SONIFEX - RB-ADDA - AD/DA Convertor
LINDOS AUDIO SEQUENCE TEST SONIFEX - RB-ADDA - AD/DA Convertor
SOURCE MS10 V3.0 In-Out 96k 24-bit AL -18FS
12-Jun-05 12:39 PM TOLERANCE Lindos GradeA++ PASSED


FREQUENCY RESPONSE @0dB [u]
20Hz -0.75 -0.75 ±1
31Hz -0.12 -0.25 ±1
40Hz 0.00 0.00 ±.75
50Hz -0.12 -0.12 ±.5
100Hz 0.00 0.00 ±.25
315Hz 0.00 0.00 ±.25
1k0 0.00 0.00 ±.25
6k3 0.00 0.00 ±.25
10k0 -0.12 -0.12 ±.25
12k5 -0.12 -0.12 ±.25
14k0 -0.12 -0.12 ±.25
16k0 -0.12 -0.12 ±.25
20k0 -0.12 -0.12 ±.5
25k0 -0.25 -0.25
TEST LEVEL OUT 1kHz [t]
TL dB 00.05 00.00 ±.3<.2
DELms 0000 <100
NOISE ITU-468 Q-Pk REL [n]
WTD -77.17 -77.06 -70
DIST RES 1kHz WTD REL [r]/q
-20dB -57.71 -57.76 -50
0dB -75.15 -75.37 -55
+8dB -76.79 -77.34 -55
+12dB -75.64 -76.32 -55
+15dB -72.74 -74.78 -55
+18dB -71.44 -72.49 -55
PHASE R-L [z]
3k15 02.00 ±10
10k0 00.00 ±20
15k0 02.00 ±30


Excellent - Passes GradeA++. Lower noise is possible from 24-bit, but figures below -75 are not likely to make any difference.

A problem was experienced with the output being badly unbalanced, causing one side to overload the measuring input. After consulting Sonifex, two capacitors were removed, producing a centre-grounded non-floating output with very good balance (Lindos preference)

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