Speakers JL Audio C7-350cm
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Center speakers JL Audio C7-350cm
The C7 model series is the pinnacle of JL Audio's car speaker design, benefiting from the most advanced technologies, development tools and commitment to precision manufacturing. The design solutions of the C7 series have been created and refined using JL AUDIO's powerful mechanical and finite element analysis (FEA) modeling systems, including its own Dynamic Motor Analysis (DMA) software. These studies led to innovative engine and suspension solutions that were key to meeting the C7's design goals for smooth off-axis response, dynamic stability and low distortion. No detail, material or design element has been left unexamined in each of the C7 speakers. From the tweeter's exotic corundum ceramic diaphragm to the intricately machined midrange driver plates that greatly improve linearity. Even seemingly small details have been designed with a lot of thought, like the way the specially designed cables connect to the rear suspension. To prevent noise without damaging the integrity of the spider material. The woofer dust box went through ten prototype generations before arriving at a solution that resulted in the smoothest high-frequency response and best mechanical integrity. These details and hundreds more like them simply had to be perfect for the design team to approve them for production. A passive frequency crossover is not included in the C7 series speakers, as they are intended for active systems. It is therefore recommended to install a DSP processor with a dedicated amplifier channel for each speaker in the system. This will result in a spectacular musical presentation that easily exceeds the performance limits of typical high-end car speaker systems. When you listen to the C7, you'll hear a level of resolution, precision and sound that delivers an intensely pure audio experience.
Main features of JL Audio C7-350cm speakers
- Center speakers with a diameter of 90 mm from the top C7 range.
- Durable mineral injected polypropylene membrane with long stroke capability.
- Mid-woofer engine optimized according to the patented DMA system.
- Powerful ferrite magnets for rich dynamics and high mid-bass performance.
- Patented Elevated Frame Cooling design for improved performance handling.
- Ingeniously designed polymer basket design reinforced with glass fibers for the lowest possible resonances.
- The package includes two cover grids, one made of fine mesh, the other design with a spiral steel grid.
- Manufactured using state-of-the-art technology at the JL Audio factory in Florida, USA.
About the JL Audio brand
JL Audio is an American manufacturer of consumer audio equipment that specializes in home, vehicle and boat sound systems. It is one of the main pioneers of vehicle sound systems and is undoubtedly best known for its high-end subwoofers. The company was founded in 1975 and is therefore one of the oldest manufacturers in this field. The original focus was on home sound systems, but already at the turn of the seventies and eighties, they also started to deal with the car audio segment, the popularity of which grew rapidly at the time. During their rich history, JL Audio produced a lot of completely unique and patented subwoofers that had almost no competition at the time. And it is similar even now. Subwoofers from this manufacturer amaze with their performance and at the same time absolutely top sound quality, unique patents and excellent workmanship. In particular, the top W6 and W7 series have long been among the most interesting products on the market today. However, the revolutionary flat subwoofers of the TW1 and TW3 series, as well as the perfectly tuned subwoofer enclosures, will also impress. You can expect the same quality from the amplifiers, and it's also worth noting the high-end products designed for integration into factory audio systems. In short, you can't go wrong with JL Audio products and you can always rely on their high quality and uniqueness.
