MANLEY LABORATORIES, INC. OWNER'SMANUAL LANGEVIN STUDIO HEADPHONE SYSTEM MANUFACTURED BY: MANLEY LABORATORIES, INC. 13880 MAGNOLIA AVE. CHINO, CA.
CONTENTS SECTION PAGE INTRODUCTION 3 MAINS CONNECTIONS 4 OPERATIONAL NOTES 5 SPECIFICATIONS 8 WIRING PIN LISTS / TECH INFO 9 WIRING NOTES 10 BLOCK DIAGRAM / INTERNAL LAYOUT 11 WARRANTY 12 WARRANTY REGISTRATION 13 NOTES 14
INTRODUCTION GENERAL NOTES LOCATION & VENTILATION The Langevin STUDIO HEADPHONE SYSTEM must be installed in a stable location with ample ventilation. It is recommended, if this unit is shelf mounted, that you allow enough clearance on the top and bottom of the unit such that a constant flow of air can flow through the ventilation holes. WATER & MOISTURE As with any electrical equipment, this equipment should not be used near water or moisture.
MAINS CONNECTIONS Your unit has been factory set to the correct mains voltage for your country. The voltage setting is marked on the serial badge, located on the rear panel. Check that this complies with your local supply. The voltage changeover switch is located inside the unit in the middle of the PCB near the power transformer. To change the voltage from 120 to 240 volts, simply remove the top cover by unscrewing the center fixing screw and sliding the top out towards the rear of the chassis.
OPERATIONAL NOTES SWITCHING ON The power switch and fuse are located on the remote power supply. Do not hot plug the station while the power is on. It is possible to get temporary contact of non-compatible pins while aligning the power connectors. This can short out the supply, or cause a positive voltage where a negative voltage should be. The only things you have to be warned about are few. Upon power-up the LED next to the MUTE switch will light. Generally it will be GREEN and the unit is not muted.
Another typical CUE problem is leakage from the headphones into the mic. It can happen with quiet instruments and loud headphones. Leakage often is a problem with vocals and more so with harmony vocals. The usual fix is in the mix. We use gates and automation and phase reverse tricks and plenty of time to try to eliminate the leakage. The best solution is not to record much leakage in the first place. Try the same methods we suggest to prevent feedback. Less volume and better sealed phones.
On the topic of hints - here's a few things to try sometime. Some singers and drummers have a real problem with headphones. If these artists are veteran stage performers they are probably more comfortable with stage monitors. You can set up speakers instead of headphones if you are careful and do it right. First you need a pretty dead room - across the spectrum not just the highs.
OTHER HEADPHONE STATION TRICKS Another drum trick where these stations are useful is in the mix. We set up a snare drum in a live room without the rest of the kit. We place a pair of drum sticks about 4 inches apart across the rim. Then we put an Auratone facing down on the sticks. We mic the bottom of the snare and the room. Then we feed the original recorded snare into the Auratone. We mix the mics we have set up with the original snare and smile.
SPECIFICATIONS SPECIFICATIONS: INPUTS: All inputs on 56 way ELCO/EDAC multi-pin connectors 1-4 -balanced line-level mono - 60 mm fader - pan pot 5-6 -balanced line-level stereo - 60 mm fader - switchable Mono, Stereo or Stereo Image Manipulation (SIM) - paralleled on 25 pin SUB-D connector Electrical - 40 Kohm input impedance - CMRR is greater than 70dB with source Z< 150 ohm - CMRR is greater than 50dB with source Z= 1K ohm - CMRR is greater than 20dB with source Z= 1K ohm 20 - 200 20hz - 1K 1K - 100K
PIN-OUT OF MULTIPIN CONNECTORS THE +4 BALANCED LINE INPUTS USE AN ELCO 56 CONNECTOR AND ROUGHLY FOLLOW STANDARD "ADAT" PINOUTS. STANDARD ADAT CABLES WILL WORK. OUTPUTS ARE PIN-OUT STANDARD BUT OF COURSE ARE NOT DESIGNED TO INTERFACE WITH A TAPE MACHINE.
WIRING NOTES Help!... It hums when we plug in the inputs. Every studio should have several of those AC adapters that convert a 3 pin AC plug into a 2 pin plug. Try 'em. Resist the temptation to break off the ground pin on the AC cable. Tomorrow you may need it. If you don't have an adapter - your local hardware store will and they are cheap insurance. The textbook style of studio grounding always suggests a "STAR" ground system.
4) Most users do not get involved with the routing of control room mic to headphone stations in any tricky or involved way. Most simply use the built in CUE system of the recording console to feed a basic mix into the station's (stereo) input 6. This is sometimes the monitor mix and sometimes a basic headphone mix to which the musicians add a whole bunch more of themselves.
WARRANTY All Manley Laboratories equipment is covered by a limited warranty against defects in materials and workmanship for a period of 90 days from date of purchase to the original purchaser only. A further optional limited 5 year warranty is available to the original purchaser upon proper registration of ownership within 30 days of date of first purchase.
WARRANTY REGISTRATION We ask that you please fill out this registration form and send the bottom half to: MANLEY LABORATORIES REGISTRATION DEPARTMENT 13880 MAGNOLIA AVE. CHINO CA, 91710 Registration entitles you to product support, full warranty benefits, and notice of product enhancements and upgrades. You MUST complete and return the following to validate your warranty and registration. Thank you again for choosing to use Manley Laboratories. MODEL ____________________ SERIAL No.
