SSP 7.1

Surround Sound Processor
Key Features
  • Supports Dolby® and DTS® source formats and listening modes as well as PCM and analog audio
  • Automatic surround sound format detection and decoding
  • Seven channel, nine-band parametric EQ
  • Live and Emulate operation modes with configuration file saving
  • Up to 100 ms lip sync adjustment on each input
  • Front panel analog input level adjustment with LED level and clip indication
The Extron SSP 7.1
Model Version Description Part #
SSP 7.1 Surround Sound Processor 60-842-01

The Extron SSP 7.1 five input Surround Sound Processor provides up to eight channels of surround sound for pro AV applications in corporate and commercial environments. The SSP 7.1 automatically detects and decodes audio content in various Dolby® and DTS® formats from DVD, Blu-ray Disc, and HDTV broadcasts. It also offers Dolby Pro Logic II/IIx and DTS Neo:6® processing to provide surround sound from two-channel stereo. The SSP 7.1 features coaxial and optical digital inputs, plus an analog balanced/unbalanced two-channel input. It is designed for integration into pro AV installations, with a compact, rack-mountable metal enclosure, RS-232 serial control, and balanced/unbalanced line level outputs. The included control software offers a user-friendly GUI for setup and operation.

The SSP 7.1 is designed for simple, intuitive operation from the front panel, with LED indicators for source selection, source format detection, listening mode override, and output volume level. At the touch of a button, the user can override the current surround sound output and switch to a different listening mode, for example, from 5.1 channel Dolby Digital to two-channel downmixed stereo, or from two-channel stereo to 7.1 channels via Dolby Pro Logic IIx. The user also has the option to send stereo audio to all left and right speakers without surround sound processing.

Control and Configuration

The SSP Setup and Control Software features an intuitive user interface for efficient setup and control of the SSP 7.1 as well as calibration of the sound system. Using the software, an integrator can specify the number and size of all speakers in the system, and enter the distance of each speaker from the central listening position, or location where acoustical measurements are taken. A nine-band parametric EQ is available for each of the satellite speaker channels to tailor the output signal to the acoustical environment.

Test Signals for Calibration

The SSP 7.1 generates test signals including Dolby noise and full-bandwidth pink noise that can be routed sequentially to each speaker, or directed selectively to any speaker using the software. Dolby noise is a band-limited pink noise that allows for higher sound pressure levels, which is advantageous when calibrating speaker outputs to equal SPLs. An individual trim level is provided for each channel to facilitate calibration. The pink noise test signals can be used to calibrate a speaker’s interaction with the acoustical environment. The SSP 7.1 also offers the option to use an external source for test signals, which can then be directed to any speaker, or all speakers in sequence.

Designed for Pro AV Integration

The SSP 7.1 is housed in a 1U, half rack width enclosure that is rack-mountable and occupies a fraction of the space required for a conventional surround sound receiver. It can be controlled and configured using RS-232 serial control. For compatibility with pro AV sound equipment, the SSP 7.1 offers balanced or unbalanced inputs and outputs. Front panel controls can be locked out to prevent unauthorized operation.


Note: Dolby and the double-D symbol are trademarks of Dolby Laboratories. DTS is a registered trademark & the DTS logos and Symbol are trademarks of DTS, Inc.

