Power Connections

3)Trim the power cable within 18 inches (45.7mm) of the positive battery post and splice in a in-line fuse holder. DO NOT install the fuse at this time.

4)Strip 1/2 inch (12.7mm) from the battery end of the power cable and crimp a large ring terminal to the cable. Connect the ring terminal to the positive (+) battery post.

5)Prepare the ground wire for attachment to the amplifier by stripping 5/8” of insulation from the end of the wire, Insert the bare wire into the GND terminal and tighten the set screw to secure the cable in place. Prepare the chassis ground by scraping any paint from the metal surface and thoroughly clean the area of all dirt and grease. Strip the other end of the wire and attach a ring connector. Fasten the cable to the chassis using a non-anodized screw and a star washer.

NOTE: It is important to upgrade the ground connection between the negative (-) battery post and the vehicle body or chassis to achieve optimum electrical performance.

6)Prepare the REM turn-on wire for attachment to the amplifier by stripping 5/8 inch (15.9mm) of insulation from the end of the wire. Insert the bare wire into the REM terminal and tighten the set screw to secure the wire in place. Connect the other end of the REM wire to a switched 12 volt posi- tive source. The switched voltage is usually taken from the source unit’s remote amp on lead. If the source unit does not have this output available, the recommended solution is to wire a mechanical switch in line with a 12 volt source to activate the amplifier.

7)Securely mount the amplifier to the vehicle or amp rack. Be careful not to mount the amplifier on cardboard or plastic panels. Doing so may enable the screws to pull out from the panel due to road vibration or sudden vehicle stops.

8)Connect from source signal by connecting the RCA audio cables to the input jacks at the amplifier or by connecting speaker level signal to RCA audio cables and/or RCA jacks.

9)Connect the car speakers. Speakers should be 4 Ohms. If connecting one speaker per channel as shown in the diagrams (except where noted on D3 600.1/D3 1000.1). Strip the speaker wires 1/2” (12.7mm) and insert into the speaker terminal block, then tighten the set screw to secure into place. Be sure to maintain proper speaker polarity. DO NOT chassis ground any of the speaker leads as unstable operation or damage to the amplifier and/or speaker may result.

Audio Input Connections

Source Unit Audio Cables Connected

to the RCA Inputs

D3 400.2, D3 1000.1, D3 600.1, D3 500.4 specifications

Diamond Audio Technology has built a robust reputation in the car audio industry by focusing on high-performance audio solutions. Their D3 series, encompassing the D3 1000.1, D3 400.2, D3 500.4, and D3 600.1 amplifiers, showcases an impressive range of features and advanced technologies designed for audiophiles and casual listeners alike.

The D3 1000.1 is a powerhouse mono amplifier that delivers an impressive 1000 watts RMS at 1 ohm. One of its standout features is the Class D circuitry, which enhances efficiency and minimizes heat generation, allowing for a compact design without compromising power output. The inclusion of a variable low-pass filter allows users to tailor the frequency response, ensuring that bass notes are delivered with exceptional clarity and precision. Additionally, the built-in bass boost feature can enhance low-frequency performance, making it ideal for subwoofer applications.

Next in line is the D3 400.2, a versatile 2-channel amplifier designed for driving both component and coaxial speakers. With a power output of 400 watts RMS at 2 ohms, it strikes a balance between performance and practicality. The amplifier boasts a high-level input feature, allowing for easy integration with factory audio systems. Its adjustable crossover settings enable users to customize the sound profile to suit their preferences, ensuring a rich and immersive auditory experience.

The D3 500.4 acts as a 4-channel amplifier, providing versatility for multi-speaker setups. Delivering 500 watts RMS at 2 ohms, this model excels in driving both front and rear speakers simultaneously. It features a built-in high-pass filter that helps to protect speakers from frequencies they can’t handle while enhancing overall sound quality. Its compact design allows for seamless installation in various vehicle types, ensuring that space constraints do not compromise audio fidelity.

Lastly, the D3 600.1 is another mono amplifier that fits perfectly into the D3 lineup. With a power output of 600 watts RMS at 1 ohm, it offers substantial bass performance suitable for any subwoofer system. It also employs advanced thermal management technology, ensuring consistent performance while preventing overheating during prolonged use. The D3 600.1 features a full-range Class D design, combining efficiency with power that fans of deep bass will appreciate.

In conclusion, the Diamond Audio Technology D3 series amplifiers — the D3 1000.1, D3 400.2, D3 500.4, and D3 600.1 — offer an impressive blend of power, efficiency, and versatility. Their advanced technologies and user-centric features make them a top choice for anyone seeking to enhance their car audio experience. Whether you're an audiophile seeking the ultimate sound quality or a casual listener wanting to boost the overall performance of your vehicle's audio system, the D3 series has something to offer.