DaytonAudio SPA1200DSP User manual

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FCC Statement
1. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:
(1) This device may not cause harmful interference.
(2) This device must accept any interference received, including interference that may cause
undesired operation.
2. FCC Radiation Exposure Statement: Mobile device.
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled
environment. In order to avoid the possibility of exceeding the FCC radio frequency exposure
limits, Human proximity to the antenna shall not be less than 20cm (8 inches) during normal
operation.

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Operang Guide: Dayton Audio SPA1200/2400DSP
Subwoofer Power Amplifiers
Table of Contents
Back panel and input/output (I/O) definion ...........................................................5
SPA1200DSP and SPA2400DSP wiring ......................................................................6
Feature control-panel key .........................................................................................7
Amp system block diagram .......................................................................................8
Controlling your subwoofer via PC GUI ......................................................................9
Feature menu display ..............................................................................................12
iOS remote control “app” guide .............................................................................14
Firmware update guide ...........................................................................................16
DSP and Performance Specificaon .................................................................. 20-21

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Back panel and input/output (I/O) definition
1. SPDIF coaxial input: Select between digital SPDIF and analog (XLR or RCA) audio inputs by
navigating to and electing desired “Input Source”, via the amp’s dedicated feature control menu knob or
software GUIs.
2. USB Control: Use for PC-GUI communication with custom PC software included with your amp.
Please refer to PC-GUI user guide on page 5. USB also allows for firmware update by Dayton Audio
release. See Page 10 for more on the system “flash” update process.
3. Analog input attenuation: Affects analog balanced and unbalanced inputs only.
o Normal: No attenuation.
o Hi: Attenuates input signal -6dB.
4. MIC IN: Services amp’s Intelligent Room-EQ (iEQ ™) microphone connection
5. Power Mode: Select the either energy-saving or “always-on” power mode
o Auto: Amp goes into standby after no detected signal input for 15 minutes*
o On: Amp is always on, regardless of input signal status.
* Amp will automatically turn on typically in one second or less once audio signals are resumed.

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SPA1200DSP and SPA2400DSP wiring
SPA1200DSP
SPA2400DSP - NOTE: Do NOT bridge outputs. Dual voice coil and dual driver loads only!

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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 amp’s extensive feature menu.
• Feature controller display (128 x 64 pixel): Liquid Crystal Matrix (LCM) displays all of the feature menu and
status.

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Amp system block diagram
SPA2400DSP

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DSP processing block diagram
Controlling your subwoofer via PC GUI
The PC GUI (literally, “Personal Computer, Graphical User Interface”) is the primary mode to access
and adjust the DSP for subwoofer optimization. Follow all safe practices and contact Dayton Audio
if you require assistance.
Read Setting: Read all the setting from amp
Save Settings to File: Save current settings to PC
Load Settings from File: Load previous saved setting to AMP
Reset to default setting: Reset the AMP to factory default
See next page: For a full depiction of the primary screens and detailed identification of each of your amp GUI’s controls.

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• USB Link Indicator: When communication via USB with amp is successful, the GUI’s “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 amp’s 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 GUI’s graphical trace is NRT editable. Bands can be shaped by cursor or direct input and/or sliders.
Detailed tool tips (shown a-d above):
o 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.
o 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 of time signals may be over threshold power.
Range of adjustment is 0.1 ~ 100ms (milliseconds). Steps: 0.1ms
c) Release: Adjust limiter's “release time”. When limiter is triggered, this control adjusts the time
allowed to restore full power. Adjustable range 100 ~ 5000ms. Steps: 0.1ms.