SPA2400DSP 2400W Subwoofer Amplifier with DSP

Dayton Audios SPA2400DSP true 2 x 1,200 watt digital switching plate amplifier features advanced signal processing control that every audio enthusiast wants. This power and flexibility is accessible via PC-GUI software, our innovative single-knob LCD control panel, or an iPhone feature management app.

Note: The SPA2400DSP amplifiers outputs produce up to 1,200 watts each giving you a total of 2400 watts although the channels are not bridgeable into a single load.

Feature Control Panel Key

Power ON LED: Green LED when amp is operating normally
Standby (STB) LED: Red when amp is in energy saving "stand by" state
Limit LED (Yellow): Lit when Limiter is active
Feature Setup: Single knob digital actuator with single/double-click enabled with rotary scrolling to navigate the amps extensive feature menu.
Feature controller display (128 x 64 pixel): Liquid Crystal Matrix (LCM) displays all of the feature menu and status.

Amp System Block Diagram

DSP Processing Block Diagram

Controlling your subwoofer via PC GUI

USB Link Indicator: When communication via USB with amp is successful, the GUIs "LED" indicator will light blue. Otherwise, the "LED" stays dark.
Processing Selection: Selecting any icon can effect change in near-real time (NRT) to the amps audio outputs.
Main Control Screen: Control each DSP processing parameters: Threshold Power, Attack Time, Release, along with 5 digital PEQ bands.
Sub In-Out Monitor: Monitor the input signal and sub output signal levels.
Tools Drop Down Menu: Utilities for amp DSP management, plus Wi-Fi settings.
NOTE: The GUIs graphical trace is NRT editable. Bands can be shaped by cursor or direct input and/or sliders.

Detailed tool tips (shown a-d above):

5 Band Digital PEQ
a) Band On/Off: Bypass or enable by clicking the colorized 1 ~ 5 buttons.
b) Center Frequency (CF): Adjust Center Frequency of each EQ band, 20 ~ 200Hz. Steps: 1Hz.
c) Gain: Adjust the EQ gain (apparent volume), -12 ~ +6dB. Steps: 1dB.
d) Q (EQ Width): Adjust the "Q" value, 0.4 ~ 11. Steps: 0.1Q.

Limiter: Adjust, optimize, save, recall.
a) Threshold: Adjust the limiter "threshold power", 0 ~ -12dB. Steps: 0.1dB
b) Attack: Adjust limiter "attack time". This controls the allowed amount of time signals may be over threshold power. Range of adjustment is 0.1 ~ 100ms (milliseconds). Steps: 0.1ms
c) Release: Adjust limiters "release time". When limiter is triggered, this control adjusts the time allowed to restore full power. Adjustable range 100 ~ 5000ms. Steps: 0.1ms.

Custom algorithms apply intelligent multi-band room equalization (iEQ™)

The included 20Hz-capable iEQ microphone allows estimation of your rooms natural frequency response characteristics and precisely applies PEQ filters to compensate for inevitable response anomalies. Plug the microphones 3.5mm "male" fitting into the amp panels "female" jack labeled "Mic In" for this procedure.

Measurement of room acoustics requires moving your EQ mic through the rooms listening and/or viewing "sweet spots", typically affixed to a photo tri-pod for best acoustical results. Only three different positions are required, as testing actually captures 12 measurements per location (automatically averaging each result).

Starting iEQ: Selecting the GUIs button starts custom calibration test tones. After moving your mic to three different listening locations and estimations are finished, the system screen will display the final measured and calculated post-equalized frequency response results.

Controlling the Subwoofer via the Control Panel

Sub Remote Control iPhone App now available:

Specifications: • Power output: 1,200 watts x 2 RMS into 4 ohms, THD+N <0.1% • Signal to noise ratio: 102 dB (A-weighted) • Power requirements: 110~120/220~240 VAC selectable, 50/60 Hz • Amplifier dimensions: 15.5625" H x 9.5" W x 2.875" D; Amplifier cutout: 14.375" H x 8.25" W • Control panel dimensions: 3.5" H x 5.75" W x 1.25"; Control panel cutout: 2.5" H x 4.75" W.