Rockford Fosgate Programmable 8 Channel Digital Signal Processor (3SIXTY.3)

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Rockford FosgateSKU: 3SIXTY.3

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Rockford Fosgate built their 3Sixty.3 processor so you can enjoy amazing sound quality from your vehicle's sound system — the quality you'd expect from a high-fidelity home stereo system or a pair of really good headphones. This sophisticated signal processor works with your laptop to give you awesome control. Once you load the software from the included setup CD, you can connect the 3Sixty.3 to your laptop with the included USB cable, and get to work creating a perfect-sounding system with the user interface controls displayed on your computer's screen.

Setting up

The 3Sixty.3 can handle up to 8 inputs, whether they're line-level signals from an aftermarket receiver or speaker-level signals from a factory radio. You can set the input signals to combine together or stay distinct, and then assign them to up to 8 output channels. The setup CD includes a track to help set input levels and another track that's used in the "Auto Normalize" feature that flattens the entire system's EQ response curve automatically. The remote amp turn-on connection features an adjustable delay, so you'll never hear a pop when you turn your system on.

Add sources

The 3Sixty.3 lets you add sources through both auxiliary RCA and TOSLINK optical connections. A wired remote control lets you switch between main source, auxiliary input, optical, or a Bluetooth® enabled device. The Bluetooth feature can be set to "Auto Play," which automatically switches the source over to your Bluetooth device when it sends out a notification or plays music.

Central control

The main user interface screen displays your speaker configuration, a wired remote simulator, an EQ graph, and the EQ controls. Each of the 3Sixty.3's 8 channels has its own crossover network, level adjustment, delay setting, polarity switch, and 31 bands of equalization. You can link channels together, if you want them to have identical EQ settings.


Crossover networks

Each crossover network can be set as a high-pass, low-pass, all-pass, bandpass, high-shelf, or low-shelf filter, so you can take care of virtually any combination of speaker components. You can choose between 4 classes of crossover filters to achieve the exact audio response you want. (See bullets for details.) If that weren't enough, you can also select between 4 different slopes for each crossover response curve to attain unbelievable clarity from each of your speakers.

EQ and time alignment

The 31-band parametric equalizer on each channel gives you the sonic power and control to really make your sound system sing. (That's 248 total bands of EQ, if you want to tweak them all.) Time alignment can be accomplished by measuring distances or by time settings, so your music gets centered on your listening position for an incredible improvement in musical clarity and realism.

Product Highlights:

  • -digital signal processor
  • -DSP settings and adjustments made via laptop or PC (using Windows) through USB port
  • -setup CD includes the user interface software (CD player required)
  • -8 assignable inputs
  • -inputs: 8 RCA preamp, 8 speaker-level, L/R auxiliary RCA, 1 optical TOSLINK (S/PDIF), and Bluetooth device
  • -wireless Bluetooth dongle included
  • -wired remote includes 2 assignable controls for master volume, sub level, or bass boost, and switches to select between 4 sources and 3 EQ presets
  • -8 preamp outputs (up to 8 volts)
  • -remote amp turn-on with selectable delay times (1, 2, 4, or 8 seconds)
  • -time alignment set by centimeters, inches, or milliseconds
  • -31-band parametric EQ on all channels
  • -channel EQ settings can be separate or linked together
  • -crossover filters can be set as all-pass, high-pass, low-pass, bandpass, high-shelf, or low-shelf filters (20-20,000 Hz)
  • -selectable slopes (12, 24, 36, or 48 dB/octave)
  • -selectable filter classes
    • Butterworth: sharp transition, suitable for most applications
    • Bessel: gradual transition, suitable for smooth speakers, but not subs
    • Linkwitz: recommended for high-end speakers only, not subs
    • Chebyshev: very sharp transition, useful as high-pass for tweeters or low-pass for subs
  • -phase switch on every channel
  • -includes 16.5-foot USB cable
  • -dimensions: 9-5/16"W x 1-11/16"H x 6-15/16"D
  • -warranty: 1 year


