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The SRM by P Squared

The SRM is a small, fixed format designed by P Squared to provide a high level of features in a package that novice broadcasters could easily understand. It is designed to work interactively with their Myriad Playout system but is equally at home working with any playout software.

It's simple layout and colourful design belie the advanced technical features that the mixer offers such as intelligent interaction with Myriad Playout, programmable fader functionality and a built in TBU. 

Whilst P Squared designed the feature set and look of the SRM, the actual electronic design and fabrication was done in partnership with Sonifex so the SRM combines P Squared's innovative design with more than 45 years of Sonifex experience building broadcast electronics.

Part Number: SRM

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Key features include:

  • User friendly broadcast mixer
  • Clear, simple layout with no jargon
  • Designed for broadcasters with all levels of experience
  • Nine multi-function channel mixer
  • Built in telephone interface
  • Built in headphone volume limiter
  • Large, simple LED volume display
  • Remote output for fader starts
  • Speaker muting when 'Mics' are on
  • External mic-light switching output
  • 'Program' and 'record' outputs
  • 'Aux' input for iPod or MP3 players
  • Four microphone/line channels
  • Four Myriad channels / line
  • Switchable telephone/AUX channel
  • Connects to Myriad via USB cable
  • Start buttons for Myriad Cart Players
  • Channel lights show Myriad Cart status
  • Rack or flush mountable
  • Guest headphone 'talkback'
  • Reliable, low cost mixing solution

Mic Inputs Audio Specification

Input Impedance: > 1k5Ω electronically balanced
Input Gain Range: Preset pot +24dB to +67dB ref -50dBu, TRIM pot ± 15dB
Frequency Response: 40Hz to 20kHz –1dB, +0dB
Mic input E.I.N.: -130dB with 150Ω source
Phantom Power: +48V to each mic input (SCi selectable)
Common Mode Rejection Ratio: > 60dB typically
Pan Range: Off/-3dB Centre/Off

Stereo Line Inputs Audio Specification

Input Impedance: > 20kΩ electronically unbalanced
Input Gain Range: +10dB ref 0dBu at PGM output, TRIM pot ± 15dB
Frequency Response: 20Hz to 20kHz –0.5dB, +0dB
Noise (20Hz-20kHz): -92dBu ref 0dB (fader down, no routing)
Total Harmonic Distortion: 0.015% at 1kHz, 0.015% at 10kHz ref +8dBu
Balance Range: ± 6dB

Outputs Audio Specification

Output Impedance: PGM output: < 50Ω electronically balanced
REC output: < 75Ω unbalanced Monitor output: < 75Ω unbalanced 
Headphone output load: > 16Ω, recommended 250Ω
Maximum Output: PGM output: +26dBu balancedREC output: Level:+16dBu unbalanced

Input & Output Connections

Audio Inputs: 4 x Microphone XLR-3 pin sockets
  12 x Pair stereo line RCA phono sockets
  1 x Pair stereo aux RCA phono sockets
  1 x Stereo aux 3.5mm jack socket
Audio Outputs:  
PGM: 2 x XLR-3 pin plug (balanced)
REC:       1 x Stereo pair RCA phono sockets
Monitor Inputs:                1 x Stereo pair RCA phono sockets
Monitor Outputs: 5 x 6.35mm (1/4”) stereo jack sockets
(2 x presenter, 2 x guest, 1 x loudspeaker)
Remote Outputs: 9 x 6.35mm (1/4”) stereo jack sockets (one per channel)
1 x 6.35mm (1/4”) stereo jack socket for light control
Telephone:         2 x RJ11 6/4 (1 x line, 1 x handset)
USB Audio: 1 x Type-B receptacle
USB Serial: 1 x Type-B receptacle
Mains Input: Filtered IEC, continuously rated 85-264VAC, 47-63Hz, 45w nominal, 50w peak
Fuse Rating: Anti-surge fuse 2A 20 x 5mm

Equipment Type

SRM SRM radio broadcast mixer

Physical Specification

Dimensions (Raw): 48.3cm (W) x 35.6cm (D) x 12.5cm (H)
19" (W) x 14" (D) x 4.9" (H) 
Dimensions (Boxed): 67cm (W) x 44cm (D) x 25cm (H)
26.4" (W) x 17.3" (D) x 9.84" (H)
Cut-Out Dimensions: 44cm (W) x 34.7cm (D)
17.32" (W) x 13.66" (D)
Weight: Nett: 8.5kg  Gross: 10.12kg
Nett: 18.7lb Gross: 22.26lb

What we think...

This is our best selling mixer and the one we use in the majority of our studio packages. It is perfect for novice broadcasters but also offers a level of functionality that means that it is just as appealing to seasoned broadcasters. If you need a small broadcast studio mixer, we believe that this is the best one you can buy.

David Boulton - Broadcast Radio





Download The User Guide

Download the SRM User Manual.

Download - File size: 1653KB

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