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Convertible drivers can be installed in either a coaxial or component mounting style to accommodate most installation locations.
Component speakers will generally come with a crossover setup. They me be sold by the driver size or be boxed as a set like a pair of 6.5″ woofers with separate 1″ tweeters. Component speakers are generally better sounding than their coaxial partners, are generally able to handle more power and allow the opportunity to mount the tweeter in a higher position in the vehicle that will provide the high-frequency drivers weaker high notes an obstacle free path to the listening position.
Some component speaker systems are convertible systems, allowing the tweeter to be mounted to the woofer. Replacing your current car stereo coaxial speakers with a pair of convertible-components is an audible step up in improvement from a standard coaxial design.
Subs and speakers come in different sizes, power ratings and shapes to accommodate different installation applications and sometimes specific octave ranges. The speaker cone is also know as a driver. Speaker sizes are usually referred to as driver sizes. As an example, a 6.5″ driver is a round speaker versus a 6×9″ driver is an oval speaker.
RMS vs. MAX power: The RMS rating of any speaker driver is the continuous power rating that the speaker is designed to withstand at a maximum continued volume rating. The RMS rating is the only number to go by when pairing your speakers with an amplifier. As an example a speaker with a 100Watt, or 100W for short, RMS rating and a 300-Watt Max rating is ultimately a 100 Watt speaker. The Max rating is the temporary spikes in voltage that the speaker can handle. A 100-Watt RMS / 300-Watt Max speaker is going to outperform a 100W RMS / 250W Max speaker at higher volumes, but may not be the more detailed reference speaker.
Ohms: The Ohm rating, or resistance rating, of a speaker is an essential part of a well balanced car stereo system. Many JBL factory speaker systems have 2ohm drivers. Most aftermarket speakers are 4ohm drivers. Replacing these types of factory speakers may require a wiring bypass of the factory amplifier.
Driver resistance ratings are essential when pairing subwoofer and speaker drivers with amplifiers. An amplifier that is 750W @ 2ohms might only generally be 500W or less @ 4ohms. When purchasing a subwoofer driver the correct pairing of a subwoofer’s RMS wattage and Ohm ratings with an amplifier’s output power rating is absolutely essential.
Frequency Response: Frequencies are measured in Hertz or Hz for short. The frequency response of speaker drivers will generally fall between 20Hz and 22kHz. At 20Hz the sound spectrum begins. Every time you double your frequency you move up one octave in scale. 20-Hertz to 40-Hertz covers the first Octave, 40Hz to 80Hz covers the next octave and so on. Subwoofer drivers are generally tuned to crossover at 80 Hertz. This can depend on the subwoofer type and the type of music you listen to.