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Solidyne 542APC


Universal Processor & Mod Monitor

5 Band universal audio processor + FM Analyzer + RDS & FM/HD/AM/TV/Streaming.


2,337.00 2,220.00
633.00 602.00


The Orion-462dsp is the processor that many AM and FM radios were looking for to enter to the digital era, still having little money. With the 462dsp an excellent audio quality is obtained, impossible to reach with standard analogical processing.

The coverage area of your radio, both in AM and FM, will be increased up to 50 %. The processor supports analogical balanced inputs and digital AES-3 inputs (optional). It has dual output: MPX out for FM transmitter and simultaneous balanced analog outputs for Internet streaming.

It has 30 memories to store your favorites processing programs (20 preset memories, factory adjusted to go immediately On-Air). All adjustments can be made, in few minutes, from the front panel, using a scrub wheel and following the instructions on the LCD panel. You can assign a password to the system to avoid that somebody changes your adjustments. Also, the processor has a RS232 port to connect it to a computer for remotely commute the programs. The 462dsp replaces 10 audio processors, thus surpassing to many digital processors of greater cost.

We have applied in this unit our 35 years of experience developing audio processors for broadcasting, because we are the older world company, with more experience in this field. The 462dsp is 100% digital, equipped with several DSP units (Digital Signal Processor) that have a total power of 2700 MIPS (million calculations per second). But, which is more important, the 462 uses the fourth generation of DSP, that eliminates the rough digital sound and annoying artifacts, characteristic of the digital processors of the present market. The unit uses converters of 24 bits @ 192 KHz and the processing is made in 48 bits, to eliminate the truncate errors that the audiophiles do not wish to listen… We recommend you to listen our Demos of sound. You will verify that the 462 is the only processor that offers the crisp sound of the digital technology, bringing deep bass and high stereo definition, characteristics of the sound of hi-end Audiophile Audio Systems.

Model 462dsp has included a digital SC-100 stereo coder with the new oversampling technology. Model 462-AM, for AM transmitters, is mono and has two independent balanced XLR outputs for main and spare transmitters. It complies with the NRSC-1 and NRSC-2 recommendations for AM and have up 150 % asymmetry capacity.

Additional information

Weight 5 kg
Product can be split into multiple boxes


Ship Separately



Technical Specifications

Analog Input
600/10 K balanced XLR 50 dB CM Rejection 20-15 Khz. Input level selected by software in 1 dB steps. Sigma-Delta converters 24 bits / 192 Khz

Digital Input
Optional AES-3 digital balanced input Z=110 ohms. Automatic selection of 32, 44, 1, 48, 96 & 192 Khz with sample rate converter (128 dB Dynamic Range, -117 dB THD) to avoid jitter

Analog Output
600 balanced XLR, output level +4 dBm Sigma-Delta converters 24 bits / 192 Khz

Digital Output
Optional AES-3 digital balanced output, Z=110 ohms FS=48 or 96 Khz, selected by software

MPX Output
From 2 Vpp to 5 Vpp in 0.2 steps

Processing Technology
DSP (Digital Signal Processing). Total CPU power 2.700 MIPS

MPX Post-Processing
SuperModulation exclusive Solidyne technology, at 608 Khz oversampling. Fast clipper DC-10 Mhz wideband channel to avoid audible artifacts

Frequency Response
20-15.000 Hz +/-0.25 dB. Flat mode XLR out or digital AES-3 Out. Output without pre-emphasis

Harmonic Distortion (THD)
THD below 0.008 % (30-15 Khz, Flat Mode)

Dynamic Range= 95 dBA

Stereo Separation
75 dBA @ 1 KHz: > 65 dBA @ 30-15.000 Hz

Subsonic Filter
Chebyshev FC=20 Hz 25 dB rejection at 10 Hz

Asymmetry Canceling
Phase processing technology with Kahn-Bonello algorithms. Cancelling Factor=8:1

