Soundmax SX-LX4125.4D 4 Ohms

Enjoy 5% off all pre-order products.

The discount is automatically applied to your cart.

The announced delivery times are given as an indication and expressed in working days.

They may be extended in case of supplier holidays, carrier delays, or unfavorable weather conditions.

We make every effort to keep you informed and ensure the delivery of your order as quickly as possible.

If you have any questions, please contact us via the website chat or consult our General Terms and Conditions of Sale, available at the bottom of the page.

The Sound Auto Concept Team

To track your order, we invite you to use the Chat available at the bottom right of the store ➡️⬇️

If you have any questions regarding your order, our team will respond to you as soon as possible 🙂

We offer several delivery options to meet your needs.

Shipments offered from €49 are made via a relay point.

If you prefer home delivery, a surcharge may apply when ordering.

For shipments outside France, please refer to our "Deliveries and Returns" section for more information.

Please do not hesitate to contact us for more details!

Our team is at your disposal by telephone at 09.85.13.66.35 or the Chat box to help you select the products that suit you best 💡😉

We can help you create a cart directly via live chat if you are unsure about your choice. Our team will be happy to offer you their technical expertise 💪🙂

Highlights

• 125W RMS x 4 @ 4 Ohms – stable and clean power for front or rear stage systems
• High-efficiency Class D – low consumption, minimal heat, ideal for small spaces
• 190W RMS x 4 @ 2 Ohms / 370W RMS x 2 bridged @ 4 Ohms – total flexibility
• Frequency response 10 Hz – 45,000 Hz: absolute precision across the entire audio spectrum
• Adjustable HP (50–500 Hz) + LP (50–250 Hz) filters for precise active filtering
• High-Level input – direct OEM integration without an adapter

Description

The Soundmax SX-LX4125.4D is a 4-channel Class D amplifier designed for those seeking stable power, low heat generation, and great flexibility in a compact form factor. With 125W RMS per channel at 4 Ohms, it effectively drives front stage speakers, rear speakers, or moderate-sized midbass with control and clarity. Its ability to operate at 2 Ohms (190W/channel) and in bridged mode (2 x 370W) makes it suitable for many configurations.

• Adjustable high-pass filter: 50 – 500 Hz
• Adjustable low-pass filter: 50 – 250 Hz
• Input sensitivity: 0.25 – 8V – compatible with OEM and aftermarket sources
• High-Level input for direct connection to factory head units
• SNR 90 dB: clean sound without interference
• Available at Sound Auto Concept, your car audio specialist.

Technical Specifications

Why choose it?

• Compact Class D: maximum efficiency, minimal heat, easy installation anywhere
• 125W x 4 with the possibility to go up to 190W x 4 @ 2Ω or 370W x 2 bridged
• Adjustable HP + LP filters: perfect for active or passive configurations
• High-Level input: OEM integration without additional DSP or adapter

⚠️ IMPORTANT - INSTALLATION: It is IMPERATIVE to connect this amplifier to the impedance recommended by the manufacturer and to use the recommended wire gauge. For amplifiers over 2000W RMS, the vehicle's original battery is no longer sufficient. It is strongly advised to adapt the power supply (additional battery, reinforced alternator) to the amplifier's consumption to avoid any risk of damage and ensure optimal performance. WARNING: Any voltage drop below 12V can damage the product.