Laney, Nx t – Laney NEXUS-TUBE User Manual
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Laney
OPERATING INSTRUCTIONS
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X
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TUBE STATUS INDICATORS / FUSES
Each of the eight output tubes have two led indicators along side them; one Blue and one Red.These are there to indicate the
status of the individual output tubes.
When turning the amplifier on in standby mode the red leds will all show immediately.
After two minutes turn the standby to run (with speakers connected but no signal) the red lights will gradually go out and there
should be no lights showing.
When a signal is applied the blue and red lights will flash in sympathy with the sound.Each tube also has it's own fuse this is
provided to help prevent amplifier shut down in the unlikely event of a tube failing during a performance.
Fault conditions: If a red light remains on after the amplifier goes into run mode without a signal present then the associated
tube may have failed or its adjacent fuse may have blown. Check the fuse and replace with one of the same type & rating. If it
blows again then the tube is suspect and should be replaced with the same type and grade number. If the blue and red light fail
to come on, with a signal present, by a particular tube or tubes then those tubes may have failed and should be replaced with
the same type and grade number. (Don't forget to also check their fuses).
Re-biasing and trimming should only be carried out by qualified service agents who have access to the Laney service manual
data for this product.
V1
V1
V2
V2
V3
V3
V4
V4
V5
V5
V6
V6
V7
V7
V8
V8
V10
V10
V9
V9
V11
V11
V12
V12
TUBE DEFINITIONS
V1
Preamp Tube Channel
ECC83 Hi Grade
Pt No. 005570
V2
Output Buffer
ECC83 Hi Grade
Pt No. 005570
V3-V10
Output Tubes
KT88
Pt No. 007318
V11
Phase Splitter Tube
12AX7
Pt No. 007320
V12
Driver Tube
12BH7
Pt No. 007319
Available from Laney through your dealer.