4. OPERATIONS

Setting the operating level

The gain controls allow you to set the nominal operating level of the amplifier from 250mV to 2.5V for RCA inputs or 500mV to 5V for speaker level inputs. This wide adjustment range accommodates virtually any source unit brand.

Improving bass sound

The amplifiers feature a narrow-frequency band bass boost circuit (known as “high-Q”). The bass boost control acts much like an equalizer with switchable gain fixed at 50Hz. Use this control to 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.

Note:

If you don’t want to boost the bass frequencies, set this control to “OFF.”

Designing a more advanced system

Freq (Hz) controls

The crossover frequency is fully adjustable between 50Hz and 300Hz (30-300Hz

on the APX1301). Use the high-pass/low-pass filter controls, along with your speaker manufacturer’s recommended crossover frequencies, to quickly design a more advanced system.

Note:

If you set either of the X-Over mode switches “OFF,” varying the Freq (Hz) control has no effect.

X-Over mode switches

These switches are equipped with 12dB per octave electronic filters for precise frequency attenuation with minimal phase distortion. To activate each filter, slide the X- Over mode switch to either HP or LP (APX4241 and APX2121 only).

Connecting a source unit without RCA outputs

The speaker level inputs provide connections for a high-level stereo source. Use them if your source unit does not have RCA outputs.

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Clarion APX1301E, APX4241E Operations, Setting the operating level, Improving bass sound, Designing a more advanced system
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APX2121E, APX4241E, APX1301E specifications

The Clarion APX series, consisting of the APX1301E, APX2121E, and APX4241E, represents a versatile lineup of car audio components designed to elevate the in-car listening experience. These models cater to a range of needs, from entry-level enthusiasts to audiophiles seeking superior sound quality.

Starting with the APX1301E, this model features a powerful 13 cm woofer that delivers clear and robust bass while maintaining a balanced mid-range response. It employs a wide frequency response range, ensuring that all musical genres sound vibrant. The speakers are designed with high-quality materials that enhance durability and performance, including a lightweight yet rigid cone and an efficient ferrite magnet. The APX1301E is ideal for users looking for an upgrade from factory-installed speakers without breaking the bank.

Next in the series is the APX2121E, which boasts a two-way coaxial design that incorporates a 21 cm woofer alongside a separate tweeter. This configuration offers improved sound staging and clarity, with enhanced high-frequency response that brings vocals and instruments to life. The APX2121E utilizes advanced technologies like a rubber surround for better damping and a neodymium magnet structure that minimizes distortion. This model is perfect for those seeking a full-range sound solution that fills the car cabin with rich audio.

Finally, the APX4241E steps up the game with a four-way speaker system that provides an expansive frequency response and competitive performance. Featuring a 24 cm woofer, mid-range drivers, and high-frequency tweeters, it creates a surround-like sound experience in the vehicle. The APX4241E is engineered with meticulous attention to detail, including features like a butyl rubber surround for improved longevity and an innovative crossover network that ensures smooth transitions between drivers. This makes it an excellent choice for audiophiles who demand high fidelity and dynamic bass.

All three models in the Clarion APX series are compatible with a variety of audio systems and offer easy installation options. They also possess robust build quality, making them reliable for everyday use. With their diverse range of features and technologies, the APX1301E, APX2121E, and APX4241E are sure to cater to different listening preferences, making them noteworthy choices in the competitive car audio market.
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