Interactive Signal Processor: As the automotive manufacturers increasingly make their source units (radios) an integral part of the vehicle, it becomes increasingly harder to change them out and upgrade your system. The Rockford Fosgate 3Sixty.3 Interactive Signal Processor makes it possible to utilize your vehicle's factory source unit and still create the sound experience that fits you. With an easy to use interface, the 3Sixty.3 connected to your vehicle's source unit and an amplifier, you can create a sound stage that is personally tuned to your vehicle. The 3Sixty.3 gives you all the benefits of creating the best system possible without compromising the manufacturer's integrated source system. The Rockford Fosgate 3Sixty.3 Interactive Signal Processor is the perfect solution if you need to add aftermarket equipment to your factory source unit, integrate your mobile devices, or have complete control over your car audio signal. The 3Sixty.3 can function as an OEM integration "black box" or a complete surround sound DSP.

DSM: DSM (an industry-leading manufacturing process) utilizes high-speed robotics, high-quality 1% tight-tolerance parts, and large board traces. The discrete components are laser etched to meet a particular value and a very low tolerance. This lower tolerance improves the efficiency of the circuit, decreases cross-talk from other discrete components, and lowers operating temperature.

Frequency Normalization: Frequency normalization is achieved by characterizing the frequency response of the audio source based on a reference input signal. This reference input signal is used to establish a reference frequency response, which is stored in memory and used to select equalizer settings. The system restores missing spectral content by summing multiple input signals from the audio source. The system then normalizes the frequency response based on characterizations of the signal by utilizing equalizer settings from memory.

Bluetooth A2DP Audio Streaming: The 3Sixty.3 includes a Bluetooth wireless dongle which allows you to wirelessly stream audio from your Bluetooth-enabled device.

RFLink: RFLink is a communication protocol allowing multiple Rockford Fosgate components to link-up with each other to provide intelligent control. The 3Sixty.3 features two RFLink jacks. Either one can be used to connect the included wired remote control.

Power LED: The RF logo illuminates white once initialized, illuminates blue when connected to a PC, flashes blue when transmitting data to/from a PC, and flashes red when a problem has occurred.

Mounting Options: The Rockford Fosgate 3Sixty.3 should be mounted inside the vehicle, such as under the passenger seat. It can also be mounted in the trunk area. It should never be mounted inside the engine compartment.


Interactive Graphic User Interface (GUI) Controlled via Windows PC: Once you have installed the Rockford Fosgate 3Sixty.3, a windows PC laptop will be need for initial setup and adjustments for the interactive signal processor to properly work with your system. The 3Sixty.3 includes a setup disc with windows PC software to configure the interactive sound processor to your vehicle and car audio system.

Configuration Menu: The Configuration menu is used to set up the assign input/output configuration, input summing, assign source presets, input level set, and denormalization of a high level input, of the 3Sixty.3 processor

