Manley Labs Essential Internal Adjustments for Langevin Dual Vocal Combo Headphones

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INTERNAL ADJUSTMENTS

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1)+36 Volt DC adjust with meter from ground to resistor marked by arrow. Check this first and adjust if needed. It is the power supply regulator adjustment. Now for the audio ....

You will have to start out by setting front panel controls to these settings. BYPASS mode, SEP ( LINK OFF ), REDUCTION controls counter clockwise (MIN), GAIN to 1:00 or unity, Balance at 12:00. The top will need to be open. There are two screws on the top that hold the top perforated

panel to the back. Remove these and the perforated top will slide back. Be careful! THERE ARE HIGH VOLTAGES INSIDE THE LIMITER. DO NOT HOLD THE METAL PART OF THE SCREWDRIVER. DO NOT PROBE AROUND WITH THE SCREWDRIVER OR FINGERS. The unit should be on for about 15 minutes to allow for "warming up".

2 & 3) This adjusts thelimiter amplifier gain in all modes. 1 KHz sine at 1.23 volts RMS (+4 dBm, 0 VU) to both inputs. BYPASS mode. Adjust 2 & 3 for unity gain at outputs.

4 & 5) This adjusts VU meter calibration for OUTPUT. Same input, Meter switches to OUTPUT. Adjust for 0 VU on the Meters.

6 & 7) This adjusts the meter zero for Reduction mode. Meter switches to REDUCTION. Adjust for 0 VU on the Meters.

8 & 9) This adjusts the meter in Reduction mode to reflect the actual gain reduction accurately. You will probably need to increase the oscillator 10 dB to get Limiting. Switch from BYPASS to IN. Meter switches to OUTPUT. Adjust GAIN controls to get 0 VU on the METERS again, then adjust REDUCTION controls to reduce the signal to -4dB. Switch METERS to REDUCTION. Adjust 8 & 9 to get -4 dB on the METERS.

10)This adjusts the gain of the right side chain and adjusts the side chain balance in Link. Switch the

LINK ON. There should be 1 to 2 dB change in the Meters. Adjust 10 so that the meter is the same for both sides. You may have to re-adjust 8 and 9. Check that both in LINK and SEPARATE that both channels show the same reduction.

11)Sets the gain for each channel's Mic Pre. Use a low level input in the mic XLRs and adjust each channel for 45 dB of gain with the Input Attenuator wide open fully CW.

12)Sets the Direct (Instrument) Input gain. Use a low level input in the 1/4" front panel jacks and adjust each channel for 25 dB of gain with the Input Attenuator wide open fully CW.

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Contents Manley Contents Thank YOU IntroductionC D E F G H I H G F E D C B a OPTO-LIMITER Sections C D E F G D C B a MIC PRE Basics PIN 1 = Circuit Ground Connecting Your PreamplifierPage Operation Notes Page Specifications TROUBLE-SHOOTING Page Internal Adjustments Replacing Fuses & Meter Lamps Brown Live Mains ConnectionsWarranty Or email Warranty RegistrationProducerengineer Studiodate Artistsong Trackmic

Langevin Dual Vocal Combo specifications

The Manley Labs Langevin Dual Vocal Combo is a premium vocal processing unit that combines vintage warmth with cutting-edge technology. Designed for both professional recording studios and home setups, this unit stands out with its ability to enhance vocal tracks dramatically while preserving their natural character.

One of the standout features of the Dual Vocal Combo is its dual-channel architecture, which allows engineers to process two vocal signals simultaneously. This is particularly useful when recording duets or layering harmonies. Each channel is equipped with a dedicated mic preamp, providing individual control over gain, EQ, and compression, thus offering flexibility for different vocal styles and recording environments.

The mic preamps in the Langevin Dual Vocal Combo are renowned for their low-noise performance and ability to handle high sound pressures without distortion. With high-quality discrete components, the preamps deliver a warm, rich tone that enhances the clarity and presence of vocals. The unit also incorporates a high-pass filter to eliminate unwanted low-end rumble, which helps to focus the vocal sound in the mix.

Another significant feature is the built-in optical compressors. These compressors are designed to provide smooth, transparent dynamic control, allowing for a more polished final sound. The optical design ensures that the compression is musical and responsive, providing the ability to gently tame peaks without squashing the dynamics of the performance.

The EQ section of the Dual Vocal Combo comprises four bands of equalization, with both boost and cut capabilities. This flexibility enables engineers to sculpt their vocal tracks precisely, enhancing desired frequencies while reducing any harsh elements. The frequency selections cover the full vocal range, making it versatile for various vocal tones.

The Dual Vocal Combo also features an intuitive user interface, making it easy to navigate adjustments. Its robust construction ensures durability, suitable for constant use in a studio environment. With the signature Manley design aesthetics, it adds a touch of professionalism to any recording setup.

In conclusion, the Manley Labs Langevin Dual Vocal Combo is an exceptional choice for vocal processing. With its dual preamps, high-quality compression, extensive EQ options, and user-friendly design, it caters to the needs of both amateur and seasoned professionals looking to elevate their vocal recordings. Whether for tracking, mixing, or live performance, this unit proves to be an invaluable asset in any audio arsenal.