Introduzione
The Kicker CXA300.4 is a versatile 4-channel amplifier designed to enhance your car audio system. It delivers 40 watts RMS to each of your front and rear speakers, significantly improving sound quality over standard car radio amplifiers. For powering small subwoofers or high-performance speakers, the CXA300.4 can be bridged into 2-channel mode, providing 150 watts RMS per channel. This manual provides essential information for proper installation, operation, and maintenance of your amppiù vivu.
Product Overview
Familiarize yourself with the Kicker CXA300.4 amplifier and its components.

Figura 1: Top view of the Kicker CXA300.4 ampvivificatore, mostraasing the KICKER logo and model number.

Figura 2: Angulata view di u amplifier, highlighting the power (GND, REM, +12V) and speaker output terminals on one side.

Figura 3: Angulata view di u amplifier, showing the RCA input jacks and the control panel with various adjustments.

Figure 4: Diagram illustrating the physical dimensions of the Kicker CXA300.4 amplifier: 12.44 inches (length), 7.44 inches (width), and 2.38 inches (height).
Installazione è installazione
Una stallazione curretta hè cruciale per una prestazione è una sicurezza ottimali. Hè cunsigliatu di avè questu amplificatore installatu da un tecnicu audio prufessiunale di l'automobile.
1. Locu di muntatura
- Sceglite un locu asciuttu è ben ventilatu, luntanu da a luce diretta di u sole è da fonti di calore.
- Assicuratevi chì u flussu d'aria sia sufficiente intornu à u ampdissipatore di calore di u lifier.
- Mount securely to prevent movement during vehicle operation.
2. Wiring Connections
Always disconnect the vehicle's battery before making any power connections.
- Alimentazione (BATT +12V): Connect to the positive terminal of the vehicle's battery using a fuse or circuit breaker within 18 inches of the battery. Use appropriate gauge wire (e.g., 8-gauge or 4-gauge depending on total system power).
- Terra (GND): Connect to a clean, solid metal point on the vehicle's chassis, ensuring good electrical contact. The ground wire should be the same gauge as the power wire and as short as possible.
- Accensione à distanza (REM): Connect to the remote turn-on lead from your head unit or other switched 12V source.
- RCA Inputs (AMP1, AMP2): Connect to the RCA outputs of your head unit.
- Uscite Speaker: Connect your speakers to the appropriate terminals. Observe correct polarity (+/-). For bridged mode, refer to the amplifier's specific bridging instructions (typically marked on the amppiù vivu).

Figura 5: Detailed view of the power input terminals (GND, REM, +12V) and speaker output terminals for AMP1 è AMP2, including bridging options.
U funziunamentu di u Amppiù vivu
Una volta installatu, aghjustate u ampparàmetri di lifier per una prestazione sonora ottimale.

Figure 6: Control panel showing adjustable settings for Gain, X-OVER (crossover frequency), and Bass Boost for both AMP1 è AMP2 canali.
1. Ajustamentu di guadagnà
- Set your head unit volume to about 75% of maximum.
- Aumentà lentamente u amplifier's GAIN control until you hear slight distortion, then back off slightly.
- U cuntrollu di guadagnu currisponde à amplifier's input sensitivity to the head unit's output. It is not a volume control.
2. Crossover (X-OVER)
- The CXA300.4 features a variable crossover (50-200Hz).
- Set to "HI" for high-pass filtering (for full-range speakers, blocking low frequencies).
- Set to "LO" for low-pass filtering (for subwoofers, blocking high frequencies).
- Adjust the frequency knob to suit your speakers and desired sound.
3. Bass Boost
- The Bass Boost control (0-12dB) allows you to increase the output at 40Hz.
- Use sparingly to avoid distortion and potential speaker damage.
4. Fader
- If your head unit has a fader control, set the amplifier's FADER switch to "ON". If not, set to "OFF".
Mantenimentu
U Kicker CXA300.4 ampU lifer richiede una manutenzione minima per assicurà prestazioni à longu andà.
- Mantene u ampL'apparecchiu hè pulitu è senza polvere è detriti. Aduprate un pannu dolce è asciuttu per a pulizia.
- Ensure all wiring connections remain secure. Periodically check for loose connections.
- Avoid blocking the amplifier's heatsink fins to maintain proper cooling.
- Ùn espone micca u amplifier to excessive moisture or extreme temperatures.
Risoluzione di prublemi
Sè avete prublemi cù u vostru amplifier, riferitevi à i seguenti passi cumuni di risoluzione di i prublemi:
| Prublemu | Causa Possibile | Soluzione |
|---|---|---|
| Nisuna putenza / Nisun sonu | Blown fuse, loose power/ground/remote wire, amplifier in modu di prutezzione. | Check fuse, verify all power connections, ensure remote wire is receiving 12V. Check speaker wiring for shorts. |
| Sonu distortu | Gain set too high, improper crossover settings, damaged speakers. | Reduce gain, adjust crossover frequency, inspect speakers for damage. |
| Ampsurriscaldamentu di l'alimentatore | Insufficient ventilation, impedance mismatch, prolonged high-power operation. | Ensure proper airflow, verify speaker impedance, reduce listening volume. |
| Nisuna uscita di bassi | Crossover set to high-pass, phase issues, subwoofer wiring incorrect. | Set crossover to low-pass for subwoofers, check subwoofer polarity. |
If problems persist after following these steps, consult a professional car audio technician or contact Kicker customer support.
Specificazioni
Key technical specifications for the Kicker CXA300.4 amppiù vivu:
- Mudellu: CXA300.4
- Tipu: Four-Channel Full-Range Amppiù vivu
- Putenza RMS in uscita (4 Ohm): 40 Watts x 4 canali
- Putenza RMS in uscita (2 Ohm): 75 Watts x 4 canali
- Bridged RMS Power Output (4 Ohm): 150 Watts x 2 canali
- Crossover: Variable, 50-200Hz (HI/LO selectable)
- Bass Boost: Variable, 0-12dB at 40Hz
- Dimensioni (L x W x H): 12.44 x 7.44 x 2.38 inch
- Pesu: 5.5 liri
- Materiale: Metallu
- Culore: Neru
Garanzia è Supportu
For detailed warranty information, please refer to the warranty card included with your product or visit the official Kicker website. For technical support or service inquiries, please contact Kicker customer service directly.
Pudete truvà più infurmazioni è risorse di supportu nantu à u Negoziu KICKER nant'à Amazon.





