glensound gs fw024 mk11 1

The Glensound GS-FW024 MKII 1u 19” rack unit containing 4 separate 4 wire/IFB circuits.  The GS-FW024 MKII is the next generation on from the very popular original GS-FW024 and is one of our top of the range of extensive 4-wire talkback units.  Glensound has been designing and making 4-wire talkback units for more than 35 years and the GS-FW024 MKII builds on past experience to provide a highly reliable and comprehensively specified unit which is also hugely versatile and is ideal for the communication hub of small OB vans and small studios.

  • 4 outgoing and incoming talkback circuits
  • 1 incoming 'Programme' circuit
  • Presence LEDS indicate when an incoming talkback circuit receives audio
  • Internal front panel microphone and XLR for external microphone
  • Individual gain controls for both microphones
  • Glensound ‘Referee’ compressor/ limiter circuit on mic amps
  • Illuminated talkback keys can easily be programmed to alter operation mode (latching, momentary, latching & momentary (intelligent lever key))
  • All 4-wire circuits have input & output gain controls
  • 4 wire inputs can be looped to 4-wire outputs (IFB)
  • PGM input can be routed to 4-wire outputs
  • PGM inputs & IFBs can be mixed or cut when talkback keys are operated
  • Front panel switches for routing PGM & IFB & selecting mix/cut operation
  • Talkback groups can simply be defined
  • Mains powered 100-250 VAC
  • Front panel speaker and headphone jack (cuts front panel LS)
  • Balanced external LS output (0dB)
  • Front panel LS/Headphone volume control
  • Transformer balance outputs
  • Highly reliable electronic 'transformer' inputs
  • Power ON LED
  • All audio inputs & outputs on XLRs
  • Lazy mic output (permanent un-switched)
  • Loop inputs for remote operation of talkback keys
  • Loop outputs for red light switching/ external LS dim etc from talkback keys
  • Large labelling points for designation of audio circuits


Lineup Gain:54dB (For 0dBu output)
Gain trim control:+ / - 10dB
Input type:Electronically balanced


Type:Complex multi-point curve
Input Level:Output Level


-1dBu:@ 30 Hz
-2dBU:@ 20 KHz


All measured:@ +8 dB on output
100 Hz:<= 0.06%
1 kHz:<= 0.02%
10 kHz:<= 0.03%

MIC NOISE (RMS weighted 22-22KHz 300 Ohm termination)

Mic noise minimum gain:-75dB
Mic noise maximum gain:-54dB


Nominal line up:0dBU
Input Impedance:>22K
Type:Transformer balanced
Input Gain Control:+10 to - Infinity
Maximum input before clipping:+26dB
Present Led Illumination Point:-23dB
Frequency Response (measured to 4-wire output (IFB)):-1dBu @ 30 Hz
-2dBu @ 20 KHz


O/P gain range:-20dBu to +10dBU
Output Impedance:Type: Fully protected electronically balanced
Frequency Response (measured from 4-wire input (IFB)):-1dBu @ 30 Hz
-2dBu @ 20 KHz


Headphone Impedance:16 to 1000 Ohms
Headphone/LS Gain range:+10dB to -20dB (-Infinity by internal link)
Maximum Headphone output:+20dB into 600 Ohm headphones
Frequency Response (Measured at headphones):-1.4dBu @ 30 Hz
-0.8dBu @ 16 KHz
LS Dim:Front panel preset None to Off (factory set to -14dBU)
LS Amplifier:3.5 Watts
Internal LS:Magnetically Shielded, Full Range 220Hz to 20kHz


Mains Input:100 - 240 VAC
Max Consumption:8.5 Watts
Queiscent:3.7 Watts


Width:19 inch
Depth:205mm (excluding connectors)
BW Price Guarantee

(Subject to conditions)

Glensound GS-FW024 MKII


Tech Support

2-Year Warranty


Related products
STUDIO Glensound GS-FW024 MKII