Rolls PM350B User's Manual
Contents
1. Setting the Mono Stereo jumpers 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 as shown here If the signal to the LINE INPUT or INSTRUMENT INPUT is Tip Sleeve mono move the jumper to connect the mono pins NOTE If the LINE INPUT mono stereo jumper is missing only one side of the headphones earphones will work Phantom Powering the PM350b A very useful feature of the PM350b is the ability to send the 12VDC power to the unit via the LINE INPUT ring connection Make sure the Mono Stereo jumper is in the MONO position Connect the 12VDC to the Ring of the TRS plug as shown here ROLLS WILL NOT BE HELD RESPONSIBLE FOR DAMAGE DONE TO THE PM350 AS A RESULT OF IMPROPER USE OF THIS FEATURE IF YOU ARE NOT SURE HOW TO DO THIS CORRECTLY CONTACT A QUALIFIED SERVICE TECH NICIAN NOTE This unit cannot be powered by standard 48 Volt Phantom Power supplied by mixers phantom power adapters etc The current amperes is insufficient to power the PM350b Also any voltage greater than 16 VDC will damage the unit GROUND LIFT The Mic Input and Mic Thru have a ground lift jumper provided to lift the XLR pin 1 from chassis ground The 1 4 TRS Instrument Outputs also have this feature If you experience a hum on the microphone or instrument outputs lifting the ground may elliminate the problem To lift the ground use a pair of needle nose plie2. OF MERCHANTABILITY AND FITNESS FOR A PARTICU LAR PURPOSE SHALL BE LIMITED IN DURATION TO THE ONE YEAR DURATION OF THIS WRITTEN LIMITED WARRANTY Some states do not allow limitations on how long an implied warranty lasts so the above limitation may not apply to you IN NO EVENT SHALL WE BE LIABLE FOR ANY SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR BREACH OF THIS OR ANY OTHER WARRANTY EXPRESSED OR IMPLIED WHATSO EVER Some states do not allow the exclusion or limitation of special incidental or consequential damages so the above limitation or exclusion may not apply to you This warranty gives you specific legal rights and you may also have other rights which vary from state to state PM350b Personal Monitor Mixer Plus PM350b Personal Monitor Mixer Plus The PM350 mixes an XLR mic signal 1 4 TRS stereo or mono instrument signal and a 1 4 TRS stereo or mono monitor signal together for headphone monitoring XLR Mic In amp Pass Through Stereo or Mono 1 4 Line Input Phantom powering via the Line In Stereo or mono 1 4 Instrument In with built in DI outs Switchable ground lift on balanced outputs Two Headphone Outputs 1 4 and 1 8 MIC INPUT MIC THRU LINE INPUT PWR HEADPHONE OUTPUTS LINE LEVEL MIC LEVEL INST LEVEL mono stereo DC IN 12 VDC PERSONAL MONITOR MIXER PLUS PM350b INST IN LEFT OUT RIGHT OUT lift gnd lift gnd mon ster INTRODUCT
3. the volume only to the point where hearing is comfortable 2 Ringing in the ears may indicate that the levels are too high Lower the volume level 3 Have your ears checked by an audiologist on a regular basis If you experience wax buildup in your ears stop using the system until an audiologist has exam ined your ears 4 Wipe the earphones with an antiseptic before and after use to avoid infections Stop using the earphones if they are causing great discomfort or infection 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
4. ION Thank you for your purchase of the PM350b Personal Monitor Mixer Plus This unit mixes a microphone signal with a 1 4 Tip Ring Sleeve stereo or mono instrument level signal and a 1 4 TRS stereo or mono monitor signal The Mic Input and Thru jacks have a switchable ground lift as do the 1 4 TRS Instrument Outputs The instrument input connects to two independent 1 4 TRS balanced outputs via electronic balancing circuits The PM350b is designed for performers who want to monitor their own sounds such as their vocals and instruments with the main mix via headphones or earphones It s very popular with drummers who need to mix a click track with a monitor signal Church choir singers love the PM350b to monitor their voices over the musicians The PM350b is shipped with an external AC adapter INSPECTION 1 Unpack and inspect the PM350b box and package If obvious physical damage is noticed contact the carrier immediately to make a damage claim We suggest saving the shipping carton and packing materials for safely transporting the unit in the future 2 Please complete the Warranty Registration Card and return it to the factory TABLE OF CONTENTS INTRODUCTION 1 INSPECTION 1 TABLE OF CONTENTS 1 DESCRIPTION 2 CONNECTION 3 OPERATION 4 SCHEMATIC 5 SPECIFICATIONS 6 WARRANTY BACK COVER SPECIFICATIONS Max Input Level 20 dB XLR 40 dB Line 15 dB Instrument Inst Input Impedance 50K ohms Inst Output Freq Respo
