Multiplexer
15 Applications
A8
KLIPPEL Analyzer System
Page 15 of 16
SELECTED SPEAKER
EXCITATION
(Dual Parallel 1 out of 4)
+
Microphone Multiplexing
(1x8)
MIC 1
USB
SUB
L rear
L front
Center
R front
R rear
Ambient Noise Mic
Typical application: Final QC-Test of active 5.1 Systems
Test signal is given via USB to the active subwoofer, all passive satellites are driven
by the amplifier inside the Subwoofer. The speaker multiplexer allows to select if:
•
One of the satellite channels is fed via the voltage and current sensors in
the analyzer
•
The satellite channels which are not tested are bypassed for an overall
SPL measurement
•
Or the not measured satellite channels are switched off for an individual
SPL measurement at each channel
The 5
th
speaker cannel is routed directly through the 2
nd
speaker channel of the
Production Analyzer. If more channels have to be measured (e.g. 8.1 systems), a
2
nd
speaker multiplexer is needed.
The ambient noise microphone always monitors the far field sound pressure.
Needed option: Speaker Multiplexer needs “Bypass” or Bypass switchable” option.
SHORTING PASSIVE
CHANNELS
Tweeter
Woofer
Woofer
FIREWIRE
POWER
USB DIGITAL I/0
AMP
SPEAKER 1
SPEAKER 2
Tweeter
Typical application: QC testing of coaxial drivers.
•
Tweeter channel can be shorted while woofer channel will be tested.
