Please read carefully before attempting to use this unit

Though we tried our ensure that this manual is free and clear of errors please don t hold us responsible for printing errors.// Copyright by Cadence Acoustics LTD. www.cadencesound.com Please read carefully before attempting to use this unit

Thank you for choosing Cadence. Thank you for purchasing the Cadence DSP4.8 Digital Signal Processor utilizing a 32Bit Core DSP with 24 bit / 192Khz AD and DA convertors. All functions and adjustments are easily controlled using the DSP4.8 software included with the processor. This is a high quality product built to the highest standards that will bring you many years of listening satisfaction. With its many processing functions and extreme flexibility the DSP 4.8 will help you achieve the best sound performance from your system To get the most from your purchase we suggest reading this instruction manual carefully so you can properly understand the features and their adjustments. Please read before proceeding with installation. Before beginning any installation, follow these simple rules: 1. Be sure to carefully read and understand the instructions before attempting to install the unit. Professional installation is strongly suggested. 2. For safety, disconnect the negative lead from the battery prior to beginning the installation. 3. For easier assembly, we suggest you run all wires prior to mounting your unit in place. 4. Route all of the RCA cables close together and away from any high current wires.. Use high quality connectors for a reliable installation and to minimize signal or power loss. 6. Think before you drill! Be careful not to cut or drill into gas tanks, fuel lines, brake or hydraulic lines, vacuum lines or electrical wiring when working on any vehicle. 7. Never run wires underneath the vehicle. Running the wires inside the vehicle provides the best protection. 8. Avoid running wires over or through sharp edges. Use rubber or plastic grommets to protect any wires routed through metal, especially the firewall. 9. ALWAYS protect the battery and electrical system from damage with proper fusing. Install the appropriate fuse holder and fuse on the +12V power wire within 18" (4.7 cm) of the battery terminal. 10. When grounding to the chassis of the vehicle, scrape all paint from the metal to ensure a good, clean ground connection. Grounding connections should be as short as possible and always be connected to metal that is welded to the main body, or chassis, of the vehicle. 11.The DSP4.8 operates with any 12 volt negative ground system. If you are not sure of the type of electrical system in your vehicle consult your authorized dealer or a qualified mechanic. 12.Most systems or source units have an output terminal for connection of the remote turn-on of the DSP 4.8. If the source unit does not have a remote output then connect the remote lead to a wire that has a positive 12v when the key is turned to accessory. This will prevent unnecessary drain on the battery. 1

Installation 1. Please install the unit in the proper location according to the Figure 1 after reading the warnings. 2. Please make sure the are is well ventilated not in direct sunlight or exposed to moisture. 3. Put the processor in its location and use a marker or pencil to mark the four hole locations to be drilled for mounting. Please do not use the DSP 4.8 as a template for drilling. 4. Drill 3. mm diameter holes into mounting surface or steel panel. If mounting on MDF or wood panel, drill 3.0 mm diameter holes into surface. 6. Mount the processor using the included 4 self-tapping screws. (Note: If possible, please test the system before installation.) Installation Diagram SELF TAP SCREWS Figure 1 2

Connection Diagrams: 1 2 3 4 6 7 8 9 10 12 11 13 14 Power connection diagram CAR STEREO REM +12V GND BATTERY Figure 2 3

FIGURE 2: 1- Remote: Connection for cable to remote control and display. Connections 2- Optical Digital Input: TOSLINK, supports stereo PCM audio (S/PDIF) 48kHz/24bit 3- Coaxial Digital Input: Supports stereo PCM audio (S/PDIF) 48kHz/24bit 4- Analog Inputs Channels 1 to 4 - Input level Selector: High Level or Low Level or Auto 6- Cable for remote control. 7- Remote Control Unit 8- Power LED 9- RCA connectors for audio output to system amplifiers. 10- +12V power connection terminal. 11- REM: Remote turn on terminal, connect to remote lead from source or switched +12V. 12 & 13- Negative ground power terminals 14- USB Connection to connect DSP4.8 to computer for programming. USB 2.0 type B 1. Plan the wire routing. Keep RCA cables close together but isolated from power cables and any high power auto accessories, especially electric motors. This is done to prevent coupling the noise from radiated electrical fields into the audio signal. When feeding the wires through the firewall or any metal barrier, protect them with plastic or rubber grommets to prevent short circuits. Leave the wires long at this point to adjust for a precise fit at a later time. 2. Securely mount the DSP4.8 unit to the vehicle using the supplied hardware. Please choose a location that has adequate ventilation away from moisture and direct sunlight. Always check the opposite side of the mounting surface to ensure that there is nothing that can be damaged before fastening the unit down. 3. Prepare the ground connection wires (GND) for attachment to the power connector. Strip the wire back.12 and insert the wire into the 4 pin connector and tighten. Prepare the chassis ground location by scraping or sand any paint from the metal surface and thoroughly clean the area of all dirt and grease. Solder or crimp a ring connector to the other end of the wires and fasten both cables to the chassis using a non-anodized screw and a star washer. NOTE: Keep the length of the ground wires as short as possible. 4. Prepare the power wire (+12v) for attachment to the power connector. If you are connecting directly to the battery, or a high current circuit ensure the wire is equipped with a A fuse. Strip the end of the wire back.12 and insert into proper location on the connector and tighten.. Prepare the remote turn on (REM) wire for attachment to the power connector. Strip the wire back.12 and insert into connector and tighten.. NOTE: The remote turn on wire (REM IN) can also be connected to the vehicles +12V ACC power for vehicles without an aftermarket head unit. 7. Insert the connector into the DSP4.8 when all connections are complete. 4

