Manual

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.

LINE

SPEAKER

JUMPER

LINE INPUT

MIC INPUT

JUMPER

SWITCH

DOWN

OPERATING MODE

SELECTION

Specifications are subject to change without notice.

54-2202-01A 1107

SWITCH JUMPER

ADAPT HI-Z AUX INPUT TO 600Ω BALANCED INPUT LINE LINE 600Ω BAL INPUT* TO AUX LEVEL INPUT

ADAPT SPEAKER LEVEL TO HI-Z AUX INPUT SPK LINE TO SPEAKER LINE** TO AUX LEVEL INPUT

ADAPT LINE LEVEL TO MIC LEVEL INPUT LINE MIC TO LINE LEVEL SOURCE TO MIC LEVEL INPUT

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

SCREW TERMINALS RCA PLUG

SETTINGS

APPLICATION

Screw Terminal

Mode Select

RCA Plug

Mode Select

54-2202-01A_WMT1AS Manual:Layout 1 7/21/11 2:29 PM Page 1

PAGE 1
54-2202-01A_WMT1AS Manual:Layout 1 7/21/11 2:29 PM Page 1 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.
PAGE 2
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.