38 x 38 AV Matrix Switch with full DSP audio

                          Accepts Any Remote Control or RS-232

Back panel image          Back panel diagram

CMX3838A2 is not your average audio switch.  With over 1 TeraMACs DSP performance, it can process up to 38 audio streams simlultaneously.  CMX3838A2 features full DSP audio on all signal types (analog, digital coax, digital optical).  This includes industry leading features such as audio delay for lip sync correction, analog to digital conversion, input gain, output volume, treble/bass control, and balance.  Everything is performed using the highest quality DSP algorithms yielding CD quality sound or better on all outputs.

The entire CMX A2 product line offers unmatched upgrade capability. 

• Programmable DSP architecture allows for new functionality to be added via firmware upgrades
• Available in 16x16 and 38x38 models.
• Full 32x32 analog audio switching option using two 38x38 switches

The CMX3838A2 has the following features

1. 38 audio input sets, each includes the following
• Digital audio Coax / RCA (16 inputs)
• Digital audio TOSLINK / Optical (6 inputs)
• Analog audio R/L (16 inputs)
2. 38 independently controllable audio output sets, each includes the following
• Digital audio Coax / RCA (16 outputs)
• Digital audio TOSLINK / Optical (6 outputs)
• Analog audio R/L (16 outputs)
3. 8 composite video inputs and outputs with full matrix routing
4. Full 256 step volume control on all audio outputs
5. 256 step volume equalization on all audio inputs
6. Programmable balance control on all audio outputs
7. Programmable bass & treble control on all audio outputs
8. Programmable audio delay for lip sync correction on all audio inputs
9. Programmable audio delay for lip sync correction on all audio outputs
10. Real time audio delay adjustment for optimized AV sync
11. Automatic signal activity detection
12. Analog to digital audio upconversion
13. Digital to analog audio downconversion (PCM audio)
14. Flash memory backup of all device settings and presets
15. Remote IR control with Zerokey code learning ability
16. RS-232 input for serial control
17. Flash based micro controller and DSP which allows firmware updates over the RS-232 port
18. Professional quality video amps capable of driving cables up to 300'
19. Steel rack mountable case
20. Optional rack mounting ears

CMX3838A2 can be controlled by several methods, you can choose the one the best fits your home theater control scheme.

1. Manual control using the front panel buttons
2. IR control using a programmable remote.  You can download the Pronto codes needed  here.  The raw Hex format is here.
3. IR control using your standard remote.  Zerokey can learn any remote keys to control CMX3838A2
4. RS-232 control with a PC or your existing home theater controller.  RS-232 programming guide here

Supported by:

Intelligent audio switching

CMX3838A2 automatically solves all the headaches of dealing with multiple audio formats.  Our real time algorithms detect audio activity and format on the fly, automatically adjusting your output to always give you the best signal possible. 

Audio delay control

Audio video delay mismatch is the single largest problem in today's home theaters.  Scientific studies have shown that even slight mismatches cause major viewer dissatisfaction and annoyance.  In fact, the majority of viewers preferred watching 480p material with correct AV sync verser 1080p material with a small offset.  You can make your home theaters stand out from the competition by correcting this with the CMX3838A2!

Where does audio video delay mismatch come from?  In todays digitally processed video environment there are many sources.

• TV signal processing:  Your digital TVs all have delay, and this keeps growing.  The TV speakers will normally be delay matched for this, but your in wall sound will not be!

• Signal distribution:  While component video has no detectable delay, digital transmission does.  Each method varies.

• Source material:  The editing methods used to create the digital source material do not always use proper methods to align the video and audio streams.  This is very common.

• Source equipment:  Cable and satillite boxes often have firmware or design issues that create static mismatches.

We can show you how to use CMX3838A2 to correct all of these and provide the perfect video and audio environment.

Audio volume control

The CMX3838A2 integrates fully independent input and output volume adjustments on all audio channels using the best quality digital signal processing.  Why is this important? 

The input volume control allows you to equalize the volume from all sources to a common level.  Many satellite boxes output volume levels below nominal, so without this feature you would need to adjust the volume manually every time you switch between Cable/DVD to satellite.  After equalization, all your sources will have the same volume level. 

