Installation Warnings and Tips

WARNING

Playing loud music in an automobile can hinder your ability to hear trafﬁc, as well as permanently damage your hearing.

We recommend listening at low levels while driving. JBL accepts no liability for hearing loss, bodily injury or property damage resulting from use or misuse of this product.

YOUR CAR AND BASS REPRODUCTION Depending on the size of the vehicle’s interior listening space, reproduced frequencies below 80Hz may be boosted by nearly 12dB per octave as frequency decreases. This effect, commonly known as transfer function, or cabin gain, plays an important role in deﬁning the in-car frequency response of your subwoofer. It is displayed graphically, along with freespace response, on the enclosed data sheet for your GTi subwoofer.

POWER-HANDLING

LIMITATIONS

The power-handling capacity of any subwoofer is related to the excursion limit of its suspension and its ability to dissipate heat. A speaker reaches its excursion-limited power-handling capacity when its suspension is stretched to its limit. The excursion curve shown on the Enclosure Design Sheet (included with your woofer) displays cone excursion at the input power level required to drive the woofer to maximum linear excursion (Xmax). The input power shown may be used as instantaneous input only.

Thermal power handling is determined by the amount of heat that may be dissipated by the driver’s voice coil. The power-handling rating assigned to your GTi Series subwoofer is its thermal-power-handling rating. This rating assumes a clean (unclipped) signal. A clipped waveform has much higher average power, due to the longer duty cycle at the top and bottom of the waveform; it will heat the woofer’s voice coil faster than a clean signal and may damage the voice coil. A square wave has a 100% duty cycle and is extremely dangerous for any speaker. Audible distortion in the output of your woofer is an indication that your ampliﬁer may be clipping, which could damage your speakers over time.

MkII automotive, MkII W10GTi, MkII W15GTi, MkII W12GTi specifications

JBL, a leader in audio technology, has long been synonymous with high-performance sound systems. Among its stellar offerings are the MkII series subwoofers, including the W12GTi, W15GTi, and W10GTi. These subwoofers represent a fusion of superior engineering, innovative technology, and durable construction, making them ideal for automotive enthusiasts seeking to enhance their sound experience on the road.

The JBL MkII W12GTi boasts a 12-inch cone driver, designed for deep and powerful bass response. It's constructed with a patented dual voice coil to provide effective power handling while minimizing distortion. This subwoofer features JBL’s signature GTi technology, which includes a high-temperature voice coil to ensure longevity and performance under heavy usage. Its sleek design includes a rigid aluminum frame that helps reduce unwanted vibrations, enhancing sound clarity and precision.

Meanwhile, the MkII W15GTi, with its larger 15-inch driver, takes bass amplification to another level. The W15GTi is engineered for even deeper low-frequency output, making it perfect for genres that rely heavily on bass. It incorporates advanced cooling technology to dissipate heat effectively, allowing for extended playtime without compromising performance. Additionally, its robust construction ensures resilience to the demanding conditions of automotive use.

For those who prefer a more compact solution without compromising sound quality, the MkII W10GTi serves as an excellent choice. Featuring a 10-inch driver, this subwoofer is versatile and delivers impressive bass response even in smaller systems. The W10GTi utilizes a unique cone design to enhance sound dispersion, ensuring that every note is heard clearly. Its tight construction optimizes the management of air within the enclosure, further improving acoustic performance.

All three models in the MkII line share essential technologies, such as JBL’s patented Slipstream ports, which reduce port noise and enhance airflow, leading to cleaner bass output. Additionally, they feature adjustable frequency response, allowing users to customize their listening experience according to personal preferences and vehicle acoustics.

In summary, the JBL MkII W12GTi, W15GTi, and W10GTi subwoofers are exceptional products for automotive sound systems. Their advanced technologies, impressive power handling capabilities, and robust designs make them ideal choices for audiophiles and casual listeners alike, setting a new standard in mobile audio performance. Whether you’re looking for deep rumbling bass or a balanced audio output, JBL’s MkII series delivers unparalleled value and performance for the modern car audio enthusiast.