Download MP222 Studio Pro Preamp
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For warranty registration please visit the rolls web site at www.rolls.com. MP222 Studio Pro Preamp CHANNEL1 1 CHANNEL 0 OUTPUTS MUST BE CH 2 INPUT CH 3 INPUT L L R R USED RIGHT - L CH 2 + MUTE OUTPUT R INPUT ON - OFF PHANTOM POWER CH 1 INPUT - ROLLS CORPORATION SALT LAKE CITY, UTAH 10/11 80Hz pwr INPUT 15 VDC + 180 10 - LINE OUT MONO INPUT CH 1 LEVEL CH 2 LEVEL CH 3 LEVEL OUTPUT 0 -30 dB Two Channel Microphone Preamp LEFT INPUT BOTH 80Hz CH 4 LEVEL MP222 180 10 + 0 LOW CUT PS12 0 -30 dB Studio Pro Preamp PHASE CH 4 3.5mm STEREO INPUT LEVEL PAD MA251 CLASS AMP PAD MP222 MADE IN USA +48V 5 + 5 WATT MIX/AMP +48V CHANNEL CHANNEL 22 www.rolls.com LOW LEVEL PHASE CUT MIC/ LINE DUAL OUTPUT MIC/ LINE CHANNEL 2 CH1-TIP CH2-RING CHANNEL 1 QUICK START OPERATION GUIDE INTRODUCTION SPECIFICATIONS Thank you for purchasing the new MP222 Studio Pro Preamp - two channel microphone preamp. Although having many possible uses, this microphone preamp was designed for studio applications. It has a transformer balanced mic input section, and many variable options for getting your mic to sound just as you want it to when recording. It is great if you are just looking for studio quality mic processing, or any application where a high quality mic preamp is needed. Input Impedance: mic - 600 Ohms or greater XLR Please review this manual carefully as it contains important information regarding the proper use of this product. INSPECTION 1. Unpack and Inspect the MP222 package. Your MP222 was carefully packed at the factory in a protective carton. Nonetheless, be sure to examine the unit and the carton for any signs of damage that may have occurred during shipping. 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 visit our web site at www.rolls.com, click on the Register Your Warranty Here text and follow the instructions to register your MP222. Disclaimer: This Quick start guide assumes that the user has a basic knowledge of audio connections. It also assumes that the user has had some experience with recording or high-end preamps. Training and operation is the dealers responsibility. At Rolls we do not sell directly to customers. We have factory authorized dealers and it is the dealers responsibility to gather your equipment list and recommend proper products to the consumer. Do not call the Rolls factory and expect help with your setup. We rely on our dealers to do such work. There is only so much that can be done over the phone so PLEASE CONTACT YOUR LOCAL DEALER WITH QUESTIONS. If you have purchased you item online or used, you are on your own. WE HIGHLY RECOMMEND THAT IF YOU ARE NOT FAMILIAR WITH SUCH PRODUCTS TO PLEASE BUY THEM FROM A REPUTABLE FACTORY AUTHORIZED DEALER THAT OFFERS CUSTOMER SUPPORT.. 