English oWner’s manual
OWNER’S MANUAL taBle of contents Introduction........................................................................................................................ 1 Unpacking .......................................................................................................................... 2 Amplifier and Processing Requirements ...................................................................... 4 Speaker Placement ...............................................................................
English Introduction Thank you for purchasing the JBL M2 Master Reference Monitor. The M2 is a free-standing, twoway system that can be placed in any environment to provide an exceptionally accurate monitoring experience. Based on a new generation of JBL high-output, ultra-low distortion transducers, the M2 provides extended frequency response, and very high sound pressure level to meet demanding music, cinema and broadcast production requirements.
Unpacking 1. Open the shipping carton and rotate so it is upright with the end labeled “This Side Up” at the top. 2. Slide the speaker out of the carton with the packing end-pads attached. 3. Remove the spikes from the top packing end-pad and remove the end-pad from the speaker. IMPORTANT: The M2 in the shipping carton weighs 150 lbs. To avoid injury to yourself or damage to the speaker, two people are required to unpack and move the speaker. 4. Remove the protective wrapping from the speaker. 5.
English Installing the Spikes The M2 is shipped with four rubber feet attached to the bottom of the enclosure for use when the speaker is installed upright on a hard surface. Four pointed spikes are included that allow the speaker to acoustically decouple from the floor when it is installed upright on a carpeted floor. WARNING: The spikes are extremely sharp. Use caution when handling them.
Amplifier and processor Requirements The M2 contains no internal crossover network; it must be used with BSS Omnidrive HD Digital Signature processing to provide proper integration of the speaker’s low-frequency and high-frequency transducers.
English Speaker Placement The compact width and depth dimensions of the M2 allow flexibility of placement in a range of production spaces, whether free standing, positioned adjacent to a wall, or in a corner. Digital signal processing in the M2 system’s Crown amplifier or BSS Soundweb London processor provides room-tuning capability that can reduce the negative effect of room modes (standing waves) and compensate for deviations in response created by the speaker’s proximity to the room’s boundaries.
Freestanding Placement In two-channel installations, the distance between the right and left speakers is determined by the distance from the listening position to the speakers – the further away the listener is from the speakers, the further apart the speakers can be placed. The unique geometry of the M2’s Image Control waveguide enables the speakers to deliver accurate high frequency detail, imaging, and natural balance at nearly every listening position in a typical listening environment.
English Placement behind a mixing console When installing M2 speakers behind a mixing console, the speakers should be elevated so the console does not impede speaker performance. Ideally, a line drawn from the center of the woofer perpendicular to the M2 enclosure should clear the top of the console meter bridge. The illustration below shows M2 installation behind a professional mixing console.
Horizontal Placement The M2 speakers can be used in a horizontal orientation. When used horizontally, each M2 should be elevated so the JBL logo is at ear height. Toe-in may be required to provide optimum coverage. The closer the listeners are to the speakers, the more toe-in will be required. (See example below.) Orienting the speakers with waveguides towards the inside and woofers outside may be preferable in installations where the listeners are unusually close to the speakers.
The M2 is designed for use in cinema applications with perforated projection screens. The wide directivity and relatively shallow depth of the M2 waveguide permit a range of speakerto-screen distances with little variation in performance. Digital equalizers in Crown power amplifiers and BSS Soundweb London processors used in English Use with perforated projection screens the M2 System compensate for screen loss, and restore neutral frequency response in the listening space.
Connections CAUTION: Power off amplifiers when making connections. Making connections while an amplifier is operating can damage the speaker system and void the warranty. Amplifiers should also be powered off before connecting or disconnecting any components in the signal chain. The M2 connector panel has two sets of pushterminals. The upper set of terminals is for the highfrequency transducer and the lower set of terminals is for the low-frequency transducer.
English Specifications System format: Two-way floor-standing or soffit mountable High-frequency transducer: D2430K dual-diaphragm dual voice-coil compression driver Nominal impedance: 20 ohms Low-frequency transducer: 2216Nd 15” (381mm) Differential Drive® cone driver Nominal impedance: 6 ohms Crossover frequency: 800Hz (supplied by outboard Digital Signal processing) Frequency range: 20Hz – 40kHz Image Control waveguide dispersion: 120° H x 100° V Sensitivity (1W/1m): 92dB SPL Continuou
Care and Maintenance The JBL M2 Master Reference Monitor requires no regular maintenance other than occasional dusting with a soft, dry, lint-free cotton cloth. The waveguide may also be wiped with a soft cloth. Treat the lacquered enclosure surfaces carefully to avoid scratching the finish. To remove fingerprints and smudges, apply a small amount of diluted ammonia-free or alcohol-free detergent to the cloth and gently clean the surface.
If your JBL product ever needs service, write or telephone us at JBL Incorporated (Attn: Customer Service Department), 8500 Balboa Boulevard, PO. Box 2200, California 91329 (818/893-8411). We may direct you to an authorized JBL Service Agency or ask you to send your unit to the factory for repair. Either way, you’ll need to present the original bill of sale to establish the date of purchase.
www.jblpro.com/M2 HARMAN International Industries, Inc. | 8500 Balboa Bl. | Northridge, CA 91329 USA ©2013 HARMAN International Industries, Incorporated. All Rights Reserved. JBL, Crown, BSS and Differential Drive are trademarks of HARMAN International Industries, Incorporated, registered in the United States and/or other countries. Image Control, Soundweb, Omnidrive HD, HiQnet and System Architect are trademarks of HARMAN International Industries, Incorporated. Part Number: 5030284 – Rev.