DSP Function explanation: 1.Install the USB port program (CH341SER.EXE) 2.Install the interface operation software (DSP4_8_1_04_02.exe) 3.Run Software (DSP4_8.exe) COM 1 10 Open Save Input AUTO 0 - B1 B2 B3 B6 B6 B4 B7 B8 B9 B10 B11 B12 B13 B14 B1 B16 Read Save As SPDIF -10-1 Mem Del -20 ANALOG Main Vol -3 10 0-10 -20-30 -40 db Enter 1 10 100 1.000 10.000 CrossOver Delay OUT 1 2 3 4 6 7 8 TYPE HP LP SLOPE Channel HP LP IN 1L 2R 3L 4R 1L 2R 1+2 1+2 300 700 6 db ON Mute Level 12dB 0 0 0 0 0 0 0 0 OFF 18dB HP Copy 24dB BP 30dB LP 36dB 42dB Hz Hz 48dB 0 Ms Phase 0 0 0 0 0 0 0 0 PEQ: ON Band: F: 2 1 39 2 60 3 93 4 144 6 224 7 347 8 37 9 833 EQ G 10 11 1290 2001 12 3102 13 4808 EQ Q 14 742 1 110 16 17902 Reset G: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Q: 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 4.Link button: Connect the Processor and computer by USB cable, Press "COM", it shows red when disconnected and green when connected. COM COM.Select input signal: Input (1)"AUTO" Automatic identification of the digtial and analog input signal AUTO (2)"SPDIF" Fiber digital input including coaxial (3)"ANALOG" The 4 analog inputs including the Hi Level input SPDIF ANALOG 6.The main volume control: The Volume control consist of three functions:volume display,volume Main Vol button, Mute switch(it is muted when speaker is red).the main volume -3 controls all 8 channels together simultaneously. 10 0-10 -20-30 -40 db

7.Input/Output adjustments and settings: Channel OUT IN 1L 2R 3L 4R 1L 2R 1+2 1+2 Mute Level 1 2 3 4 6 7 8 0 0 0 0 0 0 0 0 Copy Phase 0 0 0 0 0 0 0 0 The settings for all 8 channels are adjusted separately,here you can control: channel selection, output mute, output volume level,channel phase, and the copy button. OUT Output channel selector, select which channel to adjust here. IN Input selector. This selects the input source channel for each output channel. The input channels are 1L, 2R, 3L, 4R, and 1+2 which is to be used for summed mono channels Mute This mutes each individual channel to assist with tuning and set up. Level Adjusts the output level for each channel. These are cut only and should be left as high possible for maximum dynamic range. Phase This allows you to set the relative phase at 0 or 180 degrees. This is a very useful setting for system tuning to get the best sub bass to mid-bass transition as well as creating a proper sound stage Copy Copy button allows you to copy the setting from one channel to another quicky. Press copy and then click the channel you wish to copy too. 8.Crossover settings: CrossOver TYPE HP LP SLOPE HP LP 300 700 6 db OFF 12dB 18dB HP 24dB BP LP 30dB 36dB 42dB Hz Hz 48dB CrossOver section consists of 4 settings: Crossover filter type, high pass frequency, low pass frequency, Crossover filter slope. As you make changes the graphic display window will illustrate the changes. Crossover filter type:off/hp/lp/bp OFF= Full Range output no filters selected HP =Passes frequencies above the selected frequency LP = Passes frequencies below the selected frequency BP= Passes frequencies between the selected frequencies Using the pointer click on the desired setting Selecting Crossover Frequency: Frequency can be changed in one of three ways, Direct input in the text field, dragging the slider up/down, or using the mouse scroll wheel for fine tuning. Selecting Crossover Slope: The slope can be set at any of the listed values for the HP and LP filters independently. To select, click on the desired value from 6dB to 48dB. 6

