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Herron Audio Vacuum Tube Stereo Preamplifier
Installation and Operation
Installation and Operation
forward. As with any fine audio component, careful set-up and integration into
one's system is important for optimum performance, safety, and reliability.
Please read through the following set-up instructions completely prior to oper-
ating the unit.
Procedure
1. Position the unit in a well-ven-
tilated area on a firm, stable
surface, away from equipment
that generates alternating mag-
netic fields such as motors,
transformers, etc. Magnetic
fields of this type can introduce
hum into the signal path.
2. Connect the signal cables from
the source components (CD,
phono preamplifier, VCR,
tuner, etc.) to the VTSP-1's rear
panel jacks, left-to-left and
right-to-right. Connect the
ground bleed wires to the
ground connector of the phono
preamplifier.
3. Plug the amplifier and tape
recorder input cables into the
corresponding outputs, left-to-
left and right-to-right.
4. Plug the power cord into the
VTSP-1A preamplifier. Make
sure it is firmly seated into the
IEC socket prior to inserting the
plug into an AC outlet.
5. Plug the power cord into a 115
volt (U.S. spec units) AC outlet.
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6. Power up the unit by switching
on the power switch.
7. Observe the LEDs for appropri-
ate operation (see the Front
Panel Features section). Listen
carefully for the click of the
automute engaging the outputs.
8. Power up the source compo-
nent to be used and position
the selector switch to choose
that component.
9. Once the unit is powered up
and operating, power up the
down-stream amplifier(s) and
crossover, if any, as recom-
mended by their
manufacturers.
10. With the Volume control in the
lowest position, gradually
increase the gain until the
desired level is reached.
11. When the entertainment ses-
sion is complete, it is suggested,
but not required, that the VTSP-
1 be powered down after the
crossover, amplifiers, and tape
recorder, and before the source
components.
Owner's Manual
Other Considerations
Other Considerations
With the higher definition and detail available through
the VTSP-1A/166, careful attention to the set-up of other
components will yield greater benefits. There may also
be considerable gains from the upgrade of existing
electronics.
Turntable mounting can improve performance by
providing a more stable operating platform for the arm
and platter. We have found that attention to turntable
and platter leveling, fine balance of springs, dampening
of vibrations, etc., can improve performance in many
systems.
Tonearm balance, minor changes in antiskate, proper
arm alignment, etc., all contribute to gaining the best per-
formance. For certain arms, the use of a dampening wrap
can improve performance dramatically.
We recommend the use of high-quality interconnecting
cables between the source components and the VTSP-1A/166,
and between the VTSP-1A/166 and components down-
stream of it (the power amplifiers and speakers).
Due to the increased definition of detail, it may be nec-
essary to make minor adjustments in speaker position or
active crossover settings to optimize their performance.
We have determined that minor time alignment changes
in a setup can produce major advances in the overall qual-
ity of the reproduced signal bringing the listener closer to
the original performance.
Please read the Owner's Manual completely BEFORE operating the unit.
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