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SPA-400 and SPA-600 Four and Six Place Intercoms

  • FAA TSO approved.
  • Pilot fail safe feature allows pilot to always hear radios.
  • Works with all brands of General Aviation headsets.
  • Reversible face plate included for vertical or horizontal mounting.
  • Radio priority assures that ATC hears only the crew member transmitting.
  • Installation hardware included, including jack kit and pre-wired harness.
  • WARRANTY: Five years parts and labor.
SPA-400 Intercom

The Intercom That Set The Standard
Sigtronics pioneered the voice activated intercom market in 1974 and continues to deliver value and performance today in the 4 or 6 place FAA TSO approved SPA-400 / SPA-600 intercom series. With fail safe features that allow pilots to always hear the radio even if the intercom is off, and radio priority that assures ATC only hears the crew member transmitting, the SPA intercom series is the standard by which all others are judged.

Individual Mic Bias Allows The Use of Different Brands of Headsets
General aviation headset microphones draw power from the intercom or radio mic line. Some poorly designed intercom systems hook all the headsets to one mic line so that all the headsets must share the same power. Because different headsets have different power requirements, one headset may draw just enough power to work but there may not be enough power left over for any of the other headsets to function. With this type of design two identical headsets will work most of the time but get different types and models then you will have a problem. The only way to fix this is to modify or replace the intercom system with one that uses separate mic input lines. All Sigtronics intercom systems use separate mic input lines and do not have this problem.

Compact Size
Choose either rectangular (horizontal or vertical) or circular faceplate mounting configuration to fit anywhere in the cockpit. With a compact 2.5" x 1" sized panel, the SPA system will easily fit in the tightest panels. All installation hardware including jack kit and pre-wired harness are included.

High Noise Environment N Series
The SPA-400N / SPA-600N FAA TSO approved High Noise Environment Intercom Series is designed specifically for experimental, ultralights, warbirds, helicopters, and other high noise aircraft. Push to intercom as well as voice activated intercom is available as desired. Tested by Sigtronics at ambient noise levels of between 115-120 decibels, the SPA-400N / SPA-600N outperformed all other intercoms on the market, panel mounted as well as portable.

                 
Features   SPA-400   SPA-400N   SPA-600   SPA-600N
Headset Positions:   4   4   6   6
High Noise:   No   Yes   No   Yes
Size:   4" x 2.5" x 1"   4" x 2.5" x 1"   4" x 2.5" x 1"   4" x 2.5" x 1"
Weight Unit:   4.5 oz.   4.5 oz.   4.5 oz.   4.5 oz.
Weight Jacks/Harness:   5.5 oz.   5.5 oz.   5.5 oz.   5.5 oz.
Warranty:   5 Years   5 Years   5 Years   5 Years
Price:   $216.00   $237.00   $252.00   $288.00
                 
 

SPA Faceplate

Adapts all SPA Intercoms to standard 2.25 inch round instrument hole.
Part Number: 900068
Price: $10.00

Sigtronics SPA Intercom faceplate

RES-401 / RES-601 Stereo Retrofit System

Full Stereo and Crew Isolate
Add full stereo capability and crew isolate to your existing SPA-400 / SPA-600 intercom installation with our RES-401 / RES-601 stereo retrofit systems. The RES system does not require removal of your existing intercom installation. The RES accepts input from a CD player, cassette player, AM / FM stereo receiver or Walkman. Music is muted when VHF / Comm is transmitting or receiving or when speaking on the intercom. Passengers can also be put on uninterrupted music if they desire.

Sigtronics RES-401 Stereo Intercom
         
Features   RES-401 Stereo Conversion   RES-601 Stereo Conversion
Headset Positions:   4   6
Size:   4" x 2.9" x 2"   4" x 2.9" x 2"
RES Unit Weight:   9.8 oz.   9.8 oz.
Warranty:   5 Years   5 Years
Price:   $129.00   $144.00
         
 
SPA-400 / SPA-400N PDF Instructions
Installation and Operating Instructions
Model: SPA-400
Panel Mount Intercom, Standard 4 Place.
Installation and Operating Instructions
Model: SPA-400N
Panel Mount Intercom, 4 Place High Noise Version.
Comm Radio Transmit
Models: SPA-400 and SPA-400N
Comm Radio Transmit Trouble-Shooting Guide
Helpful Hints
Model: SPA-400N
Helpful Hints for Communicating in Unusually High Noise Environments.
SPA Panel Template
Models: SCI, SDB, SPA, and Sport 200
Panel Templates for intercoms.
Figure 4 installation drawing modification for specified audio panels, radios, and jacks.
Audio Panel: King KA 134 Audio Panel
Audio Panel: King KMA 20 Audio Panel
Audio Panel: King KMA 24 Audio Panel
AUX Audio: Auxiliary Audio Input
Headset Jacks: U-174/U
Radio: Apollo SL-40
Radio: Becker AR 3201
Radio: Becker AR 4201
Radio: Com 120
Radio: Flightline FL-760
Radio: Funkwerk ATR833
Radio: Garmin GTR 225
Radio: Garmin GNC250/XL
Radios: ICOM A-200 and A-210
Radios: ICOM A20 and A21
Radios: ICOM A3, A6, A15, A22, and A24
Radio: King KY 97A
Radio: King KY 197A
Radio: MGL V6
Radio: Microair 760
Radio: Narco COM 810
Radio: Narco COM 810+
Radio: Narco MK12D
Radio: Sporty's SP-400
Radio: VAL Com 760
Radio: VAL Com 2000
Radio: Yaesu FTA-550
 
SPA-600 / SPA-600N PDF Instructions
Installation and Operating Instructions
Model: SPA-600
Panel Mount Intercom, Standard 6 Place.
Installation and Operating Instructions
Model: SPA-600N
Panel Mount Intercom, 6 Place High Noise Version.
Comm Radio Transmit
Models: SPA-600 and SPA-600N
Comm Radio Transmit Trouble-Shooting Guide
Helpful Hints
Model: SPA-600N
Helpful Hints for Communicating in Unusually High Noise Environments.
SPA Panel Template
Models: SCI, SDB, SPA, and Sport 200
Panel Templates for intercoms.
Figure 4 installation drawing modification for specified audio panels, radios, and jacks.
Headset Jacks SPA-600: U-174/U
Headset Jacks SPA-600N: U-174/U
 
RES-401 / RES-601 PDF Instructions
Installation Instructions
Models: RES-401 and RES-601
Remote Stereo Music Switcher for SPA-400 / SPA-600 Intercoms.
Operating Instructions
Models: RES-401 and RES-601
Remote Stereo Music Switcher for SPA-400 / SPA-600 Intercoms.

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