Rolls PM351 Personal Monitor说明书

Rolls Corporation Salt Lake City, UT
9/18
What's in the box?
1 - Made in USA PM351
1 - 15V power supply PN PS27s
1 - This owners manual
PM351 Personal Monitor
SPECIFICATIONS
Max Input Level: -20 dB XLR, +40 dB Line
+15 dB Instrument
Inst. Input Impedance: 50K ohms
Inst. Output Freq. Response: 10 - 30 kHz +/- 3 dB
Output Impedance, Hdphn: 10 ohms
Output Impedance, Inst.: 2 ea; 100 ohms balanced
Gain: 20 dB 1/4", 50 dB XLR
Hdphn Freq. Response: 20 - 20 kHz
S/N Ratio: 90 dB
Power: 9 - 16 VDC
Size (W x H x D): 4.5" x 3.3" x 1.5"
Weight: 1 lb (.45 Kg)
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C o n n e c t y o u r h e a d p h o n e s t o t h e
p r o p e r H e a d p h o n e
O
u t p u t.
PM351 is designed for performers who want to
monitor their own sounds, such as their vocals
and instruments, with the main mix via head-
phones. It’s very popular with drummers who
need to mix a click track with a monitor signal.
Church choir singers love the PM351 to monitor
their voices over the musicians.
Connection guide
PWR: LED for in-dicating power is applied to the PM351.
DC IN 9 - 15 VDC: For connection to the external Rolls PS27 power adapter.
MIC THRU: XLR jack paralleled (hard-wired) to the MIC INPUT jack for pass-through to a mixer or other micro-phone level
input device.
LINE INPUT: 1/4” TRS stereo jack for connection to a line level source such as a mixer monitor/auxil-iary output, cassette player output, CD
player output etc.
HEADPHONE OUT-PUTS: 1/4” Stereo jack, and 1/8” stereo jack for connection to stereo headphones or earphones.
MONO/STEREO SWITCH: 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 PM351. See the next page for
details.
LEFT/RIGHT OUTPUTS: Transformer balanced XLR outputs from the Instru-
ment Input.
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.
MIC INPUT: XLR balanced jack for con-nection to a condenser or dynamic microphone.
INSTRUMENT INPUT: 1/4” TRS stereo jack for connec-tion to an instrument or line level signal such as a guitar
processor, keyboard, or instrument preamp output.
MONO/STEREO SWITCH: Selects whether the INST. INPUT jack is mono or stereo.
GROUND LIFT: Switch for disconnecting chassis ground from pin 1 of the Mic Input and Mic Thru.
GROUND LIFT: Switch for disconnecting chassis ground from the XLR instrument output jacks.
GROUND LIFT
The Mic Input and Mic Thru have a ground lift switch provided to lift the XLR pin 1 from chassis ground. The XLR Instrument Outputs also have this feature. If you experience a "hum" on the microphone or instrument outputs, lifting the ground may elliminate the problem.
Setting the Mono/Stereo switch;
If the input to the LINE INPUT or INSTRUMENT INPUT is a Tip-Ring-Sleeve stereo signal, set the Mono/Stereo jumper for stereo operation. If the signal to the LINE INPUT or INSTRUMENT INPUT is Tip-Sleeve mono, move the switch to connect the "mono".。