| Catalog number | C7-350CM |
| Brand | JL Audio |
| Links | Official web presentation (English) |
| Speaker typeCoaxial speakers: Coaxial speakers are characterized by a so-called all-in-one design. The tweeter and mid-bass speaker are in one basket. The advantage is simpler assembly, but thanks to the connection or proximity of the bands in one speaker, the sound quality will usually be reduced. As a rule, in the middle of the mid-bass speaker, there is a tweeter whose voice coil works in the second air gap of the common magnetic circuit. The three-way coaxial speaker consists of a mid-bass speaker, a center speaker and a separate tweeter in the front on a special beam. Component Speakers: Component speakers are characterized by a division into individual frequency bands, treble + mid-bass + or. bass band. The individual speakers can be placed completely separately, which results in a better sound and acoustic performance. In the vast majority of cases of component speakers, an external crossover is also supplied, which divides the treble, middle / mid-bass, and into the three-band the bass band or allows setting the decibel level of the tweeter (e.g. +2 dB, 0 dB, -2 dB), steepness (e.g. 6dB/Oct. 12dB/Oct.) or active or bi-amp connection. | Central |
| RMS powerRMS speaker power is the constant power of the entire system, not just one speaker or one side. This is also the performance of continuous use of the speakers. If the RMS power is exceeded for a long time, the speakers may be irreversibly damaged! | 100W |
| Sensitivity (SPL 1W/1m)Sensitivity, sensitivity or efficiency of the speaker. Speaker sensitivity is given in decibels (dB) and simply put, the higher the value, the lower the demands on the amplifier's power. This is a defacto rating of how a speaker converts watts to sound. Sensitivity ratings are in noise level measured at 1 meter from the speaker using 1 W (watt of power) or using 2.83 volts at the source at 1 meter. A higher decibel level means the speaker is louder with less power. For every 3 dB increase in sensitivity, the speaker requires half the power to reproduce the same volume. For example, if an 88 dB speaker needs 100 Watts to produce a certain volume, then a speaker with a sensitivity of 91 dB needs only 50 Watts to reach the same volume. | 89.5 dB |
| ImpedanceImpedance - measurement of electrical resistance. When buying speakers, it is important to make sure that the impedance matches the amplifier or car stereo you are using. Example: A 2 Ohm speaker cannot be connected to an amplifier that is only stable up to 4 Ohms! A 4 Ohm speaker can easily be used with an amplifier that is stable up to 2 Ohms. The most common speaker impedance today is 3 - 4 Ohm. | 4 Ω |
| Frequency rangeThe ability of the speakers to play a signal from the lowest frequency to the highest, or the speaker's ability to faithfully reproduce sound in a specific frequency band. Professionally: In the frequency range from 40 to 16,000 Hz, the vast majority of fundamental and overtones (harmonics) of all musical instruments are found. We are interested in the course of the radiated sound pressure in this range of frequencies when the loudspeaker system is supplied with constant power. We call this course the frequency characteristic, which tells us the level of radiated sound pressure in decibels (dB) depending on the frequency. The frequency characteristic of a speaker or speaker system can be expressed most succinctly with a graph. Mostly, however, the frequency characteristic is indicated by indicating the maximum tolerance of the sound pressure in the given frequency range, e.g. 50 to 15,000 Hz -+ 6 dB. Since the frequency characteristics of loudspeakers and systems in general are quite uneven, some manufacturers do not even specify this maximum tolerance of sound pressure in decibels in their catalogs for reasons of prestige. Data impoverished in this way is unfortunately worthless. What is valid is that the manufacturer offers a speaker system with a frequency range of 30 to 20,000 Hz, if he is worried about stating the maximum unevenness of the sound pressure in this range, because he can have a tolerance of, for example, +- 20 dB. The unevenness or undulation of the frequency curve in good speaker systems for high-quality music performance should not exceed +-3 dB in the 80 to 12,000 Hz band and +-6 dB in the 40 to 16,000 Hz band. Greater unevenness already depletes or emphasizes certain tonal areas, which can cause audible or even disturbing distortion. The proportion between fundamental tones and higher harmonics also changes, thereby changing the color of the sound, and individual musical instruments as well as the entire musical image sound unnatural. | 300 - 10000 Hz |
| Center speaker diameterThe diameter of the center speaker is given as the diameter of a round speaker, not including the mount, where the mounts protrude even more on smaller speakers. | 90 mm |
| Mounting depth of the center speakerThe mounting depth of the center speaker is measured from the bottom edge of the magnet to the bottom edge of the tin, plastic or cast speaker basket. | 37 mm |
| Center speaker diaphragm materialDiaphragm material that was used in the manufacture of the center speakers. | Mineral filled polypropylene |
| Cover grids included in the packageOriginal cover grilles in speaker packaging. | Yes |
| Price forIf the price is for a pair, the package always includes 2 pieces of everything, e.g. 2x mid-bass, 2x tweeter and 2x crossover. | Few |