Whirlwind DA-2 user manual

Summary of the content on the page No. 1

INTRODUCTION UNPACKING

Thank you for selecting the US Audio DA-2. The DA-2 is a US Audio has made every effort to ensure that your
2- channel, line-level, audio signal distribution amplifier. equipment is received in the same perfect condition it was
Each channel provides four electronically balanced XLR in when it left the factory. Please inspect your product for
outputs with individual volume controls. The audio any signs of damage during shipping and report them to
performance is of

Summary of the content on the page No. 2

Block Diagram: The DA-2 can be configured as a 2 by 4 or a I by 8 distribution amp through the combine circuit. THEORY OF OPERATION The U.S. Audio DA-2 is a dual channel line-level audio distribution applications. Along with great audio distribution amplifier with four outputs per channel. All quality, the DA-2 features a high degree of isolation inputs and outputs are active electronically balanced between channels, as well as immunity to RF and circuits accessed through XLR connect

Summary of the content on the page No. 3

CONTROLS AND CONNECTIONS 1. Output Volume Pots control the level at the 7. Power Switch connects AC to the transformer primary corresponding rear panel output XLR. Each of the controls and the LED indicates that the unit is working. Both sides has a gain range of -60dB attenuation at full off to + 18dB of the AC line are switched and a mains fuse is located on of gain at full on. the circuit board inside the unit. 8. Output XLR5 on the DA-2 are actively balanced with 2. Individual Cli

Summary of the content on the page No. 4

SPECIFICATIONS Frequency response ± .3dBm 20 to 20KHz Added noise of dual +2dBm ± 3dBm 3 to 140KHz channel mode Input impedance 1Meg Ohm balanced C.M.R. of inputs 20-20kHz >9OdBm Max. input level +23dBm unbalanced Range of headphone -60 to +l8dBm +28dBm balanced volume control Output impedance 112 Ohm balanced, ground Isolation between outputs >74dBm lifted Power Consumption .15 Amps max. A.C. Max. output level +22dBm unbalanced @120VAC +28dBm balanced