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SSP 7.1
   Gain Unbalanced output: -6 dB; balanced output: 0 dB, when volume is set to 0 dB gain.
   Frequency response 20 Hz to 20 kHz, ±0.2 dB
   Subwoofer frequency response 4 Hz to 250 Hz, ±3 dB
   THD + Noise <0.03% @ 1 kHz, at maximum output level
   S/N >100 dB, 20 Hz to 20 kHz, unweighted
   Stereo channel separation Analog input only: >90 dB @ 1 kHz
   CMRR Analog input only: >75 dB (typical) @ 1 kHz
   Bass adjustment ±10 dB @ 90 Hz
   Treble adjustment ±10 dB @ 7500 Hz
   Volume control - 100 dB to 0 dB
   Bass management crossover frequencies 40 Hz to 250 Hz
Audio input — analog
   Number/signal type 1 analog stereo/mono, balanced/unbalanced
   Listening modes Stereo, stereo to all, mono, mono to all, Dolby® Pro Logic®, Dolby Pro Logic II Movie/Music, Dolby Pro Logic IIx Movie/Music, DTS Neo:6 Cinema/Music
   Connector (1) 3.5 mm captive screw connector, 5 pole
   Impedance >10k ohms balanced/unbalanced, DC coupled
   Nominal level +4 dBu (1.23 Vrms) balanced or -10 dBV (316 mVrms) unbalanced
   Maximum level +21 dBu (balanced/unbalanced)
   Input gain adjustment 0 dB to +24 dB (default = 0 dB), adjustable via RS-232 or front panel
    NOTE     0 dBu = 0.775 Vrms, 0 dBV = 1 Vrms, 0 dBV ≈ 2 dBu
Audio input — digital
   Number/signal type 4 S/PDIF (2 optical, 2 coaxial)
   Source formats PCM, Dolby Digital 2/0, Dolby Digital 2/0 Surround, Dolby Digital 5.1, Dolby Digital Surround EX, DTS 2‑channel, DTS Digital Surround, DTS‑ES Matrix 6.1, DTS‑ES Discrete 6.1, DTS 96/24, DTS 96/24 ES Matrix 6.1
   Listening modes Stereo, stereo to all, mono, mono to all, Dolby Digital 5.1, Dolby Digital EX, Dolby Pro Logic, Dolby Pro Logic II Movie/Music, Dolby Pro Logic IIx Movie/Music, Dolby Digital Pro Logic Movie/Music, DTS, DTS 96/24, DTS-ES Matrix, DTS 96/24 ES Matrix, DTS-ES Discrete, DTS Neo:6 Cinema/Music, DTS + Dolby EX, DTS 96/24 + Dolby EX, DTS + Dolby Pro Logic IIx Movie/Music, DTS 96/24 + Dolby Pro Logic IIx Movie/Music
   Connectors 2 TOSLINK fiber optic connectors
2 RCA jacks
Audio output
   Number/signal type 8 balanced/unbalanced, for left and right front, left and right sides, left and right back, center, and subwoofer output
   Connectors (3) 3.5 mm captive screw connectors, 6 pole
(2) 3.5 mm captive screw connectors, 3 pole
   Impedance 50 ohms unbalanced, 100 ohms balanced
   Gain error ±0.2 dB channel to channel
   Maximum level (Hi-Z) >+21 dBu balanced or >+15 dBu unbalanced at 0.03% THD+N
   Output level range per channel -24 dB to + 12 dB
   D/A conversion 24 bit, 96 kHz
Control/remote — audio processor
   Serial host control port 1 bidirectional RS-232 front panel 2.5 mm mini stereo jack
1 bidirectional RS-232 rear panel 3.5 mm captive screw connector, 3 pole
   Baud rate and protocol 9600, 19200, 38400 (default), 115200 baud (adjustable); 8 data bits, 1 stop bit, no parity
   Pin configurations Mini stereo jack: tip = Tx, ring = Rx, sleeve = GND
Captive screw connector: pin 1 = Tx, 2 = Rx, 3 = GND
   Program control Extron control/configuration program for Windows®
Extron Simple Instruction Set (SIS)
   Power 100 VAC to 240 VAC, 50-60 Hz, 12 watts, internal
   Temperature/humidity Storage: -40 to +158 °F (-40 to +70 °C) / 10% to 90%, noncondensing
Operating: +32 to +122 °F (0 to +50 °C) / 10% to 90%, noncondensing
   Cooling Convection, no vents
      Rack mount Yes, with optional 1U rack shelf
      Furniture mount Yes, with optional under-desk mounting kit
   Enclosure type Metal
   Enclosure dimensions 1.7" H x 8.75" W x 6.0" D (1U high, half rack wide)
(4.3 cm H x 22.2 cm W x 15.2 cm D)
(Depth excludes connectors and knob.)
   Product weight 1.3 lbs (0.6 kg)
   Shipping weight 3 lbs (2 kg)
   Vibration ISTA 1A in carton (International Safe Transit Association)
   Regulatory compliance 
      Safety CE, c-UL, UL
      EMI/EMC CE, C-tick, FCC Class B, ICES, VCCI
      Environmental Complies with the appropriate requirements of RoHS and WEEE.
   Product warranty 3 years parts and labor
   Everlast power supply warranty 7 years parts and labor
    NOTE     All nominal levels are at ±10%.
    NOTE     Specifications are subject to change without notice.
Shipping Dimensions and Weights
    Part # Height Width Depth Weight
    60-842-01 5.0" (12.7 cm) 14.0" (35.6 cm) 11.25" (28.6 cm) 2.64 lbs (1.2 kg)


Application Diagram

Panel Drawing

Panel Drawing
© 2020 Extron. Specifications are subject to change without notice.