1 Output Impedance: 50 Ohms THD + Noise: .02% S/N Ratio: 110 dB Frequency Response: 20 Hz - 30 kHz (+0 / -1 dB) Max Output Level: +14 dB Max Input Level: +20 dB Max Gain: +70 dB Current Draw: 30 mA Phantom Power: +48 VDC Input Connectors: 4 Female XLR DC Power Jack: (5.5 X 2.1 mm tip negative) Output connectors: 1/8” (3.5mm) stereo out. 2 Male XLR Size: 6.75”w x 5.125”d x 1.75” h Weight: 1.75 lbs. 6 2 3 J2 3 J4 JAPDC 3 U6A 4069 15V REG SW2B 3 4 2 3 1 4 6 1K 1 VPHAN DPDT SW4B 2 SW4A 1 R31 1K VPHAN C31 120PF 5 R54 10K 1 3 R60 U6C 4069 3 4 827 T2 DPDT C30 1U D4 LDGR 10K R59 10K 13 C29 503 10K 1 R39 3 +V 12 VB 10 U6E 4069 Q1 2N3906 R63 1K R11 22K 1N5242B D23 11 C4 47U R13 22K 4.7K R33 1 4.7K R9 1 +V P3 W100K U3A R34 220K VB P1 GAIN VB U6F 4069 R30 10K 3 220K U1A 27PF 4560 2 +V R10 W100K GAIN C15 R8 10K 3 27PF4560 2 C3 10K 1 R14 3 SW5A R32 47K 4 3 VB 2 VB R7 47K 4 3 DPDT SW2A R58 LDGR D3 6 5 2 P/N 2 4.7K C32 1000U +V T1 1 2 5 2 4 P/N 827 2 LDGR D2 R55 1K +V 1K R38 DPDT 4 6 R4 1K DPDT SW1A DPDT 2 SW1B R3 4 6 1N400X D1 22K R57 R53 22K 4 Input Pad 6 3 1 SW5B Input Pad R29 6.8K DPDT 5 3 3 1 R2 6.8K DPDT U6B 4069 6.8K R28 R1 6.8K PS27S ONLY CH 2 (L) 1 J5 J8 CH 1 1 2 CH 1 (R) XLR F PC XLR F PC 5 6 4560 5 6 P2 U1B +V R41 10K U3B 9 D20 1N5242B 1N5242B IRLZ14L Q2 C10 .2UF VB SW3A 7 2 C24 .2UF VB SW6A 10K 3 R43 C35 47UF 1N5242B D21 .1U D22 1N4148 C8 80hZ Low Cut +V L1 50uH 2 10K 3 R18 80hZ Low Cut DPDT D19 U6D 4069 8 7 DPDT 4560 L2 long board trace VB C23 P4 503 P100K PHASE R42 1K 10K R40 +V R17 1K VB PHASE P100K C9 503 22K R15 R16 22K 8 J1 1 U4A R44 4560 100 VPHAN R62 4560 22K C25 27PF U2A 22K R19 C11 27PF C22 .1U 5 6 +V 100 R21 +V 100 R45 C7 .1U 4.7K R48 DPDT 2 SW7B C21 .1U +V R51 4.7K OUT DPDT 2 330 R27 3 JK3.5ST J7 R52 330 5968 S 350 W Murray, Utah 801-263-9053 84107 Document Number: FXa MP222.SCH Rev: A Sheet 1 of 1 OUT XLR M PC J6 LOW R49 330 HI SW8A 4.7K R26 3 DPDT XLR M PC J3 LOW R24 330 HI SW7A Rolls Corporation 7 3 1 3 1 R50 100 DPDT SW8B 47U C28 7 R25 100 47U C14 4.7K R23 MP222 DUAL MIC PREAMP +V 4560 U4B R47 10K C27 27PF 4560 U2B 10K R22 C13 27PF Date: 5 May 2011 Size: Title C36 C37 10UF 503 +V VB R46 10K 1 47U VB 5 6 C26 10K R20 1 47U C12 6 2 1 2 XLR F PC XLR F PC 1 2 14 7 2 2 4 4 1 1 8 3 3 5 5 4 4 4 4 8 8 2 1 2 1 5 6 5 SCHEMATIC DESCRIPTION FRONT PANEL CHANNEL1 1 CHANNEL +48V PAD INPUT -30 dB www.rolls.com LOW LEVEL PHASE CUT Studio Pro Preamp 0 CHANNEL CHANNEL 22 10 0 180 80Hz +48V PAD INPUT -30 dB MADE IN USA 0 MP222 LEVEL PHASE Two Channel Microphone Preamp 0 LOW CUT 10 180 pwr 80Hz FRONT PANEL DESCRIPTION Note: Channel One descriptions are identical to Channel Two INPUT: Standard XLR type balanced input, pin 2 is hot, for Microphones. -30 dB Pad: This switch changes the level of the input. When in, it attenuates the input level down by -30 dB. PHANTOM POWER +48V: Turns on the internal 48 volt power supply when using phantom powered microphones. It should be turned off when not in use. The Phantom Power switch is a great way to turn off or mute a condenser mic. If you are recording and want to turn your mic off this is the best way to mute it for either short or long periods of time. LEVEL: Sets the output level as desired, for best signal to noise ratio it should be set in the middle to start. PHASE: This is a variable setting from 0 or “in phase” to 180 degrees out of phase and everything in between by adjusting the level of the knob. LOW CUT: This is a high pass filter that when depressed cuts the low end of the signal at 80Hz. 2 CONNECTION - OPERATION REAR PANEL CH 4 3.5mm STEREO MA251 CLASS AMP BOTH OUTPUTS MUST LEFT + - BE L CH 2 INPUT CH 3 INPUT L L R R USED RIGHT - LINE OUT CH 2 + MUTE R CH 1 LEVEL CH 2 LEVEL CH 3 LEVEL MONO INPUT OUTPUT INPUT PS12 CH 4 LEVEL ON - OFF PHANTOM POWER CH 1 INPUT