Madrigal Imaging AVP2 owner manual Let’s get started

setting & saving input levels

The AVP2 can provide this automatic searching for and selection of the best avail- able soundtrack for you, according to priorities you establish during setup. In es- sence, you are about to describe the order in which you want the AVP2 to look for signals, establishing your first, second and third choice. Typically, this will be RF (AC-3, Dolby Digital), normal digital (which might be a digital version of Dolby Pro Logic, DTS discrete digital, MPEG/Musicam, or ordinary two-channel digital stereo), and finally analog (if there is no digital signal available).

Let’s get started.

1MOVE TO THE “AUDIO CONNECTORS:” ITEM IN THE MENU, PRESS THE ENTER BUTTON, AND USE THE VOLUME ± BUTTONS TO INFORM THE SYSTEM HOW MANY CONNECTIONS ARE NEEDED; PRESS ENTER AGAIN TO SAVE THE CHANGE

Choose 3 audio connectors if you have an AC-3 RF output on your laserdisc player, 2 audio connectors if you have only analog and digital out- puts. Once the AVP2 knows how many connections you need for this par- ticular component, it updates its menu to provide for defining those con- nections.

2DEFINE CONNECTOR “1:” AS YOU DID FOR THE CD TRANSPORT, USING YOUR FIRST CHOICE CONNECTION PREFERENCES FOR LASERDISC; SAVE YOUR CHOICES BY PRESSING ENTER

If you have an RF (AC-3)-equipped laserdisc player and the Audio Video Preamplifier’s optional internal RF demodulator installed, this choice should

be digital (vs. analog) and dig 3 RF. Otherwise, you probably have only two

connections that need to be made, digital and analog; in this case, you’ll 51 want to choose digital and whatever input you used during hookup for

your laserdisc player’s digital output.

3REPEAT THIS PROCESS FOR YOUR SECOND CHOICE (2:) AND THIRD CHOICE (3:) CONNECTIONS AS NEEDED

With three connections, your second choice will be digital, with the third choice being analog. If you chose to set up two connections (lacking an RF output), then your second connection will be your analog hookup. Choose audio: analog in the submenu, and then choose the analog input where you hooked up the analog connections from your laserdisc player). Save your choices by pressing enter.

The AVP2 includes a high quality analog to digital converter (ADC). Since all pro- cessing in the AVP2 is handled in the digital domain, analog signals that are to be changed in any way (other than volume) must first be converted to digital form.

It is extremely important to avoid overloading or “clipping” the ADC, since doing so results in a nasty burst of distortion that sounds similar to a power amplifier clipping. Unlike power amplifiers, this sort of clipping can occur at any volume level, since the ADC is being clipped well before the volume control in the signal path.

Fortunately, the AVP2 can detect when its ADC is being clipped, and posts a no- tice to that effect in its front panel display and on the on screen display. If over- load should occur, the AVP2 will indicate it by displaying ADC CLIPPING on the screen (and “Clip!” in the main display). If you see such a message, you should turn down the input level on the AVP2 (which turns down the volume of the sig-