XLR OUTPUT
Each ProAV2 channel outputs a balanced, 600 Ohm, mic-level signal that is
compatible with microphone snakes and mixing console preamps. The output
can drive long cables without appreciable noise or signal loss.
OPTIONAL J-RAK
The optional J-RAK is a high density 2RU
rack shelf for Radial DI’s and splitters that
allows up to 8 Radial devices to mount in one
neat 19" package. Ideal for studio or touring.
Constructed of 14 gauge steel with a baked
enamel fi nish.
OPTIONAL J-CLAMP
The optional J-CLAMP can mount a single
Radial device to virtually any surface. Perfect
for hiding away inside racks, on podiums or
under tables.
CONGRATULATIONS
on your purchase of the Radial ProAV2. Radial products are easy to use and
this short manual contains all the information you need to start using your
ProAV2 right away. For more information on the ProAV2, and other Radial
products, visit our website, www.radialeng.com.
OVERVIEW
The Radial ProAV2 is a two channel passive direct box. This innovative DI
features a ‘Swiss army knife’ of input options making it the perfect DI for
professional AV integrators and rental companies that regularly deal with a
variety of system interface problems.
The Radial ProAV2 is equipped with standard ¼" instrument inputs for each
channel making it easy to connect stereo instruments or two mono ones.
Stereo RCA and 3.5mm jacks allow for easy connections from consumer
-10dB audio devices, like MP3 and CD players, to microphone snakes.
At the heart of the ProAV2 are two custom Radial transformers that convert
the high impedance inputs to a balanced low impedance signal while isolating
noise caused by ground loops. Constructed with a two piece 14 gauge steel
enclosure the ProAV2 is well suited for years of touring and rental use. Enjoy!
CONNECTING THE ProAV2
Before connecting the ProAV2 make sure the sound system is turned off and
all levels are set to zero. This will avoid any pops in the sound system that
could damage loudspeakers. Also confi rm that the GROUND, PAD and LIFT
buttons are in their “out” positions. The ProAV2 is passive and does not require
any power whatsoever to work. Phantom power will not damage the ProAV2
if applied.
ProAV2 BLOCK DIAGRAM
Follow the block diagram from the inputs on the left to the outputs on the right. A
really cool feature with the ProAV2 is all the input jacks are paralleled together
in stereo. This makes any hi-Z jack a handy patch point. For example, a CD
player may be connected to the RCA jacks and the signal sent to a computer
sound card via the 3.5mm jack in addition to the balanced XLR outputs.
¼" INSTRUMENT JACKS
Stereo devices like keyboards and drum machines connect to the left and right
¼" jacks. Mono musical instruments may be connected to one channel using
either ¼" input and the like XLR ouput.
ProAV2 User Guide
Radial Engineering Ltd.
ProAV2 User Guide ProAV2 User Guide
Radial Engineering Ltd.Radial Engineering Ltd.
GROUNDING OPTIONS
To make grounding as fl exible as possible and eliminate noise caused by
ground loops, the ProAV2 features two ground lift functions. The fi rst, labeled
GROUND, is located on the output panel with the XLR connectors. It is a
global ground lift intended for stereo applications and will disconnect pin-1 on
both XLR outputs.
RCA & 3.5mm JACKS
Stereo consumer electronics like CD and MP3 players connect directly to the
ProAV2 without cumbersome adaptors using the stereo RCA and 3.5mm jacks.
The second ground lift is simply labeled LIFT and is located on the input panel.
This switch allows the right channel ground to be lifted separately from the left
channel and is intended for dual mono applications where one source device
needs a ground path through the ProAV2 while the other may not. Note that the
GROUND switch supersedes the LIFT switch and disconnects the ground path
for both channels regardless of the position of the LIFT switch.
-15dB PAD
The ProAV2 is equipped with a -15dB input PAD to prevent overload distortion
when interfacing high output devices like CD players. The PAD reduces the
input level going to the left and right transformers.
TRANSFORMER ISOLATION
The ProAV2 transformers convert the hi-Z inputs to balanced, low-Z, mic-level
outputs. A major benefi t of using transformers for signal conversion is the
isolation the transformer provides. Transformer isolation eff ectively blocks hum
and buzz caused by ground loops by preventing the fl ow of stray DC current
between the input ground and output ground.
Radial transformers are custom manufactured for optimum signal transfer,
minimal insertion loss and fl at frequency response. They are exceptional
for their ability to handle high input levels with very low harmonic and phase
distortion. To make the ProAV2 as quiet as possible, we sealed the transformer
inside a can made of mu-metal. Mu-metal is known for its ability to block
electromagnetic interference.
Stereo
¼" Left
¼" Right
GROUND
disconnects pin-1 on both XLRs
LIFT
disconnects right channel ground
RCA Left & Right
3.5mm Left & Right
Stereo
To Next Page
Loading...
Need help?
General
