This product is sold brand new. A manufacturer warranty applies only when the manufacturer provides one for this item.
Return requests must be submitted within 14 days of delivery and approved by our RMA department before the item is shipped back. Non-defective returns may be subject to a minimum 25% restocking fee and return shipping charges. Unauthorized returns are not eligible for credit or refund. Read the full return policy.
The Dayton Audio SPA300-D is a 1-channel Class-D subwoofer plate amplifier designed for powered subwoofer builds or upgrades. Its compact chassis is suited to cabinets that cannot accommodate bulky traditional amplifiers. Output is 300 watts RMS and 600 watts maximum at 4 ohms; frequency response is 20–200Hz.
Set the variable low-pass crossover from 40–200Hz with an 18dB/octave slope, adjust gain to match the preamp source, and use the two-position phase switch to help compensate for differences between the subwoofer and main speakers. A switchable 6dB bass boost is centered at 30Hz. Auto turn-on keeps the amp in standby until it detects an input signal, and the power/clipping LED indicates amplifier status.
Connectivity includes left/right low-level RCA-style inputs, one powered output, solderless subwoofer-driver disconnect terminals (red = 0.205", black = 0.11"), and an IEC power jack. The product details describe 2x RCA inputs, while the specifications list Inputs: 1. The front USB output supplies 5V at 500mA when the amplifier is on or in standby. A voltage selector supports 115/120VAC or 230/240VAC operation, and a main power switch provides power disconnect.
Specifications include 200mV input sensitivity, 101dB A-weighted SNR, 1.5% total harmonic distortion, and 300 watts power consumption. The amplifier measures 8-1/16" H x 7-1/16" W x 2-1/8" D, with a 7" H x 6" W cutout, and weighs 2.2 lbs.
This product is sold brand new. A manufacturer warranty applies only when the manufacturer provides one for this item.
Return requests must be submitted within 14 days of delivery and approved by our RMA department before the item is shipped back. Non-defective returns may be subject to a minimum 25% restocking fee and return shipping charges. Unauthorized returns are not eligible for credit or refund. Read the full return policy.