Linear Expander
Range=20 dB Attack & Release time software controlled

Gated Wide-Band AGC
Range=30 dB. Attack / Release time & Threshold controlled from LCD screen

Multiband Compressors
DSP controlled. Five Bands, Crossover= 24dB/oct Max compression = 30dB. Slope = 10:1

Compressors Attack/Release Time
Attack and Release controlled separately

IM Canceled Clipper
IM canceling factor : greater than 30 dB below 250 Hz

Fast Clipper
Four channels, absolutely alias free using DC-10 Mhz bandwidth channel

Density Equalizer
Four bands density equalizer with 15 dB range at the output of multiband compressors

Low pass filter
15 Khz digital low pass FIR filter, 60 dB rejection at 19 Khz

Storage of Preset Settings
30 programs that can be changed on-air from PC computer using the 462dsp serial port

RS-232 PC control
RS232 serial port. It can be connected to USB bus with optional external adapter. Optional Ethernet bus connection

Super Modulation
MPX processing for stereo interleaving, allows for 130% L & R audio level at 100% modulation

RS-232 PC control
Yes. It includes free Windows 2000/XP software

AM FM compatible
The user can change the processor's AM/FM firmware chips. Only two socket mounted Flash EPROM IC's have to be replaced. Stereo coder is a separate module

Processing Bands and stages
Five processing bands / Nine processing stages

LCD Display
Blue color, LCD display with backlight. Graphic type Resolution 240 x 64

RDS Encoder
Optional built in RDS encoder

90/127V and 190/230V; 50/60 Hz, selectable from rear panel

483 mm Wide 240 mm Deep, 88 mm High

  • Five bands: 5 x AGC; 5 x Compressor; 5 x Limiter; 5 x Clipper (IM cancelled)
  • Increases the radio distance range and avoids interference and noise in News & Journalism programs
  • Total flexibility: The 542 is a Universal Processor that changes the model and number of bands by changing software
  • The software can be remotely upgraded without interrupting the on-air programming.
  • Improves the announcers voices due the settings change from Music to Voice when microphones are open
  • The only processor at the market that includes FM Monitor with Audio Quality Analyzer
  • In case of failure of the connection with studio automatically switches to another input
  • It’s the only processor at market that improves your sound quality by correctios of the chain: Xmtr – Coaxial – Antenna
  • It send messages to cell phone about transmission problems or operating errors
  • Includes RDS / RBDS Coder to see texts in FM receivers
  • Includes TWO versions of remote control software: one for engineers and other for operators (Lite Commander)
  • Options 542/ AoIP for streaming input and RM-542 for remote control from the studio



Solidyne - 45 years of innovation in the design of analog & digital consoles, audio processors & codecs.


