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OPERATION
Signal input connection is made via the input jacks on the rear of the SLI 80 located on the rear panel.
The interconnect cables from the output of the CD player, tuner, etc. can be any convenient length your
set-up requires. The choice of a high quality interconnect cable is important. Once again, your audio
dealer will have the proper cables in stock for this purpose.
Your new SLI 80 is ready for operation after the speaker and interconnect cables have been installed.
(Refer to the tube placement sheet in Charts and Drawings for proper installation)
4/8 OHM Switch
Select the proper impedance that is called for in you speaker specification. Make sure that both left and
right channels are the same. An improper setting may not yield peak performance. Listen carefully to
each setting and choose the setting that matches your speakers best.
AC Off/Operate Switch
Simply turn the rotary switch to the "operate" position. Observe that all 10 tubes are lit (filaments).
Headphone/Output Switch
Make this selection based on which output you want to use. If you are using headphones it would be best
to have the headphones installed before switching to headphones. If the music is playing loud and you
switch to headphones without headphones in place it may damage the unit.
Break-In Period
The tubes, capacitors and output transformers take approximately 100 hours of music playing to fully
settle in for peak performance. The SLI 80 will sound good from the start and after the first couple of
hours you will notice increased depth and tighter bass. This break-in period defies all engineering theory,
but is true with high performance vacuum tube audio amplifiers.
Bias Measurement
The bias is factory preset. It is a good idea to measure it during the initial setup to make sure it is set to
the specifications provided at the end of this manual. The AC voltage may be different from one area to
the next. Follow the instructions provided. You will need a meter that allows you to read up to 100mA.
WARNING
MAKE SURE AMPLIFIER IS UNPLUGGED FROM AC MAINS BEFORE
SERVICING.
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