WEISS DAC205 Professional D-A Converter Instruction Manual

WEISS DAC205 Professional D-A Converter

Product Information

The Weiss DAC205 D/A Converter is a stereo 24-bit / 192kHz D/A converter that supports AES/EBU or S/PDIF signals. It comes with an input selection switch, analog outputs on XLR and RCA connectors, digital inputs, an external power supply connector, and two toggle switches for output level setting. The DAC205 also has a power on/off switch with LED. The package includes the DAC205 D/A Converter unit, a power supply, and an owner’s manual.

Product Usage Instructions

1. Unpack and set up the DAC205 carefully. Check that the package includes the DAC205 D/A Converter unit, a power supply, and an owner’s manual.
2. Connect the enclosed power supply or any other appropriate supply to the input socket. Refer to the Technical Data section for more information on the power supply.
3. Choose between the RCA input or the optical Toslink input by selecting the input with the appropriate switch. The data format can be either AES/EBU or S/PDIF.
4. Connect your preamplifier or power amplifier to the output connectors of the DAC205. Use either the symmetrical (balanced)blines (XLR) or the asymmetrical (unbalanced) lines (RCA). It is also possible to use both outputs simultaneously.
5. If the XLR outputs are used to connect to an unbalanced input,vensure that XLR pin 1 is used for the ground connection and XLR pin 2 is used as the hot signal. XLR pin 3 must be left open.
6. If there isn’t any signal at the DAC205 outputs, check the power switch / LED and also make sure the sampling frequency is in the range supported. See the Technical Data section for details.
7. The output level can be set with the two switches in 10dB steps. Four different output levels can be selected.

INTRODUCTION

Congratulations on purchasing the Weiss DAC205 D/A Converter!

The DAC205 is a stereo 24 bit / 192kHz D/A convert-er which supports the following conversions:

• AES/EBU or S/PDIF on RCA to analog
• AES/EBU or S/PDIF on Toslink to analog

There also is the DAC204 model available which has an INT204-type USB interface added to the DAC205 features.

Features

• Input: There are two AES/EBU (S/PDIF) in-puts on RCA and Toslink (optical) connectors. The sampling frequencies supported are 44.1, 48, 88.2, 96, 176.4 or 192 kHz.

• Outputs: The outputs are balanced on XLR connectors and unbalanced on RCA connectors. The XLR outputs have a 6dB higher level than the RCA outputs. The XL outputs (XLR pin 2 or pin 3) must not be shorted to ground, i.e. there is no servo circuitry implemented.

• Output Level: Two switches allow to set 4 different output levels at 10dB steps.
  Sampling Rates, Word-length: 44.1, 48, 88.2, 96. 176.4, 192 kHz at up to 24 Bits are supported.

• Jitter suppression: Several signal reclocking schemes are combined for high jitter attenuation.

• Converters: Oversampling sigma delta D/A converters are used. Four D/A Converters per audio channel are operated in parallel for enhanced signal to noise performance.

• Power Supply: An external power supply is used. The required voltage is between 6V and 9V

• Front-panel elements:

  • Power on/off switch with LED.
  • An input selection switch.

• Back-panel elements:

  • Analog outputs on XL and RCA connectors.
  • Digital inputs (one RCA and one Toslink connector).
  • External power supply connector.
  • Two toggle switches for output level setting.

OPERATION

Unpacking and Setup of the DAC205 Carefully unpack the DAC205. The following items should be enclosed:

• The DAC205 D/A Converter unit
• A power supply
• This Owners Manual

Power Supply Connection
Connect the enclosed power supply or any other appropriate supply to the input socket. See the Technical Data section for more information on the power
supply.

Input Connection
The DAC205 operates either with the RCA input or the optical Toslink input. Select the input with the appropriate switch. The data format can be either AES/EBU
or S/PDIF.

