3.Mark the location for the mounting hole screws by positioning the amplifier where you wish to install it. Use a scribe or mounting screw, inserted through each of the amp's mounting holes, to mark the mounting surface. If the mounting surface is carpeted, measure the hole centers and mark with a felt tip pen.

4.Drill pilot holes in the mounting surface for the mounting screws. Place the amplifier in position, and attach the amplifier to the mounting surface securely using screws.

Connecting the amplifier

Before doing any wiring, look through this manual and identify the diagrams to follow for power, input and speaker connections for your particular installation. Be sure you understand all the connections before you proceed.

1.Connect the amplifier’s power ground terminal to the closest point on the chassis of the car. Keep this ground wire to less than 39" (100 cm) in length. Use 4 gauge (or heavier) wire.

2.Connect the remote terminal to the remote output of the head unit using

16gauge (or heavier) wire.

3.Connect an empty fuse holder within 18" (45 cm) of the car battery, and run

4gauge (or heavier) cable from this fuse to the amplifier location.

The purpose of placing a fuse in this location is to protect your vehicle’s battery in the event that this wire accidentally touches the chassis ground on its run to the amplifier.

4.Check that the fuse holder is empty. Then connect the fuse holder to the "BATT+" connection on the amplifier.

5.If multiple amplifiers are being used in your system, either:

•Run a separate pair of cables from the battery and a chassis ground point to each amplifier. Each (+) cable must have its own inline fuse.

-or-

•Run a #0 cable from the fuse holder at the battery to a distribution block at or near the amplifier's location. Then run separate cables from the amplifier to this distribution block and to independent chassis ground points.

6.Connect all line inputs and outputs (if used) using high-quality cables. Connect all speakers, following the diagrams in this manual. Be sure to observe proper polarity to avoid audio phase problems.

7.Insert fuse(s) into the battery fuse holder(s).

8.Recheck all connections before powering up the amplifier.

9.Set all level controls to minimum position, and set all crossover controls/switches to the desired frequency points.

10.Power up the head unit and the amplifier. Then set the volume control on the head unit to about 3/4 volume, and adjust the amplifier’s input level control(s) to just below the level of distortion.

11.Further fine tuning of the various controls may be necessary to obtain best results.

CX2500D • CX3500D Amplifier User’s Manual - page 4

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Boss Audio Systems CX2500D, CX3500D specifications Connecting the amplifier
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CX3500D, CX2500D specifications

Boss Audio Systems has established itself as a leader in the realm of car audio, and its CX2500D and CX3500D mono amplifiers are testament to the brand's commitment to delivering powerful, high-quality sound. These amplifiers are designed for audiophiles who seek robust performance and flexibility in their sound systems.

The Boss Audio CX2500D is a compact yet powerful amplifier, delivering up to 2500 watts of peak power. Its RMS rating of 1200 watts at 1 ohm ensures that it can drive most subwoofers efficiently, providing deep bass with minimal distortion. This model features a low-pass filter, allowing users to control the frequency response and tailor the audio output to match their specific subwoofer setup. Additionally, the CX2500D includes an adjustable bass boost, which allows for enhancing the low frequency output to add punch to music genres heavily reliant on bass.

On the other hand, the CX3500D takes performance up a notch with a peak power output of 3500 watts and an RMS power of 1800 watts at 1 ohm. This additional power makes it suitable for larger subwoofer systems or for those who desire even more thump in their audio experience. Both the CX2500D and CX3500D feature a super low-frequency response, ensuring that even the deepest bass notes are reproduced with clarity.

Boss Audio's unique technology also comes into play with their proprietary Mosfet power supply, which enhances efficiency while maintaining high performance. The built-in protection circuitry safeguards the amplifier against issues such as overheating, overload, and short circuits, ensuring long-term reliability while providing peace of mind to users.

Installation has been made easier with the inclusion of a variable input gain control, allowing for seamless integration into existing audio setups. These amplifiers are also designed with a sleek, modern aesthetic, featuring a durable chassis that can withstand the rigors of automotive environments.

Overall, the Boss Audio Systems CX2500D and CX3500D amplifiers are excellent choices for car audio enthusiasts. They not only boast impressive specifications but also incorporate advanced technologies that enhance audio quality and reliability. Whether you are building a new system or upgrading an existing one, these amplifiers provide the power and performance needed to deliver an unmatched listening experience.
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