Windows Playback and RecordingPrograms that play back through your computers's speakers will play back through the RAD27 when you've set theSound control panel as above. Windows doesn't include a sound recording program, but Audacity is a free warebasic audio editor and recorder and is available for download.You can simultaneously playback and record with two programs open. For instance, you can play from iTunes intothe HAL system and record from the HAL system into Audacity.Discontinued RAD ModelsThe following RAD models are no longer in production. For the most current list of RAD models, see the Ranewebsite. Data Sheets for discontinued models may also be downloaded from the Rane website.RAD24This device adds the following additional capability to a HAL system:A RAD24 provides one audio output channel that is a one-watt plenum-rated class-D amplifier which directlydrives an 8-Ohm loudspeaker. It installs in a U.S. 4-square gang box, or the flanges can be removed and the RADcan be mounted to a ceiling loudspeaker's 70/100 mounting holes (replacing the transformer) or to another flat sur-face.Digital Remote DevicesThe Halogen software gives you microscopic control over almost every aspect of your audio system. This detailedcontrol is great for the system designer, but not so great for end users who simply want to turn up the volume. Thelast thing they want to do is open a software program! Digital Remote (DR) hardware devices, a variety of whichare available for your HAL System, provide system users with easy control of volume, audio selection, preset acti-vation, and more—out in the locations where the control is needed.CHAPTER 2: Hardware Component Details43