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Technical Specifications

  • INPUTS:Stereo balanced XLR3 connector, 600 ohmsNominal level +4 dBu. Max level +24 dBu, Software adjusted
  • Stereo balanced on RJ45 (compatible StudioHUB)Nominal level -10 dBu to +24 dBu, 600 ohms
  • Digital AES-3 input transformer balancedNominal level -18 dBFS Adjust from -24 to 0 dBFSSample rate 44.1 KHz – 48 Khz – 96 KHz
  • Optional stereo AoIP for LAN Ethernet or Internet input
  • RF Input: Digital Receiver for FM Monitor and Audio Analyzer
  • VOICE/ MUSIC change: GPI = +5V … +15V for VOICE preset (On-Air mi-crophones). Voice/Music switch received from console in AoIP models
  • OUTPUTS:Analog Balanced on XLR connector+4 dBu; Z= 600, Max +18 dBu, Flat frequency response.
  • Analog unbalanced RJ45 output (compatible StudioHUB)+4 dBu/600 ohms.
  • Digital AES-3 transformer balanced 0VU at -12 dBFS
  • MPX-1 & MPX-2 for FM transmitters (Normal & Emergency)0 – 5,5 Vpp Independent level software controlled, Z=50 Ohms
  • Diferential output, BNC connector, foating ground 50 ohms Allows 45 dB canceling buzz & noise due to ground loopsProtected for electrical storms 2 KV overload
  • Optional AoIP processed digital output in /AoIP models. It allows for di-rect audio streaming or for AoIP connection between diferent Studios
  • IN/OUT Control:Automatic fold-back to switch the input in case of absence of signal in the main input.
  • Frequency response:ANALOG BAL = 20 – 16 KHz +/- 0,3 dB
  • AES to AES = 20 – 16 KHz +/- 0,3 dB
  • Measured below compression & limiter threshold
  • Harmonic distortion:ANALOG BAL = Below 0,005 % @ 1 KHz
  • AES to AES = Below 0,002 %
  • Dynamic Range:ANALOG BAL to ANALOG BAL = 95 dBA
  • AES to AES = 110 dBA
  • Stereo separation:> 80 dBA
  • Subsonic flter:Chebyshev 4th order, Selectable: OFF – 40 Hz
  • Asymmetry cancelling:5:1 cancelling reduction using Khann-Bonello method
  • Expander:Software controlled with user settings
  • Multiband compressors:From 4 to N bands depending of software version used
  • Linear Phase crossover
  • Software adjustable automatic attack and release time
  • Multiband compressors:From 5 to N bands, scalable by frmware.
  • Linear Phase crossover
  • Software adjustable automatic attack and release time
  • EFFECTS:Super BASS efect and Stereo Enhancer is standard in all software versions
  • Linear limiters with predictive technology (Look Ahead) replaces the oldclipper systems giving the audience a full clean sound
  • PROCESSING:#bands, #stages, features, etc are 100% dependent on software versionused. It can work in FM, AM, HD, TV & Streaming modes
  • Standard 542APC works in fve bands FM mode 0-50-75 uS
  • Latency (typical) 9 mS
  • POWER:115 V / 230 V (rear switch selected) 50/60 Hz, 20W
  • DIMENSIONS:19″ rack mount. Module one (44,4 mm) // weight 3 Kg Net; (4 Kg for courier freight)


  • DIMENSIONS:Two MPX outputs with individual remote level control by LAN or Internet
  • Differential output, BNC connector, foating ground 50 ohms. Allows 45 dB canceling buzz & noise due to ground loops
  • Level of each output adjustable from 0 to 5,5 Vpp
  • FREQUENCY RESPONSE:20-15.000 +/- 0,2 dB, plus 16 Khz/linear phase flter Attenuation at 19 Khz > 80 dB
  • THD:Better than 85 dBA with reference to 100% modulation. Measured using Belar Digital Stereo decoder model DSD-1A19″ rack mount. Module one (44,4 mm) // weight 3 Kg Net; (4 Kg for courier freight)
  • STEREO SEPARATION:>65 dB at 1 Khz
  • 38 Khz SUPRESSION:Below -80 dB Ref 100% modulation
  • 57, 76 & 95 Khz SUPRESSION:Below -80 dB Ref 100% modulation
  • PILOT TONE STABILITY:+/- 0,002 % (+/- 0,5 Hz)


  • RDS / RBDS SIGNAL:Conforms to CENELEC EN50067 / EN 62106 / Control interface based on ASCII commands and UECP protocol
  • Built-in weekly scheduling
  • RDS SIGNAL BANDWIDTH:+/- 2.4 kHz (50 dBc)
  • DATA CONNECTOR: ETHERNET PORT:RJ45 connector for TCP/IP LAN Ethernet Text features include dynamic PS, parsing, scrolling, fxed messages, scheduling and reading from HTTP.
  • DATA PORT SPEED:2400 – 9600 BPS

Solidyne 542APC Brochure

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BROADCAST Audio Processors Solidyne 542APC