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FM-4 Digital Audio Processor

VORSIS_LOGOThe FM-4 is targeted for budget-conscious applications where the multi-mode versatility of VP-8 Plus isn't required. Equipped with a reference grade stereo generator, analog, digital, and SCA/RDS inputs, FM-4 can handle virtually any input program source. The versatility of its composite and digital outputs allows FM-4 to easily interface with all FM exciters. Front panel setup, easy to use GUI Lite ‘sound tuning’ software, and that sought-after, pristine but competitive Vorsis sound, round out the FM-4’s feature set.

Remote control is via 100-Base-T wired Ethernet and Windows®-based GUIs.

Dimensions: Height - 1.73", Width - 17.398", Length - 13.325"

  • Technology
  • Features
  • Images
  • Resources

The FM-4 owes its heritage to the highly successful six-mode VP-8. We've re-packaged and realigned many of its best features to create an FM-only processor that fits even the tightest of budgets, yet is more than competitive enough for the most demanding medium and small markets.

Vorsis Bass Management System

The Vorsis Bass Management System (VBMS) circumvents bass-related distortion plaguing other broadcast audio processors. The result is increased bass impact and detail without affecting the clarity of mid and high frequency program -- in fact bass detail and the clarity of higher frequency audio are actually enhanced by the VBMS algorithm.

Smart Stereo Enhancement

Stereo Enhancement is a common feature in audio processors today. However our approach is a new technology we call Smart Stereo Enhancement. Operating in the sum and difference domain within the multiband AGC and under the management of specialized automatic level and spectral management algorithms it provides a wide but extremely stable 'on-air' stereo image. "Wide", "alive", "exciting to listen to", and "very natural sounding" are terms customers have used to describe how our enhancement method sounds. Many users have reported hearing artistically important nuances in music that were simply inaudible when the same material was processed by competing products.

  • Four band phase linear adjustable crossover feeding a four band AGC
  • Four band phase linear crossover feeding a four band limiter
  • Exclusive VBMS(TM) (Vorsis Bass Management System)
  • FM peak control via oversampled lookahead limiter or distortion masked clipper
  • Four band full parametric equalizer
  • Variable high pass filter and voice phase rotator
  • Ethernet-based remote control via 100BaseT Ethernet and rear panel RJ-45
  • Eight input GPI preset triggers
  • AES3 digital input accepts 32kHz - 96kHz
  • AES3 digital output automatically synchronizes to AES3 digital input
  • Precision FM stereo MPX generator with multiplex mask filters
  • 25 specially tuned Factory presets
  • Front panel setup and configuration menu eliminates the need for a PC during installation

Recommended Applications:

  • FM Analog
Click an image below to enlarge it to the full width of your screen. While the image is enlarged, you can hover your mouse cursor over it to magnify the picture.
FM-4 Front PanelFM-4 Front PanelFM-4 Front Panel FM-4 Rear PanelFM-4 Rear PanelFM-4 Rear Panel

Folder IconManuals

#NameSizeLast Updated On
1FM-4 Owner's ManualFM-4 Owner's Manual (View)7.25 MBNov 23, 2010

Folder IconLiterature

#NameSizeLast Updated On
1FM-4 BrochureFM-4 Brochure (View)1 MBNov 23, 2010

Folder IconSoftware

#NameSizeLast Updated On
1FM-4 Factory PresetsFM-4 Factory Presets (View)23.61 kBNov 23, 2010
2FM-4 GUI Lite SoftwareFM-4 GUI Lite Software (View)5.98 MBNov 23, 2010

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