Manuals / JBL / Portable Media / Portable Speaker

JBL M9500 owner manual Typical System Performance Measurements

Models: M9500

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The JBL model 475Nd compression driver used in the M9500 has a smooth titanium dome 101 millimeters in diameter that has been lightly coated with Aquaplas™ damping compound. Its aluminum ribbon voice coil operates in a magnetic flux field of 1.65 tesla (16,500 gauss). Mid-band efficiency is 20%, while at the peak value of driver impedance it is in excess of 50%. The driver uses JBL’s Coherent Wave™ phasing plug, which provides equalized path lengths from all sections of the diaphragm to the driver's output. The driver is mounted on the H9500 horn, a design used only in this system that provides smooth loading down to 500 Hz and exhibits consistent horizontal dispersion over its operating range.

There are two JBL model 1400Nd low-frequency transducers in each loudspeaker system. A single 1400Nd is capable of handling instantaneous input signals of 600 watts, corresponding to a midband peak output of 118 dB Lp at a distance of one meter. The transducer’s second and third harmonic distortion have been reduced through the use of JBL’s traditional aluminum shorting ring at the base of the pole piece, as well as through the use of a copper shorting ring on the top plate adjacent to the voice coil. The transducers make use of JBL’s Vented Gap Cooling™ in which forced air, generated by cone motion, removes heat produced by the voice coil. Each driver is mounted in its own ported enclosure, and the two enclosures are “stagger tuned” to provide smoother and more extended low-frequency response.

Cutaway views of the high-frequency and low-frequency transducers are shown in Figures 2 and 3.

Typical System Performance Measurements

The high-frequency response of the M9500 system was care- fully established by making a series of measurements over frontal angles of 60° in both vertical and horizontal planes. This allows for optimal listening over a wide area. The frequency response averaged over the 60° horizontal and vertical angles, measured from 200 Hz to 20 kHz, is shown in Figure 4. Here, the network High Frequency trim is set in its zero position. The slight downward trend was incorporated, based on extensive listening tests to contemporary pop/rock and classical recordings.

 

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Figure 4. Averaged frontal angle response (60°, horizontal and vertical) of M9500 from 200 Hz to 20 kHz.

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JBL M9500 owner manual Typical System Performance Measurements
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M9500 specifications

The JBL M9500 is a remarkable loudspeaker that exemplifies the marriage of advanced technology and exceptional sound quality. Designed for audiophiles and professional sound engineers alike, this loudspeaker is a prime choice for both studio monitoring and live sound applications.

One of the standout features of the JBL M9500 is its 15-inch woofer. This large driver is engineered to deliver deep, powerful bass response, allowing it to handle a wide frequency range with ease. Coupled with a high-efficiency compression driver, the M9500 achieves clear and articulate mid to high frequencies, ensuring that every detail of the audio is reproduced with precision. The crossover network in the M9500 is optimized to provide a smooth transition between the woofer and the high-frequency driver, producing a cohesive soundstage.

The design of the M9500 not only focuses on performance but also on durability. Its robust cabinet construction is built to withstand the rigors of both touring and studio use. The enclosure features a ported design that enhances bass response while minimizing distortion, which is critical in both music production and live sound situations. Additionally, the speaker is equipped with a rugged grille to protect the drivers from damage during transport or rigorous use.

In terms of connectivity, the JBL M9500 offers a variety of input options, making it versatile for different setups. This ensures compatibility with a wide range of audio equipment, from mixing consoles to home audio systems. The speaker's impedance is designed to integrate seamlessly into various configurations, providing flexibility for both professionals and hobbyists.

The M9500 also features advanced sound shaping technologies, such as Intelligent Bass Management, which allows users to customize their listening experience according to their specific environment and preferences. This feature is especially useful in live sound applications where venue acoustics can vary dramatically.

Overall, the JBL M9500 stands out in the crowded loudspeaker market due to its powerful sound output, robust build quality, and versatility. Whether it's for studio monitoring or live performance, the M9500 delivers a remarkable sonic experience, making it a top choice for sound professionals and enthusiasts alike. With its combination of technology, design, and user-friendly features, the JBL M9500 proves to be a worthy investment for anyone serious about high-quality audio.