APPENDIX7-1

1012 AUDIO BLOCK DIAGRAM

4
DIGITAL
AUDIO
RECEIVER
MODULE
BOULDER
CUSTOM DSP
DIGITAL
LOW PASS
D/A
CONVERTER
6 POLE
BESSEL
ANALOG
LOW PASS
100K OHM
BALANCED
INPUT
BUFFER
200 STEP
ATTENUATOR
BALANCED
OUTPUT
BUFFER
BALANCED
OUTPUT
BUFFER
30 DB GAIN
LOW NOISE
RIAA CURVE
PHONO STAGE
10/30 DB
SWITCHABLE
GAIN
BUFFER
MAIN
OUTPUT
RECORD
OUTPUT
1
2
3
1
2
3

PHONO

DIGITAL
INPUTS
ANALOG
INPUTS