Technical data

OWNERS MANUAL FOR WEISS DAC202 D/A CONVERTER
Page 15 Date: 03/10
Audio Sampling rate: BNC connectors rate:
44.1 44.1
48 48
88.2 88.2
96 96
176.4 88.2
192 96
9.) Insert Mode: When enabled, an external digital audio
device (e.g. a digital equalizer) can be inserted into the signal
path between e.g. the source via Firewire and the D/A
converter. The insert mode possibilities are explained further
down.
10.) Main Out Att.: If engaged, the volume knob and the
remote control volume work on both the volume of the main
output and the headphone output. This mode is selected if the
DAC202 is used as a preamplifier. If bypassed, the volume knob
and the remote control volume work only on the headphone
output. The main outputs are set to full volume (0.0 dB). This
mode is used if there is another volume control used in the
chain.
11.) XLR Out Lev.: Main output level in Vrms. There are
four settings to chose from: 8.15Vrms, 4.15Vrms, 2.12Vrms
and 1.06Vrms. Best is to start off with the lowest value (1.06V)
and have the volume knob at 0.0. If the audio volume is at a
comfortable level, i.e. does not need to be louder, leave the
setting at 1.06V. If it needs to be louder select the next setting
(2.12V). I.e. select the setting, which gives you a comfortably
loud level with the volume knob, set to 0.0, i.e. the maximum
level.
12.) Phones Lev.: The same as the Main Out Level, but for
the headphone output. Be careful when selecting that level! The
settings are: 0.2Vrms, 0.9Vrms, 2.7Vrms, 5.2Vrms. Start off
with the lowest level (0.2Vrms). This level is fine for many low
impedance headphones. If the volume is too low even for a 0.0
setting of the volume knob then get to the next higher setting.
The highest setting (5.2Vrms) is used for very insensitive
headphones like e.g. the AKG K1000.
13.) Transparency: This allows to check the player program
on your computer for bit transparency. To do this you need to
play the audio files supplied on the CD coming with the
DAC202. Copy these files onto your drive holding your audio
files. There are two files for each sampling rate, one at a 16 Bit
wordlength (I.e. the system is checked for 16 bit transparency)
and one at a 24 Bit wordlength for 24 bit transparency
checking. The files are in WAV format, which is an
uncompressed format, supported by most players. When
playing a particular file make sure the DAC202 shows the same
sampling rate as the file played has. If the two rates do not
match then there is a sampling rate conversion going on and bit
transparency cannot be achieved. When this is all fine, play the
file and activate the Transparency check by pressing the button
when the “run” word is highlighted. If the player software is bit
transparent then the wordlength of the file played is shown, i.e.
16Bit or 24Bit. If the player software is not bit transparent the
word “fail” is shown. “fail” means that the bits of the original
audio file get changed somewhere on the path between the
hard disk and the DAC202.
If the player does not seem to be bit transparent then this can
have several causes, like:
- a volume control not at 0dB gain
- an equalizer
- a sampling rate conversion
- a “sound enhancer” feature and more
Make sure all those processing elements are bypassed.