Description
Description
The Synergy SYN 150.4D is a high-end 4-channel amplifier built for serious car audio enthusiasts, delivering 150W per channel at 4Ω (14.4V) with full active control via a x10 frequency multiplier for precise, adaptable tuning.
- Power @ 4 Ohm: 150w x 4 @ 14.4v — Four channels of solid, clean power to drive a complete front-stage or rear-fill with headroom for dynamic music passages.
- Power @ 2 Ohm: 230w x 4 @ 14.4v — Higher current capability for demanding loads, enabling stronger performance from compatible speakers.
- Power @ 4 Ohm Bridged: 450w x 2 @ 14.4v — Bridging two channels concentrates output for a dedicated sub or mono applications with substantial punch.
- Frequency Response: 20hz – 20Khz — Extends across the full audible range, preserving musical detail from deep bass to crisp highs.
- THD @ 4 ohm: 0.1% — Very low total harmonic distortion at rated load, contributing to cleaner, more accurate sound.
- Signal to Noise Ratio: >85db — Higher SNR reduces hiss and extraneous noise in quiet passages, improving clarity in low-volume sections.
- Damping Factor: >200 — Strong control of speaker motion for tighter bass and more accurate transient response.
- Subsonic Filter: 10hz – 50hz — Helps protect speakers from ultra-low frequencies and maintain woofer control in bass-heavy programs.
- Low Pass Filter: 35hz – 250hz — Tailors the amplifier’s output to subwoofers or dedicated woofer ranges, reducing unwanted high-frequency energy.
- High Pass Filter: x1 20hz – 800hz; x10 200hz – 8khz — Flexible high-pass configurations for precise channel tuning across multiple speakers or sub duties.
- 4 GA Power & Ground Terminals — Heavy-gauge inputs designed for secure, reliable high-current connections in demanding installs.
- 16v Working Voltage — Designed to operate within the vehicle electrical environment, aligning with typical automotive power levels.
- Size: 9.45” L x 9.45” W x 2.44” H — Compact footprint for easy mounting in a variety of vehicle compartments.
- All SYN series amplifier feature: Custom high mass, thermally optimized aluminum heat sink casing; Overbuilt power supplies and output sections with high-grade components; Heavy duty double sided through hole PCBs with thick solid copper traces; Nickel plated locking RCA inputs/outputs; Single 1/0 and 4 gauge nickel plated power and ground inputs; Nickel plated 8 gauge speaker outputs; Input sensitivity 6V – 200mV; +18db Remote Gain control with power and clipping indicator lights; Multi-way fully intelligent circuitry for maximum protection
The SYN 150.4D is designed for flexible multi-channel builds, excelling in four-channel front-stage configurations or when paired with bridged operation for a dedicated sub/channel. Its robust heat management, precision filtering, and comprehensive protection circuitry make it a reliable choice for demanding daily-driven systems and performance-focused installations alike.

