Outboard Audio Processing

Whilst not in pursuit of ESSB, I am trying to maximise my 3Khz transmit bandwidth with audio processing. I have chosen equipment based on performance as well as keeping the item count down to minimise the potential for RF pick-up into the audio. Starting with the Aphex Channel, which is widely regarded in the studio arena for vocal audio processing, using the Aphex patented Aural Exciter and Big Bottom. Additionally, the tube Pre-amp and Phantom Power provide a good base for the Rode NT-2A Condenser Microphone.

A Behringer QX1002USB Mixer provides level control and the ability to add effects to the audio stream, having Klark Teknik Multi-FX Processor on-board and a manual 3 band EQ for audio tailoring of other audio sources. 

For Receive, a set of JBL Control 2P Active Studio Monitors, as recommended by Bob Heil are connected to a Nobsound switch to enable switching between the Radios, and has been modified with a tap to feed the Shack PC Line In for on-air recording. Recorded audio can be sent back over the air from the USB line in, into the mixer. An optional patch is provided to line-in for the Sonos System.

Software for recording is Audacity, and for Real-time Audio Spectrum testing, Spectrum Lab. Pink Noise is generated from a smartphone ! (Well, it works and it's free)

Next Purchase will be a TC Electronic DBMax, or Omnia/Orban Processor if I can find one.





Outboard Audio Components

Rode NT-2A Microphone

Rode SM6 Shock Mount

Blue Microphones Compass Boom

Aphex Channel Pre-Amp and Input Processor

Behringer QX1002USB Analog Mixer

W2IHY Inspired Homebrew Isolator Attenuation box

8 Pin Yaesu to XLR Custom Cable

Fair-Rite Ferrite Sleeves, Many of them !

JBL Control 2P and Slave Studio Monitors

Atacama Nexus 5i Speaker Stands 

Juicebitz 2m USB Shielded cable

Douk Audio Nobsound 2:1 Switch (Modified to add a output tap)

Custom 3.5mm Stereo Patch Cables - (Van Damme Instrument Wire / Rean 3.5mm Stereo Plugs)

Balanced Patch Neutrik XLR with Van Damme Cable - Ultimate Pro Audio 


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