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4. OPERATIONS

Selecting input voltage

APX and DPX amplifiers accommodate a wide range of signal input voltages (0.2V to 8V). This wide range is split up into three ranges, which are accessible through switches located in the “Gain” area of the amplifier.

•0.2V-0.6V selects an input sensitivity range between 200mV and 600mV.

•0.6-2V selects an input sensitivity range between 600mV and 2V.

•2V-8V selects an input sensitivity range between 2V and 8V.

The gain rotary control operates within these voltage windows.

Note:

Most decks, even 4V and 5V units do not operate at full output voltage. This requires the switch to be set in the 0.6-2V range.

Setting the operating level

The gain switches allow you to set the nominal operating level of the amplifier from

0.2to 8V for RCA inputs or 500mV to 5V for speaker level inputs. This wide adjust- ment range accommodates virtually any source unit brand.

Once you set the correct range using the IVS, you must adjust the gain to match the amplifiers sensitivity to that of the source unit. The gain control is not a volume control. It exists only to allow an amplifier to be used with different models and brands of head units.

Improving bass sound

The amplifiers feature a narrow-frequency band bass boost circuit (known as “high- Q”). Acting much like an equalizer, the bass boost control lets you tune low-frequency audio response to compensate for a less than ideal subwoofer enclosure design. The added boost produces rich, full bass tones that are normally difficult to reproduce in the car audio environment.

•The APX2180, APX4360, and DPX2250 have a switchable gain that is fixed at 45Hz. If you don’t want to boost the bass frequencies, set this control to “OFF.”

•The DPX1800 and DPX11500 have a variable-frequency bass boost control from 30Hz to 125Hz. They do not have a bass boost on/off switch, but a level control that goes from 0dB to 15dB.

CAUTION

This control can dramatically increase the power output level and could cause speaker damage if you over use it.

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APX/DPX Amplifiers

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Clarion DPX2250, DPX1800, DPX11500 Operations, Selecting input voltage, Setting the operating level, Improving bass sound
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APX4360, DPX2250, APX2180, DPX11500, DPX1800 specifications

Clarion's series of amplifiers, including the APX4360, DPX2250, DPX1800, DPX11500, and APX2180, showcases cutting-edge audio technology tailored for car enthusiasts seeking high-quality sound performance. Each model is engineered to provide a powerful audio experience, whether for casual listeners or serious audiophiles.

The Clarion APX4360 is a high-performance 4-channel amplifier renowned for its robust output and versatility. It delivers an impressive power rating of 60 watts RMS per channel at 4 ohms, making it suitable for driving speakers across a wide range of configurations. This model features a variable crossover system, allowing users to customize their sound by tailoring the frequency response. Its compact design enables easy installation in various vehicle types while maintaining high-quality audio reproduction.

The DPX2250 model is a 2-channel amplifier that stands out for its reliability and efficiency. With a power output of 75 watts RMS per channel at 4 ohms, it enables superior sound clarity and dynamics. The DPX2250 incorporates advanced protection circuitry, ensuring that it remains safe from overheating and short circuits. Its adjustable bass boost feature empowers users to enhance lower frequencies, creating a fuller sound experience.

For those seeking a more compact solution, the DPX1800 is a slim profile 2-channel amplifier. It offers 90 watts RMS per channel at 2 ohms, great for those with limited installation space. One of its key features is its built-in electronic crossover, which streamlines the setup process by allowing for seamless integration into existing audio systems. The DPX1800’s lightweight construction does not compromise its output, delivering an impressive punch for its size.

The DPX11500 is a monoblock amplifier designed for dedicated subwoofer applications. With a power output of 1,100 watts RMS, it is perfect for users looking to add serious low-end power to their system. It features a variable low-pass filter and remote bass level control, allowing for fine-tuning according to user preferences. Its durable construction ensures reliability in high-demand audio environments.

Lastly, the APX2180 is another 2-channel amplifier known for its incredible versatility and value. It produces 90 watts RMS per channel at 4 ohms and includes a built-in crossover for both high-pass and low-pass operation. Additionally, the APX2180 features a sleek design that’s easy to install, making it a great option for enhancing any car audio system.

Overall, Clarion amplifiers deliver exceptional sound quality, reliability, and flexibility across different models, making them an excellent choice for anyone looking to elevate their in-car audio experience.
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