Cooling Efficiency Considerations, Serial Number

Protect Your Hearing!	Installation Applications	Planning Your Installation
We value you as a long-term customer. For	This amplifier is designed for operation in	It is important that you take the time to read
that reason, we urge you to practice restraint in	vehicles with 12V, negative-ground electrical	this manual and that you plan out your
the operation of this product so as not to damage	systems. Use of this product in vehicles with	installation carefully. The following are some
your hearing and that of others in your vehicle.	positive ground and/or voltages other than 12V	considerations that you must take into account
Studies have shown that continuous exposure to	may result in damage to the product and will void	when planning your installation.
high sound pressure levels can lead to permanent	the warranty.
(irreparable) hearing loss. This and all other	This product is not certified or approved for	Cooling Efficiency Considerations:
high-power amplifiers are capable of producing	use in aircraft.	The outer shell of your JL Audio amplifier is
such high sound pressure levels when connected	Do not attempt to “bridge” the outputs of this	designed to remove heat from the amplifier
to a speaker system. Please limit your continuous	amplifier with the outputs of a second amplifier,	circuitry. For optimum cooling performance,
exposure to high volume levels.	including an identical one.	this outer shell should be exposed to as
While driving, operate your audio system in		large a volume of air as possible. Enclosing
a manner that still allows you to hear necessary		the amplifier in a small, poorly ventilated
noises to operate your vehicle safely (horns,		chamber can lead to excessive heat build-up
sirens, etc.).		and degraded performance. If an installation
		calls for an enclosure around the amplifier,
Serial Number		we recommend that this enclosure be
In the event that your amplifier requires		ventilated with the aid of a fan. In normal
service or is ever stolen, you will need to		applications, fan-cooling is not necessary.

have a record of the product’s serial number.

Remote Turn-On

Please take the time to enter that number in

Connector

(pg. 6)

the space provided below. The serial number

+12 V Power

Chassis Ground

Speaker Outputs

can be found on the bottom panel of the

Fuses

Connector

(pg. 9)

(pg. 5)

amplifier and on the amplifier packaging.

Serial Number:

	Left & Right	Output Polarity			Input Sensitivity		Bass Boost
Preamp Output Jacks			Switch		Control		Control
	(pg. 8) Left & Right				(pg. 6)		(pg. 8)
Remote	(pg. 8) Left & Right			(pg. 7)Power/Protection		Filter
Level Port	Preamp Input Jacks			Status Indicator		Frequency Selector
(pg. 8)		(pg. 6)			(pg. 9)	(pg. 7)
	Preamp	Amplifier
Remote	Outputs	Inputs
Level	LEFT	LEFT
Port
					Power
			Reversed Normal			40 130	Off +12dB
			Output Polarity		min max	40 130	Off +12dB
					Input Sens.	LP Filter Frequency (Hz)	Bass Boost
	RIGHT	RIGHT

Mounting the amplifier upside down is strongly discouraged.

If mounting the amplifier under a seat, make sure there is at least 1 inch (2.5 cm) of space above the amplifier’s outer shell to permit proper cooling.

Safety Considerations:

Your amplifier needs to be installed in a dry, well-ventilated environment and in a manner which does not interfere with your vehicle’s safety equipment (air bags, seat belt systems, ABS brake systems, etc.). You should also take the time to securely mount the amplifier using appropriate hardware so that it does not come loose in the event of a collision or a sudden jolt to the vehicle.

Stupid Mistakes to Avoid:

•Check before drilling any holes in your vehicle to make sure that you will not be drilling through a gas tank, brake line, wiring harness or other vital vehicle system.

•Do not run system wiring outside or underneath the vehicle. This is an extremely dangerous practice which can result in severe damage to your vehicle and person.

•Protect all system wires from sharp metal edges and wear by carefully routing them, tying them down and using grommets and loom where appropriate.

•Do not mount the amplifier in the engine compartment, under the vehicle, on the roof or in any other area that will expose the amplifier circuitry to the elements.

2	JL Audio®	3
J2_500_1_MAN_CH.indd	2-3	4/22/09 11:24:40 AM

J2500.1 specifications

The JL Audio J2500.1 is a powerful monoblock amplifier primarily designed for serious music enthusiasts and audiophiles who demand high-quality sound reproduction in their car audio systems. With a robust output of 2500 watts RMS at 1 ohm, this amplifier is engineered to deliver deep, thunderous bass without sacrificing clarity or detail.

One of the standout features of the J2500.1 is its patented NexD technology, which allows for efficient and precise power delivery. This technology optimizes the amplifier's performance, minimizing distortion and maximizing sound fidelity. The amp's efficient Class D design not only contributes to lower power consumption but also helps in keeping the unit relatively cool during prolonged use, avoiding overheating issues that can plague less efficient amplifiers.

The amplifier is equipped with advanced thermal management features, including internal temperature sensing and a built-in fan for additional cooling when required. This ensures that the J2500.1 can perform optimally, even under the most demanding conditions.

Another significant characteristic of the JL Audio J2500.1 is its adjustable low-pass filter, which allows users to tailor the frequency response to suit their specific audio needs. The filter can be set between 30 Hz and 200 Hz, enabling seamless integration with subwoofers and other components in a car audio setup. Additionally, it features both a variable bass boost and a subsonic filter, offering further control over the audio output to enhance the listening experience.

The amplifier's construction boasts durability and sophistication, featuring a rigid chassis and high-quality components designed to withstand vibration and harsh automotive environments. Its sleek aesthetic, combined with practical terminal placement, makes installation straightforward, catering to both professional installers and passionate DIY enthusiasts.

In essence, the JL Audio J2500.1 is engineered for those seeking uncompromising performance and scalability in their sound systems. With its powerful output, advanced technologies, and user-friendly features, it stands out as a premier choice for delivering exceptional audio quality, especially for bass enthusiasts looking to elevate their in-car music experience. Whether used in a dedicated subwoofer setup or as a part of a more complex audio system, the J2500.1 will undoubtedly impress even the most discerning listeners.