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AV1B
AUDIO/VIDEO INTERFACE
APPLICATION INFORMATION
BALANCED OR UNBALANCED
LINE- LEVEL SIGNAL SOURCE
COMPUTER
CASSETTE PLAYER
CD/DVD/DAT
SUBMIXER
CASSETTE PLAYER
CD/DVD/DAT
MICROPHONE CABLE
PATCH CABLE (Balanced/Unbalanced)
SIGNAL PATH
(Balanced)
SUBMIXER
1/4” 6.3mm
PHONE PLUG
1/4” 6.3mm
STEREO
PHONE PLUG
Audio/Video Interface
3.5mm
STEREO MINI
2 RCAs
MIC INPUT OF MIXING CONSOLE
XLR FEMALE
BACK OF UNIT
FRONT OF UNIT
CONTROLS:
STEREO & LINE LEVEL INPUTS:
All inputs are parallel and resistively mixed to monaural. 1/4”
3-conductor phone jack accepts signals from balanced or
unbalanced line-level sources such as audio and video tape
recorders. Two RCA phono jacks and one stereo mini jack, for
signals from nominal -10 dBV sources such as radio, cassette,
computer or DVD outputs. Input impedance: approx. 4 kohm.
MIC LEVEL OUTPUT:
3-pin XLR-type connector provides oating transformerisolated low-impedance output to feed suitable mixer or PA
amplier input. Recommended load impedance: 1.0 kohm.
Pro Co Sound
225 Parsons Street | Kalamazoo, MI 49007
800-253-7360
LINE OUTPUT:
1/4” (6.3mm) phone jack takes signal after PAD (“up” position
= pad “in”) switch and provides unbalanced line-level source
to feed suitable inputs of tape recorders, CDs, DVDs, sound
systems, etc. Recommended load impedance: 100 kohm.
GND/LIFT:
Ground-lift switch used to reduce hum and buzz by
eliminating ground loops and providing proper grounding
for various conditions. Breaks connection between input and
output shields.
20dB PAD:
Activating the switch (switch in the up position) will attenuate
the input signal by @20dB. Deactivating the switch (switch in
the down position) removes the attenuation.
» www.procosound.com
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APPLICATION INFORMATION
NOTES:
1. Line In level is nominally -10dBV (300 mV). Use of two jacks for
resistive mixing of two low impedance sources will cause 6 dB of
signal loss (In addition to the transformer step-down/insertion
loss).
2. Gound lift (GND/LIFT) is typically used when connecting sources
with 3-wire grounded AC line cords, assuming that the PA
system is properly grounded. For safety reasons all equipment
with 3-wire AC line cords should be connected to properly
grounded receptacles. Note that GND/LIFT switch does not
aect LINE OUTPUT as it is an independent circuit.
CIRCUIT DIAGRAM:
PRO CO MODEL: AV1B DIMENSIONS .............. 4.38” W x 4.88”D x 1.75”H
111.1mm W x 123.8mm D x 44.4mm H
WEIGHT ................................................. 1.00 lb/0.46 kg
SHIPPING WEIGHT.............................2.00 lb/0.92 kg
INPUTS
3.5mm
STEREO
1/4"
RCA L
RCA R
2.2k
T
R
T
R
PAD
PAD
2.2k
82k
ON
10k
OFF
ON
OFF
DBT-1 TRANSFORMER
YEL
ORN
BLK
WHT
(CAN)
T
MIC LEVEL OUT
GRY
RED
BRN
LIFT
GROUND
LINE LEVEL OUT
S (PIN 1)
H+ (PIN 2)
C- (PIN 3)
TOP VIEW
SIDE VIEW
FRONT VIEW
Other TradeTools™ Products from Pro Co
AVP1B Wallplate Format Audio/Video Interface Unit
AVP1VB Wallplate Format Audio/Video Interface Unit with Input Level Control
CB-1 Direct Box
DB1 Professional Direct Box
DB2 Professional Stereo Direct Box
DB4A Rackmount Quad Direct Box
DBA1 Professional Active Direct Box
HJ4P Professional Stereo headphone Junction Box
HJ6 Headphone Junction Box
iFace Portable Audio Player Interface
iGate Universal Audio Gateway
iPlate Wallplate Format Portable Audio Player Interface
iRack Rackmount Portable Audio Player Interface
IT1 Isolation Transformer Unit
IT4A Rackmount Quad Isolation Transformer Unit
IT8A Rackmount 8-ch. Isolation Transformer Unit
LS82 Rackmount 8-ch. 1:2 Line Level Splitter
Pro Co Sound
225 Parsons Street | Kalamazoo, MI 49007
800-253-7360
MC2 Microphone Combiner
MS2 1:2 Microphone Splitter
MS3 1:3 Microphone Splitter
MS42A Rackmount Quad 1:2 Microphone Splitter
MS43A Rackmount Quad 1:3 Microphone Splitter
MS82 Rackmount 8-ch. 1:2 Microphone Splitter
MS82P Rackmount 8-ch. 1:2 Phantom Power Microphone Splitter
MS83 Rackmount 8-ch. 1:3 Microphone Splitter
MS83P Rackmount 8-ch. 1:3 Phantom Power Microphone Splitter
Panic Button Microphone A/B Switch
Power Mute Selectable Microphone Muting Switch
Short Stop Microphone Muting Switch, Momentary
Sign O Microphone Muting Switch, Latching
SAS1 Sports Announcer’s Switch (Press-to-Talk)
SAS2 Sports Announcer’s Switch with 6” Gooseneck
SAS3 Sports Announcer’s Switch with wired 6” Gooseneck
. . . plus our full line of audio cabling, snakes!
» www.procosound.com
AV1B-02 Rev. 11/10
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