Transcript
54-2202-01A_WMT1AS Manual:Layout 1
7/21/11
2:29 PM
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Line Input / Line Output Matching Transformer Model WMT1AS The WMT1AS is a balanced and isolated impedance matching transformer with additional features that allow adapting of signal levels between various audio source and input types. Typical uses are to provide a 600-ohm balanced input adapter for unbalanced AUX inputs. WMT1AS can also be used to drive long, balanced, twisted pair cable. This improves noise rejection and the maximum run length. The WMT1AS can adapt speaker level signals (25V/70V systems) to a level suitable for the AUX input of an amplifier, adapt line-level signals down to levels suitable for MIC inputs and can adapt speaker level signals to MIC level as well. See the drawing below for setting the Operating Modes. APPLICATION
SETTINGS
SCREW TERMINALS
RCA PLUG
LINE
600Ω BAL INPUT*
TO AUX LEVEL INPUT
LINE
TO SPEAKER LINE**
TO AUX LEVEL INPUT
MIC
TO LINE LEVEL SOURCE
TO MIC LEVEL INPUT
SWITCH
JUMPER
ADAPT HI-Z AUX INPUT TO 600Ω BALANCED INPUT
LINE
ADAPT SPEAKER LEVEL TO HI-Z AUX INPUT
SPK
ADAPT LINE LEVEL TO MIC LEVEL INPUT
LINE
ADAPT SPEAKER LEVEL TO MIC LEVEL INPUT
SPK
MIC
TO SPEAKER LINE**
TO MIC LEVEL INPUT
DRIVE 600Ω BALANCED LINE
LINE
LINE
TO 600Ω BALANCED LINE
FROM DRIVE SOURCE
* SHIELD CAN BE CONNECTED TO CENTER TAP, MIDDLE SCREW **70V OR 25V SPEAKER SYSTEMS
LINE
SPEAKER SWITCH DOWN
OPERATING MODE SELECTION
SWITCH UP
PIN
Screw Terminal Mode Select
JUMPER
RCA Plug Mode Select JUMPER
Specifications are subject to change without notice. ©2010 Bogen Communications, Inc. 54-2202-01A 1107
PIN
LINE INPUT MIC INPUT
54-2202-01A_WMT1AS Manual:Layout 1
7/21/11
2:29 PM
Page 2
LINE SPK
AUX Level Signal to Amp Input
600
(Jumper in LINE Position.)
24kΩ 600Ω Input or Output (Switch in LINE Position.)
15kΩ CT
RCA PLUG
LINE MIC
25V/70V Speaker Connections
MIC Level Signal to MIC Input
(Switch in SPK Position.)
(Jumper in MIC Position. Use suitable adapter for MIC connector style.)
150Ω 600
24kΩ
TYPICAL PERFORMANCE SIGNAL FLOW
OPTION SETTINGS
NOMINAL IMPEDANCE
20 SW: LINE JMP: LINE
600Ω
10KΩ
SW: LINE JMP: LINE
600Ω
10KΩ
SW: SPK JMP: LINE
48KΩ
10KΩ
SW: LINE JMP: MIC
600Ω
150Ω
SW: SPK JMP: MIC
48KΩ
150Ω
VOLTAGE GAIN* (dBr)
10
0
-10
-20
-30
-60
-70 60
100
1K
* SOURCE IMP= 40Ω, LOAD IMP = 100KΩ
10K
20K
FREQUENCY (Hz)
L I M I T E D
W A R R A N T Y
The WMT1AS is warranted to be free from defects in material or workmanship for two (2) years from the date of sale to the original purchaser. This warranty does not extend to any of our products that have been subjected to abuse, misuse, improper storage, neglect, accident, improper installation or have been modified or repaired or altered in any manner whatsoever, or where the serial number or date code has been removed or defaced.
50 Spring Street, Ramsey, NJ USA Tel.: 201-934-8500 • Fax: 201-934-9832 • www.bogen.com
