The Technical Stuff
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The procedure for adjusting the meter is as follows:
1) Power on the LA-610 and allow it to warm up for five minutes. Remove lid.
2) Set the Meter switch to the GR (Gain Reduction) position.
3) Set the Peak Reduction control off (turn the knob fully counterclockwise), waiting at least 1 minute
for the T4 compressor to fully release.
4) Use a small screwdriver to slowly adjust the “GR ZERO” pot so that the meter reads 0 dB. Watch
how the meter settles before completing the calibration.
Internal Power Fuse
The LA-610 can operate from 100V to 240 VAC / 50-60 Hz. The internal power supply is self-sensing
and will automatically work throughout this voltage range. The AC power fuse is located on the
internal power supply circuit board inside the LA-610 MK II. However, in the event the fuse fails, it is
symptomatic of a serious problem with the unit and should be serviced by Universal Audio.
Changing Tubes
The LA-610’s tubes are accessible by removing the top lid. Always replace tubes with the same
value. Replacement tubes are available through major music retailers, or directly from Universal
Audio.
Warning!! High voltage danger!! Always remove the power cord before checking fuses!
Warning!! High voltage danger!! Always remove the power cord before checking or changing
tubes!
