3
HV-3C
QUICK START!
READ THIS!! The HV-3C operates with lethal operat-
ing voltages — the voltage inside the HV-3C can kill you.
Never, under any circumstances, remove the top cover. Re-
fer to a qualified electronics technician any and all servic-
ing and other operations which require the top cover to be
removed.
Congratulations on your purchase of the Millennia Media HV-3C High Voltage Microphone
Preamplifier. The HV-3C is the result of meticulous listening tests on numerous circuit, topol-
ogy, and packaging designs. Your HV-3C is a finely tuned instrument intended for critical pro-
fessional applications — we feel it offers the world's most sonically neutral microphone pream-
plification. With the emergence of 24+ bit digital audio, recording engineers are faced with a
new requirement for undistorted dynamic range. The HV-3C meets this challenge exceptionally
well.
Before connecting power to the HV-3C, assure that the rear panel voltage selection fuse block
switch is set correctly. In the USA, the HV-3C is shipped with the voltage selection block set
to 100-120 VAC. If you change the voltage selection block to 200-240 VAC usage, be sure to
change both fuses to the correct types. See "Rear Panel" instructions for proper fuse require-
ments.
The HV-3C enclosure measures 19" wide x 1.75" high x 13" deep and is designed for mount-
ing into a standard 1U, 19" equipment rack. If the HV-3C is mounted in a road case or other
rack which is prone to strong vibration or shock, it is recommended that the rear of the HV-3C
be supported or otherwise reinforced to withstand such conditions. The HV-3C runs cool but
should be mounted with at least one rack space open above and below the unit.
The HV-3C is designed on a common ground topology. For high quality operation, and for
your own safety and the safety of others, do not defeat the purpose of the earth grounding pin
on the A/C power cord.
HV-3C FRONT-END PROTECTION
Back-to-back Zener diodes protect the super-matched bipolar input transistors against high
transient energy spikes common when inserting and extracting XLR connectors. However, to
maintain top performance and protect the HV-3C's sensitive front-end, it is advised that you
do not insert or extract XLR connectors with preamp AC power on. Get in the habit of turning
preamp power off when inserting or removing microphone input or line output cables.
Millennia Media has long enjoyed a reputation for what many engineers call the world's most
musically accurate and dynamically stable microphone preamplifier. With B&K (DPA) high
(1 pages)
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