of the amplifier and adds two extra RS-232 ports for expansion of the control system
  • 2 Bi-directional RS-232 ports
    Used for control or expanding the AV system with more devices
  • 4 General Purpose I/O ports
    Used for extra input/output ports for control of relays, switches and sensors. The I/O ports can also be used for direct control of basic functions of the preamplifier
  • Auto power function
    Powers on when signal is detected, and enter sleep-mode automatically after 15 minutes without signal
  • 12V DC power in/out
    When powered by PoE the 12V DC output supplies power for external devices such as control system. When not powered by PoE the included 12V PSU can be used for power input
  • Input 1 Mix function
    Possible to set Input 1 as an input, that mixes with the current selected input.
  • 3 band equalizer
    Works as an active filter for bass, mid and treble
  • LED indicators on the front
    Convenient located on the front for easy performance indication
  • Easy mounting
    Can be mounted in trunking systems, hidden or in 1RU using the Neets Rack Shelf
  • Configuration
    Configuration takes place via USB or LAN using a built-in configuration area that fully integrates with Neets Project Designer
Line output:
Balanced output: 1 stereo output
Output impedance: 100 Ohm
Output level @ 0 dB/FS: 1.3 Vrms/+4 dBu
Connector: 5 pin screw block

Analog audio input:
Unbalanced inputs: 4 stereo inputs
Input impedance < 100 k Ohm
Max input level: 2 Vrms
Input gain adjustable: +/- 12 dB
Wake on signal: Adjustable level
Connector: 2 x 4 RCA female

USB audio input:
Supported OS:
MAC OS-X
Windows XP, Vista, 7, 8, 8.1,10
Bit depth: 16 bit
Sample rate: 48 kHz
Controls: Volume, mute
Wake on signal: Trigger on 5V USB
Connector: USB-B female

Power input/output:
Input/output voltage: 12 VDC
Max power usage : 5 W
Standby power usage: < 3 W
Connector: 2 pin screw block

Power over Ethernet:
Compliance: 802.3af / 802.3at
802.3af mode: A + B
PD Class: 2

Power adaptor (included):
Input voltage: 100 VAC – 240 VAC
Line frequency: 50 Hz – 60 Hz
Max power usage : Max 25 W
Connector: Prong matching country of sale

Network (LAN):
Speed: 10 / 100 Mbit
Duplex modes: Half or Full
DHCP: Default off
Default IP: 192.168.254.252
Default gateway: 192.168.1.1
Default subnet mask: 255.255.255.0
Connector : RJ45 with LED

RS-232 / IR ports:
Ports: 2 x bidirectional
Baud rate: 1200 – 115200 bit/sec
Data bits : 7, 8
Parity: Even, Odd, None
Stop bits: 1, 2
IR frequency: 400 Hz to 500 KHz
Connector: 2 x 3 pin screw blocks

Input / Output:
Ports: 4 x I/O
Input trigger low: < 1VDC
Input trigger high: > 4VDC
Output type: Open drain
Isolated output: No
Max voltage load: 24 VDC
Max current: 0.5 A
Connector : 5 pin screw block

Dimensions:
Width: 218 mm
Depth: 70 mm
Height: 37 mm

Width: 8,58 Inches
Depth: 2,76 Inches
Height: 1,46 Inches

General:
Weight: 0.5 kg
Storage temperature: -20 °C to 50 °C
Storage moisture: Non condensing
Operation temperature: 0 °C to 30 °C
Operation moisture: Non condensing

Approvals
IEC/EN 61000-6-1
IEC/EN 61000-6-2

Software

Neets Project Designer
Neets Project Designer
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  • Q: Does the Neets Preamplifier support PoE?
    A: Yes, When powered by PoE the 12V DC output supplies power for external devices such as control system. When not powered by PoE the included 12V PSU can be used for power input
  • Q: How do I access the settings in the Preamplifiers?
    A: Simply connect a USB to the amplifier with Project Designer running, and you will be prompted with a dialog box asking if you would like to access.

    Or

    Connect a RS-232 or LAN cable in order to change the settings by sending codes to the amplifier. All codes can be found in the manual.
  • Q: How can I control the Preamplifier?
    A: You can control the preamplifier via RS-232, LAN, the buttons on the front and in an upcoming firmware it will be possible to control the amp with the I/O’s as well.
  • Q: Why is the power LED of the amplifier is blinking red?
    A: The amplifier is in an error state, please refer to the manual for further trouble shooting.
  • Q: What can I use the second RS-232 port for?
    A: When using the first port for control, the second port turns into a loop-through port where you can connect any other device, e.g. a projector or a display.
  • Q: is it necessary to connect 12VDC to the Preamplifier in order to configure it?
    A: No, configuration can be done at your desk, with only a USB cable connected to the front USB.
  • Q: Can I operate the Preamplifier independently without a control system?
    A: Yes, you can control the Preamplifier from the front mounted buttons. You need to set the power to be default ON and save the setting.

Neets Audio Amplifier 2:25 and Preamplifier over LAN

See how easy it is to add the amplifiers via LAN in Neets Project Designer.

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