Listen Technologies LT-84 Manuel utilisateur

ListenTech-Note

Doc. # LTN0035 Page 1 of 2 Revision: 04-25-18

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Remote Powering the LT-84 Transmitter/Radiator Combo

OVERVIEW:

In the event an AC outlet is not located close to the LT-84 Transmitter/Radiator mounting location, it may

be necessary to remotely locate the power supply and run cable to the LT-84. There are two options

available to remotely power the LT-84. This tech note outlines the cable distances that can be achieved

with each option along with the number of Expansion Radiators (LA-141) supported. If more than two

expansion radiators will be connected to the LT-84, then an AC outlet near the LT-84 will be required.

OPTION 1: Remote Powering the LT-84 using CAT-5 cable (24 AWG)

This option requires the purchase of Listen’s LPT-A117 remote power supply kit (MSRP $9.00).

This kit converts the power supply barrel connector to an RJ-45 connector so that standard CAT-5 cable

can be used between the power supply and the LT-84, as shown below. The CAT-5 cable must be 24

AWG to achieve the distances listed in the table below. This option can be used with a standalone LT-84

or an LT-84 with one LA-141 Expansion Unit. To support up to two LA-141’s, proceed to option 2.

Option 1: Maximum Distance using CAT-5 Cable (24 AWG)

LT-84

Standalone

LT-84 plus (1) LA-141

Expansion Radiator

Maximum CAT-5 cable distance

between the power supply and LT-84

30 m. (100 ft.)

12 m. (40 ft.)

ListenTech-Note

Doc. # LTN0035 Page 2 of 2 Revision: 04-25-18

OPTION 2: Remote Powering the LT-84 using Speaker Wire (14 AWG)

This option requires the purchase of connectors not supplied by Listen.

Vetco Electronics ™ - www.Vetco.net Part Numbers: PH-48-1262B and PH-48-1268B (2.5mm DC Power

Inline Jack –Solderless w/Screw Terminals –2” Pigtail)

This option converts the power supply barrel connector to a terminal connector so that standard 14

AWG speaker wire can be used between the power supply and the LT-84 as shown below. The speaker

wire must be 14 AWG to achieve the distances listed in the table. This option can be used with a

standalone LT-84, an LT-84 with one LA-141 Expansion Unit or an LT-84 with two LA-141 Expansion

Units.

* Each expansion radiator MUST be connected directly to its own dedicated RJ-45 output jack on the LT-84.

You cannot daisy-chain the expansion radiators when remote powering the LT-84.

Please contact Listen Technologies with additional questions at support@listentech.com or

1-800-330-0891.

Option 2: Maximum Distance using Speaker Wire (14 AWG)

LT-84

Standalone

LT-84 plus (1) LA-141

Expansion Radiator

LT-84 plus (2) LA-141

Expansion Radiators

Maximum Speaker Wire

Distance between the

Power Supply and LT-84

122 m. (400 ft.)

61 m. (200 ft.)

38 m. (125 ft.) *

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