SCHEMATIC

5

DESCRIPTION

LINE INPUT: 1/4" TRS stereo jack for connection to a line level source such as a mixer monitor/auxiliary output, cassette player output, CD player output etc. ground lift: Header jumper for disconnecting chassis ground from pin 1 of the Mic Input and Mic Thru.

MIC THRU: XLR jack paralleled (hard-wired) to the MIC INPUT jack for pass-through to a mixer or other microphone level input device.

MIC INPUT: XLR balanced jack for connection to a condenser or dynamic micro- phone.

INSTRUMENT INPUT: 1/4" TRS stereo jack for connection to an instrument or line level signal such as a guitar processor, keyboard, or instrument preamp output. MONO/STEREO JUMPER: Selects whether the INST. INPUT jack is mono or stereo. LEFT/RIGHT OUTPUTs: Electronically balanced 1/4" TRS outputs of the Instrument Input.

ground lift: Header jumper for disconnecting chassis ground from the 1/4" TRS instrument output jacks.

MONO/STEREO JUMPER (Located below the LINE INPUT): Selects whether the

LINE INPUT jack is mono or stereo. NOTE: When in MONO mode, the ring of the jack may be used to "phantom power" the PM350. See the OPERATION section for details.

DC IN 12 VDC: For connection to the external Rolls PS27 power adapter. HEADPHONE OUTPUTS:1/4" Stereo jack, and 1/8" stereo jack for connection to stereo headphones or earphones.

LINE LEVEL: Adjusts the level of signal from the LINE INPUT to the headphone mix.

MIC LEVEL: Adjusts the level of signal from the MIC INPUT to the headphone mix.

INST. LEVEL: Adjusts the level of signal from the INST. INPUT to the headphone mix.

LINE

lift gnd

MIC

MIC

INST.

 

LEFT

 

 

RIGHT

INPUT

THRU

INPUT

IN

mon ster

OUT

 

gnd

OUT

 

lift

 

 

 

 

 

 

 

 

mono

 

 

 

 

PERSONAL

 

 

 

stereo

 

 

 

MONITOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PM350b

MIXER PLUS

 

 

DC IN

 

 

 

 

 

 

 

 

 

 

12 VDC

 

 

 

 

 

 

 

 

 

 

+

 

 

 

 

 

 

 

 

 

 

-

HEADPHONE

LINE

 

MIC

 

INST.

 

 

OUTPUTS

LEVEL

 

LEVEL

 

LEVEL

PWR

2

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Image 3
Rolls PM350B owner manual Schematic, Description