OUTPUT 5 + 5 WATT MIX/AMP MP222 Connect microphones to the MP222 via balanced XLR cables. INPUT 15 VDC + - MIC/ LINE DUAL OUTPUT MIC/ LINE CHANNEL 2 CH1-TIP CH2-RING CHANNEL 1 INPUTS: 1 - 2: XLR balanced inputs for connection to any standard dynamic or condenser microphone. The input circuitry has a very wide input range and can accommodate almost any (mic to line) level signal if you select the proper setting for the Mic/Line switch. OUTPUTS: 1 - 2: XLR balanced outputs. The output circuitry has a very wide range and can accommodate most mic XLR inputs. If you select the proper setting for the -30 dB switch on the front of the MP222. MIC/LINE SWITCH: This is for setting up the output XLR’s for either Mic or Line level. The mic/line switch will effect the XLR and DUAL OUTPUT levels. IN=LINE OUT=MIC DUAL OUTPUT: Tip-Ring-Sleeve stereo 1/8” (3.5mm) jack for connection to a computer or other stereo type inputs. The tip of the jack is connected to channel 1 and the ring is connected to channel 2. This will make channel 1 effectively the left output and channel 2 the right output going into a stereo application. 15 VDC JACK: For connection to the Rolls PS27s 15VDC power supply. Make sure that you are using the proper Mic/Line switch setting. If the output level of the MP222 seems very low or very loud it might be that you are using the wrong mic/line switch setting. If you are using a Mic output level the mic/line switch on the back of the MP222 is set to the Mic setting, and if you are using a Line level output signal that the switch is in the line setting. The mic/line switch will effect the XLR and DUAL OUTPUT levels. IN=LINE OUT=MIC Make sure that the input PAD switch is in the proper setting. Start with the PAD switch in the outward position (OFF) for most Microphone applications, and adjust it as needed. See “FRONT PANEL” section of this manual for more info on the PAD switch. Improper PAD switch setting will make the unit seem very low in overall volume (-30 dB to be exact). Make sure if you are using a Mic that the PAD switch on the front of the MP222 is set to the outward position (OFF), and if you are using a Line level input signal that the switch is in the inward -30 dB setting (ON). If you are using the DUAL OUTPUT connect it to the Input of your recording device that also uses a stereo 1/8” (3.5mm) Tip-Ring-Sleeve plug. Follow the silk screening on the back of the of the unit. The tip is connected to channel 1 and the ring is connected to channel 2. This will make channel 1 effectively the left output and channel 2 the right output going into a stereo application. Connect the Rolls PS27s power supply. Once your MP222 is properly connected, the pwr LED on the front panel will light. If you are using condenser type microphones, apply the phantom power to the desired channels. Test the microphone levels by speaking into the microphones at a normal operating volume, and adjust the Mic Level controls until you achieve desired levels. Adjust each control to the desired setting. Adjust the PHASE and LOW CUT as desired. These can be set to any level/combination that is desired in both mic or line level. Just do what sounds best to you. For best results, we recommend recording a couple of test runs to ensure you have proper levels set. 3 4