  • Assign Input/Output: The 3Sixty.3 can handle up to 8-channels of input and 8-channels of output. In the Assign Input Configuration page there are three possible input sources available; Low Level (RCA), High Level (Speaker), Optical (Toslink).
  • Input Summing: The 3Sixty.3 can take two or more non full-range, high-level signals and combine them to make one full-range low level signal. When an input is set "High Level (Speaker)" you are given the opportunity to select an output channel from the diagram and select which inputs you would like to sum for that output channel. You must assign at least one input channel for each output channel.
  • Assign Source Presets: The 3Sixty.3 can save up to four separate EQ settings (Presets). The four presets can be setup so that each source can have a dedicated EQ setting or so that each source can run multiple EQ settings. Any source that does not have a preset assigned to it will be disabled. the remote will skip any unused sources and presets during selection mode.
  • Input Level Setup: The 3Sixty.3 utilizes a very unique circuit to detect the maximum output voltage that can be achieved from each channel of your source unit at a very low THD level. The 3Sixty.3 comes with a special modulated signal on track 1 of the Setup Disk that is used to measure the source unit's output. Insert the Setup Disk into your source unit, and select track #1. Each input channel selected in the Assign Input Configuration window will display a level meter, indicating the voltage for that channel as well as the amount of THD measured. The THD level is indicated by the color of the level meter. A green level meter indicates an acceptable amount of THD, while a red level meter indicates an unacceptable level. Turn the volume on the source unit to maximum, then reduce the volume until the level meter for every channel is green. Then, make note of the final source volume on the source unit level, which is the maximum level the source unit should be turned up to once the installation is complete. On the "Input Attenuators" page, the input level of each channel is displayed using a level meter and underneath each level meter is an attenuation level slider. In order to ensure an equal output voltage on all channels, the "Auto Range" feature attenuates each input channel to 2V before entering the DSP. This is the maximum input voltage needed to achieve the maximum 8Vrms on the 3Sixty.3's output.
  • Input Denormalization: The 3Sixty.3's input denormalization function is designed to measure the electrical frequency response of each channel from your source unit and calculate the correction curve needed to flatten the output of each channel. It then combines the correction curve with the source units output, giving you a flat frequency response on the output channels. Select track #2 (Correlated Pink noise) on the 3Sixty.3 setup disk. The volume of the source unit can be left at its maximum level unless the source unit has a volume dependant equalization circuit such as most BOSE systems, in which case the source unit should be set to half of the maximum level calculated when level setting the input. Select the "Auto Normalize" button, this can take approximately 1-5 minutes to calculated the correction curve needed to normalize the output. You can now use the drop down menu to switch between the measured input frequency response and the corrected output frequency response displayed on the graph. The color correlating to each channel on the graph will be displayed on the right hand side.

Speaker Selection: The upper left of the GUI displays a picture of a vehicle with the speakers (channels) displayed that were initialized in the Assign Input/Output section of the initial configuration. Each speaker (channel) can be configured individually or you can link together channels. For convenience the sub woofer channels just have one check box to link the level, crossover, and EQ. By selecting to link the left and right channel level, crossover, or EQ together what you do with one side will be duplicated to the other side. The speaker (channel) that is selected will be highlighted blue and the channels name will be displayed above the vehicle diagram.

Equalizer: The EQ graph will start with a perfectly flat response (20-20 kHz) when first setting up your equalizer, then any changes/additions to the 31-band EQ, filters, or Q, will be displayed in the EQ graph. Every channel has its own independent (unless linked) EQ adjustments. The EQ adjustments can be broken down into three separate sections; Crossover Network(s), Level & Delay, and the 31-Band EQ Adjustments.

Balanced/Unbalanced Switch: For matching the output of the 3Sixty.3 to the input of the amplifier, the interactive signal processor utilizes a compensation circuit to insure an 8V pre out regardless of the switch position.

Remote Output Delay: Remote Output Delay Timing options include 1 sec, 2 sec, 4 sec, or 8 sec. This allows you to customize the time delay from when the 3Sixty.3 initializes (turns on) to when it turns on any external amplifiers connected to its REM OUT (blue wire in 4 pin power harness). This extended timing ensures that the source unit and 3Sixty.3 are on and initialized before initializing (turning on) the amplifiers, therefore eliminating any turn-on "pop" noise.

Wired Remote Control: The included wired remote features two 3-way rotary knobs. The two knobs can be programmed to control two of the following three functions when rotating the knobs; Master Volume, Sub Output Level, and Punch EQ Output Level. Pressing the knob on the left selects between four inputs (Main, Bluetooth, AUX, & Optical). Pressing the right knob switches between 4 stored EQ presets. The wired remote control's 8 LEDs indicate multiple functions. If either of the knobs are rotated all 8 LEDs work sequentially to indicate the level of what the user has configured that knob to do.


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