The new Zapco DSP-Z8 IV
Zapco introduced the world to in-car digital processing in 2004 with the Zapco DSP-6 and the Zapco Digital Processing Network. This was the first full function DSP for the car and included a full line of amplifiers with full function digital processing build in. What a difference 12 years has made. These days, digital processing is everywhere. Almost everything we do is controlled digitally and most often it is invisible, so we simply take it for granted. But in our sound systems we want be able to use digital control to manipulate the audio signal to achieve the optimum live-sound experience in our vehicles. The original DSPs required extensive training of installers to get the optimum results, but the goal with the new Zapco DSP-Z8 IV was to develop a Graphical User Interface (GUI) that would make setting up the sound system a breeze for everyone. You can set up the system inputs, identify the output channels, and set the signal delays to put you dead center in the sound stage. Then you can give each speaker the frequencies it needs for top performance and set its phase relative to the other speakers. All this with a highly organized and automated screen designed for quick start set-up and ease of operation.
Zapco DSP-Z8 IV Dash Remote:
The Zapco DSP-Z8 IV comes with a dash remote that gives you a system volume control and lets you select between the Main input, the Auxiliary input, or the SPDIF digital input. You can set up to 10 complete system presets on the GUI and with the remote you can and switch between them with instantaneous a/b switching so you can accurately compare presets with no lag time. For optimum sound quality the DSP-Z8 IV uses the newest A/D and D/A technology to give you better than 110 dB signal to noise ratio and high end internal analog parts for low distortion and improved musicality. THD is less than 0.005% all the way out to a full 5 Volts RMS.
For tuning, the options are virtually unlimited. You have access to two types of Equalization. You have a 31 band graphic equalizer (GEQ) on each channel to cut or boost frequencies in a 24dB swing, with the bands arranged in standard 1/3 Oct. frequencies. This GEQ though is different, in that you can modify the Q factor (or shape) of each of the 31 filters to match exactly what you need in your vehicle. Secondly, each channel has a PEQ (or Paragraphic EQ) that allows you to put a variable Q filter right where it is needed, without being tied down to the standard choices. With the paragraphic equalizer you can go to ANY frequency that needs adjustment and apply just the exact amount and shape of adjustment that is needed. Need finer tuning? While you are dialing in the sound you can scroll with the arrows or with your mouse in 0.5dB steps of boost/cut, you can move frequency by frequency, and you can change Q of the filter by steps of 0.1 from 0.5 to 9.0.
For optimum sound quality the DSP-Z8 IV uses the newest A/D and D/A technology to give you better than 106 dB signal to noise ratio on the analog inputs, and high end internal analog parts for low distortion and improved musicality. THD is less than 0.005% even on analog inputs, all the way out to a full 5 Volts RMS.
The CS5368 24 bit 192mHz High End Delta-Sigma Analog to Digital convertor gives the Cirrus 47048C DSP chip an input of 114dB S/N (6dB higher than the chip’s built in ADC). What’s that mean? It means the output is Quiet. It means that when to music goes quiet you still hear the music, and not the hiss.
Zapco DSP-Z8 IV Processing power:
For processing, the CS47048 is a 32bit 192kHz machine with 72 bit accumulators. In addition the chip can take up to 5V RMS input. What’s that all mean? First, it means power, processing power. It can do a lot and it can do it fast. It can control gain, phase, and signal delay for 8 channels. Control and manage 16 separate crossover filters with 7 different slopes. And manage the boost/cut of over 350 equalizer bands. And it does it all at the same time. And being able to handle 5V inputs means it can accept the signal from today’s highest output head units without having to pad the input (which only adds noise).
Zapco DSP-Z8 IV Specifications:
Inputs: Main RCA – Aux RCA – SPDIF Digital
Input range: 300mV-4V*
(*Input can be lower or higher but max
sonic performance is in this range)
Optimum Input: 4V in for 5V Out @0dB
THD+N: Analog Input 1V to 5V: ≤ 0.005% Digital Input: @0dB: ≤ 0.002% Analog Input 1V to 5V: ≤ 0.005%
S/N: Analog in A weighted: ≥ 106dB Digital in A weighted: ≥ 110dB
Channel Separation: ≥ 90dB
Noise Floor without signal: ≥ -128dB
Each Output: Crossover HP/LP/None 6dB Steps 6dB~48dB, Signal delay 0~24ms set by distance with ms override. Phase 0⁰/180⁰, Graphic EQ 31 bands Boost/Cut with variable Q, Paragraphic EQ 31 bands Ch1~6 and 11 bands Ch7/8, Muting by Channel or linked groups. Also SOLO single channel play
Dim.: 208mm (L) x 50mm (H) x 128mm (D)
Operating Current: 600ma
Recommended Fuse: 1.5A