zapco DC-352, Owner'S Manual

1)   Channel Select   

The top section of the PC screen allows you to determine which 

available channels you will be programming. The number of options will be determined 
by the Zapco Digital item you are programming. The Zapco Digital Control will identify 
which unit you are programming and how many channels are available. You can adjust 
the channels individually, or in stereo pairs as required. Simply move the mouse to your 
choice and click it on.

2)   Function/Graph   

In this section you can turn the processing functions on or off to 

compare the sound of your modified response to the unprocessed sound by clicking the 
buttons on of off with your mouse. You can also monitor the graph to see, in real time, 
how your adjustments will affect the input signal.

3)   Equalizer   

In this section you can make the adjustments to the parametric equalizer.

The top row sets the level of boost or cut at the center frequency, up to±15dB The next 
row sets the Q (shape) of the equalization. A low Q affects a wide range of frequencies 
while a high Q affects a narrow range of frequencies. The Graph screen will let you see 
how the different Qs affect your response. The bottom row of the EQ screen sets the 
center frequencies. The EQ section is a true parametric EQ. We have set factory defaults 
at about ½ octave intervals. However you can alter the center frequencies to fit the 
requirements of your car.

4)   Mute   

The Mute buttons allow you to temporarily turn off some of the active channels. 

This is very handy in tuning when you want to hear the response of an individual channel.

5)   Crossover   

For each channel, when you have turned on the crossover function, you 

can choose to run a High pass, a Low pass, or a Band pass crossover. You can also choose 
a crossover slope of 6dB,12dB, 24dB, or 36dB per octave. from the drop-down menu, 
and you can choose to use a Butterworth or a Linkwitz-Riley filter.

6)   Voltage Sensitive EQ   

Allows you to set one parametric EQ filter for each channel 

or channel pair that will come on only then the system reaches a pre determined volume. 
This is most often used in factory integration when the factory system rolls off the bass 
frequencies to protect the factory woofer.
See more under 

Getting Started 

later in this manual

7)   Input   

This lower section of the screen contains the Input Commutator, Source 

Selector and Phase control
          

Channel 

At the top of the screen you picked the channel you would adjust. Here 

you can pick which channel you will use as input for the chosen channel. In this way you
can assign the same channel pair as input to all channels of multi-channel amps. 

NOTE: Ch5+6 

(as above) means you will 

"

sum

"

 the two channels to a single mono input. 

Ch5/6 

means you will use channels 5 and 6 as a stereo input pair.

Also: 

The

Input Channel selector gives you the option of summing 2 or 3 stereo pair into 

one single stereo pair for OEM integration. This lets you combine highs, mids, and lows 
from a factory system into a single stereo output and eliminate the factory crossover.
          

Sensitivity: 

After picking the inputs for your channels, you can set the channel

'

s 

sensitivity for maximum signal with minimum noise. Input voltage should be set to match 
the head unit's output.
          

Selector: 

Allows you to choose from the Main input, the Analog Aux-in, or the 

Digital SPDIF input

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