DaytonAudio DSP-408 User Manual

4 x 8 DSP DIGITAL SIGNAL
PROCESSOR FOR HOME
AND CAR AUDIO

Model: DSP-408 User Manual

Table of Contents

2. Table of Contents

3. Product Overview/General Safety Instructions/Box Contents

4. DSP Features and Technical Specications

5. Device Connections

6. Controlling the DSP

7. Connecting to Audio Sources and Mobile Devices

8. Operating the Windows Application

10. Operating the Mobile App

2

Product Overview

The Dayton Audio DSP-408 is a feature-rich 4 input/8 output digital signal processor that was de-

signed to give you the tools to contour your audio system to t your tastes. The DSP-408 allows
the user to choose the application of their device. With two methods of powering the DSP, this
processor is the perfect addition to your home or car audio system. The DSP-408 can be con­trolled via a Windows PC, Android device, or an iOS device, unlike most mobile apps for DSPs,
the DSP-408 app offers the user full control over the DSP features.

Features:

● 4-channel high-level inputs with signal sensing turn-on

● 4-channel low-level RCA inputs

● Bluetooth 4.0 input for wireless connectivity and aptX audio streaming are available when
paired with the Dayton Audio DSP-BT4.0 (Purchased separately)

● 8-channel 3.5V RCA low-level outputs

● Real time signal processing control

● 80 bands of parametric EQ adjustment (10 bands per channel)

● DSP-RC multi-function wired remote allows for preset select and volume control (Purchased
separately)

● DSP-408 mobile tuning app for Android phones/tablets which features full control of the

DSP-408’s features

● Dimensions (WxHxD): 6.53" x 1.02" x 4.55" (165.9 x 25.91 x 115.6 mm)

Box Contents:

● 1 x DSP-408 processor

● 1 x Power adapter — Input: (100~240V, 50/60 Hz, 1A) Output: (12V, 1.5A)

● 1 x High-level input harness

● 1 x USB cable

● 2 x Mounting brackets

● 4 x Mounting screws

● 1 x Introduction card

Important Safety Instructions

To reduce the risk of electric shock, do not remove cover. No user serviceable

parts inside. Refer servicing to qualied personnel. To reduce the risk of re and

shock do not expose unit to rain or moisture. The unit should be connected to
an earth grounded AC electrical socket. The unit should be operated in a well
ventilated area. Minimum clearance is 2 inches from the ventilation openings.

3

DSP Features and Technical Specications

Inputs Outputs

4 RCA preamp inputs 8 RCA preamp outputs
4 channel high-level inputs

1 USB A for PC control
1 USB B for DSP-BT4.0 connection
1 RJ11 for DSP-RC connection
1 12V DC power input jack

Bluetooth Functionality

● Real time DSP conguration over Bluetooth with the mobile app for Android and iOS devices

● Audio streaming from a Bluetooth device (utilizing aptX when supported)

USB Connection Functionality

● Real time DSP conguration using Windows PC software

● Audio playback via a Windows PC device

APP/Software Features

● 10 band parametric equalizer per channel

●

Variable crossovers: High/Low/Band-Pass slopes 6/12/18/24 dB, Linkwitz/Butterworth/Bessel/Riley

● Time delay: 0 to 277 cm or 8.1471 ms adjustable in 1 cm steps

● Input/Output mixing to customize signal path

● Preset les can be loaded, saved, recalled, or deleted

● Software controllable level attenuation on preamp and high-level inputs

● Customizable name/ID for each preset

DSP Features

● Analog Devices ADAU1701 SigmaDSP 28-/56 Bit Audio Processor

● Minimum/maximum voltage protection

● Reverse voltage protection

● Mute circuit and delay

Technical Specications

● High level input impedance: . . 180 ohms

● RCA input impedance: .......... ≥20K ohms

● Frequency response: ............20Hz-20KHz

● Output impedance: ................<50 ohms

● Maximum input level: ............≥3.2V

● Signal to noise ratio: ..............≥115dB.

● Remote out current: ..............>500mA

● Operating voltage: .................9-17V

4

Device Connections

DSP-408 Callouts

1. 12V wiring harness 5. Remote input

2. Turn-on selector 6. PC control input (use with DSP-RC)

3. 12V DC jack input 7. Bluetooth dongle input (use with DSP-BT4.0)

4. RCA inputs 8. RCA outputs

12V Wiring Harness

1

2

Note: When using the DSP in the “SPK” mode
there may be a pop after turn off. Because of this,
we recommend the user installs a capacitor inline
with their tweeters to prevent any sort of damage.

3

4

5

6

7 9

8

10 12

11

PIN COLOR FUNCTION

1 WHITE CH 1 +
2 WHITE/BLACK CH 1 ­3 GR AY CH 2 +
4 GRAY/BLACK CH 2 ­5 GREEN CH 3 +
6 GREEN/BLACK CH 3 ­7 PURPLE CH 4 +
8 PURPLE/BLACK CH 4 -

9 RED REMOTE IN
10 BLUE REMOTE OUT
11 YELLOW 12V+
12 BLACK GROUND

5