TOA Electronics U-13R - Unbalanced Line Input Module with High/Low Cut Filters and Mute-Receive for 900 Series (Dual RCA) - Manual (Page 13)

B-11
B-21
B-21S Balanced Line Input with Remote Volume Control
B-11S Balanced Line Input with Mute-Receive
• For Balanced Or Unbalanced Line Level Sources such
as mixer outputs, signal processors and wireless
microphone receivers.
• Transformer Isolation (10 k
Ω
) minimizes ground loop
problems when connecting remote equipment (greater than
15 feet).
• Remote Volume Control by connecting an external 10
k
Ω
, linear-taper potentiometer to screw terminals #4 and
#5.
Note: Control line resistance greater than 200
Ω
will
prevent full attenuation (200
Ω
= 3821 ft. of #24 AWG
wire).
• Tip! You can also connect a switch between screw
terminals #4 and #5 for remote on/off operation. Closing
the switch turns the module OFF, opening the switch turns
the module ON.
• Connector: screw terminal (B-21S).
Faceplate Controls Gain, terminals for 10 kohm linear-taper pot.
Input Impedance 10 kohms, balanced transformer-isolated
Sensitivity -16 ~ +14 dBu
Gain -32 ~ -2 dB
CONNECTOR DIAGRAM
SPECIFICATIONS
BLOCK DIAGRAM
• For Balanced Or Unbalanced Line Level Sources such
as mixer outputs, signal processors and wireless
microphone receivers.
• Transformer Isolation minimizes ground loop problems
when connecting remote equipment (greater than 15 feet).
• Responds To Mute Bus Activation , via Mute SEND
module or switch-closure.
• Responds To Both Mute Bus # 1 And Mute Bus # 2 By
Default
(cut diode(s) to disconnect individual mute bus).
• Connector: removable terminal block (B-11S).
PCB Controls Mute bus selection
Input Impedance 10 kohms, balanced transformer-isolated
Sensitivity -16 dBu
Gain -1 dB
CONNECTOR DIAGRAM
SPECIFICATIONS
BLOCK DIAGRAM
LINE INPUT MODULES: BALANCED PAGE 14
B-11S (old style) B-11S (new style)
B-11S (Balanced/Unbalanced*) (old style)
B-21S
B-21S (Balanced/Unbalanced*)
* For unbalanced sources, use a shielded, twisted pair and
connect the output to Hot and Common (inner conductors).
Connect the shield to Earth at the module and leave
unterminated (floating) at the source.
* For unbalanced sources, use a shielded, twisted pair and
connect the output to Hot and Common (inner conductors).
Connect the shield to Earth at the module and leave
unterminated (floating) at the source.
B-11S (Balanced/Unbalanced*) (new style)