5. 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 SCHEMATIC 2 5 MIC INPUT MIC THRU LINE INPUT PWR HEADPHONE OUTPUTS LINE LEVEL MIC LEVEL INST LEVEL mono stereo DC IN 12 VDC PERSONAL MONITOR MIXER PLUS PM350b INST IN LEFT OUT RIGHT OUT lift gnd lift gnd mon ster MIC INPUT MIC THRU LINE INPUT PWR HEADPHONE OUTPUTS LINE LEVEL MIC LEVEL INST LEVEL mono stereo DC IN 12 VDC PERSONAL MONITOR MIXER PLUS PM350b INST IN LEFT OUT RIGHT OUT lift gnd lift gnd mon ster INST INPUT MIC INPUT MIC THRU LINE INPUT lift gnd CONNECTION The diagram below shows an example of how to connect the PM350b for proper operation The LINE INPUT connects to either a 1 4 stereo or mono plug If this plug is Tip Ring Sleeve stereo and you re sending a stereo signal to this jack select the STEREO setting o
6. Owners Manual Rolls Corporation Salt Lake City UT 1 03 LIMITED WARRANTY This product is warranted to the original consumer purchaser to be free from defects in materials and workmanship under normal installation use and service for a period of one 1 year from the date of purchase as shown on the purchaser s receipt The obligation of Rolls Corporation under this warranty shall be limited to repair or replacement at our option during the warranty period of any part which proves defective in material or workmanship under normal installation use and service provided the product is returned to Rolls Corpora tion TRANSPORTATION CHARGES PREPAID Products returned to us or to an authorized Service Center must be accompanied by a copy of the purchase receipt In the absence of such purchase receipt the warranty period shall be one 1 year from the date of manufacture This warranty shall be invalid if the product is damaged as a result of defacement misuse abuse neglect accident destruction or alteration of the serial number improper electrical voltages or currents repair alteration or maintenance by any person or party other than our own service facility or an authorized Service Center or any use violative of instructions furnished by us This one year warranty is in lieu of all expressed warranties obligations or liabilities ANY IMPLIED WARRANTIES OBLIGATIONS OR LIABILITIES INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES
7. f the Mono Stereo jumper If the plug is Tip Sleeve mono select the MONO setting of the Mono Stereo jumper The MONO setting is also the proper selection if you are phantom powering the PM350b The MIC INPUT connects to either a dynamic or condenser microphone via a standard XLR cable If you are using a condenser type mic you will need to power it via phantom power from the mixer which connects to the MIC THRU jack This jack will pass the phantom power from a mixer on to the micro phone Connect the MIC THRU jack to the mixer or snake as necessary The INSTRUMENT INPUT connects to a guitar preamp output keyboard or any stereo or mono instrument level signal Again selecte stereo or mono The INSTRUMENT OUTPUTs are electronically isolated and converts the high impedance INSTRUMENT INPUT signal to low impedance so it can be sent down a balanced line These signals may then be plugged into an XLR input on a mixer or snake by using a 1 4 TRS to XLR cable Note that the level of this signal may be too high for a mixer s microphone input you may experience distortion In this event turn down the instrument connected to the PM350 IN STRUMENT INPUT pad the input to the mixer s mic input or trim down the mic input Connect your head phones or earphones to the proper Head phone Output OPERATION Make sure the Rolls PS27 12VDC power supply is connected to an active AC outlet and all audio connections are in place
8. nse 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 1 6 This symbol indicates that there are important operating and maintenance instructions in the literature accompanying this unit WARNING USING THIS SYSTEM AT EXCESSIVE VOLUMES CAN CAUSE PERMANENT HEARING DAMAGE USE AS LOW A VOLUME AS POSSIBLE In order to use this system safely avoid prolonged listening at excessive sound pressure levels Please use the following guidelines established by the Occupa tional Safety Health Administration OSHA on maximum time exposure to sound pressure levels before hearing damage occurs 90 dB SPL at 8 hours 95 dB SPL at 4 hours 100 dB SPL at 2 hours 105 dB SPL at 1 hour 110 dB SPL at 1 2 hour 115 dB SPL at 15 minutes 120 dB SPL avoid or damage may occur It is difficult to measure the exact Sound Pressure Levels SPL present at the eardrum in live applications In addition to the volume setting on this Personal Monitor unit the SPL in the ear is affected by ambient sound from floor wedges or other devices The isolation provided by the fit of quality earphones is also an important factor in determining the SPL in the ear Follow these guidelines in the use of this product to protect your ears from damage 1 Turn up
9. rs and carefully remove the header jumper Replace the jumper on the two pins labled lift MIC THRU LINE INPUT HEADPHONE OUTPUTS MONO STEREO lift gnd 3 4
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