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Pre-Out (Preamplifier only) 

The Pre-Out connection of the Preamplifier connects to a separate power 

amplifier using the supplied Euroblock connector. If the connected power 

amplifier supports balanced inputs, this is the preferred connection meth

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od. Use good quality interconnect cables with proper shielding for best 

performance.

 

RS-232 connectors

The onboard RS-232 ports (T1, R1, T2, R2) can be used for one- or two-

way communication with external RS-232 compatible devices, or used 

alternatively as IR ports. T1 and R1 are used as defaults to control the 

 

amplifier. T2 and R2 are used when daisy chaining multiple units or when 

using the unit as LAN to RS-232 gateway.

IO Connectors

The amplifier has four I/Os available. These are multifunctional digital inputs 

or outputs which can be configured for different purposes. The I/Os can be 

configured for general purpose functionality with control from either LAN 

or RS232RS-232  connections. For example, it is possible to connect an 

external control keypad, PIR (movement) sensor, keyboard lock, or extra 

relays to the amplifier with everything controlled remotely from a connected 

control system. 

 

The ports are not potential free; you may need external relays if you need 

to prevent ground loops. When used as outputs, the ports are active low. 

When indicated as active, the pins are tied to GND. 

LAN connector

The LAN connector is used to connect the amplifier to the local area net

-

work. The LAN interface enables control of the amplifier either from a con

-

nected control system or the built in web interface. 

 

On the Preamplifier, the LAN interface also supports Power over Ethernet 

(PoE) function. The Preamplifier can be powered from a PoE enabled switch 

or PoE injector using only the LAN connection. 

 

The LAN port features auto MDI-X which means that you can connect the 

LAN port directly to a control system without the need for a switch.

 

There are two LEDs on the connector with the following indication:

Color

Off

On

Blink

Yellow

No link

Link

Activity

Green

10Mbit

100Mbit

Summary of Contents for 2:25

Page 1: ...Neets Audio Amplifier 2 25 Neets Audio Preamplifier Installation Manual...

Page 2: ...local distributor or Neets A S Langballe 4 8700 Horsens Denmark by E Mail Support Neets dk or you may use our contact form at www neets dk Revision list This document no 230 028 312 0010 has the foll...

Page 3: ...components inside These openings must never be blocked by other objects Do not use this equipment near water To reduce the risk of fire or electric shock do not expose this apparatus to rain or moistu...

Page 4: ...ut connected to power amplifier 13 RS 232 connection 14 How to use 16 Controlled from the front panel 16 Controlled from the built in webserver 16 Controlled from LAN by remote protocol 17 Controlled...

Page 5: ...Ethernet Power can be supplied through PoE 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 12...

Page 6: ...included Input voltage 100 VAC 240 VAC Network LAN Speed 10 100 Mbit Duplex modes Half or Full DHCP Default off Default IP 192 168 254 252 Default gateway 192 168 254 254 Default subnet mask 255 255...

Page 7: ...z 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 192 168 254 252...

Page 8: ...face where it should be mounted and screw the two screws through the holes in the top as shown below The unit also can be mounted in a 19 inch standard rack using the Neets Rack Shelf Part number 306...

Page 9: ...the yellow LED marked in will illuminate when the input is high and turn off when the input is low The green LED marked out will remain off When an IO is configured as output the green LED marked out...

Page 10: ...Line audio input The connectors marked Line in are line level audio inputs Connect your audio sources here with an RCA cable White inputs are left channel red inputs are right channel USB audio input...

Page 11: ...ther LAN or RS232RS 232 connections For example it is possible to connect an external control keypad PIR movement sensor keyboard lock or extra relays to the amplifier with everything controlled remot...

Page 12: ...ier 12 V DC input output connector Preamplifier only On the Preamplifier this connector can be used to supply power to the unit using the included mains power adaptor Alternatively the connector can b...

Page 13: ...t AWG 18 0 75 mm2 speaker cable for cable lengths under 5 meters Above 5 me ters use at least AWG15 1 5 mm2 If the speaker manufacturer specifies even thicker cables follow the recommendation from the...

Page 14: ...wire connect second IR emitter black wire to G as shown above When used as single IR port Connect the IR emitter white striped wire to T1 or T2 and the black wire to G as shown above When used as RS 2...

Page 15: ...quipment can be controlled through the unit s IOs by either RS 232 or LAN For example a Neets Switching Relay 2 can be controlled when connected as shown here Powering external control systems from th...

Page 16: ...is held for a longer period of time the volume will decrease at a faster rate of 5 dB second Mute the audio output To toggle between mute and unmute on the unit s output press both down and up button...

Page 17: ...know the IP address of your amplifier or preamplifier and that this address is within the IP range of your network If this is not the case please change the settings using USB config connection first...

Page 18: ...urce number corresponds to the new unit ID number Press and hold the source button for 5 seconds to store the selection as the new unit ID When the amplifier is powering up it indicates its current un...

Page 19: ...ircuit on the output excessive tempera ture or overvoltage events on the power supply Please remove power from the amplifier check all connections and loads and re apply power If the error is not reso...

Page 20: ...the value is 0D in decimal it is 13 or When making a command it consists of several parts Each part is separated with a comma E g NEUNIT 1 INPUT 4 CR Please be aware that all the commands are case sen...

Page 21: ...es SAVE TRUE W Get set unit ID You can set the unit ID number either at the front of the unit source select but tons as explained on page 20 RS 232 or LAN allows setting of any ID that does not exceed...

Page 22: ...ALSE R W Activate wake on signal at the input WOS X ON OR OFF OFF R W Set wake on signal trigger level for input 1 to 4 Note Only works for B 1 2 3 or 4 LEVEL X 70 to 30 50 R W Set wake on signal time...

Page 23: ...on or off MIXMUTE X ON or OFF OFF R W Unit SN UNITSN X xxyyzzzzz R Examples of use NEUNIT 1 SETTINGS OUTPUT LOW 5 CR Sets low band equalizer to 5 dB NEUNIT 1 SETTINGS OUTPUT HIGH 3 CR Sets high band...

Page 24: ...X R W Control the output ACTION X SET RELEASE or TOGGLE R W Delay before executed of action Start delay DELAY X 0 6500 0 second W Time changes the action from latch to momentary in this time TIME X 0...

Page 25: ...me be tween the two outputs can be activated BLOCK TIME X 0 6500 0 second 0 R W Up time The time it takes the screen to move from bottom to top of the screen UPTIME X 0 6500 0 second 0 R W Down time T...

Page 26: ...PPORT X 0 65555 5000 R W Get the MAC address of the unit MACAD DRESS X xx xx xx xx xx R Set the multicast address the unit must use when communi cating with other Neets units by LAN Remember when chan...

Page 27: ...stop bit STOPBIT X 70 to 30 50 R W Set the comport TCP Port number if used as LAN gateway IPPORT X 70 to 30 50 R W Example of use NEUNIT 1 SETTINGS RS 232 RS 232 1 BAUDRATE 19200 DATABIT 7 CR Sets RS...

Page 28: ...ing IR command before sending the next Below are the settings for the IR For all commands the mandatory start sequence looks like this NEUNIT A IR B Where A as default is 1 and B is the IR port number...

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