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Delta 44 Quick Start Guide 

 

   

The M-Audio Delta 44 is a high grade professional sound card.  When setup properly for use with the SDR-
1000, the results speak for themselves.  Unbelievably high dynamic range and crystal clear audio with this 
card when combined with the versatile SDR-1000 results in an ear pleasing experience that is out of this 
world.

 

  

This page is designed to help you setup your new Delta 44 sound card for use with the SDR-1000.  Below you 
will find a step-by-step guide (7 steps) along with tips for getting the fastest support.  If you have questions 
that are not addressed in this guide, the 

[Flexradio] Email Reflector

 and the 

Teamspeak Server

 are available 

for fast, friendly support.

 

  

CAUTION:

 It is extremely important to use the settings in the Delta Control Panel as described below in order 

not to damage the SDR-1000 hardware due to overdriving the audio.  Make sure the output is set to -10dBv 
as shown in the screenshots below.  The software will attempt to ensure this setting is in the right position on 
startup.

 

  

The OEM version of the Delta 44 that FlexRadio ships comes with three components: A PCI card, the 
"breakout" box, and a cable to connect the two.  We optionally provide the necessary cables to connect the 
sound card to the SDR-1000 (called Hosa Cable Set).

  

   
  

  

Step 1: Install the PCI card

  

While a complete discussion of installing PCI cards is outside the scope of this quick start guide, there are 
many resources available on the web just using a google search.  For more specific help, use the support 
methods mentioned above.  

 

PCI Card 

Summary of Contents for Digital Recording Interface Delta 44

Page 1: ...fast friendly support CAUTION It is extremely important to use the settings in the Delta Control Panel as described below in order not to damage the SDR 1000 hardware due to overdriving the audio Make sure the output is set to 10dBv as shown in the screenshots below The software will attempt to ensure this setting is in the right position on startup The OEM version of the Delta 44 that FlexRadio s...

Page 2: ...e breakout box to the SDR 1000 and your speakers If making your own cables note that the 1 8 tip connects to the odd numbered plugs while the 1 8 ring connects to the even numbered plugs If using the Hosa Cable Set from FlexRadio the double 1 4 cables connect to Outputs 1 4 and Inputs 1 2 The orange cables go to the even numbered plugs The single 1 4 Mic cable connects to Input 3 Breakout Box ...

Page 3: ...to Outputs 1 2 unless the speakers have a female 1 8 receptacle for the input The same is true for connecting a PC microphone rather than using the front panel connector When using the Delta 44 the plug marked SPKR on the back of the enclosure is not used For digital mode support see the VAC Setup and Use document on our Download page Here is a functional description of each input and output from ...

Page 4: ...f image rejection on the receiver In 3 10dBV nominal microphone digital mode input port For normal operation it should be connected to the jack on the back of the radio which is just ABOVE the words To Mic In The jack is a DIRECT connection to the front panel 4 pin microphone connector The wiring table can be seen in the Operating Manual in Chapter 3 Pinouts We have used this with a Heil Pro serie...

Page 5: ...Taskbar Icon Delta 44 Control Panel Monitor Mixer Tab Delta 44 Control Panel Patchbay Router Tab ...

Page 6: ...lta 44 owners use PowerSDR v1 6 1 or later Click the Setup menu to pull up the Setup Form and click on the Audio Tab Select the M Audio Delta 44 PCI from the Sound Card Selection combobox see the figure below Once selected click the Apply button and then click OK to close the Setup Form Delta 44 Control Panel Hardware Settings Tab PowerSDR Setup Form Audio Tab ...

Page 7: ...ol left middle until the voice peaks are right at 0dB on the multimeter figure below If you are unable to modulate to the 0dB point it may be necessary to use a hardware preamp to bring the input levels up for the Delta 44 This concludes the Delta 44 Quick Start Guide At this point you should be able to receive and transmit with the Delta 44 If you are still having problems please refer to the sup...

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