Philips DA1102 - Manual (Page 15)

DA11 Operation
11
2. To allow the signal polarity to be corrected when it is inverted due to polarity inversion in
the recorded music or other equipment/wiring in your system.
- Please note that this function operates in all configurations of the XLR outputs- balanced,
unbalanced Pin 2 Hot, and unbalanced Pin 3 Hot. The “sense” of the function is reverse for
unbalanced Pin 3 Hot operation and balanced “Pin 3 +” wiring (please see the chart below).
The Polarity of the signal affects the motion of the speaker reproducing the audio, and if it is
incorrect can affect the fidelity of the audio in a way that will vary with program material.
If correct throughout the recording and reproduction process, a positive air pressure at the
microphone will result in a positive pressure created by the speaker. If it is “inverted,” the speaker
will move in the opposite direction and the resulting acoustic signal will be less accurate.
Enter the Setting mode and position the cursor above the “invert” legend. Toggle the function On
and Off with the SET switch. Below is a chart of the audio Polarity for different settings:
Invert Function LED Balanced output Unbalanced Pin 2 Hot Unbalanced Pin 3 Hot
OFF OFF Pin 2 +, Pin 3 - Normal Inverted
ON ON Pin 2 -, Pin 3 + Inverted Normal
pin 2, pin 3-
These functions are used to configure the XLR outputs for balanced, unbalanced Pin 2 Hot, or
unbalanced Pin 3 Hot operation, and do not affect the headphone output or signal polarity.
Balanced inputs are characterized by XLR connectors, and are typically wired so Pin 2 is “+”
(non-inverting) and Pin 3 is “-“(inverting). Unbalanced inputs are typically “RCA” (also called
coaxial “Cinch” connectors) or 1/4” phone jacks (similar to a large headphone plug with two
conductors). Most consumer HiFi equipment has unbalanced RCA inputs. Although no damage
will occur if these settings are not correct, connecting the DA11 to an unbalanced input with the
incorrect settings will result in higher than normal distortion or no sound. Please see the section
titled CONFIGURING THE XLR OUTPUTS for details on these settings.
dim-
This function adjusts the brightness of the front panel displays. When the function is On, the
displays are approximately one half as bright as when the function is Off.
C. OPERATING MODE
When AC power is first turned “on,” the DA11 initializes for a few seconds. Once the indicator
LED’s appears in the IMAGE display, the unit has entered Operating mode and all of the settings
(including the Volume setting) are restored to the state they were in the last time the “LE” symbol
appeared before the power was turned “off.” Turning the power “Off” before the LE reappears will
result in the last setting changes not being stored in memory.
- To exit the Setting mode, click the right SELECT switch up towards “exit.” The displays will
revert to the Operating mode with the IMAGE display indicating the setting of the Stereo Width
Control and the VOLUME display indicating the volume setting for approximately 10 seconds.
The symbol “LE” will appear after that to indicate the programmable settings have been stored in
non-volatile memory. This means the settings will be retained if the power is turned “Off” and
restored when the power is turned back “On.”
>PiC< Playback Image Control™-
This proprietary system controls the apparent “width” of the stereo image, and allows the position
in the stereo sound field of each channel to be controlled individually. Examples of when this
feature could be used are to increase the width of the stereo image when listening with
headphones or to compensate for asymmetric placement of speakers in relation to the listening
XLR to RCA adapters included with DA11