4 Wire Equipment

GENERAL
Glensound have been manufacturing 4 wire equipment for many years and on this page are some items that do not appear any where else on this web site. For instance all of our commentators equipment is designed for interfacing with 4 wire systems for program and co ordination circuits, even our very popular portable ISDN unit GSGC5 can be used as a 4 wire commentary box when no ISDN line is available.
 

19 Inch Rack Units

GSFW-003 SINGLE 4 WIRE UNIT
This mains operated 1U subrack incorporates a single 4 wire system

GS1U-036 TWIN 4 WIRE UNIT
A mains operated 1U Subrack with two 4 wire circuits.

GS1U-047 TWIN 4 WIRE UNIT
A mains operated 1U Subrack with two 4 wire circuits...very similar to GS1U-036

GSFW-002 SINGLE 4 WIRE UNIT
This unit is designed to fill just half (left or right) of a 3U subrack

GS-FW014 offering 6 x 4 wire circuits in 1RU
A mains powered 19inch 1RU subrack offering 6 x 4 wire circuits plus 2 additional audio inputs.

GS-FW010 and GS-FW011
2 similar units, 1 x 19inch rack and 1 desktop, offering 1 x 4 wire circuit with extra audio loop through circuits, and a 'buzz' facility.

GS-FW018 SINGLE 4 WIRE RACK WITH INTERRUPTIBLE PROGRAM
A very fully featured single channel 4 wire subrack, offering 1 x 4 wire circuit with a program input & IFB.

Desktop & Portable Units

GS-FW021 Beltpack Headset 4 wire/ 2 wire interface
Small communication beltpack with long battery life, ideal for connecting headsets to communication circuits

GS-FW013 Desktop Single 4 wire unit
A desktop mains powered 4 wire talkback unit

GS-FW007 SINGLE CHANNEL 4 WIRE TALKBACK UNIT
An excellent, yet simple desktop unit, offering all the facilities required in 1 easy package, identical to the GS-FW013 but with an external PSU.

GS-FW005 DESKTOP BOX WITH 2 X 4 WIRE CIRCUITS
A hard wearing unit designed for every day use in an OB environment

GS-FW012 Portable/ desktop unit with 4 x 4 wire circuits
Robust 4 wire unit with IFB and extra Program input

GSVC2   4 CHANNEL 4 WIRE TALKBACK BOX
A rugged portable 4 x 4 wire talkback box.

GSFW-001   4 CHANNEL 4 WIRE TALKBACK SYSTEM
A 2 part system, base station and control panel, providing 4 off 4 wire talkback circuits

GSFW-008 BATTERY OPERATED SINGLE CHANNEL TALKBACK UNIT
Provides 1 x 4 wire circuit with IFB plus allows Talkback to be inserted to a stereo (headphone) circuit.

GSFW-009 MIC & LINE LEVEL INPUTS
2 x 4 wire circuits with 1 input being line level and the other mic level.

GS-FW010 and GS-FW011
2 similar units, 1 x 19inch rack and 1 desktop, offering 1 x 4 wire circuit with extra audio loop through circuits, and a 'buzz' facility.

GS-FW016 & GS-FW017 SINGLE FOUR WIRE BOX WITH IFB
This new small desktop four wire box offers lots of facilities for one four wire channel.

GS-FW020 5 x 4 WIRE CIRCUITS PLUS PGM INPUT
A good communication unit suitable for permanent installation or outside broadcasts

4 Wire to 2 Wire Converters

GSFW-004  PORTABLE PASSIVE 4 WIRE TO 2 WIRE CONVERTER
This is an extremely rugged device made for the OB environment

GSFW-006 3 OFF 4 WIRE CONVERTERS
This is a 19 inch rack that switches up to 3 off 4 wire to 2 wire converters into circuit  

Comparison table of 4 wire units

GS CODE

19" RACK

Desktop

Mains Power

External DC Power

Number of 4 wire circuits

4 wire input can be routed to output

Interruptible program input

Gain control on inputs

Audio present LED on inputs

Front Panel Loudspeaker with DIM control

Headphone output with L/R switching

Headphone output (cuts LS)

Front panel electret microphone

External mic input with gain control

3 pin XLR 4 wire Connectors

Multipin 4 wire connectors

Audio Transformers on inputs

Audio Transformers on outputs Lazy Mic Out

2 Wire In/Out

GS1U-036 Y   Y   2 Y 1   Y Y   Y Y   Y   Y Y Y  
GS1U-047 Y   Y   2 Y 1 Y Y Y   Y Y   Y   Y Y Y  
GS-FW001   2 PART Y   4   4   Y Y Y     Y 1/4" JACKS       Y  
GS-FW002 3RU HIGH 1/2 WIDTH   Y   1     Y   Y   Y Y Y Y   Y   Y  
GS-FW003 Y   Y   1     Y   Y   Y Y Y Y   Y   Y  
GS-FW005   Y Y   2     Y   Y       Y Y   Y Y   Y
GS-FW007   Y   Y 1     Y   Y   Y Y Y Y   Y      
GS-FW008   BELTPACK   INTERNAL BATTERY 1 Y         Y     Y Y     Y    
GS-FW009   Y   Y 2 (1 INPUT MIC LEVEL)     Y   Y   Y   Y   Y        
GS-FW010 Y   Y   1   1 Y   Y   Y   Y   Y Y      
GS-FW011   Y Y   1   1 Y   Y   Y   Y   Y Y      
GS-FW012   Y Y   4 Y 1   Y Y   Y Y Y Y   Y      
GS-FW013     Y Y 1     Y   Y   Y Y Y Y   Y      
GS-FW014 Y   Y   6       Y Y   Y Y Y   Y Y      
GS-FW016   Y Y   1 Y (MIXED OR CUT)   Y   Y   Y Y Y Y   Y      
GS-FW017   Y   Y 1 Y (MIXED OR CUT)   Y   Y   Y Y Y Y   Y      
GS-FW018 Y   Y   1 Y 1 Y Y Y   Y Y Y Y   Y      
GS-FW020   Y Y   5   1   Y Y Y   Y Y   Y Y      
GS-FW021   BELTPACK   INTERNAL BATTEY 1 Y           Y   Y Y   Y Y   Y