9.Signal Delay: Delay ON The Signal Delay has 3 controls: Delay on/off, Delay value, and Delay type.ms (for setting delay as a measurement of time in milliseconds), or Cm (for setting delay as a measurement of distance in centimeters) Selecting Delay values: Delay can be changed in one of three ways, Direct input in the text field, dragging the slider up/down, or using the mouse scroll wheel for fine tuning. 0 Ms 10.Equalizer Function: PEQ: ON Band: F: 2 1 39 2 60 3 93 4 144 6 224 7 347 8 37 9 833 EQ G 10 11 1290 2001 12 3102 13 4808 EQ Q 14 742 1 110 16 17902 Reset G: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Q: 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 Each Channel 1-8 has its own independent Equalizer. To speed up EQ adjustments you can use the copy function in the Input/output window. The Equalizer consists of these controls: Equalizer on/off switch( PEQ: ON or OFF), Equalizer Gain button (EQ G), Equalizer Q button (EQ Q), Reset, and 16 fully Parametric EQ bands. Each EQ band is adjustable for center frequency 20Hz to 20kHz by direct text input, Level +12dB to -18dB in 0.dB increments, and Filter Q from 0. to 9. Adjustments for filter Q and Gain can be made using direct input in the text field, dragging the slider up/down using the left mouse button, or using the mouse scroll wheel after. Equalizer Q is an adjustment of filter width, the lower the number of the Q the wider the frequency range, Higher the number the narrower the frequency range. 7

11.Display Window: 1 10 0 - -10 Hp Lp B1 B2 B3 B4 B6 B6 B7 B8 B9 B10 B11 B12 B13 B14 B1 B16-1 -20 10 100 1.000 10.000 The left scale is level in db +1dB to -20dB. The bottom scale is frequency from 10Hz to 20Khz. Display Window Details: The display window is used for both display and making adjustments to crossover and EQ filters applied to the selected channel. The display window shows only the details for the currently selected channel. The orange line with EQ dots B1 through B16 shows the EQ filters, The red line shows high pass filter response. The blue line shows the low pass filter response. The yellow response curve show the effects of all filters and is the response curve for the selected channel output. Display Window Adjustments: By using the left mouse button to grab and drag the EQ filter dots, or Crossover Filter dots, you can change the filter frequency and for the EQ filters you can also raise or lower its level. By using the right mouse on the EQ dots you can vary the Q of the EQ band in the display window. 12.Memory Presets: Mem Del Enter 1 13.Back up files on PC: Open Save Read Save As The DSP 4.8 has 10 memory locations so you can save your adjustments for future recall. Save a memory Select the memory number, then press enter, then press Mem. If successful a notification memory save successful will appear. Recall a memory Select the memory number and press enter. Delete a Memory Select the memory number, then press enter, then press Del. If successful a notification successfully deleted will appear. The DSP 4.8 software will store settings to your PC as.dsp8 file for back up or future use. Use the Open button to open saved files from your computer. The Save button will save a new file or for saving revisions to an existing file. The Read button will read the stored memories from the processor. 8

14.Remote Control and display: The remote control is used to remotely select memory presets and volume level without using a PC. When using a digital input source through the Optical or Coaxial digital inputs this will be the main system volume control. NOTE: It is important that you connect the remote control before turning on the DSP4.8 processor, the DSP4.8 will not function without the remote control connected. Connect the remote prior to powering up the DSP4.8 processor. Volume is controlled using the rotary volume knob, turn the knob clockwise to increase the volume, to reduce the volume turn the knob counter clockwise. The volume level will be displayed in the display from 00 to 99. When using the remotes volume control with an analog input source it is suggested that the output level of the analog source be set to its maximum undistorted output level. When using Digital input sources you will be required to use the volume control of the DSP4.8. Memory Presets can be changed using the Memory + / - buttons, the memory preset selected will be displayed. Memory presets are numbered 1 through 10. After selecting a new memory preset wait for it to load completely. 9

Technical Specifications: Items of Test Unit Standard Operating Voltage V 10~1 VDC Current consumption A 0. High level Single-ended input (V) ~8 High level Differential input (V) 2.~4 Maximun input Low level Single-ended input (V) Low level Differential input (V) Auto (V) 2.~3.8 1.2~1.9 High level & Low level Maximum output @.1% THD V VAC High level input impedance K 12K ohm Low level input impedance K 18K ohm Output impedance K 3.9 Frequency response Hz 20~20K Total harmonic distortion % <0.1 Power off time delay Sec >2 Dimension (LxWxH) mm 218 170 46 Accessories Screws, Fuse,Remote controller Note: Features and specifications are subject to improvement or change due to contined product development. 10