The output volume control is mainly used for two types of applications.  The first is to control the volume on your TV speakers from the centralized system.  It eliminates the need to use the TV remote to control volume.  The second application is for in wall/ceiling speakers.  Since volume control is built into the CMX, you can use inexpensive and high quality fixed gain multichannel power amplifiers to drive your speakers.  Not only does this simplify control, but it will save you several hundred dollars on the total solution.  Please contact sales for details on recommended fixed gain amps.

ZeroKey technology

The remote control interface can use ZeroKey infrared code cloning to map any remote control key to each of the inputs & outputs.   ZeroKey technology is compatible with virtually all remote controls, and does not interfere with the normal operation of the remote.  Please see our quick start guide for a description of how to program for an IR remote using ZeroKey.

ZeroKey programming is stored in flash memory, and you will not need to reprogram even if you lose power.  If you buy a new remote in the future, don't worry, the CMX3838A2 can be reprogrammed as much as you like.

Upgradeable firmware

CMX3838A2 supports firmware updates over the RS-232 port.  Future updates will add enhanced control and processing features.  Follow this link for more information.

Unit includes:

• CMX3838A2 AV matrix switch with 3 year warranty
• 12V DC desktop power supply with 30 day warranty
• Optional Ethernet controller with 1 year warranty

• 8 High bandwidth analog inputs  (used for composite video)
      75Ohm terminated at all frequencies
      Gold plated matched low impedance RCA jacks
      1Vpp nominal input swing (Ypbpr) or 1.3Vpp (Cvbs)   4Vpp maximum  (DC invariant)
      DC rejection via capacitive coupling
      Crosstalk < -80 dB
• 8 High bandwidth analog outputs  (used for composite video)
     Source impedance 75 Ohms
     Gold plated matched low impedance RCA jacks
     All output sets individually controllable/switchable
     High performance amplifier capable of driving over 300ft of coax cable per output
     2V/V gain to properly drive output load termination (zero effective gain at display)
     -3dB bandwidth > 100 Mhz
• 32 Analog audio inputs (16 stereo)
      10KOhm terminated at all frequencies
      Gold plated matched low impedance RCA jacks
      2.6Vpp nominal input swing   4Vpp maximum  (DC invariant)
      DC rejection via capacitive coupling
      256 step programmable input volume equalization
     Automatic input activity detection and clasification
     -500 to +500ms programmable audio delay in 256 steps
     Analog to digital upconversion
      Crosstalk < -110 dB
• 32 Analog audio outputs (16 stereo)
     Source impedance 75 Ohms
     Gold plated matched low impedance RCA jacks
     All output sets individually controllable/switchable
     High performance amplifier capable of driving over 300ft of coax cable per output
     256 step programmable volume control
     256 step programmable bass control
     256 step programmable treble control
     0 to +1000ms programmable audio delay in 256 steps
     THD+N < 0.0004%
• 6 Optical Digital audio inputs + 6 Optical Digital audio outputs
     Optical digital audio inputs have built in shutters, no plugs needed
     256 step programmable bass control
     256 step programmable treble control
     Automatic input activity detection and clasification
     -500 to +500ms programmable audio delay in 256 steps
     Digital to analog downconversion (PCM audio)
     All outputs individually controllable/switchable
• 16 Coax Digital audio inputs + 16 Coax Digital audio outputs
     Gold plated matched low impedance RCA jacks
     AC coupled to protect all connected equipment
     Capable of driving over 300ft of coax cables
     256 step programmable bass control
     256 step programmable treble control
     -500 to +1000ms programmable audio delay in 256 steps
     Digital to analog downconversion (PCM audio)
     All outputs individually controllable/switchable
• IR receiver (front)
• RS-232 control input (DB9 female)
• Optional Ethernet controller provides Ethernet control with FREE Control4 and RTI driver
• Internal design
      Flash programmable micro controller enables ZeroKey remote technology
      Flash programmable DSP enables flexible high quality audio processing
      Ultra wide bandwidth integrated buffered t-switch matrix prevents crosstalk or signal distortion
      Independent professional quality video amplifiers for best performance
      High reliability capacitors and self resetting fuse protection for long life
      Designed and manufactured in the USA
  
• Housing
      Black steel rack mountable housing   17" x 13" x 3.5"   (2 RU)

Online manual (pdf document)    Quick setup guide (word document)    RS232 Programming Guide

IR remote programming guide

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