The ATG-TS1800.1D is a high-output Class-D monoblock amplifier from ATG Audio’s Transcend Series, engineered for serious subwoofer systems in car, marine, and powersports applications. Designed for 1-ohm operation with compact Class-D efficiency, this amplifier delivers strong low-frequency output while maintaining a relatively compact chassis and flexible tuning controls. Main Features Mono Class-D amplifier 1-ohm stable design 1800W max output @ 1Ω Compact chassis footprint Variable low-pass crossover Variable subsonic filter Selectable bass boost Remote bass level control included Marine-grade internal components High-efficiency Class-D circuitry Heavy-duty power terminals Designed for subwoofer applications Specs Specification Details Amplifier Class Class-D Channels Mono Power @ 1Ω 1800W x1 Power @ 2Ω 900W x1 Power @ 4Ω 450W x1 Frequency Response 20Hz – 250Hz Signal-to-Noise Ratio 96 dB Low Pass Filter 50Hz – 220Hz Subsonic Filter 10Hz – 50Hz Bass Boost 0 / 6 / 12 dB @ 45Hz Operating Voltage 12V – 15V Dimensions Approx. 9.45" x 15.35" x 3.74" Product Weight 6.4 lbs Approx. Shipping Weight ~8–12 lbs