Output Connection

• Connect your preamplifier or power amplifier to the output connectors of the DAC205.
• Use either the symmetrical (balanced) lines (XLR) or the asymmetrical (unbalanced) lines (RCA). It is also possible to use both outputs simultaneously.
• If the XLR outputs are used to connect to an unbalanced input then make sure that XLR pin 1 is used for the ground connection and XL pin 2 is used as the hot signal. XLR pin 3 must be left open.
• If there isn’t any signal at the DAC205 outputs check the power switch / LED and also make sure the sampling frequency is in the range supported. See the Technical Data section for details.

Output Level
The output level can be set with the two switches in 10dB steps. Four different output levels can be selected.

TECHNICAL DATA

Digital Inputs:
(1) RCA connector, (1) Toslink connector (optical)

• All inputs accept professional or consumer standards, i.e. accept AES/EBU or S/PDIF signals.
• Sampling frequencies: 44.1, 48.0, 88.2, 96.0, 176.4, or 192 kHz on the RCA input.
• Sampling frequencies: 44.1, 48.0, 88.2, 96.0 kHz on the Toslink input.
• Maximum input word length: 24 Bits.

Analog Outputs:

(2) XLR connectors (hot output on pin 2, not servo controlled), DC coupled, short circuit proof output circuitry, Output impedance: 44 Ohm
(2) RCA connectors, DC coupled, short circuit proof output circuitry, Output impedance: 22 Ohm

Output level: Selectable by two toggle switches, 4 settings:

XLR outputs:

• 7.5 Vrms, +19.7 Bu, with a O BFS sinewave input
• 2.3 Vrms, +9.7 Bu, with a 0 BFS sinewave input
• 0.75 Vrms, -0.3 Bu, with a O BFS sinewave input
• 0.23 Vrms, -10.3 Bu, with a O BFS sinewave input

RCA outputs;

• 3.75 Vrms, +13.7dBu, with an O dBFS sinewave input
• 1.15 Vrms, +3.7dBu, with a 0 BFS sinewave input
• 0.375 Vrms, -6.3dBu, with an O BFS sinewave input
• 0.115 Vrms, -16.3dBu, with an O BFS sinewave input

Synchronization:

• Synchronized via the input signal.
• Extremely efficient Jitter attenuation.
• Sampling frequencies supported: 44.1 kHz, 48.0 kHz, 88.2kHz, 96.0kHz, 176.4khz, 192kHz

Power:

• DC input voltage: 6 to 9 Volt
• DC input current: 900mA at 6V, 600mA at 9V
• Power consumption: 5.4 W

Measurements:

The measurements below have been taken at the following conditions (unless noted otherwise): 1 kHz measurement frequency, maximum selectable output level, 192kHz sampling frequency (Fs), 22kHz measurement bandwidth, un- weighted, O Br equals the output level at O BFS input.

Frequency Response

• Fs = 44.1 kHz, OHz-20kHz: within +- 0.25dB
• Fs = 88.2 kHz, OHz-20kHz: within +- 0.25dB
• Fs = 88.2 kHz, OHz-40kHz: within +- 0.8dB
• Fs = 176.4 kHz, OHz-20kHz: within +- 0.25dB
• Fs = 176.4 kHz, OHz-40kHz: within +- 0.8dB
• Fs = 176.4 kHz, OHz-80kHz: within +- 2.5dB

Total Harmonic Distortion plus Noise (THD+N)

• 116 Br (0.00016 %) at -3 BFS input level
• 125 Br (0.000056 %) at -40 BFS input level
• 125 Br (0.000056 %) at -70 dBFS input level

Linearity
At 0 BFS to -120 BFS input level: less than ffIO.4 dB deviation from ideal

Spurious components (including harmonics)

• At O BFS input level, maximum output level, 1 kHz, all components at less than -120 Br
• At O dBFS input level, maximum output level, 4 kHz, all components at less than -115 Br

Crosstalk
Better than 120 dB, 20 Hz-20 kHz

Interchannel Phase Response

• +- 0.05° 20 Hz-20 kHz
• +- 0.30° 20 Hz-80 kHz

Weiss Engineering Ltd., Florastr. 42, CH-8610 Uster, www.weiss.ch  weiss@weiss.ch

References

• Welcome – Weiss Engineering

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