15.1. System check - References
Typical impedance (Z) values
The following table indicates typical impedance values in ohms for
d&b loudspeakers. With correct measurement conditions and
relatively short cables measured impedances should be in a range
of ±20 % of the values indicated in the table.
The values refer to a single cabinet. When two cabinets are
connected in parallel, the total impedance is halved, with three
cabinets it will be a third and so on.
Note: Please note that the LF values were determined by the
amplifiers' measurement algorithms using sine wave signals. A
DC resistance measurement using a multimeter may produce
different results.
D80 amplifiers apply audible low level signals in the Low
frequency region range using dedicated frequencies for each
cabinet type for a few seconds, reducing the impact of
ambient temperature and mechanical aging of the driver
components on the impedance values.
System
Z LF
D80
Z HF Z MF/LF rear
D80
16C 7.5 12 -
24C 12 11 -
24C/CE 7 11 -
10AL/10AL-D 17 13 -
10S/S-D/A/A-D 17 13 -
12S/S-D 7 11 -
12S-SUB 8 - -
18S/A-SUB 6.5 - -
27S/A-SUB 5 - -
4S 17 11 -
5S 16 11 -
8S 10 15 -
B1-SUB 4.5 - -
B2-SUB 3.5 - -
B4-SUB 5 - -
B6-SUB 6.5 - -
C3 8.5 4 -
C4-TOP 11 12 -
C4-SUB 6.5 - -
C6/690 7.5 15 -
C7-TOP 7 8 -
C7-SUB 6 - -
Ci-SUB -tbc- - -
Ci45/60/90 7.5 13 -
Ci80 11 16 -
15. Appendix
d&b D80 Manual 1.8 en 73
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