Dac 64
Choral Series - quick guide to connections and settings
BLU – Upsampling CD transport
Clock Switch UP 44.1kHz Dither Switch UP 24-bit (NORMAL)
MID 88.2kHz DOWN 16-bit (HIGH)
DOWN 176.4kHz Dual Data
To use Blu with DAC64 (2x BNC input version), run one BNC-BNC cable from Dual Data Output 1 to Dual Data Input 1; and a
second BNC-BNC from Dual Data Output 2 to Dual Data Input 2.
Do not use the Dual Data outputs with 88.2kHz or 44.1kHz selected, this will cause distortion from the DAC.
Only change sampling frequency with volume muted or with the system switched off.
The optical output sends at 88.2kHz when 176.4kHz is selected.
DAC64 – 64-bit D-A converter
Input Selector UP Optical RAM buffer UP No buffer
MID AES/EBU MID Low buffer (1 sec delay @ 44.1kHz)
DOWN Dual or single BNC DOWN High buffer (4 sec delay @ 44.1kHz)
The first generation of DAC64 has single BNC input. To use it with the Blu CD transport, run a single connection at 88.2kHz.
When using the Dual input DAC64 with a single connection ie. from a different CD transport, use the lower BNC input.
Always use shielded 75 ohm coaxial digital cables; please avoid phono-BNC adaptors.
SYMPHONIC - Phono stage
The gain and impedance levels should be added together eg. for a desired impedance of 300 ohms, select both 270 and 33 ohms.
FOR FULL DETAILS PLEASE REFER TO THE PRODUCT MANUALS
1
S/DIF2
OUTPUT
Clock
Switch
Dual Data
Output 1
Word Clock
Input
Optical
output
AES/EBU
Output 1
AES/EBU
Output 2
Dual Data
Output 2
Mains input
and switch
Dither
Switch
Right output
RCA–phono
Input
selector
RAM buffer
switch
Dual Data
Input 1
Dual Data 2
or BNC coaxial
Left
XLR Right
output
Left output
RCA–phono
AES/EBU
Input
Optical
Input
XLR Left
output
Mains input
and switch
Left output
RCA-phono
Right output
RCA-phono
Right input
RCA-phono
Left input
RCA-phono
Gain (dBv)
85 74 68 58
Rumble Filter
(IN = active)
Earth screw
Impedance
33R 100R 270R 4K7R 47kR 150
p
F
Balanced (IN)
RCA
(
OUT
)
XLR Right
input
XLR Right
output
Mains input
and switch
XLR Left
input
XLR Left
output
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